./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe008_power.oepc_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/protection/safe008_power.oepc_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cde23df1 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/safe008_power.oepc_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i ./goblint.2024-05-21_14-57-05.files/protection/safe008_power.oepc_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-cde23df-m [2024-06-14 13:00:14,873 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-14 13:00:14,937 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-14 13:00:14,942 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-14 13:00:14,942 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-14 13:00:14,964 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-14 13:00:14,965 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-14 13:00:14,966 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-14 13:00:14,966 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-14 13:00:14,968 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-14 13:00:14,969 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-14 13:00:14,969 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-14 13:00:14,970 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-14 13:00:14,970 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-14 13:00:14,970 INFO L153 SettingsManager]: * Use SBE=true [2024-06-14 13:00:14,971 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-14 13:00:14,971 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-14 13:00:14,971 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-14 13:00:14,971 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-14 13:00:14,972 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-14 13:00:14,972 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-14 13:00:14,972 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-14 13:00:14,973 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-14 13:00:14,973 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-14 13:00:14,973 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-14 13:00:14,973 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-14 13:00:14,974 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-14 13:00:14,974 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-14 13:00:14,974 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-14 13:00:14,975 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-14 13:00:14,975 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-14 13:00:14,976 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-14 13:00:14,976 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 13:00:14,976 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-14 13:00:14,976 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-14 13:00:14,977 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-14 13:00:14,977 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-14 13:00:14,977 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-14 13:00:14,977 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-14 13:00:14,977 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-14 13:00:14,978 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-14 13:00:14,978 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-14 13:00:14,978 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-14 13:00:14,978 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-14 13:00:15,177 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-14 13:00:15,199 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-14 13:00:15,201 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-14 13:00:15,202 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-14 13:00:15,203 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-14 13:00:15,204 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/safe008_power.oepc_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml [2024-06-14 13:00:15,373 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-14 13:00:15,373 INFO L274 PluginConnector]: CDTParser initialized [2024-06-14 13:00:15,374 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe008_power.oepc_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-14 13:00:16,424 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-14 13:00:16,638 INFO L384 CDTParser]: Found 1 translation units. [2024-06-14 13:00:16,639 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe008_power.oepc_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-14 13:00:16,650 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6b9b4d22/bde53018137f46eaac0dc0004aaef7c1/FLAG655f45543 [2024-06-14 13:00:16,670 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6b9b4d22/bde53018137f46eaac0dc0004aaef7c1 [2024-06-14 13:00:16,670 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-14 13:00:16,671 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-14 13:00:16,672 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-14 13:00:16,672 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-14 13:00:16,677 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-14 13:00:16,678 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 01:00:15" (1/2) ... [2024-06-14 13:00:16,679 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23d1f7dc and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:00:16, skipping insertion in model container [2024-06-14 13:00:16,679 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 01:00:15" (1/2) ... [2024-06-14 13:00:16,680 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3daa7e10 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:00:16, skipping insertion in model container [2024-06-14 13:00:16,681 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 01:00:16" (2/2) ... [2024-06-14 13:00:16,681 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23d1f7dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:00:16, skipping insertion in model container [2024-06-14 13:00:16,682 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 01:00:16" (2/2) ... [2024-06-14 13:00:16,682 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-14 13:00:16,762 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-14 13:00:16,763 INFO L97 edCorrectnessWitness]: Location invariant before [L823-L823] (((((((((((((((((! multithreaded || z$r_buff0_thd0 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || ((((0 <= z$w_buff0 && z$w_buff0 <= 2) && z$w_buff0 <= 127) && z$w_buff0 % 2 == 0) && (z$w_buff0 == 0 || z$w_buff0 == 2)))) && (! multithreaded || (((0 <= z$mem_tmp && z$mem_tmp <= 2) && z$mem_tmp <= 127) && ((z$mem_tmp == 0 || z$mem_tmp == 1) || z$mem_tmp == 2)))) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (((0 <= z && z <= 2) && z <= 127) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((((0 <= z$w_buff1 && z$w_buff1 <= 2) && z$w_buff1 <= 127) && z$w_buff1 % 2 == 0) && (z$w_buff1 == 0 || z$w_buff1 == 2))) [2024-06-14 13:00:16,764 INFO L97 edCorrectnessWitness]: Location invariant before [L825-L825] (((((((((((((((((! multithreaded || z$r_buff0_thd0 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || ((((0 <= z$w_buff0 && z$w_buff0 <= 2) && z$w_buff0 <= 127) && z$w_buff0 % 2 == 0) && (z$w_buff0 == 0 || z$w_buff0 == 2)))) && (! multithreaded || (((0 <= z$mem_tmp && z$mem_tmp <= 2) && z$mem_tmp <= 127) && ((z$mem_tmp == 0 || z$mem_tmp == 1) || z$mem_tmp == 2)))) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (((0 <= z && z <= 2) && z <= 127) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((((0 <= z$w_buff1 && z$w_buff1 <= 2) && z$w_buff1 <= 127) && z$w_buff1 % 2 == 0) && (z$w_buff1 == 0 || z$w_buff1 == 2))) [2024-06-14 13:00:16,764 INFO L97 edCorrectnessWitness]: Location invariant before [L826-L826] (((((((((((((((((! multithreaded || z$r_buff0_thd0 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || ((((0 <= z$w_buff0 && z$w_buff0 <= 2) && z$w_buff0 <= 127) && z$w_buff0 % 2 == 0) && (z$w_buff0 == 0 || z$w_buff0 == 2)))) && (! multithreaded || (((0 <= z$mem_tmp && z$mem_tmp <= 2) && z$mem_tmp <= 127) && ((z$mem_tmp == 0 || z$mem_tmp == 1) || z$mem_tmp == 2)))) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (((0 <= z && z <= 2) && z <= 127) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((((0 <= z$w_buff1 && z$w_buff1 <= 2) && z$w_buff1 <= 127) && z$w_buff1 % 2 == 0) && (z$w_buff1 == 0 || z$w_buff1 == 2))) [2024-06-14 13:00:16,764 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-14 13:00:16,765 INFO L106 edCorrectnessWitness]: ghost_update [L821-L821] multithreaded = 1; [2024-06-14 13:00:16,810 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-14 13:00:17,192 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 13:00:17,205 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-14 13:00:17,335 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 13:00:17,387 INFO L206 MainTranslator]: Completed translation [2024-06-14 13:00:17,388 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:00:17 WrapperNode [2024-06-14 13:00:17,388 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-14 13:00:17,389 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-14 13:00:17,389 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-14 13:00:17,389 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-14 13:00:17,394 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:00:17" (1/1) ... [2024-06-14 13:00:17,413 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:00:17" (1/1) ... [2024-06-14 13:00:17,453 INFO L138 Inliner]: procedures = 175, calls = 43, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 144 [2024-06-14 13:00:17,460 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-14 13:00:17,461 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-14 13:00:17,461 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-14 13:00:17,461 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-14 13:00:17,469 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:00:17" (1/1) ... [2024-06-14 13:00:17,470 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:00:17" (1/1) ... [2024-06-14 13:00:17,484 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:00:17" (1/1) ... [2024-06-14 13:00:17,501 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]. [2024-06-14 13:00:17,512 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:00:17" (1/1) ... [2024-06-14 13:00:17,512 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:00:17" (1/1) ... [2024-06-14 13:00:17,518 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:00:17" (1/1) ... [2024-06-14 13:00:17,520 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:00:17" (1/1) ... [2024-06-14 13:00:17,521 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:00:17" (1/1) ... [2024-06-14 13:00:17,522 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:00:17" (1/1) ... [2024-06-14 13:00:17,524 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-14 13:00:17,525 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-14 13:00:17,525 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-14 13:00:17,525 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-14 13:00:17,525 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:00:17" (1/1) ... [2024-06-14 13:00:17,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 13:00:17,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-14 13:00:17,578 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) [2024-06-14 13:00:17,619 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 [2024-06-14 13:00:17,633 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-14 13:00:17,634 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-14 13:00:17,634 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-14 13:00:17,634 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-14 13:00:17,634 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-14 13:00:17,634 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-14 13:00:17,634 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-14 13:00:17,635 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-14 13:00:17,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-14 13:00:17,635 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-14 13:00:17,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-14 13:00:17,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-14 13:00:17,636 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-14 13:00:17,751 INFO L244 CfgBuilder]: Building ICFG [2024-06-14 13:00:17,753 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-14 13:00:18,065 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-14 13:00:18,065 INFO L293 CfgBuilder]: Performing block encoding [2024-06-14 13:00:18,241 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-14 13:00:18,241 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-14 13:00:18,242 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 01:00:18 BoogieIcfgContainer [2024-06-14 13:00:18,242 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-14 13:00:18,245 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-14 13:00:18,245 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-14 13:00:18,247 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-14 13:00:18,247 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 01:00:15" (1/4) ... [2024-06-14 13:00:18,248 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e0c38ec and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.06 01:00:18, skipping insertion in model container [2024-06-14 13:00:18,248 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.06 01:00:16" (2/4) ... [2024-06-14 13:00:18,249 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e0c38ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 01:00:18, skipping insertion in model container [2024-06-14 13:00:18,249 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:00:17" (3/4) ... [2024-06-14 13:00:18,249 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e0c38ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 01:00:18, skipping insertion in model container [2024-06-14 13:00:18,249 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 01:00:18" (4/4) ... [2024-06-14 13:00:18,250 INFO L112 eAbstractionObserver]: Analyzing ICFG safe008_power.oepc_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-14 13:00:18,263 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-14 13:00:18,263 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-14 13:00:18,263 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-14 13:00:18,300 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-14 13:00:18,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 51 places, 41 transitions, 94 flow [2024-06-14 13:00:18,354 INFO L124 PetriNetUnfolderBase]: 0/38 cut-off events. [2024-06-14 13:00:18,355 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 13:00:18,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 38 events. 0/38 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 63 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-14 13:00:18,356 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 41 transitions, 94 flow [2024-06-14 13:00:18,359 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 32 transitions, 73 flow [2024-06-14 13:00:18,370 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-14 13:00:18,376 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;@7fb1ace2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-14 13:00:18,376 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-14 13:00:18,383 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-14 13:00:18,383 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-14 13:00:18,383 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 13:00:18,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:00:18,384 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-14 13:00:18,384 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:00:18,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:00:18,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1352874220, now seen corresponding path program 1 times [2024-06-14 13:00:18,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:00:18,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492554136] [2024-06-14 13:00:18,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:00:18,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:00:18,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:00:19,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:00:19,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:00:19,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492554136] [2024-06-14 13:00:19,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492554136] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:00:19,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:00:19,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-14 13:00:19,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621762172] [2024-06-14 13:00:19,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:00:19,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-14 13:00:19,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:00:19,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-14 13:00:19,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-14 13:00:19,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-14 13:00:19,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 73 flow. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:00:19,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:00:19,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-14 13:00:19,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:00:19,929 INFO L124 PetriNetUnfolderBase]: 1156/1755 cut-off events. [2024-06-14 13:00:19,929 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2024-06-14 13:00:19,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3584 conditions, 1755 events. 1156/1755 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 8046 event pairs, 805 based on Foata normal form. 1/1718 useless extension candidates. Maximal degree in co-relation 3569. Up to 1740 conditions per place. [2024-06-14 13:00:19,942 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 33 selfloop transitions, 4 changer transitions 0/42 dead transitions. [2024-06-14 13:00:19,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 42 transitions, 173 flow [2024-06-14 13:00:19,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-14 13:00:19,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-14 13:00:19,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 70 transitions. [2024-06-14 13:00:19,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5691056910569106 [2024-06-14 13:00:19,954 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 73 flow. Second operand 3 states and 70 transitions. [2024-06-14 13:00:19,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 42 transitions, 173 flow [2024-06-14 13:00:19,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 42 transitions, 168 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-14 13:00:19,959 INFO L231 Difference]: Finished difference. Result has 42 places, 35 transitions, 100 flow [2024-06-14 13:00:19,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=42, PETRI_TRANSITIONS=35} [2024-06-14 13:00:19,963 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 0 predicate places. [2024-06-14 13:00:19,963 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 35 transitions, 100 flow [2024-06-14 13:00:19,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:00:19,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:00:19,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:00:19,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-14 13:00:19,964 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:00:19,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:00:19,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1263011443, now seen corresponding path program 1 times [2024-06-14 13:00:19,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:00:19,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161842558] [2024-06-14 13:00:19,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:00:19,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:00:19,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:00:20,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:00:20,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:00:20,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161842558] [2024-06-14 13:00:20,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161842558] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:00:20,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:00:20,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-14 13:00:20,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688257111] [2024-06-14 13:00:20,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:00:20,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-14 13:00:20,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:00:20,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-14 13:00:20,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-14 13:00:20,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-14 13:00:20,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 100 flow. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:00:20,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:00:20,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-14 13:00:20,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:00:20,965 INFO L124 PetriNetUnfolderBase]: 1150/1746 cut-off events. [2024-06-14 13:00:20,965 INFO L125 PetriNetUnfolderBase]: For 327/334 co-relation queries the response was YES. [2024-06-14 13:00:20,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4055 conditions, 1746 events. 1150/1746 cut-off events. For 327/334 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 7823 event pairs, 699 based on Foata normal form. 7/1749 useless extension candidates. Maximal degree in co-relation 4040. Up to 1716 conditions per place. [2024-06-14 13:00:20,975 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 40 selfloop transitions, 7 changer transitions 0/52 dead transitions. [2024-06-14 13:00:20,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 52 transitions, 240 flow [2024-06-14 13:00:20,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-14 13:00:20,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-14 13:00:20,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 90 transitions. [2024-06-14 13:00:20,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5487804878048781 [2024-06-14 13:00:20,980 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 100 flow. Second operand 4 states and 90 transitions. [2024-06-14 13:00:20,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 52 transitions, 240 flow [2024-06-14 13:00:20,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 52 transitions, 236 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-14 13:00:20,983 INFO L231 Difference]: Finished difference. Result has 45 places, 38 transitions, 136 flow [2024-06-14 13:00:20,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=136, PETRI_PLACES=45, PETRI_TRANSITIONS=38} [2024-06-14 13:00:20,983 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 3 predicate places. [2024-06-14 13:00:20,984 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 38 transitions, 136 flow [2024-06-14 13:00:20,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:00:20,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:00:20,985 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:00:20,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-14 13:00:20,987 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:00:20,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:00:20,988 INFO L85 PathProgramCache]: Analyzing trace with hash 498650573, now seen corresponding path program 1 times [2024-06-14 13:00:20,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:00:20,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899508492] [2024-06-14 13:00:20,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:00:20,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:00:21,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:00:21,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:00:21,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:00:21,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899508492] [2024-06-14 13:00:21,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899508492] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:00:21,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:00:21,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-14 13:00:21,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539885719] [2024-06-14 13:00:21,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:00:21,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-14 13:00:21,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:00:21,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-14 13:00:21,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-14 13:00:21,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-14 13:00:21,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 38 transitions, 136 flow. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:00:21,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:00:21,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-14 13:00:21,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:00:21,948 INFO L124 PetriNetUnfolderBase]: 1385/2087 cut-off events. [2024-06-14 13:00:21,948 INFO L125 PetriNetUnfolderBase]: For 1057/1065 co-relation queries the response was YES. [2024-06-14 13:00:21,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5368 conditions, 2087 events. 1385/2087 cut-off events. For 1057/1065 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 9351 event pairs, 709 based on Foata normal form. 9/2093 useless extension candidates. Maximal degree in co-relation 5351. Up to 2043 conditions per place. [2024-06-14 13:00:21,960 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 54 selfloop transitions, 10 changer transitions 0/68 dead transitions. [2024-06-14 13:00:21,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 68 transitions, 357 flow [2024-06-14 13:00:21,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 13:00:21,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 13:00:21,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 106 transitions. [2024-06-14 13:00:21,963 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5170731707317073 [2024-06-14 13:00:21,963 INFO L175 Difference]: Start difference. First operand has 45 places, 38 transitions, 136 flow. Second operand 5 states and 106 transitions. [2024-06-14 13:00:21,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 68 transitions, 357 flow [2024-06-14 13:00:21,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 68 transitions, 336 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-14 13:00:21,966 INFO L231 Difference]: Finished difference. Result has 50 places, 47 transitions, 206 flow [2024-06-14 13:00:21,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=206, PETRI_PLACES=50, PETRI_TRANSITIONS=47} [2024-06-14 13:00:21,967 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 8 predicate places. [2024-06-14 13:00:21,967 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 47 transitions, 206 flow [2024-06-14 13:00:21,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:00:21,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:00:21,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:00:21,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-14 13:00:21,968 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:00:21,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:00:21,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1721699886, now seen corresponding path program 1 times [2024-06-14 13:00:21,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:00:21,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24115604] [2024-06-14 13:00:21,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:00:21,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:00:21,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:00:22,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:00:22,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:00:22,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24115604] [2024-06-14 13:00:22,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24115604] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:00:22,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:00:22,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 13:00:22,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517727226] [2024-06-14 13:00:22,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:00:22,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 13:00:22,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:00:22,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 13:00:22,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-14 13:00:22,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-14 13:00:22,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 47 transitions, 206 flow. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:00:22,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:00:22,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-14 13:00:22,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:00:23,108 INFO L124 PetriNetUnfolderBase]: 1379/2078 cut-off events. [2024-06-14 13:00:23,108 INFO L125 PetriNetUnfolderBase]: For 1874/1893 co-relation queries the response was YES. [2024-06-14 13:00:23,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5905 conditions, 2078 events. 1379/2078 cut-off events. For 1874/1893 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 9304 event pairs, 584 based on Foata normal form. 15/2090 useless extension candidates. Maximal degree in co-relation 5885. Up to 2019 conditions per place. [2024-06-14 13:00:23,118 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 61 selfloop transitions, 13 changer transitions 0/78 dead transitions. [2024-06-14 13:00:23,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 78 transitions, 440 flow [2024-06-14 13:00:23,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 13:00:23,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 13:00:23,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 125 transitions. [2024-06-14 13:00:23,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.508130081300813 [2024-06-14 13:00:23,120 INFO L175 Difference]: Start difference. First operand has 50 places, 47 transitions, 206 flow. Second operand 6 states and 125 transitions. [2024-06-14 13:00:23,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 78 transitions, 440 flow [2024-06-14 13:00:23,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 78 transitions, 436 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-14 13:00:23,123 INFO L231 Difference]: Finished difference. Result has 56 places, 50 transitions, 258 flow [2024-06-14 13:00:23,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=258, PETRI_PLACES=56, PETRI_TRANSITIONS=50} [2024-06-14 13:00:23,123 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 14 predicate places. [2024-06-14 13:00:23,124 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 50 transitions, 258 flow [2024-06-14 13:00:23,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:00:23,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:00:23,124 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:00:23,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-14 13:00:23,124 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:00:23,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:00:23,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1833087348, now seen corresponding path program 1 times [2024-06-14 13:00:23,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:00:23,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944000067] [2024-06-14 13:00:23,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:00:23,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:00:23,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:00:24,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:00:24,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:00:24,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944000067] [2024-06-14 13:00:24,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944000067] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:00:24,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:00:24,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 13:00:24,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830740837] [2024-06-14 13:00:24,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:00:24,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 13:00:24,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:00:24,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 13:00:24,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-14 13:00:24,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-14 13:00:24,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 50 transitions, 258 flow. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:00:24,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:00:24,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-14 13:00:24,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:00:24,602 INFO L124 PetriNetUnfolderBase]: 1433/2162 cut-off events. [2024-06-14 13:00:24,603 INFO L125 PetriNetUnfolderBase]: For 3177/3196 co-relation queries the response was YES. [2024-06-14 13:00:24,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6680 conditions, 2162 events. 1433/2162 cut-off events. For 3177/3196 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 9814 event pairs, 449 based on Foata normal form. 30/2189 useless extension candidates. Maximal degree in co-relation 6657. Up to 1965 conditions per place. [2024-06-14 13:00:24,621 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 79 selfloop transitions, 24 changer transitions 0/107 dead transitions. [2024-06-14 13:00:24,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 107 transitions, 650 flow [2024-06-14 13:00:24,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:00:24,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:00:24,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 156 transitions. [2024-06-14 13:00:24,624 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5435540069686411 [2024-06-14 13:00:24,624 INFO L175 Difference]: Start difference. First operand has 56 places, 50 transitions, 258 flow. Second operand 7 states and 156 transitions. [2024-06-14 13:00:24,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 107 transitions, 650 flow [2024-06-14 13:00:24,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 107 transitions, 620 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-14 13:00:24,638 INFO L231 Difference]: Finished difference. Result has 62 places, 64 transitions, 387 flow [2024-06-14 13:00:24,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=387, PETRI_PLACES=62, PETRI_TRANSITIONS=64} [2024-06-14 13:00:24,641 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 20 predicate places. [2024-06-14 13:00:24,641 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 64 transitions, 387 flow [2024-06-14 13:00:24,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:00:24,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:00:24,641 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:00:24,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-14 13:00:24,642 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:00:24,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:00:24,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1504971726, now seen corresponding path program 1 times [2024-06-14 13:00:24,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:00:24,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453812207] [2024-06-14 13:00:24,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:00:24,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:00:24,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:00:25,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:00:25,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:00:25,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453812207] [2024-06-14 13:00:25,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453812207] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:00:25,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:00:25,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 13:00:25,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354194197] [2024-06-14 13:00:25,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:00:25,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 13:00:25,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:00:25,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 13:00:25,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-14 13:00:25,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:00:25,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 64 transitions, 387 flow. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:00:25,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:00:25,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:00:25,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:00:26,020 INFO L124 PetriNetUnfolderBase]: 1652/2477 cut-off events. [2024-06-14 13:00:26,021 INFO L125 PetriNetUnfolderBase]: For 6808/6808 co-relation queries the response was YES. [2024-06-14 13:00:26,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8953 conditions, 2477 events. 1652/2477 cut-off events. For 6808/6808 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 11364 event pairs, 663 based on Foata normal form. 4/2479 useless extension candidates. Maximal degree in co-relation 8925. Up to 2436 conditions per place. [2024-06-14 13:00:26,044 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 72 selfloop transitions, 9 changer transitions 0/84 dead transitions. [2024-06-14 13:00:26,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 84 transitions, 625 flow [2024-06-14 13:00:26,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 13:00:26,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 13:00:26,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 84 transitions. [2024-06-14 13:00:26,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4097560975609756 [2024-06-14 13:00:26,046 INFO L175 Difference]: Start difference. First operand has 62 places, 64 transitions, 387 flow. Second operand 5 states and 84 transitions. [2024-06-14 13:00:26,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 84 transitions, 625 flow [2024-06-14 13:00:26,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 84 transitions, 613 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-06-14 13:00:26,056 INFO L231 Difference]: Finished difference. Result has 68 places, 71 transitions, 456 flow [2024-06-14 13:00:26,056 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=375, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=456, PETRI_PLACES=68, PETRI_TRANSITIONS=71} [2024-06-14 13:00:26,058 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 26 predicate places. [2024-06-14 13:00:26,058 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 71 transitions, 456 flow [2024-06-14 13:00:26,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:00:26,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:00:26,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:00:26,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-14 13:00:26,059 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:00:26,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:00:26,060 INFO L85 PathProgramCache]: Analyzing trace with hash 948681495, now seen corresponding path program 1 times [2024-06-14 13:00:26,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:00:26,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142055307] [2024-06-14 13:00:26,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:00:26,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:00:26,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:00:26,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:00:26,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:00:26,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142055307] [2024-06-14 13:00:26,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142055307] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:00:26,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:00:26,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:00:26,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472306347] [2024-06-14 13:00:26,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:00:26,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:00:26,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:00:26,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:00:26,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:00:26,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-14 13:00:26,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 71 transitions, 456 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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) [2024-06-14 13:00:26,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:00:26,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-14 13:00:26,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:00:27,391 INFO L124 PetriNetUnfolderBase]: 1622/2438 cut-off events. [2024-06-14 13:00:27,392 INFO L125 PetriNetUnfolderBase]: For 8693/8752 co-relation queries the response was YES. [2024-06-14 13:00:27,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9593 conditions, 2438 events. 1622/2438 cut-off events. For 8693/8752 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 11200 event pairs, 603 based on Foata normal form. 24/2447 useless extension candidates. Maximal degree in co-relation 9560. Up to 2334 conditions per place. [2024-06-14 13:00:27,414 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 74 selfloop transitions, 24 changer transitions 0/104 dead transitions. [2024-06-14 13:00:27,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 104 transitions, 794 flow [2024-06-14 13:00:27,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:00:27,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:00:27,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 127 transitions. [2024-06-14 13:00:27,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4425087108013937 [2024-06-14 13:00:27,416 INFO L175 Difference]: Start difference. First operand has 68 places, 71 transitions, 456 flow. Second operand 7 states and 127 transitions. [2024-06-14 13:00:27,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 104 transitions, 794 flow [2024-06-14 13:00:27,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 104 transitions, 788 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-06-14 13:00:27,424 INFO L231 Difference]: Finished difference. Result has 74 places, 77 transitions, 560 flow [2024-06-14 13:00:27,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=450, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=560, PETRI_PLACES=74, PETRI_TRANSITIONS=77} [2024-06-14 13:00:27,425 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 32 predicate places. [2024-06-14 13:00:27,425 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 77 transitions, 560 flow [2024-06-14 13:00:27,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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) [2024-06-14 13:00:27,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:00:27,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:00:27,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-14 13:00:27,426 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:00:27,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:00:27,426 INFO L85 PathProgramCache]: Analyzing trace with hash 948801651, now seen corresponding path program 1 times [2024-06-14 13:00:27,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:00:27,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293513629] [2024-06-14 13:00:27,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:00:27,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:00:27,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:00:28,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:00:28,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:00:28,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293513629] [2024-06-14 13:00:28,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293513629] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:00:28,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:00:28,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:00:28,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191867895] [2024-06-14 13:00:28,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:00:28,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:00:28,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:00:28,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:00:28,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:00:28,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:00:28,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 77 transitions, 560 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:00:28,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:00:28,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:00:28,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:00:28,674 INFO L124 PetriNetUnfolderBase]: 1717/2571 cut-off events. [2024-06-14 13:00:28,674 INFO L125 PetriNetUnfolderBase]: For 10876/10878 co-relation queries the response was YES. [2024-06-14 13:00:28,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10420 conditions, 2571 events. 1717/2571 cut-off events. For 10876/10878 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 11733 event pairs, 611 based on Foata normal form. 4/2573 useless extension candidates. Maximal degree in co-relation 10384. Up to 2459 conditions per place. [2024-06-14 13:00:28,686 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 97 selfloop transitions, 20 changer transitions 0/120 dead transitions. [2024-06-14 13:00:28,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 120 transitions, 990 flow [2024-06-14 13:00:28,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:00:28,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:00:28,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 121 transitions. [2024-06-14 13:00:28,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42160278745644597 [2024-06-14 13:00:28,688 INFO L175 Difference]: Start difference. First operand has 74 places, 77 transitions, 560 flow. Second operand 7 states and 121 transitions. [2024-06-14 13:00:28,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 120 transitions, 990 flow [2024-06-14 13:00:28,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 120 transitions, 947 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-14 13:00:28,703 INFO L231 Difference]: Finished difference. Result has 81 places, 92 transitions, 694 flow [2024-06-14 13:00:28,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=694, PETRI_PLACES=81, PETRI_TRANSITIONS=92} [2024-06-14 13:00:28,705 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 39 predicate places. [2024-06-14 13:00:28,705 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 92 transitions, 694 flow [2024-06-14 13:00:28,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:00:28,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:00:28,705 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:00:28,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-14 13:00:28,705 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:00:28,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:00:28,706 INFO L85 PathProgramCache]: Analyzing trace with hash 678056025, now seen corresponding path program 2 times [2024-06-14 13:00:28,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:00:28,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501828649] [2024-06-14 13:00:28,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:00:28,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:00:28,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:00:29,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:00:29,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:00:29,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501828649] [2024-06-14 13:00:29,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501828649] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:00:29,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:00:29,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:00:29,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048990044] [2024-06-14 13:00:29,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:00:29,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:00:29,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:00:29,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:00:29,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:00:29,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-14 13:00:29,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 92 transitions, 694 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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) [2024-06-14 13:00:29,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:00:29,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-14 13:00:29,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:00:30,112 INFO L124 PetriNetUnfolderBase]: 1644/2483 cut-off events. [2024-06-14 13:00:30,113 INFO L125 PetriNetUnfolderBase]: For 13966/14151 co-relation queries the response was YES. [2024-06-14 13:00:30,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11045 conditions, 2483 events. 1644/2483 cut-off events. For 13966/14151 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 11521 event pairs, 552 based on Foata normal form. 6/2439 useless extension candidates. Maximal degree in co-relation 11004. Up to 2374 conditions per place. [2024-06-14 13:00:30,128 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 83 selfloop transitions, 27 changer transitions 0/120 dead transitions. [2024-06-14 13:00:30,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 120 transitions, 1023 flow [2024-06-14 13:00:30,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:00:30,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:00:30,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 121 transitions. [2024-06-14 13:00:30,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42160278745644597 [2024-06-14 13:00:30,129 INFO L175 Difference]: Start difference. First operand has 81 places, 92 transitions, 694 flow. Second operand 7 states and 121 transitions. [2024-06-14 13:00:30,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 120 transitions, 1023 flow [2024-06-14 13:00:30,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 120 transitions, 1007 flow, removed 7 selfloop flow, removed 1 redundant places. [2024-06-14 13:00:30,143 INFO L231 Difference]: Finished difference. Result has 87 places, 98 transitions, 800 flow [2024-06-14 13:00:30,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=678, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=800, PETRI_PLACES=87, PETRI_TRANSITIONS=98} [2024-06-14 13:00:30,144 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 45 predicate places. [2024-06-14 13:00:30,144 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 98 transitions, 800 flow [2024-06-14 13:00:30,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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) [2024-06-14 13:00:30,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:00:30,144 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:00:30,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-14 13:00:30,145 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:00:30,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:00:30,145 INFO L85 PathProgramCache]: Analyzing trace with hash 484183663, now seen corresponding path program 2 times [2024-06-14 13:00:30,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:00:30,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740877599] [2024-06-14 13:00:30,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:00:30,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:00:30,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:00:30,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:00:30,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:00:30,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740877599] [2024-06-14 13:00:30,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740877599] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:00:30,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:00:30,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:00:30,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775184661] [2024-06-14 13:00:30,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:00:30,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:00:30,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:00:30,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:00:30,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:00:30,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:00:30,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 98 transitions, 800 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:00:30,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:00:30,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:00:30,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:00:31,289 INFO L124 PetriNetUnfolderBase]: 1760/2633 cut-off events. [2024-06-14 13:00:31,289 INFO L125 PetriNetUnfolderBase]: For 15902/15904 co-relation queries the response was YES. [2024-06-14 13:00:31,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11866 conditions, 2633 events. 1760/2633 cut-off events. For 15902/15904 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 12037 event pairs, 622 based on Foata normal form. 6/2637 useless extension candidates. Maximal degree in co-relation 11822. Up to 2583 conditions per place. [2024-06-14 13:00:31,305 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 103 selfloop transitions, 12 changer transitions 0/118 dead transitions. [2024-06-14 13:00:31,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 118 transitions, 1101 flow [2024-06-14 13:00:31,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 13:00:31,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 13:00:31,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 98 transitions. [2024-06-14 13:00:31,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3983739837398374 [2024-06-14 13:00:31,307 INFO L175 Difference]: Start difference. First operand has 87 places, 98 transitions, 800 flow. Second operand 6 states and 98 transitions. [2024-06-14 13:00:31,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 118 transitions, 1101 flow [2024-06-14 13:00:31,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 118 transitions, 1032 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-14 13:00:31,329 INFO L231 Difference]: Finished difference. Result has 89 places, 101 transitions, 790 flow [2024-06-14 13:00:31,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=731, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=790, PETRI_PLACES=89, PETRI_TRANSITIONS=101} [2024-06-14 13:00:31,331 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 47 predicate places. [2024-06-14 13:00:31,331 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 101 transitions, 790 flow [2024-06-14 13:00:31,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:00:31,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:00:31,332 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:00:31,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-14 13:00:31,332 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:00:31,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:00:31,333 INFO L85 PathProgramCache]: Analyzing trace with hash 483946513, now seen corresponding path program 3 times [2024-06-14 13:00:31,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:00:31,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121974452] [2024-06-14 13:00:31,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:00:31,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:00:31,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:00:32,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:00:32,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:00:32,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121974452] [2024-06-14 13:00:32,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121974452] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:00:32,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:00:32,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:00:32,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271970919] [2024-06-14 13:00:32,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:00:32,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:00:32,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:00:32,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:00:32,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:00:32,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:00:32,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 101 transitions, 790 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:00:32,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:00:32,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:00:32,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:00:32,537 INFO L124 PetriNetUnfolderBase]: 1750/2619 cut-off events. [2024-06-14 13:00:32,537 INFO L125 PetriNetUnfolderBase]: For 17916/17918 co-relation queries the response was YES. [2024-06-14 13:00:32,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11960 conditions, 2619 events. 1750/2619 cut-off events. For 17916/17918 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 11954 event pairs, 609 based on Foata normal form. 4/2621 useless extension candidates. Maximal degree in co-relation 11915. Up to 2500 conditions per place. [2024-06-14 13:00:32,557 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 97 selfloop transitions, 24 changer transitions 0/124 dead transitions. [2024-06-14 13:00:32,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 124 transitions, 1106 flow [2024-06-14 13:00:32,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 13:00:32,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 13:00:32,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 105 transitions. [2024-06-14 13:00:32,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4268292682926829 [2024-06-14 13:00:32,559 INFO L175 Difference]: Start difference. First operand has 89 places, 101 transitions, 790 flow. Second operand 6 states and 105 transitions. [2024-06-14 13:00:32,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 124 transitions, 1106 flow [2024-06-14 13:00:32,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 124 transitions, 1075 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-14 13:00:32,584 INFO L231 Difference]: Finished difference. Result has 92 places, 103 transitions, 846 flow [2024-06-14 13:00:32,584 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=759, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=846, PETRI_PLACES=92, PETRI_TRANSITIONS=103} [2024-06-14 13:00:32,585 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 50 predicate places. [2024-06-14 13:00:32,585 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 103 transitions, 846 flow [2024-06-14 13:00:32,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:00:32,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:00:32,586 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:00:32,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-14 13:00:32,586 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:00:32,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:00:32,586 INFO L85 PathProgramCache]: Analyzing trace with hash 483946327, now seen corresponding path program 3 times [2024-06-14 13:00:32,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:00:32,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412996801] [2024-06-14 13:00:32,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:00:32,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:00:32,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:00:33,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:00:33,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:00:33,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412996801] [2024-06-14 13:00:33,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412996801] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:00:33,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:00:33,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:00:33,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364265956] [2024-06-14 13:00:33,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:00:33,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:00:33,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:00:33,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:00:33,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:00:33,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-14 13:00:33,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 103 transitions, 846 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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) [2024-06-14 13:00:33,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:00:33,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-14 13:00:33,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:00:33,896 INFO L124 PetriNetUnfolderBase]: 1653/2496 cut-off events. [2024-06-14 13:00:33,896 INFO L125 PetriNetUnfolderBase]: For 20341/20516 co-relation queries the response was YES. [2024-06-14 13:00:33,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11853 conditions, 2496 events. 1653/2496 cut-off events. For 20341/20516 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 11547 event pairs, 550 based on Foata normal form. 18/2465 useless extension candidates. Maximal degree in co-relation 11807. Up to 2379 conditions per place. [2024-06-14 13:00:33,910 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 86 selfloop transitions, 26 changer transitions 0/124 dead transitions. [2024-06-14 13:00:33,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 124 transitions, 1124 flow [2024-06-14 13:00:33,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 13:00:33,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 13:00:33,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 110 transitions. [2024-06-14 13:00:33,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44715447154471544 [2024-06-14 13:00:33,912 INFO L175 Difference]: Start difference. First operand has 92 places, 103 transitions, 846 flow. Second operand 6 states and 110 transitions. [2024-06-14 13:00:33,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 124 transitions, 1124 flow [2024-06-14 13:00:33,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 124 transitions, 1067 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-14 13:00:33,932 INFO L231 Difference]: Finished difference. Result has 94 places, 103 transitions, 855 flow [2024-06-14 13:00:33,932 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=789, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=855, PETRI_PLACES=94, PETRI_TRANSITIONS=103} [2024-06-14 13:00:33,932 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 52 predicate places. [2024-06-14 13:00:33,932 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 103 transitions, 855 flow [2024-06-14 13:00:33,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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) [2024-06-14 13:00:33,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:00:33,933 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:00:33,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-14 13:00:33,933 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:00:33,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:00:33,934 INFO L85 PathProgramCache]: Analyzing trace with hash 484192591, now seen corresponding path program 1 times [2024-06-14 13:00:33,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:00:33,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948574438] [2024-06-14 13:00:33,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:00:33,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:00:33,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:00:34,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:00:34,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:00:34,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948574438] [2024-06-14 13:00:34,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948574438] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:00:34,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:00:34,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:00:34,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633445450] [2024-06-14 13:00:34,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:00:34,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:00:34,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:00:34,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:00:34,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:00:35,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:00:35,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 103 transitions, 855 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-14 13:00:35,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:00:35,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:00:35,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:00:35,509 INFO L124 PetriNetUnfolderBase]: 1734/2596 cut-off events. [2024-06-14 13:00:35,510 INFO L125 PetriNetUnfolderBase]: For 19910/19912 co-relation queries the response was YES. [2024-06-14 13:00:35,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12108 conditions, 2596 events. 1734/2596 cut-off events. For 19910/19912 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 11838 event pairs, 600 based on Foata normal form. 6/2600 useless extension candidates. Maximal degree in co-relation 12062. Up to 2537 conditions per place. [2024-06-14 13:00:35,522 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 106 selfloop transitions, 13 changer transitions 0/122 dead transitions. [2024-06-14 13:00:35,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 122 transitions, 1155 flow [2024-06-14 13:00:35,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 13:00:35,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 13:00:35,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 98 transitions. [2024-06-14 13:00:35,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3983739837398374 [2024-06-14 13:00:35,524 INFO L175 Difference]: Start difference. First operand has 94 places, 103 transitions, 855 flow. Second operand 6 states and 98 transitions. [2024-06-14 13:00:35,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 122 transitions, 1155 flow [2024-06-14 13:00:35,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 122 transitions, 1092 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-14 13:00:35,541 INFO L231 Difference]: Finished difference. Result has 95 places, 105 transitions, 843 flow [2024-06-14 13:00:35,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=792, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=843, PETRI_PLACES=95, PETRI_TRANSITIONS=105} [2024-06-14 13:00:35,541 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 53 predicate places. [2024-06-14 13:00:35,541 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 105 transitions, 843 flow [2024-06-14 13:00:35,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-14 13:00:35,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:00:35,542 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:00:35,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-14 13:00:35,542 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:00:35,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:00:35,543 INFO L85 PathProgramCache]: Analyzing trace with hash -655734212, now seen corresponding path program 1 times [2024-06-14 13:00:35,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:00:35,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517009114] [2024-06-14 13:00:35,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:00:35,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:00:35,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:00:36,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:00:36,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:00:36,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517009114] [2024-06-14 13:00:36,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517009114] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:00:36,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:00:36,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:00:36,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298727603] [2024-06-14 13:00:36,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:00:36,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:00:36,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:00:36,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:00:36,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:00:36,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-14 13:00:36,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 105 transitions, 843 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:00:36,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:00:36,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-14 13:00:36,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:00:37,100 INFO L124 PetriNetUnfolderBase]: 1667/2516 cut-off events. [2024-06-14 13:00:37,101 INFO L125 PetriNetUnfolderBase]: For 24396/24470 co-relation queries the response was YES. [2024-06-14 13:00:37,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12325 conditions, 2516 events. 1667/2516 cut-off events. For 24396/24470 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 11679 event pairs, 543 based on Foata normal form. 51/2515 useless extension candidates. Maximal degree in co-relation 12278. Up to 2300 conditions per place. [2024-06-14 13:00:37,123 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 92 selfloop transitions, 44 changer transitions 0/149 dead transitions. [2024-06-14 13:00:37,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 149 transitions, 1317 flow [2024-06-14 13:00:37,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:00:37,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:00:37,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-14 13:00:37,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4363143631436314 [2024-06-14 13:00:37,125 INFO L175 Difference]: Start difference. First operand has 95 places, 105 transitions, 843 flow. Second operand 9 states and 161 transitions. [2024-06-14 13:00:37,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 149 transitions, 1317 flow [2024-06-14 13:00:37,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 149 transitions, 1284 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-14 13:00:37,153 INFO L231 Difference]: Finished difference. Result has 100 places, 111 transitions, 969 flow [2024-06-14 13:00:37,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=810, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=969, PETRI_PLACES=100, PETRI_TRANSITIONS=111} [2024-06-14 13:00:37,154 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 58 predicate places. [2024-06-14 13:00:37,154 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 111 transitions, 969 flow [2024-06-14 13:00:37,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:00:37,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:00:37,155 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:00:37,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-14 13:00:37,155 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:00:37,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:00:37,155 INFO L85 PathProgramCache]: Analyzing trace with hash -655643847, now seen corresponding path program 1 times [2024-06-14 13:00:37,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:00:37,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120039241] [2024-06-14 13:00:37,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:00:37,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:00:37,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:00:37,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:00:37,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:00:37,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120039241] [2024-06-14 13:00:37,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120039241] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:00:37,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:00:37,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:00:37,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439381007] [2024-06-14 13:00:37,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:00:37,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:00:37,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:00:37,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:00:37,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:00:38,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:00:38,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 111 transitions, 969 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-14 13:00:38,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:00:38,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:00:38,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:00:38,539 INFO L124 PetriNetUnfolderBase]: 1788/2674 cut-off events. [2024-06-14 13:00:38,539 INFO L125 PetriNetUnfolderBase]: For 26922/26924 co-relation queries the response was YES. [2024-06-14 13:00:38,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13404 conditions, 2674 events. 1788/2674 cut-off events. For 26922/26924 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 12277 event pairs, 557 based on Foata normal form. 4/2676 useless extension candidates. Maximal degree in co-relation 13356. Up to 2436 conditions per place. [2024-06-14 13:00:38,556 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 123 selfloop transitions, 35 changer transitions 0/161 dead transitions. [2024-06-14 13:00:38,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 161 transitions, 1566 flow [2024-06-14 13:00:38,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:00:38,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:00:38,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-06-14 13:00:38,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4298780487804878 [2024-06-14 13:00:38,558 INFO L175 Difference]: Start difference. First operand has 100 places, 111 transitions, 969 flow. Second operand 8 states and 141 transitions. [2024-06-14 13:00:38,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 161 transitions, 1566 flow [2024-06-14 13:00:38,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 161 transitions, 1484 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-14 13:00:38,587 INFO L231 Difference]: Finished difference. Result has 105 places, 124 transitions, 1117 flow [2024-06-14 13:00:38,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=896, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1117, PETRI_PLACES=105, PETRI_TRANSITIONS=124} [2024-06-14 13:00:38,588 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 63 predicate places. [2024-06-14 13:00:38,588 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 124 transitions, 1117 flow [2024-06-14 13:00:38,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-14 13:00:38,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:00:38,589 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:00:38,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-14 13:00:38,589 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:00:38,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:00:38,589 INFO L85 PathProgramCache]: Analyzing trace with hash -651919197, now seen corresponding path program 2 times [2024-06-14 13:00:38,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:00:38,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419405901] [2024-06-14 13:00:38,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:00:38,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:00:38,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:00:39,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:00:39,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:00:39,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419405901] [2024-06-14 13:00:39,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419405901] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:00:39,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:00:39,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:00:39,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788365938] [2024-06-14 13:00:39,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:00:39,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:00:39,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:00:39,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:00:39,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:00:39,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:00:39,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 124 transitions, 1117 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-14 13:00:39,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:00:39,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:00:39,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:00:40,150 INFO L124 PetriNetUnfolderBase]: 1842/2752 cut-off events. [2024-06-14 13:00:40,150 INFO L125 PetriNetUnfolderBase]: For 31537/31539 co-relation queries the response was YES. [2024-06-14 13:00:40,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14560 conditions, 2752 events. 1842/2752 cut-off events. For 31537/31539 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 12609 event pairs, 574 based on Foata normal form. 4/2754 useless extension candidates. Maximal degree in co-relation 14508. Up to 2577 conditions per place. [2024-06-14 13:00:40,166 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 137 selfloop transitions, 33 changer transitions 0/173 dead transitions. [2024-06-14 13:00:40,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 173 transitions, 1708 flow [2024-06-14 13:00:40,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:00:40,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:00:40,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-06-14 13:00:40,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4024390243902439 [2024-06-14 13:00:40,168 INFO L175 Difference]: Start difference. First operand has 105 places, 124 transitions, 1117 flow. Second operand 10 states and 165 transitions. [2024-06-14 13:00:40,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 173 transitions, 1708 flow [2024-06-14 13:00:40,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 173 transitions, 1638 flow, removed 22 selfloop flow, removed 3 redundant places. [2024-06-14 13:00:40,197 INFO L231 Difference]: Finished difference. Result has 113 places, 132 transitions, 1212 flow [2024-06-14 13:00:40,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1063, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1212, PETRI_PLACES=113, PETRI_TRANSITIONS=132} [2024-06-14 13:00:40,198 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 71 predicate places. [2024-06-14 13:00:40,198 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 132 transitions, 1212 flow [2024-06-14 13:00:40,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-14 13:00:40,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:00:40,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:00:40,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-14 13:00:40,199 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:00:40,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:00:40,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1513202414, now seen corresponding path program 2 times [2024-06-14 13:00:40,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:00:40,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801132245] [2024-06-14 13:00:40,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:00:40,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:00:40,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:00:41,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:00:41,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:00:41,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801132245] [2024-06-14 13:00:41,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801132245] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:00:41,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:00:41,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:00:41,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962601888] [2024-06-14 13:00:41,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:00:41,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:00:41,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:00:41,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:00:41,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:00:41,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-14 13:00:41,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 132 transitions, 1212 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:00:41,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:00:41,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-14 13:00:41,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:00:41,882 INFO L124 PetriNetUnfolderBase]: 1855/2782 cut-off events. [2024-06-14 13:00:41,883 INFO L125 PetriNetUnfolderBase]: For 39209/39300 co-relation queries the response was YES. [2024-06-14 13:00:41,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15387 conditions, 2782 events. 1855/2782 cut-off events. For 39209/39300 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 13058 event pairs, 542 based on Foata normal form. 10/2739 useless extension candidates. Maximal degree in co-relation 15332. Up to 2524 conditions per place. [2024-06-14 13:00:41,902 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 119 selfloop transitions, 47 changer transitions 0/185 dead transitions. [2024-06-14 13:00:41,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 185 transitions, 1900 flow [2024-06-14 13:00:41,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:00:41,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:00:41,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-14 13:00:41,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4573170731707317 [2024-06-14 13:00:41,904 INFO L175 Difference]: Start difference. First operand has 113 places, 132 transitions, 1212 flow. Second operand 8 states and 150 transitions. [2024-06-14 13:00:41,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 185 transitions, 1900 flow [2024-06-14 13:00:41,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 185 transitions, 1854 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-14 13:00:41,939 INFO L231 Difference]: Finished difference. Result has 118 places, 150 transitions, 1457 flow [2024-06-14 13:00:41,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1166, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1457, PETRI_PLACES=118, PETRI_TRANSITIONS=150} [2024-06-14 13:00:41,940 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 76 predicate places. [2024-06-14 13:00:41,940 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 150 transitions, 1457 flow [2024-06-14 13:00:41,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:00:41,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:00:41,940 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:00:41,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-14 13:00:41,941 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:00:41,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:00:41,941 INFO L85 PathProgramCache]: Analyzing trace with hash -651924777, now seen corresponding path program 3 times [2024-06-14 13:00:41,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:00:41,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692709222] [2024-06-14 13:00:41,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:00:41,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:00:41,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:00:42,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:00:42,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:00:42,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692709222] [2024-06-14 13:00:42,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692709222] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:00:42,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:00:42,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:00:42,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171754457] [2024-06-14 13:00:42,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:00:42,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:00:42,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:00:42,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:00:42,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:00:42,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:00:42,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 150 transitions, 1457 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-14 13:00:42,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:00:42,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:00:42,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:00:43,434 INFO L124 PetriNetUnfolderBase]: 1894/2825 cut-off events. [2024-06-14 13:00:43,434 INFO L125 PetriNetUnfolderBase]: For 40649/40651 co-relation queries the response was YES. [2024-06-14 13:00:43,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16218 conditions, 2825 events. 1894/2825 cut-off events. For 40649/40651 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 13007 event pairs, 577 based on Foata normal form. 4/2827 useless extension candidates. Maximal degree in co-relation 16159. Up to 2656 conditions per place. [2024-06-14 13:00:43,451 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 146 selfloop transitions, 32 changer transitions 0/181 dead transitions. [2024-06-14 13:00:43,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 181 transitions, 1903 flow [2024-06-14 13:00:43,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:00:43,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:00:43,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-14 13:00:43,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4176829268292683 [2024-06-14 13:00:43,453 INFO L175 Difference]: Start difference. First operand has 118 places, 150 transitions, 1457 flow. Second operand 8 states and 137 transitions. [2024-06-14 13:00:43,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 181 transitions, 1903 flow [2024-06-14 13:00:43,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 181 transitions, 1855 flow, removed 23 selfloop flow, removed 1 redundant places. [2024-06-14 13:00:43,493 INFO L231 Difference]: Finished difference. Result has 125 places, 150 transitions, 1481 flow [2024-06-14 13:00:43,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1409, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1481, PETRI_PLACES=125, PETRI_TRANSITIONS=150} [2024-06-14 13:00:43,494 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 83 predicate places. [2024-06-14 13:00:43,494 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 150 transitions, 1481 flow [2024-06-14 13:00:43,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-14 13:00:43,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:00:43,494 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:00:43,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-14 13:00:43,494 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:00:43,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:00:43,495 INFO L85 PathProgramCache]: Analyzing trace with hash 2125059486, now seen corresponding path program 1 times [2024-06-14 13:00:43,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:00:43,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728029326] [2024-06-14 13:00:43,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:00:43,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:00:43,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:00:44,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:00:44,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:00:44,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728029326] [2024-06-14 13:00:44,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728029326] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:00:44,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:00:44,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:00:44,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698362336] [2024-06-14 13:00:44,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:00:44,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:00:44,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:00:44,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:00:44,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:00:44,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:00:44,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 150 transitions, 1481 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-14 13:00:44,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:00:44,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:00:44,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:00:45,079 INFO L124 PetriNetUnfolderBase]: 1889/2818 cut-off events. [2024-06-14 13:00:45,080 INFO L125 PetriNetUnfolderBase]: For 43838/43840 co-relation queries the response was YES. [2024-06-14 13:00:45,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16360 conditions, 2818 events. 1889/2818 cut-off events. For 43838/43840 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 12980 event pairs, 584 based on Foata normal form. 4/2820 useless extension candidates. Maximal degree in co-relation 16298. Up to 2750 conditions per place. [2024-06-14 13:00:45,102 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 150 selfloop transitions, 17 changer transitions 0/170 dead transitions. [2024-06-14 13:00:45,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 170 transitions, 1891 flow [2024-06-14 13:00:45,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 13:00:45,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 13:00:45,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 99 transitions. [2024-06-14 13:00:45,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4024390243902439 [2024-06-14 13:00:45,109 INFO L175 Difference]: Start difference. First operand has 125 places, 150 transitions, 1481 flow. Second operand 6 states and 99 transitions. [2024-06-14 13:00:45,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 170 transitions, 1891 flow [2024-06-14 13:00:45,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 170 transitions, 1827 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-14 13:00:45,152 INFO L231 Difference]: Finished difference. Result has 124 places, 153 transitions, 1495 flow [2024-06-14 13:00:45,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1417, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1495, PETRI_PLACES=124, PETRI_TRANSITIONS=153} [2024-06-14 13:00:45,153 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 82 predicate places. [2024-06-14 13:00:45,153 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 153 transitions, 1495 flow [2024-06-14 13:00:45,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-14 13:00:45,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:00:45,153 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:00:45,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-14 13:00:45,154 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:00:45,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:00:45,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1290952007, now seen corresponding path program 4 times [2024-06-14 13:00:45,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:00:45,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62551387] [2024-06-14 13:00:45,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:00:45,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:00:45,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:00:45,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:00:45,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:00:45,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62551387] [2024-06-14 13:00:45,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62551387] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:00:45,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:00:45,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:00:45,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471517970] [2024-06-14 13:00:45,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:00:45,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:00:45,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:00:45,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:00:45,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:00:46,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:00:46,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 153 transitions, 1495 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-14 13:00:46,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:00:46,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:00:46,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:00:46,531 INFO L124 PetriNetUnfolderBase]: 1911/2850 cut-off events. [2024-06-14 13:00:46,532 INFO L125 PetriNetUnfolderBase]: For 48545/48547 co-relation queries the response was YES. [2024-06-14 13:00:46,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16961 conditions, 2850 events. 1911/2850 cut-off events. For 48545/48547 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 13131 event pairs, 586 based on Foata normal form. 4/2852 useless extension candidates. Maximal degree in co-relation 16898. Up to 2677 conditions per place. [2024-06-14 13:00:46,552 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 157 selfloop transitions, 28 changer transitions 0/188 dead transitions. [2024-06-14 13:00:46,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 188 transitions, 2064 flow [2024-06-14 13:00:46,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:00:46,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:00:46,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 127 transitions. [2024-06-14 13:00:46,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4425087108013937 [2024-06-14 13:00:46,554 INFO L175 Difference]: Start difference. First operand has 124 places, 153 transitions, 1495 flow. Second operand 7 states and 127 transitions. [2024-06-14 13:00:46,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 188 transitions, 2064 flow [2024-06-14 13:00:46,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 188 transitions, 2028 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-14 13:00:46,595 INFO L231 Difference]: Finished difference. Result has 128 places, 157 transitions, 1573 flow [2024-06-14 13:00:46,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1459, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1573, PETRI_PLACES=128, PETRI_TRANSITIONS=157} [2024-06-14 13:00:46,596 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 86 predicate places. [2024-06-14 13:00:46,596 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 157 transitions, 1573 flow [2024-06-14 13:00:46,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-14 13:00:46,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:00:46,597 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:00:46,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-14 13:00:46,597 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:00:46,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:00:46,597 INFO L85 PathProgramCache]: Analyzing trace with hash 2117434974, now seen corresponding path program 3 times [2024-06-14 13:00:46,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:00:46,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986769678] [2024-06-14 13:00:46,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:00:46,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:00:46,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:00:47,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:00:47,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:00:47,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986769678] [2024-06-14 13:00:47,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986769678] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:00:47,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:00:47,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:00:47,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607315762] [2024-06-14 13:00:47,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:00:47,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:00:47,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:00:47,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:00:47,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:00:47,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-14 13:00:47,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 157 transitions, 1573 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:00:47,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:00:47,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-14 13:00:47,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:00:48,258 INFO L124 PetriNetUnfolderBase]: 1848/2776 cut-off events. [2024-06-14 13:00:48,258 INFO L125 PetriNetUnfolderBase]: For 57433/57539 co-relation queries the response was YES. [2024-06-14 13:00:48,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17259 conditions, 2776 events. 1848/2776 cut-off events. For 57433/57539 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 12999 event pairs, 537 based on Foata normal form. 19/2738 useless extension candidates. Maximal degree in co-relation 17194. Up to 2588 conditions per place. [2024-06-14 13:00:48,277 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 128 selfloop transitions, 36 changer transitions 0/185 dead transitions. [2024-06-14 13:00:48,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 185 transitions, 1973 flow [2024-06-14 13:00:48,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:00:48,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:00:48,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 129 transitions. [2024-06-14 13:00:48,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44947735191637633 [2024-06-14 13:00:48,279 INFO L175 Difference]: Start difference. First operand has 128 places, 157 transitions, 1573 flow. Second operand 7 states and 129 transitions. [2024-06-14 13:00:48,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 185 transitions, 1973 flow [2024-06-14 13:00:48,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 185 transitions, 1851 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-14 13:00:48,342 INFO L231 Difference]: Finished difference. Result has 129 places, 157 transitions, 1537 flow [2024-06-14 13:00:48,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1451, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1537, PETRI_PLACES=129, PETRI_TRANSITIONS=157} [2024-06-14 13:00:48,343 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 87 predicate places. [2024-06-14 13:00:48,343 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 157 transitions, 1537 flow [2024-06-14 13:00:48,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:00:48,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:00:48,343 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:00:48,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-14 13:00:48,344 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:00:48,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:00:48,344 INFO L85 PathProgramCache]: Analyzing trace with hash 2117440709, now seen corresponding path program 5 times [2024-06-14 13:00:48,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:00:48,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000682471] [2024-06-14 13:00:48,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:00:48,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:00:48,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:00:49,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:00:49,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:00:49,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000682471] [2024-06-14 13:00:49,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000682471] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:00:49,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:00:49,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:00:49,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501685846] [2024-06-14 13:00:49,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:00:49,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:00:49,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:00:49,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:00:49,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:00:49,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:00:49,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 157 transitions, 1537 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-14 13:00:49,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:00:49,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:00:49,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:00:49,687 INFO L124 PetriNetUnfolderBase]: 1925/2871 cut-off events. [2024-06-14 13:00:49,687 INFO L125 PetriNetUnfolderBase]: For 56644/56646 co-relation queries the response was YES. [2024-06-14 13:00:49,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17369 conditions, 2871 events. 1925/2871 cut-off events. For 56644/56646 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 13218 event pairs, 592 based on Foata normal form. 4/2873 useless extension candidates. Maximal degree in co-relation 17304. Up to 2685 conditions per place. [2024-06-14 13:00:49,709 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 156 selfloop transitions, 29 changer transitions 0/188 dead transitions. [2024-06-14 13:00:49,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 188 transitions, 2097 flow [2024-06-14 13:00:49,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:00:49,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:00:49,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 124 transitions. [2024-06-14 13:00:49,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43205574912891986 [2024-06-14 13:00:49,711 INFO L175 Difference]: Start difference. First operand has 129 places, 157 transitions, 1537 flow. Second operand 7 states and 124 transitions. [2024-06-14 13:00:49,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 188 transitions, 2097 flow [2024-06-14 13:00:49,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 188 transitions, 2029 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-14 13:00:49,773 INFO L231 Difference]: Finished difference. Result has 131 places, 160 transitions, 1563 flow [2024-06-14 13:00:49,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1469, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1563, PETRI_PLACES=131, PETRI_TRANSITIONS=160} [2024-06-14 13:00:49,773 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 89 predicate places. [2024-06-14 13:00:49,773 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 160 transitions, 1563 flow [2024-06-14 13:00:49,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-14 13:00:49,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:00:49,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:00:49,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-14 13:00:49,774 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:00:49,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:00:49,775 INFO L85 PathProgramCache]: Analyzing trace with hash 2124792359, now seen corresponding path program 6 times [2024-06-14 13:00:49,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:00:49,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863901967] [2024-06-14 13:00:49,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:00:49,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:00:49,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:00:50,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:00:50,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:00:50,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863901967] [2024-06-14 13:00:50,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863901967] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:00:50,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:00:50,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:00:50,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130528543] [2024-06-14 13:00:50,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:00:50,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:00:50,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:00:50,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:00:50,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:00:50,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:00:50,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 160 transitions, 1563 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-14 13:00:50,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:00:50,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:00:50,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:00:51,111 INFO L124 PetriNetUnfolderBase]: 1915/2857 cut-off events. [2024-06-14 13:00:51,111 INFO L125 PetriNetUnfolderBase]: For 60286/60288 co-relation queries the response was YES. [2024-06-14 13:00:51,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17472 conditions, 2857 events. 1915/2857 cut-off events. For 60286/60288 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 13179 event pairs, 586 based on Foata normal form. 6/2861 useless extension candidates. Maximal degree in co-relation 17406. Up to 2784 conditions per place. [2024-06-14 13:00:51,133 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 165 selfloop transitions, 15 changer transitions 0/183 dead transitions. [2024-06-14 13:00:51,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 183 transitions, 1997 flow [2024-06-14 13:00:51,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:00:51,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:00:51,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 113 transitions. [2024-06-14 13:00:51,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39372822299651566 [2024-06-14 13:00:51,135 INFO L175 Difference]: Start difference. First operand has 131 places, 160 transitions, 1563 flow. Second operand 7 states and 113 transitions. [2024-06-14 13:00:51,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 183 transitions, 1997 flow [2024-06-14 13:00:51,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 183 transitions, 1949 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-14 13:00:51,209 INFO L231 Difference]: Finished difference. Result has 135 places, 161 transitions, 1565 flow [2024-06-14 13:00:51,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1518, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1565, PETRI_PLACES=135, PETRI_TRANSITIONS=161} [2024-06-14 13:00:51,210 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 93 predicate places. [2024-06-14 13:00:51,210 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 161 transitions, 1565 flow [2024-06-14 13:00:51,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-14 13:00:51,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:00:51,210 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:00:51,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-14 13:00:51,211 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:00:51,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:00:51,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1472688367, now seen corresponding path program 1 times [2024-06-14 13:00:51,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:00:51,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257962971] [2024-06-14 13:00:51,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:00:51,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:00:51,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:00:52,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:00:52,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:00:52,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257962971] [2024-06-14 13:00:52,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257962971] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:00:52,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:00:52,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:00:52,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070566855] [2024-06-14 13:00:52,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:00:52,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:00:52,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:00:52,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:00:52,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:00:52,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-14 13:00:52,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 161 transitions, 1565 flow. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 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) [2024-06-14 13:00:52,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:00:52,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-14 13:00:52,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:00:52,593 INFO L124 PetriNetUnfolderBase]: 1828/2754 cut-off events. [2024-06-14 13:00:52,593 INFO L125 PetriNetUnfolderBase]: For 64669/64688 co-relation queries the response was YES. [2024-06-14 13:00:52,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17046 conditions, 2754 events. 1828/2754 cut-off events. For 64669/64688 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 12791 event pairs, 571 based on Foata normal form. 13/2755 useless extension candidates. Maximal degree in co-relation 16979. Up to 2642 conditions per place. [2024-06-14 13:00:52,614 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 140 selfloop transitions, 15 changer transitions 0/170 dead transitions. [2024-06-14 13:00:52,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 170 transitions, 1897 flow [2024-06-14 13:00:52,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 13:00:52,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 13:00:52,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 84 transitions. [2024-06-14 13:00:52,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4097560975609756 [2024-06-14 13:00:52,615 INFO L175 Difference]: Start difference. First operand has 135 places, 161 transitions, 1565 flow. Second operand 5 states and 84 transitions. [2024-06-14 13:00:52,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 170 transitions, 1897 flow [2024-06-14 13:00:52,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 170 transitions, 1857 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-14 13:00:52,688 INFO L231 Difference]: Finished difference. Result has 135 places, 161 transitions, 1564 flow [2024-06-14 13:00:52,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1525, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1564, PETRI_PLACES=135, PETRI_TRANSITIONS=161} [2024-06-14 13:00:52,688 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 93 predicate places. [2024-06-14 13:00:52,689 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 161 transitions, 1564 flow [2024-06-14 13:00:52,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 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) [2024-06-14 13:00:52,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:00:52,689 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:00:52,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-14 13:00:52,689 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:00:52,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:00:52,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1341313866, now seen corresponding path program 1 times [2024-06-14 13:00:52,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:00:52,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401734257] [2024-06-14 13:00:52,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:00:52,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:00:52,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:00:53,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:00:53,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:00:53,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401734257] [2024-06-14 13:00:53,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401734257] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:00:53,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:00:53,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:00:53,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132753116] [2024-06-14 13:00:53,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:00:53,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:00:53,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:00:53,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:00:53,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:00:53,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-14 13:00:53,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 161 transitions, 1564 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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) [2024-06-14 13:00:53,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:00:53,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-14 13:00:53,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:00:54,404 INFO L124 PetriNetUnfolderBase]: 1989/2995 cut-off events. [2024-06-14 13:00:54,404 INFO L125 PetriNetUnfolderBase]: For 82199/82306 co-relation queries the response was YES. [2024-06-14 13:00:54,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18936 conditions, 2995 events. 1989/2995 cut-off events. For 82199/82306 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 14320 event pairs, 390 based on Foata normal form. 30/2968 useless extension candidates. Maximal degree in co-relation 18868. Up to 2282 conditions per place. [2024-06-14 13:00:54,426 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 125 selfloop transitions, 78 changer transitions 0/226 dead transitions. [2024-06-14 13:00:54,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 226 transitions, 2474 flow [2024-06-14 13:00:54,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:00:54,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:00:54,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 181 transitions. [2024-06-14 13:00:54,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4905149051490515 [2024-06-14 13:00:54,428 INFO L175 Difference]: Start difference. First operand has 135 places, 161 transitions, 1564 flow. Second operand 9 states and 181 transitions. [2024-06-14 13:00:54,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 226 transitions, 2474 flow [2024-06-14 13:00:54,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 226 transitions, 2429 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-14 13:00:54,526 INFO L231 Difference]: Finished difference. Result has 142 places, 171 transitions, 1869 flow [2024-06-14 13:00:54,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1519, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1869, PETRI_PLACES=142, PETRI_TRANSITIONS=171} [2024-06-14 13:00:54,527 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 100 predicate places. [2024-06-14 13:00:54,527 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 171 transitions, 1869 flow [2024-06-14 13:00:54,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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) [2024-06-14 13:00:54,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:00:54,528 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:00:54,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-14 13:00:54,528 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:00:54,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:00:54,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1341253292, now seen corresponding path program 1 times [2024-06-14 13:00:54,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:00:54,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879225288] [2024-06-14 13:00:54,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:00:54,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:00:54,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:00:55,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:00:55,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:00:55,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879225288] [2024-06-14 13:00:55,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879225288] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:00:55,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:00:55,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:00:55,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795649504] [2024-06-14 13:00:55,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:00:55,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:00:55,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:00:55,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:00:55,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:00:55,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:00:55,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 171 transitions, 1869 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:00:55,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:00:55,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:00:55,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:00:56,356 INFO L124 PetriNetUnfolderBase]: 2090/3125 cut-off events. [2024-06-14 13:00:56,356 INFO L125 PetriNetUnfolderBase]: For 82298/82300 co-relation queries the response was YES. [2024-06-14 13:00:56,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20629 conditions, 3125 events. 2090/3125 cut-off events. For 82298/82300 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 14873 event pairs, 545 based on Foata normal form. 4/3127 useless extension candidates. Maximal degree in co-relation 20559. Up to 2687 conditions per place. [2024-06-14 13:00:56,379 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 173 selfloop transitions, 62 changer transitions 0/238 dead transitions. [2024-06-14 13:00:56,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 238 transitions, 2744 flow [2024-06-14 13:00:56,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 13:00:56,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 13:00:56,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 190 transitions. [2024-06-14 13:00:56,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4212860310421286 [2024-06-14 13:00:56,381 INFO L175 Difference]: Start difference. First operand has 142 places, 171 transitions, 1869 flow. Second operand 11 states and 190 transitions. [2024-06-14 13:00:56,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 238 transitions, 2744 flow [2024-06-14 13:00:56,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 238 transitions, 2680 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-06-14 13:00:56,486 INFO L231 Difference]: Finished difference. Result has 152 places, 184 transitions, 2122 flow [2024-06-14 13:00:56,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1805, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2122, PETRI_PLACES=152, PETRI_TRANSITIONS=184} [2024-06-14 13:00:56,486 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 110 predicate places. [2024-06-14 13:00:56,486 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 184 transitions, 2122 flow [2024-06-14 13:00:56,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:00:56,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:00:56,487 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:00:56,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-14 13:00:56,487 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:00:56,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:00:56,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1341253416, now seen corresponding path program 2 times [2024-06-14 13:00:56,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:00:56,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099524777] [2024-06-14 13:00:56,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:00:56,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:00:56,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:00:57,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:00:57,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:00:57,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099524777] [2024-06-14 13:00:57,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099524777] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:00:57,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:00:57,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:00:57,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804845394] [2024-06-14 13:00:57,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:00:57,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:00:57,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:00:57,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:00:57,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:00:57,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-14 13:00:57,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 184 transitions, 2122 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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) [2024-06-14 13:00:57,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:00:57,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-14 13:00:57,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:00:58,254 INFO L124 PetriNetUnfolderBase]: 2056/3091 cut-off events. [2024-06-14 13:00:58,254 INFO L125 PetriNetUnfolderBase]: For 96422/96522 co-relation queries the response was YES. [2024-06-14 13:00:58,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21429 conditions, 3091 events. 2056/3091 cut-off events. For 96422/96522 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 14948 event pairs, 561 based on Foata normal form. 17/3049 useless extension candidates. Maximal degree in co-relation 21355. Up to 2804 conditions per place. [2024-06-14 13:00:58,281 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 138 selfloop transitions, 63 changer transitions 0/227 dead transitions. [2024-06-14 13:00:58,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 227 transitions, 2656 flow [2024-06-14 13:00:58,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:00:58,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:00:58,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 174 transitions. [2024-06-14 13:00:58,282 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.424390243902439 [2024-06-14 13:00:58,282 INFO L175 Difference]: Start difference. First operand has 152 places, 184 transitions, 2122 flow. Second operand 10 states and 174 transitions. [2024-06-14 13:00:58,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 227 transitions, 2656 flow [2024-06-14 13:00:58,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 227 transitions, 2547 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-14 13:00:58,395 INFO L231 Difference]: Finished difference. Result has 156 places, 186 transitions, 2179 flow [2024-06-14 13:00:58,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2013, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2179, PETRI_PLACES=156, PETRI_TRANSITIONS=186} [2024-06-14 13:00:58,396 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 114 predicate places. [2024-06-14 13:00:58,396 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 186 transitions, 2179 flow [2024-06-14 13:00:58,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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) [2024-06-14 13:00:58,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:00:58,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:00:58,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-14 13:00:58,397 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:00:58,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:00:58,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1223165736, now seen corresponding path program 3 times [2024-06-14 13:00:58,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:00:58,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923794288] [2024-06-14 13:00:58,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:00:58,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:00:58,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:00:59,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:00:59,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:00:59,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923794288] [2024-06-14 13:00:59,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923794288] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:00:59,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:00:59,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:00:59,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288109637] [2024-06-14 13:00:59,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:00:59,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:00:59,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:00:59,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:00:59,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:00:59,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-14 13:00:59,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 186 transitions, 2179 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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) [2024-06-14 13:00:59,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:00:59,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-14 13:00:59,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:01:00,474 INFO L124 PetriNetUnfolderBase]: 2113/3190 cut-off events. [2024-06-14 13:01:00,474 INFO L125 PetriNetUnfolderBase]: For 106532/106603 co-relation queries the response was YES. [2024-06-14 13:01:00,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22173 conditions, 3190 events. 2113/3190 cut-off events. For 106532/106603 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 15547 event pairs, 569 based on Foata normal form. 18/3148 useless extension candidates. Maximal degree in co-relation 22097. Up to 2843 conditions per place. [2024-06-14 13:01:00,506 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 155 selfloop transitions, 50 changer transitions 0/231 dead transitions. [2024-06-14 13:01:00,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 231 transitions, 2905 flow [2024-06-14 13:01:00,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:01:00,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:01:00,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-14 13:01:00,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45528455284552843 [2024-06-14 13:01:00,508 INFO L175 Difference]: Start difference. First operand has 156 places, 186 transitions, 2179 flow. Second operand 9 states and 168 transitions. [2024-06-14 13:01:00,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 231 transitions, 2905 flow [2024-06-14 13:01:00,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 231 transitions, 2763 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-14 13:01:00,620 INFO L231 Difference]: Finished difference. Result has 157 places, 188 transitions, 2183 flow [2024-06-14 13:01:00,620 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2037, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2183, PETRI_PLACES=157, PETRI_TRANSITIONS=188} [2024-06-14 13:01:00,621 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 115 predicate places. [2024-06-14 13:01:00,621 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 188 transitions, 2183 flow [2024-06-14 13:01:00,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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) [2024-06-14 13:01:00,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:01:00,621 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:01:00,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-14 13:01:00,621 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:01:00,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:01:00,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1222987982, now seen corresponding path program 2 times [2024-06-14 13:01:00,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:01:00,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822147579] [2024-06-14 13:01:00,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:01:00,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:01:00,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:01:01,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:01:01,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:01:01,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822147579] [2024-06-14 13:01:01,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822147579] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:01:01,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:01:01,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:01:01,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859580815] [2024-06-14 13:01:01,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:01:01,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:01:01,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:01:01,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:01:01,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:01:01,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:01:01,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 188 transitions, 2183 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:01:01,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:01:01,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:01:01,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:01:02,586 INFO L124 PetriNetUnfolderBase]: 2211/3314 cut-off events. [2024-06-14 13:01:02,586 INFO L125 PetriNetUnfolderBase]: For 101574/101576 co-relation queries the response was YES. [2024-06-14 13:01:02,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22751 conditions, 3314 events. 2211/3314 cut-off events. For 101574/101576 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 15917 event pairs, 597 based on Foata normal form. 4/3316 useless extension candidates. Maximal degree in co-relation 22674. Up to 3104 conditions per place. [2024-06-14 13:01:02,618 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 191 selfloop transitions, 41 changer transitions 0/235 dead transitions. [2024-06-14 13:01:02,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 235 transitions, 2804 flow [2024-06-14 13:01:02,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 13:01:02,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 13:01:02,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 179 transitions. [2024-06-14 13:01:02,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3968957871396896 [2024-06-14 13:01:02,619 INFO L175 Difference]: Start difference. First operand has 157 places, 188 transitions, 2183 flow. Second operand 11 states and 179 transitions. [2024-06-14 13:01:02,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 235 transitions, 2804 flow [2024-06-14 13:01:02,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 235 transitions, 2694 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-14 13:01:02,768 INFO L231 Difference]: Finished difference. Result has 161 places, 191 transitions, 2202 flow [2024-06-14 13:01:02,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2073, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2202, PETRI_PLACES=161, PETRI_TRANSITIONS=191} [2024-06-14 13:01:02,769 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 119 predicate places. [2024-06-14 13:01:02,769 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 191 transitions, 2202 flow [2024-06-14 13:01:02,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:01:02,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:01:02,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:01:02,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-14 13:01:02,770 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:01:02,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:01:02,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1222981038, now seen corresponding path program 1 times [2024-06-14 13:01:02,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:01:02,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835456273] [2024-06-14 13:01:02,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:01:02,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:01:02,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:01:03,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:01:03,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:01:03,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835456273] [2024-06-14 13:01:03,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835456273] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:01:03,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:01:03,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:01:03,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219410945] [2024-06-14 13:01:03,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:01:03,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:01:03,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:01:03,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:01:03,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:01:03,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:01:03,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 191 transitions, 2202 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:01:03,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:01:03,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:01:03,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:01:04,562 INFO L124 PetriNetUnfolderBase]: 2228/3341 cut-off events. [2024-06-14 13:01:04,563 INFO L125 PetriNetUnfolderBase]: For 107213/107215 co-relation queries the response was YES. [2024-06-14 13:01:04,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22982 conditions, 3341 events. 2228/3341 cut-off events. For 107213/107215 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 16048 event pairs, 594 based on Foata normal form. 4/3343 useless extension candidates. Maximal degree in co-relation 22904. Up to 3204 conditions per place. [2024-06-14 13:01:04,604 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 194 selfloop transitions, 26 changer transitions 0/223 dead transitions. [2024-06-14 13:01:04,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 223 transitions, 2750 flow [2024-06-14 13:01:04,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:01:04,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:01:04,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 133 transitions. [2024-06-14 13:01:04,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4054878048780488 [2024-06-14 13:01:04,606 INFO L175 Difference]: Start difference. First operand has 161 places, 191 transitions, 2202 flow. Second operand 8 states and 133 transitions. [2024-06-14 13:01:04,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 223 transitions, 2750 flow [2024-06-14 13:01:04,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 223 transitions, 2654 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-14 13:01:04,824 INFO L231 Difference]: Finished difference. Result has 160 places, 193 transitions, 2193 flow [2024-06-14 13:01:04,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2106, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2193, PETRI_PLACES=160, PETRI_TRANSITIONS=193} [2024-06-14 13:01:04,825 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 118 predicate places. [2024-06-14 13:01:04,825 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 193 transitions, 2193 flow [2024-06-14 13:01:04,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:01:04,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:01:04,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:01:04,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-14 13:01:04,826 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:01:04,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:01:04,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1223160962, now seen corresponding path program 3 times [2024-06-14 13:01:04,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:01:04,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879507192] [2024-06-14 13:01:04,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:01:04,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:01:04,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:01:05,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:01:05,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:01:05,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879507192] [2024-06-14 13:01:05,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879507192] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:01:05,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:01:05,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:01:05,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208488222] [2024-06-14 13:01:05,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:01:05,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:01:05,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:01:05,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:01:05,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:01:05,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:01:05,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 193 transitions, 2193 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:01:05,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:01:05,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:01:05,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:01:06,620 INFO L124 PetriNetUnfolderBase]: 2250/3373 cut-off events. [2024-06-14 13:01:06,621 INFO L125 PetriNetUnfolderBase]: For 113999/114001 co-relation queries the response was YES. [2024-06-14 13:01:06,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23441 conditions, 3373 events. 2250/3373 cut-off events. For 113999/114001 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 16283 event pairs, 595 based on Foata normal form. 4/3375 useless extension candidates. Maximal degree in co-relation 23362. Up to 3163 conditions per place. [2024-06-14 13:01:06,649 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 189 selfloop transitions, 40 changer transitions 0/232 dead transitions. [2024-06-14 13:01:06,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 232 transitions, 2794 flow [2024-06-14 13:01:06,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:01:06,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:01:06,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-14 13:01:06,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4146341463414634 [2024-06-14 13:01:06,651 INFO L175 Difference]: Start difference. First operand has 160 places, 193 transitions, 2193 flow. Second operand 9 states and 153 transitions. [2024-06-14 13:01:06,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 232 transitions, 2794 flow [2024-06-14 13:01:06,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 232 transitions, 2738 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-14 13:01:06,808 INFO L231 Difference]: Finished difference. Result has 164 places, 196 transitions, 2270 flow [2024-06-14 13:01:06,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2137, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2270, PETRI_PLACES=164, PETRI_TRANSITIONS=196} [2024-06-14 13:01:06,809 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 122 predicate places. [2024-06-14 13:01:06,809 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 196 transitions, 2270 flow [2024-06-14 13:01:06,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:01:06,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:01:06,809 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:01:06,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-14 13:01:06,810 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:01:06,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:01:06,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1223165612, now seen corresponding path program 4 times [2024-06-14 13:01:06,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:01:06,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795522283] [2024-06-14 13:01:06,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:01:06,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:01:06,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:01:07,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:01:07,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:01:07,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795522283] [2024-06-14 13:01:07,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795522283] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:01:07,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:01:07,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:01:07,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971396156] [2024-06-14 13:01:07,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:01:07,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:01:07,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:01:07,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:01:07,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:01:08,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:01:08,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 196 transitions, 2270 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:01:08,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:01:08,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:01:08,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:01:08,850 INFO L124 PetriNetUnfolderBase]: 2272/3405 cut-off events. [2024-06-14 13:01:08,850 INFO L125 PetriNetUnfolderBase]: For 121428/121430 co-relation queries the response was YES. [2024-06-14 13:01:08,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23961 conditions, 3405 events. 2272/3405 cut-off events. For 121428/121430 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 16441 event pairs, 589 based on Foata normal form. 4/3407 useless extension candidates. Maximal degree in co-relation 23881. Up to 3163 conditions per place. [2024-06-14 13:01:08,880 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 195 selfloop transitions, 44 changer transitions 0/242 dead transitions. [2024-06-14 13:01:08,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 242 transitions, 2934 flow [2024-06-14 13:01:08,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:01:08,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:01:08,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-06-14 13:01:08,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4097560975609756 [2024-06-14 13:01:08,883 INFO L175 Difference]: Start difference. First operand has 164 places, 196 transitions, 2270 flow. Second operand 10 states and 168 transitions. [2024-06-14 13:01:08,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 242 transitions, 2934 flow [2024-06-14 13:01:09,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 242 transitions, 2834 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-14 13:01:09,076 INFO L231 Difference]: Finished difference. Result has 168 places, 201 transitions, 2354 flow [2024-06-14 13:01:09,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2170, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2354, PETRI_PLACES=168, PETRI_TRANSITIONS=201} [2024-06-14 13:01:09,078 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 126 predicate places. [2024-06-14 13:01:09,078 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 201 transitions, 2354 flow [2024-06-14 13:01:09,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:01:09,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:01:09,078 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:01:09,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-14 13:01:09,078 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:01:09,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:01:09,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1216153264, now seen corresponding path program 5 times [2024-06-14 13:01:09,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:01:09,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125187785] [2024-06-14 13:01:09,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:01:09,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:01:09,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:01:10,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:01:10,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:01:10,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125187785] [2024-06-14 13:01:10,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125187785] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:01:10,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:01:10,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:01:10,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603182678] [2024-06-14 13:01:10,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:01:10,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:01:10,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:01:10,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:01:10,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:01:10,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:01:10,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 201 transitions, 2354 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:01:10,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:01:10,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:01:10,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:01:10,882 INFO L124 PetriNetUnfolderBase]: 2294/3437 cut-off events. [2024-06-14 13:01:10,882 INFO L125 PetriNetUnfolderBase]: For 129033/129035 co-relation queries the response was YES. [2024-06-14 13:01:10,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24477 conditions, 3437 events. 2294/3437 cut-off events. For 129033/129035 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 16576 event pairs, 626 based on Foata normal form. 4/3439 useless extension candidates. Maximal degree in co-relation 24395. Up to 3234 conditions per place. [2024-06-14 13:01:10,912 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 199 selfloop transitions, 33 changer transitions 0/235 dead transitions. [2024-06-14 13:01:10,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 235 transitions, 2959 flow [2024-06-14 13:01:10,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:01:10,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:01:10,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-14 13:01:10,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4176829268292683 [2024-06-14 13:01:10,914 INFO L175 Difference]: Start difference. First operand has 168 places, 201 transitions, 2354 flow. Second operand 8 states and 137 transitions. [2024-06-14 13:01:10,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 235 transitions, 2959 flow [2024-06-14 13:01:11,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 235 transitions, 2889 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-14 13:01:11,080 INFO L231 Difference]: Finished difference. Result has 170 places, 204 transitions, 2415 flow [2024-06-14 13:01:11,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2284, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2415, PETRI_PLACES=170, PETRI_TRANSITIONS=204} [2024-06-14 13:01:11,080 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 128 predicate places. [2024-06-14 13:01:11,080 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 204 transitions, 2415 flow [2024-06-14 13:01:11,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:01:11,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:01:11,081 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:01:11,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-14 13:01:11,081 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:01:11,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:01:11,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1216160208, now seen corresponding path program 2 times [2024-06-14 13:01:11,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:01:11,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832460290] [2024-06-14 13:01:11,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:01:11,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:01:11,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:01:11,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:01:11,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:01:11,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832460290] [2024-06-14 13:01:11,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832460290] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:01:11,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:01:11,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:01:11,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168277885] [2024-06-14 13:01:11,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:01:11,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:01:11,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:01:11,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:01:11,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:01:11,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:01:11,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 204 transitions, 2415 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:01:11,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:01:11,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:01:11,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:01:12,616 INFO L124 PetriNetUnfolderBase]: 2311/3464 cut-off events. [2024-06-14 13:01:12,617 INFO L125 PetriNetUnfolderBase]: For 136316/136318 co-relation queries the response was YES. [2024-06-14 13:01:12,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24925 conditions, 3464 events. 2311/3464 cut-off events. For 136316/136318 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 16728 event pairs, 599 based on Foata normal form. 4/3466 useless extension candidates. Maximal degree in co-relation 24841. Up to 3309 conditions per place. [2024-06-14 13:01:12,650 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 201 selfloop transitions, 28 changer transitions 0/232 dead transitions. [2024-06-14 13:01:12,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 232 transitions, 2975 flow [2024-06-14 13:01:12,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:01:12,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:01:12,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 119 transitions. [2024-06-14 13:01:12,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4146341463414634 [2024-06-14 13:01:12,651 INFO L175 Difference]: Start difference. First operand has 170 places, 204 transitions, 2415 flow. Second operand 7 states and 119 transitions. [2024-06-14 13:01:12,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 232 transitions, 2975 flow [2024-06-14 13:01:12,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 232 transitions, 2877 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-14 13:01:12,858 INFO L231 Difference]: Finished difference. Result has 171 places, 206 transitions, 2415 flow [2024-06-14 13:01:12,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2317, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2415, PETRI_PLACES=171, PETRI_TRANSITIONS=206} [2024-06-14 13:01:12,859 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 129 predicate places. [2024-06-14 13:01:12,859 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 206 transitions, 2415 flow [2024-06-14 13:01:12,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:01:12,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:01:12,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:01:12,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-14 13:01:12,859 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:01:12,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:01:12,860 INFO L85 PathProgramCache]: Analyzing trace with hash 515723480, now seen corresponding path program 4 times [2024-06-14 13:01:12,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:01:12,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439736357] [2024-06-14 13:01:12,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:01:12,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:01:12,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:01:13,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:01:13,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:01:13,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439736357] [2024-06-14 13:01:13,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439736357] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:01:13,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:01:13,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:01:13,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321756754] [2024-06-14 13:01:13,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:01:13,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:01:13,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:01:13,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:01:13,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:01:13,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-14 13:01:13,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 206 transitions, 2415 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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) [2024-06-14 13:01:13,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:01:13,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-14 13:01:13,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:01:14,537 INFO L124 PetriNetUnfolderBase]: 2220/3351 cut-off events. [2024-06-14 13:01:14,537 INFO L125 PetriNetUnfolderBase]: For 150889/150976 co-relation queries the response was YES. [2024-06-14 13:01:14,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24749 conditions, 3351 events. 2220/3351 cut-off events. For 150889/150976 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 16373 event pairs, 479 based on Foata normal form. 15/3307 useless extension candidates. Maximal degree in co-relation 24664. Up to 3072 conditions per place. [2024-06-14 13:01:14,569 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 165 selfloop transitions, 43 changer transitions 0/241 dead transitions. [2024-06-14 13:01:14,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 241 transitions, 2941 flow [2024-06-14 13:01:14,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:01:14,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:01:14,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-14 13:01:14,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4420731707317073 [2024-06-14 13:01:14,571 INFO L175 Difference]: Start difference. First operand has 171 places, 206 transitions, 2415 flow. Second operand 8 states and 145 transitions. [2024-06-14 13:01:14,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 241 transitions, 2941 flow [2024-06-14 13:01:14,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 241 transitions, 2863 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-14 13:01:14,784 INFO L231 Difference]: Finished difference. Result has 174 places, 208 transitions, 2465 flow [2024-06-14 13:01:14,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2337, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2465, PETRI_PLACES=174, PETRI_TRANSITIONS=208} [2024-06-14 13:01:14,785 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 132 predicate places. [2024-06-14 13:01:14,785 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 208 transitions, 2465 flow [2024-06-14 13:01:14,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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) [2024-06-14 13:01:14,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:01:14,785 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:01:14,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-14 13:01:14,786 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:01:14,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:01:14,786 INFO L85 PathProgramCache]: Analyzing trace with hash 515728254, now seen corresponding path program 6 times [2024-06-14 13:01:14,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:01:14,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631072704] [2024-06-14 13:01:14,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:01:14,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:01:14,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:01:15,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:01:15,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:01:15,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631072704] [2024-06-14 13:01:15,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631072704] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:01:15,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:01:15,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:01:15,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364534860] [2024-06-14 13:01:15,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:01:15,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:01:15,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:01:15,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:01:15,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:01:15,838 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:01:15,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 208 transitions, 2465 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:01:15,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:01:15,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:01:15,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:01:16,497 INFO L124 PetriNetUnfolderBase]: 2320/3477 cut-off events. [2024-06-14 13:01:16,497 INFO L125 PetriNetUnfolderBase]: For 140811/140813 co-relation queries the response was YES. [2024-06-14 13:01:16,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25042 conditions, 3477 events. 2320/3477 cut-off events. For 140811/140813 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 16771 event pairs, 621 based on Foata normal form. 4/3479 useless extension candidates. Maximal degree in co-relation 24956. Up to 3274 conditions per place. [2024-06-14 13:01:16,531 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 207 selfloop transitions, 35 changer transitions 0/245 dead transitions. [2024-06-14 13:01:16,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 245 transitions, 3104 flow [2024-06-14 13:01:16,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:01:16,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:01:16,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-14 13:01:16,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4268292682926829 [2024-06-14 13:01:16,533 INFO L175 Difference]: Start difference. First operand has 174 places, 208 transitions, 2465 flow. Second operand 8 states and 140 transitions. [2024-06-14 13:01:16,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 245 transitions, 3104 flow [2024-06-14 13:01:16,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 245 transitions, 2996 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-14 13:01:16,762 INFO L231 Difference]: Finished difference. Result has 176 places, 211 transitions, 2498 flow [2024-06-14 13:01:16,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2357, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2498, PETRI_PLACES=176, PETRI_TRANSITIONS=211} [2024-06-14 13:01:16,763 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 134 predicate places. [2024-06-14 13:01:16,763 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 211 transitions, 2498 flow [2024-06-14 13:01:16,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:01:16,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:01:16,763 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:01:16,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-14 13:01:16,764 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:01:16,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:01:16,764 INFO L85 PathProgramCache]: Analyzing trace with hash 522403298, now seen corresponding path program 3 times [2024-06-14 13:01:16,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:01:16,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301321986] [2024-06-14 13:01:16,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:01:16,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:01:16,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:01:17,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:01:17,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:01:17,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301321986] [2024-06-14 13:01:17,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301321986] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:01:17,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:01:17,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:01:17,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576368067] [2024-06-14 13:01:17,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:01:17,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:01:17,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:01:17,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:01:17,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:01:17,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:01:17,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 211 transitions, 2498 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:01:17,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:01:17,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:01:17,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:01:18,346 INFO L124 PetriNetUnfolderBase]: 2337/3504 cut-off events. [2024-06-14 13:01:18,346 INFO L125 PetriNetUnfolderBase]: For 148096/148098 co-relation queries the response was YES. [2024-06-14 13:01:18,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25355 conditions, 3504 events. 2337/3504 cut-off events. For 148096/148098 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 16930 event pairs, 617 based on Foata normal form. 6/3508 useless extension candidates. Maximal degree in co-relation 25268. Up to 3422 conditions per place. [2024-06-14 13:01:18,373 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 217 selfloop transitions, 15 changer transitions 0/235 dead transitions. [2024-06-14 13:01:18,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 235 transitions, 3050 flow [2024-06-14 13:01:18,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:01:18,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:01:18,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 112 transitions. [2024-06-14 13:01:18,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3902439024390244 [2024-06-14 13:01:18,375 INFO L175 Difference]: Start difference. First operand has 176 places, 211 transitions, 2498 flow. Second operand 7 states and 112 transitions. [2024-06-14 13:01:18,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 235 transitions, 3050 flow [2024-06-14 13:01:18,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 235 transitions, 2942 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-14 13:01:18,557 INFO L231 Difference]: Finished difference. Result has 177 places, 213 transitions, 2459 flow [2024-06-14 13:01:18,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2390, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2459, PETRI_PLACES=177, PETRI_TRANSITIONS=213} [2024-06-14 13:01:18,558 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 135 predicate places. [2024-06-14 13:01:18,558 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 213 transitions, 2459 flow [2024-06-14 13:01:18,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:01:18,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:01:18,559 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:01:18,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-14 13:01:18,559 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:01:18,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:01:18,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1215975634, now seen corresponding path program 7 times [2024-06-14 13:01:18,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:01:18,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303553513] [2024-06-14 13:01:18,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:01:18,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:01:18,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:01:19,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:01:19,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:01:19,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303553513] [2024-06-14 13:01:19,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303553513] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:01:19,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:01:19,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:01:19,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697369650] [2024-06-14 13:01:19,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:01:19,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:01:19,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:01:19,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:01:19,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:01:19,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:01:19,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 213 transitions, 2459 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:01:19,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:01:19,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:01:19,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:01:20,368 INFO L124 PetriNetUnfolderBase]: 2359/3536 cut-off events. [2024-06-14 13:01:20,369 INFO L125 PetriNetUnfolderBase]: For 156255/156257 co-relation queries the response was YES. [2024-06-14 13:01:20,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25757 conditions, 3536 events. 2359/3536 cut-off events. For 156255/156257 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 17038 event pairs, 619 based on Foata normal form. 4/3538 useless extension candidates. Maximal degree in co-relation 25669. Up to 3239 conditions per place. [2024-06-14 13:01:20,402 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 210 selfloop transitions, 48 changer transitions 0/261 dead transitions. [2024-06-14 13:01:20,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 261 transitions, 3311 flow [2024-06-14 13:01:20,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:01:20,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:01:20,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-14 13:01:20,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43902439024390244 [2024-06-14 13:01:20,403 INFO L175 Difference]: Start difference. First operand has 177 places, 213 transitions, 2459 flow. Second operand 9 states and 162 transitions. [2024-06-14 13:01:20,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 261 transitions, 3311 flow [2024-06-14 13:01:20,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 261 transitions, 3260 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-14 13:01:20,633 INFO L231 Difference]: Finished difference. Result has 182 places, 217 transitions, 2604 flow [2024-06-14 13:01:20,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2408, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2604, PETRI_PLACES=182, PETRI_TRANSITIONS=217} [2024-06-14 13:01:20,634 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 140 predicate places. [2024-06-14 13:01:20,634 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 217 transitions, 2604 flow [2024-06-14 13:01:20,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:01:20,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:01:20,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:01:20,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-14 13:01:20,634 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:01:20,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:01:20,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1452335568, now seen corresponding path program 4 times [2024-06-14 13:01:20,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:01:20,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662021294] [2024-06-14 13:01:20,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:01:20,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:01:20,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:01:21,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:01:21,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:01:21,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662021294] [2024-06-14 13:01:21,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662021294] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:01:21,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:01:21,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:01:21,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085962002] [2024-06-14 13:01:21,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:01:21,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:01:21,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:01:21,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:01:21,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:01:21,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:01:21,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 217 transitions, 2604 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:01:21,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:01:21,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:01:21,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:01:22,464 INFO L124 PetriNetUnfolderBase]: 2351/3524 cut-off events. [2024-06-14 13:01:22,465 INFO L125 PetriNetUnfolderBase]: For 161768/161770 co-relation queries the response was YES. [2024-06-14 13:01:22,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26027 conditions, 3524 events. 2351/3524 cut-off events. For 161768/161770 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 16973 event pairs, 635 based on Foata normal form. 6/3528 useless extension candidates. Maximal degree in co-relation 25937. Up to 3433 conditions per place. [2024-06-14 13:01:22,500 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 219 selfloop transitions, 19 changer transitions 0/241 dead transitions. [2024-06-14 13:01:22,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 241 transitions, 3174 flow [2024-06-14 13:01:22,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:01:22,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:01:22,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 113 transitions. [2024-06-14 13:01:22,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39372822299651566 [2024-06-14 13:01:22,502 INFO L175 Difference]: Start difference. First operand has 182 places, 217 transitions, 2604 flow. Second operand 7 states and 113 transitions. [2024-06-14 13:01:22,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 241 transitions, 3174 flow [2024-06-14 13:01:22,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 241 transitions, 2990 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-14 13:01:22,749 INFO L231 Difference]: Finished difference. Result has 181 places, 219 transitions, 2502 flow [2024-06-14 13:01:22,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2420, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2502, PETRI_PLACES=181, PETRI_TRANSITIONS=219} [2024-06-14 13:01:22,751 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 139 predicate places. [2024-06-14 13:01:22,751 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 219 transitions, 2502 flow [2024-06-14 13:01:22,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:01:22,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:01:22,751 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:01:22,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-14 13:01:22,751 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:01:22,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:01:22,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1444054414, now seen corresponding path program 8 times [2024-06-14 13:01:22,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:01:22,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354086906] [2024-06-14 13:01:22,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:01:22,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:01:22,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:01:23,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:01:23,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:01:23,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354086906] [2024-06-14 13:01:23,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354086906] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:01:23,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:01:23,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:01:23,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409943620] [2024-06-14 13:01:23,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:01:23,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:01:23,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:01:23,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:01:23,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:01:23,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:01:23,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 219 transitions, 2502 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:01:23,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:01:23,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:01:23,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:01:24,458 INFO L124 PetriNetUnfolderBase]: 2341/3510 cut-off events. [2024-06-14 13:01:24,459 INFO L125 PetriNetUnfolderBase]: For 166230/166232 co-relation queries the response was YES. [2024-06-14 13:01:24,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25586 conditions, 3510 events. 2341/3510 cut-off events. For 166230/166232 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 16923 event pairs, 628 based on Foata normal form. 6/3514 useless extension candidates. Maximal degree in co-relation 25496. Up to 3414 conditions per place. [2024-06-14 13:01:24,490 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 226 selfloop transitions, 18 changer transitions 0/247 dead transitions. [2024-06-14 13:01:24,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 247 transitions, 3086 flow [2024-06-14 13:01:24,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:01:24,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:01:24,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 128 transitions. [2024-06-14 13:01:24,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3902439024390244 [2024-06-14 13:01:24,492 INFO L175 Difference]: Start difference. First operand has 181 places, 219 transitions, 2502 flow. Second operand 8 states and 128 transitions. [2024-06-14 13:01:24,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 247 transitions, 3086 flow [2024-06-14 13:01:24,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 247 transitions, 2982 flow, removed 35 selfloop flow, removed 5 redundant places. [2024-06-14 13:01:24,726 INFO L231 Difference]: Finished difference. Result has 184 places, 220 transitions, 2462 flow [2024-06-14 13:01:24,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2408, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2462, PETRI_PLACES=184, PETRI_TRANSITIONS=220} [2024-06-14 13:01:24,727 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 142 predicate places. [2024-06-14 13:01:24,727 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 220 transitions, 2462 flow [2024-06-14 13:01:24,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:01:24,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:01:24,727 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:01:24,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-14 13:01:24,728 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:01:24,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:01:24,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1452335320, now seen corresponding path program 1 times [2024-06-14 13:01:24,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:01:24,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656536666] [2024-06-14 13:01:24,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:01:24,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:01:24,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:01:25,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:01:25,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:01:25,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656536666] [2024-06-14 13:01:25,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656536666] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:01:25,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:01:25,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:01:25,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708250243] [2024-06-14 13:01:25,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:01:25,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:01:25,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:01:25,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:01:25,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:01:25,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:01:25,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 220 transitions, 2462 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:01:25,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:01:25,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:01:25,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:01:26,498 INFO L124 PetriNetUnfolderBase]: 2336/3503 cut-off events. [2024-06-14 13:01:26,498 INFO L125 PetriNetUnfolderBase]: For 170862/170864 co-relation queries the response was YES. [2024-06-14 13:01:26,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25504 conditions, 3503 events. 2336/3503 cut-off events. For 170862/170864 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 16914 event pairs, 617 based on Foata normal form. 4/3505 useless extension candidates. Maximal degree in co-relation 25413. Up to 3403 conditions per place. [2024-06-14 13:01:26,532 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 219 selfloop transitions, 23 changer transitions 0/245 dead transitions. [2024-06-14 13:01:26,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 245 transitions, 3052 flow [2024-06-14 13:01:26,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:01:26,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:01:26,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 114 transitions. [2024-06-14 13:01:26,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.397212543554007 [2024-06-14 13:01:26,534 INFO L175 Difference]: Start difference. First operand has 184 places, 220 transitions, 2462 flow. Second operand 7 states and 114 transitions. [2024-06-14 13:01:26,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 245 transitions, 3052 flow [2024-06-14 13:01:26,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 245 transitions, 2998 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-14 13:01:26,775 INFO L231 Difference]: Finished difference. Result has 185 places, 223 transitions, 2514 flow [2024-06-14 13:01:26,776 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2408, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2514, PETRI_PLACES=185, PETRI_TRANSITIONS=223} [2024-06-14 13:01:26,776 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 143 predicate places. [2024-06-14 13:01:26,776 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 223 transitions, 2514 flow [2024-06-14 13:01:26,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:01:26,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:01:26,776 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:01:26,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-14 13:01:26,777 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:01:26,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:01:26,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1197765146, now seen corresponding path program 1 times [2024-06-14 13:01:26,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:01:26,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777282270] [2024-06-14 13:01:26,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:01:26,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:01:26,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:01:27,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:01:27,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:01:27,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777282270] [2024-06-14 13:01:27,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777282270] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:01:27,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:01:27,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:01:27,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783105014] [2024-06-14 13:01:27,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:01:27,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:01:27,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:01:27,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:01:27,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:01:27,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:01:27,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 223 transitions, 2514 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:01:27,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:01:27,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:01:27,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:01:28,722 INFO L124 PetriNetUnfolderBase]: 2455/3704 cut-off events. [2024-06-14 13:01:28,723 INFO L125 PetriNetUnfolderBase]: For 182226/182228 co-relation queries the response was YES. [2024-06-14 13:01:28,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26917 conditions, 3704 events. 2455/3704 cut-off events. For 182226/182228 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 18236 event pairs, 400 based on Foata normal form. 16/3718 useless extension candidates. Maximal degree in co-relation 26825. Up to 2642 conditions per place. [2024-06-14 13:01:28,758 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 195 selfloop transitions, 94 changer transitions 0/292 dead transitions. [2024-06-14 13:01:28,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 292 transitions, 3735 flow [2024-06-14 13:01:28,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:01:28,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:01:28,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-06-14 13:01:28,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44878048780487806 [2024-06-14 13:01:28,760 INFO L175 Difference]: Start difference. First operand has 185 places, 223 transitions, 2514 flow. Second operand 10 states and 184 transitions. [2024-06-14 13:01:28,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 292 transitions, 3735 flow [2024-06-14 13:01:29,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 292 transitions, 3671 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-14 13:01:29,139 INFO L231 Difference]: Finished difference. Result has 193 places, 231 transitions, 2861 flow [2024-06-14 13:01:29,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2450, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2861, PETRI_PLACES=193, PETRI_TRANSITIONS=231} [2024-06-14 13:01:29,140 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 151 predicate places. [2024-06-14 13:01:29,140 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 231 transitions, 2861 flow [2024-06-14 13:01:29,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:01:29,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:01:29,143 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:01:29,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-14 13:01:29,144 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:01:29,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:01:29,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1199639096, now seen corresponding path program 2 times [2024-06-14 13:01:29,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:01:29,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425953026] [2024-06-14 13:01:29,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:01:29,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:01:29,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:01:30,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:01:30,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:01:30,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425953026] [2024-06-14 13:01:30,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425953026] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:01:30,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:01:30,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:01:30,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648856168] [2024-06-14 13:01:30,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:01:30,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:01:30,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:01:30,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:01:30,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:01:30,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:01:30,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 231 transitions, 2861 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:01:30,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:01:30,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:01:30,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:01:31,107 INFO L124 PetriNetUnfolderBase]: 2674/4058 cut-off events. [2024-06-14 13:01:31,107 INFO L125 PetriNetUnfolderBase]: For 210780/210782 co-relation queries the response was YES. [2024-06-14 13:01:31,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30765 conditions, 4058 events. 2674/4058 cut-off events. For 210780/210782 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 20769 event pairs, 595 based on Foata normal form. 16/4072 useless extension candidates. Maximal degree in co-relation 30669. Up to 3212 conditions per place. [2024-06-14 13:01:31,150 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 197 selfloop transitions, 98 changer transitions 0/298 dead transitions. [2024-06-14 13:01:31,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 298 transitions, 4072 flow [2024-06-14 13:01:31,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:01:31,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:01:31,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-06-14 13:01:31,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45121951219512196 [2024-06-14 13:01:31,152 INFO L175 Difference]: Start difference. First operand has 193 places, 231 transitions, 2861 flow. Second operand 10 states and 185 transitions. [2024-06-14 13:01:31,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 298 transitions, 4072 flow [2024-06-14 13:01:31,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 298 transitions, 3944 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-06-14 13:01:31,475 INFO L231 Difference]: Finished difference. Result has 199 places, 239 transitions, 3051 flow [2024-06-14 13:01:31,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2737, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3051, PETRI_PLACES=199, PETRI_TRANSITIONS=239} [2024-06-14 13:01:31,475 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 157 predicate places. [2024-06-14 13:01:31,475 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 239 transitions, 3051 flow [2024-06-14 13:01:31,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:01:31,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:01:31,476 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:01:31,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-14 13:01:31,476 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:01:31,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:01:31,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1370821664, now seen corresponding path program 3 times [2024-06-14 13:01:31,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:01:31,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953264852] [2024-06-14 13:01:31,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:01:31,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:01:31,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:01:32,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:01:32,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:01:32,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953264852] [2024-06-14 13:01:32,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953264852] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:01:32,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:01:32,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:01:32,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306652680] [2024-06-14 13:01:32,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:01:32,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:01:32,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:01:32,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:01:32,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:01:32,589 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:01:32,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 239 transitions, 3051 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:01:32,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:01:32,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:01:32,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:01:33,411 INFO L124 PetriNetUnfolderBase]: 2638/4002 cut-off events. [2024-06-14 13:01:33,411 INFO L125 PetriNetUnfolderBase]: For 208509/208511 co-relation queries the response was YES. [2024-06-14 13:01:33,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30225 conditions, 4002 events. 2638/4002 cut-off events. For 208509/208511 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 20361 event pairs, 599 based on Foata normal form. 20/4020 useless extension candidates. Maximal degree in co-relation 30127. Up to 3312 conditions per place. [2024-06-14 13:01:33,452 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 193 selfloop transitions, 97 changer transitions 0/293 dead transitions. [2024-06-14 13:01:33,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 293 transitions, 3995 flow [2024-06-14 13:01:33,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:01:33,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:01:33,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 179 transitions. [2024-06-14 13:01:33,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43658536585365854 [2024-06-14 13:01:33,453 INFO L175 Difference]: Start difference. First operand has 199 places, 239 transitions, 3051 flow. Second operand 10 states and 179 transitions. [2024-06-14 13:01:33,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 293 transitions, 3995 flow [2024-06-14 13:01:33,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 293 transitions, 3854 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-14 13:01:33,704 INFO L231 Difference]: Finished difference. Result has 205 places, 241 transitions, 3157 flow [2024-06-14 13:01:33,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2918, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3157, PETRI_PLACES=205, PETRI_TRANSITIONS=241} [2024-06-14 13:01:33,705 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 163 predicate places. [2024-06-14 13:01:33,705 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 241 transitions, 3157 flow [2024-06-14 13:01:33,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:01:33,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:01:33,706 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:01:33,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-14 13:01:33,706 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:01:33,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:01:33,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1457657624, now seen corresponding path program 4 times [2024-06-14 13:01:33,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:01:33,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566347596] [2024-06-14 13:01:33,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:01:33,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:01:33,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:01:34,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:01:34,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:01:34,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566347596] [2024-06-14 13:01:34,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566347596] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:01:34,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:01:34,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:01:34,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305281321] [2024-06-14 13:01:34,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:01:34,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:01:34,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:01:34,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:01:34,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:01:34,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:01:34,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 241 transitions, 3157 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:01:34,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:01:34,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:01:34,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:01:35,783 INFO L124 PetriNetUnfolderBase]: 2735/4159 cut-off events. [2024-06-14 13:01:35,784 INFO L125 PetriNetUnfolderBase]: For 218351/218353 co-relation queries the response was YES. [2024-06-14 13:01:35,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31552 conditions, 4159 events. 2735/4159 cut-off events. For 218351/218353 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 21473 event pairs, 650 based on Foata normal form. 20/4177 useless extension candidates. Maximal degree in co-relation 31451. Up to 3705 conditions per place. [2024-06-14 13:01:35,829 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 228 selfloop transitions, 61 changer transitions 0/292 dead transitions. [2024-06-14 13:01:35,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 292 transitions, 3953 flow [2024-06-14 13:01:35,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:01:35,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:01:35,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-06-14 13:01:35,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4195121951219512 [2024-06-14 13:01:35,835 INFO L175 Difference]: Start difference. First operand has 205 places, 241 transitions, 3157 flow. Second operand 10 states and 172 transitions. [2024-06-14 13:01:35,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 292 transitions, 3953 flow [2024-06-14 13:01:36,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 292 transitions, 3758 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-14 13:01:36,225 INFO L231 Difference]: Finished difference. Result has 209 places, 245 transitions, 3163 flow [2024-06-14 13:01:36,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2968, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3163, PETRI_PLACES=209, PETRI_TRANSITIONS=245} [2024-06-14 13:01:36,226 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 167 predicate places. [2024-06-14 13:01:36,226 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 245 transitions, 3163 flow [2024-06-14 13:01:36,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:01:36,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:01:36,226 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:01:36,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-14 13:01:36,226 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:01:36,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:01:36,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1457663576, now seen corresponding path program 1 times [2024-06-14 13:01:36,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:01:36,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591098360] [2024-06-14 13:01:36,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:01:36,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:01:36,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:01:37,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:01:37,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:01:37,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591098360] [2024-06-14 13:01:37,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591098360] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:01:37,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:01:37,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:01:37,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500417162] [2024-06-14 13:01:37,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:01:37,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:01:37,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:01:37,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:01:37,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:01:37,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:01:37,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 245 transitions, 3163 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:01:37,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:01:37,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:01:37,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:01:38,426 INFO L124 PetriNetUnfolderBase]: 2752/4186 cut-off events. [2024-06-14 13:01:38,426 INFO L125 PetriNetUnfolderBase]: For 215888/215890 co-relation queries the response was YES. [2024-06-14 13:01:38,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31818 conditions, 4186 events. 2752/4186 cut-off events. For 215888/215890 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 21705 event pairs, 633 based on Foata normal form. 4/4188 useless extension candidates. Maximal degree in co-relation 31715. Up to 3884 conditions per place. [2024-06-14 13:01:38,461 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 231 selfloop transitions, 51 changer transitions 0/285 dead transitions. [2024-06-14 13:01:38,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 285 transitions, 3867 flow [2024-06-14 13:01:38,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:01:38,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:01:38,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-14 13:01:38,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4146341463414634 [2024-06-14 13:01:38,463 INFO L175 Difference]: Start difference. First operand has 209 places, 245 transitions, 3163 flow. Second operand 9 states and 153 transitions. [2024-06-14 13:01:38,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 285 transitions, 3867 flow [2024-06-14 13:01:38,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 285 transitions, 3742 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-14 13:01:38,785 INFO L231 Difference]: Finished difference. Result has 211 places, 247 transitions, 3185 flow [2024-06-14 13:01:38,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3038, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3185, PETRI_PLACES=211, PETRI_TRANSITIONS=247} [2024-06-14 13:01:38,785 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 169 predicate places. [2024-06-14 13:01:38,785 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 247 transitions, 3185 flow [2024-06-14 13:01:38,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:01:38,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:01:38,786 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:01:38,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-14 13:01:38,786 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:01:38,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:01:38,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1457513474, now seen corresponding path program 5 times [2024-06-14 13:01:38,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:01:38,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478890182] [2024-06-14 13:01:38,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:01:38,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:01:38,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:01:39,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:01:39,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:01:39,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478890182] [2024-06-14 13:01:39,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478890182] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:01:39,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:01:39,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:01:39,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722698213] [2024-06-14 13:01:39,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:01:39,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:01:39,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:01:39,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:01:39,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:01:40,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:01:40,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 247 transitions, 3185 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:01:40,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:01:40,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:01:40,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:01:41,230 INFO L124 PetriNetUnfolderBase]: 2827/4311 cut-off events. [2024-06-14 13:01:41,230 INFO L125 PetriNetUnfolderBase]: For 239670/239672 co-relation queries the response was YES. [2024-06-14 13:01:41,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32710 conditions, 4311 events. 2827/4311 cut-off events. For 239670/239672 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 22512 event pairs, 654 based on Foata normal form. 20/4329 useless extension candidates. Maximal degree in co-relation 32606. Up to 3830 conditions per place. [2024-06-14 13:01:41,275 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 227 selfloop transitions, 66 changer transitions 0/296 dead transitions. [2024-06-14 13:01:41,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 296 transitions, 3960 flow [2024-06-14 13:01:41,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:01:41,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:01:41,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-06-14 13:01:41,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4268292682926829 [2024-06-14 13:01:41,277 INFO L175 Difference]: Start difference. First operand has 211 places, 247 transitions, 3185 flow. Second operand 10 states and 175 transitions. [2024-06-14 13:01:41,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 296 transitions, 3960 flow [2024-06-14 13:01:41,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 296 transitions, 3831 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-14 13:01:41,710 INFO L231 Difference]: Finished difference. Result has 214 places, 248 transitions, 3224 flow [2024-06-14 13:01:41,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3056, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3224, PETRI_PLACES=214, PETRI_TRANSITIONS=248} [2024-06-14 13:01:41,710 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 172 predicate places. [2024-06-14 13:01:41,710 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 248 transitions, 3224 flow [2024-06-14 13:01:41,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:01:41,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:01:41,711 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:01:41,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-14 13:01:41,711 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:01:41,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:01:41,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1286330906, now seen corresponding path program 6 times [2024-06-14 13:01:41,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:01:41,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483212406] [2024-06-14 13:01:41,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:01:41,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:01:41,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:01:42,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:01:42,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:01:42,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483212406] [2024-06-14 13:01:42,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483212406] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:01:42,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:01:42,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:01:42,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142971558] [2024-06-14 13:01:42,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:01:42,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:01:42,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:01:42,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:01:42,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:01:42,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:01:42,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 248 transitions, 3224 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:01:42,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:01:42,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:01:42,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:01:43,849 INFO L124 PetriNetUnfolderBase]: 2946/4512 cut-off events. [2024-06-14 13:01:43,849 INFO L125 PetriNetUnfolderBase]: For 260358/260360 co-relation queries the response was YES. [2024-06-14 13:01:43,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34538 conditions, 4512 events. 2946/4512 cut-off events. For 260358/260360 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 23966 event pairs, 681 based on Foata normal form. 16/4526 useless extension candidates. Maximal degree in co-relation 34433. Up to 3715 conditions per place. [2024-06-14 13:01:43,898 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 239 selfloop transitions, 63 changer transitions 0/305 dead transitions. [2024-06-14 13:01:43,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 305 transitions, 4276 flow [2024-06-14 13:01:43,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:01:43,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:01:43,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 179 transitions. [2024-06-14 13:01:43,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43658536585365854 [2024-06-14 13:01:43,900 INFO L175 Difference]: Start difference. First operand has 214 places, 248 transitions, 3224 flow. Second operand 10 states and 179 transitions. [2024-06-14 13:01:43,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 305 transitions, 4276 flow [2024-06-14 13:01:44,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 305 transitions, 4119 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-14 13:01:44,303 INFO L231 Difference]: Finished difference. Result has 216 places, 252 transitions, 3307 flow [2024-06-14 13:01:44,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3067, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3307, PETRI_PLACES=216, PETRI_TRANSITIONS=252} [2024-06-14 13:01:44,304 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 174 predicate places. [2024-06-14 13:01:44,304 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 252 transitions, 3307 flow [2024-06-14 13:01:44,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:01:44,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:01:44,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:01:44,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-14 13:01:44,304 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:01:44,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:01:44,305 INFO L85 PathProgramCache]: Analyzing trace with hash 736568728, now seen corresponding path program 7 times [2024-06-14 13:01:44,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:01:44,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392907266] [2024-06-14 13:01:44,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:01:44,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:01:44,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:01:45,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:01:45,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:01:45,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392907266] [2024-06-14 13:01:45,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392907266] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:01:45,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:01:45,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:01:45,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382995619] [2024-06-14 13:01:45,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:01:45,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:01:45,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:01:45,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:01:45,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:01:45,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:01:45,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 252 transitions, 3307 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:01:45,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:01:45,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:01:45,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:01:46,571 INFO L124 PetriNetUnfolderBase]: 3201/4933 cut-off events. [2024-06-14 13:01:46,572 INFO L125 PetriNetUnfolderBase]: For 310460/310462 co-relation queries the response was YES. [2024-06-14 13:01:46,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38734 conditions, 4933 events. 3201/4933 cut-off events. For 310460/310462 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 27034 event pairs, 800 based on Foata normal form. 16/4947 useless extension candidates. Maximal degree in co-relation 38629. Up to 4257 conditions per place. [2024-06-14 13:01:46,628 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 258 selfloop transitions, 46 changer transitions 0/307 dead transitions. [2024-06-14 13:01:46,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 307 transitions, 4381 flow [2024-06-14 13:01:46,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:01:46,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:01:46,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-06-14 13:01:46,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4268292682926829 [2024-06-14 13:01:46,630 INFO L175 Difference]: Start difference. First operand has 216 places, 252 transitions, 3307 flow. Second operand 10 states and 175 transitions. [2024-06-14 13:01:46,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 307 transitions, 4381 flow [2024-06-14 13:01:47,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 307 transitions, 4294 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-14 13:01:47,176 INFO L231 Difference]: Finished difference. Result has 221 places, 256 transitions, 3434 flow [2024-06-14 13:01:47,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3220, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3434, PETRI_PLACES=221, PETRI_TRANSITIONS=256} [2024-06-14 13:01:47,177 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 179 predicate places. [2024-06-14 13:01:47,177 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 256 transitions, 3434 flow [2024-06-14 13:01:47,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:01:47,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:01:47,177 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:01:47,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-14 13:01:47,178 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:01:47,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:01:47,178 INFO L85 PathProgramCache]: Analyzing trace with hash 742286740, now seen corresponding path program 2 times [2024-06-14 13:01:47,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:01:47,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566459375] [2024-06-14 13:01:47,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:01:47,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:01:47,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:01:48,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:01:48,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:01:48,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566459375] [2024-06-14 13:01:48,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566459375] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:01:48,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:01:48,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:01:48,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711392845] [2024-06-14 13:01:48,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:01:48,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:01:48,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:01:48,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:01:48,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:01:48,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:01:48,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 256 transitions, 3434 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:01:48,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:01:48,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:01:48,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:01:49,487 INFO L124 PetriNetUnfolderBase]: 3218/4960 cut-off events. [2024-06-14 13:01:49,488 INFO L125 PetriNetUnfolderBase]: For 312545/312547 co-relation queries the response was YES. [2024-06-14 13:01:49,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39453 conditions, 4960 events. 3218/4960 cut-off events. For 312545/312547 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 27233 event pairs, 827 based on Foata normal form. 4/4962 useless extension candidates. Maximal degree in co-relation 39345. Up to 4773 conditions per place. [2024-06-14 13:01:49,537 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 264 selfloop transitions, 35 changer transitions 0/302 dead transitions. [2024-06-14 13:01:49,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 302 transitions, 4197 flow [2024-06-14 13:01:49,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 13:01:49,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 13:01:49,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 177 transitions. [2024-06-14 13:01:49,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3924611973392461 [2024-06-14 13:01:49,539 INFO L175 Difference]: Start difference. First operand has 221 places, 256 transitions, 3434 flow. Second operand 11 states and 177 transitions. [2024-06-14 13:01:49,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 302 transitions, 4197 flow [2024-06-14 13:01:50,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 302 transitions, 4119 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-14 13:01:50,247 INFO L231 Difference]: Finished difference. Result has 226 places, 258 transitions, 3480 flow [2024-06-14 13:01:50,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3358, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3480, PETRI_PLACES=226, PETRI_TRANSITIONS=258} [2024-06-14 13:01:50,248 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 184 predicate places. [2024-06-14 13:01:50,248 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 258 transitions, 3480 flow [2024-06-14 13:01:50,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:01:50,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:01:50,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:01:50,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-14 13:01:50,248 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:01:50,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:01:50,249 INFO L85 PathProgramCache]: Analyzing trace with hash 742078978, now seen corresponding path program 8 times [2024-06-14 13:01:50,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:01:50,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734782643] [2024-06-14 13:01:50,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:01:50,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:01:50,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:01:51,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:01:51,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:01:51,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734782643] [2024-06-14 13:01:51,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734782643] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:01:51,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:01:51,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:01:51,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498748084] [2024-06-14 13:01:51,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:01:51,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:01:51,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:01:51,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:01:51,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:01:51,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:01:51,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 258 transitions, 3480 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:01:51,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:01:51,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:01:51,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:01:52,657 INFO L124 PetriNetUnfolderBase]: 3293/5085 cut-off events. [2024-06-14 13:01:52,658 INFO L125 PetriNetUnfolderBase]: For 340821/340823 co-relation queries the response was YES. [2024-06-14 13:01:52,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40466 conditions, 5085 events. 3293/5085 cut-off events. For 340821/340823 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 28145 event pairs, 846 based on Foata normal form. 20/5103 useless extension candidates. Maximal degree in co-relation 40356. Up to 4755 conditions per place. [2024-06-14 13:01:52,722 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 267 selfloop transitions, 42 changer transitions 0/312 dead transitions. [2024-06-14 13:01:52,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 312 transitions, 4302 flow [2024-06-14 13:01:52,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 13:01:52,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 13:01:52,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 196 transitions. [2024-06-14 13:01:52,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3983739837398374 [2024-06-14 13:01:52,724 INFO L175 Difference]: Start difference. First operand has 226 places, 258 transitions, 3480 flow. Second operand 12 states and 196 transitions. [2024-06-14 13:01:52,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 312 transitions, 4302 flow [2024-06-14 13:01:53,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 312 transitions, 4201 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-14 13:01:53,372 INFO L231 Difference]: Finished difference. Result has 229 places, 259 transitions, 3502 flow [2024-06-14 13:01:53,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3379, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3502, PETRI_PLACES=229, PETRI_TRANSITIONS=259} [2024-06-14 13:01:53,372 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 187 predicate places. [2024-06-14 13:01:53,372 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 259 transitions, 3502 flow [2024-06-14 13:01:53,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:01:53,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:01:53,373 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:01:53,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-14 13:01:53,373 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:01:53,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:01:53,373 INFO L85 PathProgramCache]: Analyzing trace with hash 571115332, now seen corresponding path program 3 times [2024-06-14 13:01:53,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:01:53,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100334117] [2024-06-14 13:01:53,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:01:53,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:01:53,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:01:54,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:01:54,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:01:54,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100334117] [2024-06-14 13:01:54,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100334117] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:01:54,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:01:54,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:01:54,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532790733] [2024-06-14 13:01:54,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:01:54,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:01:54,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:01:54,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:01:54,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:01:54,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:01:54,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 259 transitions, 3502 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:01:54,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:01:54,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:01:54,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:01:55,840 INFO L124 PetriNetUnfolderBase]: 3310/5112 cut-off events. [2024-06-14 13:01:55,840 INFO L125 PetriNetUnfolderBase]: For 338467/338469 co-relation queries the response was YES. [2024-06-14 13:01:55,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40912 conditions, 5112 events. 3310/5112 cut-off events. For 338467/338469 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 28368 event pairs, 830 based on Foata normal form. 4/5114 useless extension candidates. Maximal degree in co-relation 40801. Up to 4860 conditions per place. [2024-06-14 13:01:55,887 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 265 selfloop transitions, 41 changer transitions 0/309 dead transitions. [2024-06-14 13:01:55,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 309 transitions, 4515 flow [2024-06-14 13:01:55,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 13:01:55,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 13:01:55,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 179 transitions. [2024-06-14 13:01:55,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3968957871396896 [2024-06-14 13:01:55,889 INFO L175 Difference]: Start difference. First operand has 229 places, 259 transitions, 3502 flow. Second operand 11 states and 179 transitions. [2024-06-14 13:01:55,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 309 transitions, 4515 flow [2024-06-14 13:01:56,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 309 transitions, 4422 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-14 13:01:56,424 INFO L231 Difference]: Finished difference. Result has 231 places, 263 transitions, 3602 flow [2024-06-14 13:01:56,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3409, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3602, PETRI_PLACES=231, PETRI_TRANSITIONS=263} [2024-06-14 13:01:56,425 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 189 predicate places. [2024-06-14 13:01:56,425 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 263 transitions, 3602 flow [2024-06-14 13:01:56,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:01:56,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:01:56,425 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:01:56,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-14 13:01:56,426 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:01:56,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:01:56,426 INFO L85 PathProgramCache]: Analyzing trace with hash 565543702, now seen corresponding path program 4 times [2024-06-14 13:01:56,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:01:56,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056451591] [2024-06-14 13:01:56,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:01:56,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:01:56,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:01:57,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:01:57,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:01:57,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056451591] [2024-06-14 13:01:57,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056451591] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:01:57,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:01:57,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:01:57,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826479653] [2024-06-14 13:01:57,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:01:57,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:01:57,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:01:57,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:01:57,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:01:57,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:01:57,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 263 transitions, 3602 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:01:57,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:01:57,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:01:57,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:01:58,817 INFO L124 PetriNetUnfolderBase]: 3302/5100 cut-off events. [2024-06-14 13:01:58,818 INFO L125 PetriNetUnfolderBase]: For 346098/346100 co-relation queries the response was YES. [2024-06-14 13:01:58,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40985 conditions, 5100 events. 3302/5100 cut-off events. For 346098/346100 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 28255 event pairs, 836 based on Foata normal form. 4/5102 useless extension candidates. Maximal degree in co-relation 40872. Up to 4913 conditions per place. [2024-06-14 13:01:58,879 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 262 selfloop transitions, 34 changer transitions 0/299 dead transitions. [2024-06-14 13:01:58,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 299 transitions, 4296 flow [2024-06-14 13:01:58,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:01:58,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:01:58,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 151 transitions. [2024-06-14 13:01:58,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4092140921409214 [2024-06-14 13:01:58,881 INFO L175 Difference]: Start difference. First operand has 231 places, 263 transitions, 3602 flow. Second operand 9 states and 151 transitions. [2024-06-14 13:01:58,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 299 transitions, 4296 flow [2024-06-14 13:01:59,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 299 transitions, 4182 flow, removed 36 selfloop flow, removed 7 redundant places. [2024-06-14 13:01:59,600 INFO L231 Difference]: Finished difference. Result has 233 places, 263 transitions, 3563 flow [2024-06-14 13:01:59,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3488, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3563, PETRI_PLACES=233, PETRI_TRANSITIONS=263} [2024-06-14 13:01:59,601 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 191 predicate places. [2024-06-14 13:01:59,601 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 263 transitions, 3563 flow [2024-06-14 13:01:59,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:01:59,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:01:59,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:01:59,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-14 13:01:59,602 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:01:59,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:01:59,602 INFO L85 PathProgramCache]: Analyzing trace with hash 565393600, now seen corresponding path program 9 times [2024-06-14 13:01:59,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:01:59,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585349059] [2024-06-14 13:01:59,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:01:59,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:01:59,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:02:00,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:02:00,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:02:00,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585349059] [2024-06-14 13:02:00,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585349059] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:02:00,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:02:00,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:02:00,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800179789] [2024-06-14 13:02:00,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:02:00,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:02:00,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:02:00,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:02:00,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:02:00,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:02:00,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 263 transitions, 3563 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:02:00,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:02:00,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:02:00,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:02:01,968 INFO L124 PetriNetUnfolderBase]: 3307/5115 cut-off events. [2024-06-14 13:02:01,968 INFO L125 PetriNetUnfolderBase]: For 368877/368879 co-relation queries the response was YES. [2024-06-14 13:02:02,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40264 conditions, 5115 events. 3307/5115 cut-off events. For 368877/368879 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 28404 event pairs, 833 based on Foata normal form. 32/5145 useless extension candidates. Maximal degree in co-relation 40149. Up to 4651 conditions per place. [2024-06-14 13:02:02,027 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 265 selfloop transitions, 47 changer transitions 0/315 dead transitions. [2024-06-14 13:02:02,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 315 transitions, 4418 flow [2024-06-14 13:02:02,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 13:02:02,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 13:02:02,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 186 transitions. [2024-06-14 13:02:02,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4124168514412417 [2024-06-14 13:02:02,028 INFO L175 Difference]: Start difference. First operand has 233 places, 263 transitions, 3563 flow. Second operand 11 states and 186 transitions. [2024-06-14 13:02:02,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 315 transitions, 4418 flow [2024-06-14 13:02:03,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 315 transitions, 4338 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-14 13:02:03,082 INFO L231 Difference]: Finished difference. Result has 236 places, 265 transitions, 3656 flow [2024-06-14 13:02:03,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3483, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3656, PETRI_PLACES=236, PETRI_TRANSITIONS=265} [2024-06-14 13:02:03,084 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 194 predicate places. [2024-06-14 13:02:03,084 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 265 transitions, 3656 flow [2024-06-14 13:02:03,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:02:03,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:02:03,084 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:02:03,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-14 13:02:03,084 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:02:03,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:02:03,085 INFO L85 PathProgramCache]: Analyzing trace with hash -520278762, now seen corresponding path program 1 times [2024-06-14 13:02:03,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:02:03,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696619258] [2024-06-14 13:02:03,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:02:03,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:02:03,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:02:04,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:02:04,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:02:04,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696619258] [2024-06-14 13:02:04,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696619258] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:02:04,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:02:04,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:02:04,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757241957] [2024-06-14 13:02:04,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:02:04,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:02:04,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:02:04,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:02:04,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:02:04,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-14 13:02:04,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 265 transitions, 3656 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:02:04,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:02:04,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-14 13:02:04,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:02:05,181 INFO L124 PetriNetUnfolderBase]: 3253/5058 cut-off events. [2024-06-14 13:02:05,181 INFO L125 PetriNetUnfolderBase]: For 352030/352030 co-relation queries the response was YES. [2024-06-14 13:02:05,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40454 conditions, 5058 events. 3253/5058 cut-off events. For 352030/352030 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 28362 event pairs, 865 based on Foata normal form. 6/5031 useless extension candidates. Maximal degree in co-relation 40338. Up to 4844 conditions per place. [2024-06-14 13:02:05,239 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 234 selfloop transitions, 49 changer transitions 0/301 dead transitions. [2024-06-14 13:02:05,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 301 transitions, 4545 flow [2024-06-14 13:02:05,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:02:05,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:02:05,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 120 transitions. [2024-06-14 13:02:05,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4181184668989547 [2024-06-14 13:02:05,240 INFO L175 Difference]: Start difference. First operand has 236 places, 265 transitions, 3656 flow. Second operand 7 states and 120 transitions. [2024-06-14 13:02:05,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 301 transitions, 4545 flow [2024-06-14 13:02:05,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 301 transitions, 4424 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-06-14 13:02:05,983 INFO L231 Difference]: Finished difference. Result has 234 places, 281 transitions, 3837 flow [2024-06-14 13:02:05,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3537, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3837, PETRI_PLACES=234, PETRI_TRANSITIONS=281} [2024-06-14 13:02:05,984 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 192 predicate places. [2024-06-14 13:02:05,984 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 281 transitions, 3837 flow [2024-06-14 13:02:05,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:02:05,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:02:05,984 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:02:05,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-14 13:02:05,984 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:02:05,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:02:05,985 INFO L85 PathProgramCache]: Analyzing trace with hash 640699000, now seen corresponding path program 5 times [2024-06-14 13:02:05,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:02:05,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736622620] [2024-06-14 13:02:05,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:02:05,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:02:05,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:02:07,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:02:07,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:02:07,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736622620] [2024-06-14 13:02:07,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736622620] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:02:07,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:02:07,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:02:07,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770916316] [2024-06-14 13:02:07,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:02:07,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:02:07,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:02:07,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:02:07,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:02:07,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:02:07,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 281 transitions, 3837 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:02:07,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:02:07,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:02:07,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:02:08,329 INFO L124 PetriNetUnfolderBase]: 3369/5205 cut-off events. [2024-06-14 13:02:08,329 INFO L125 PetriNetUnfolderBase]: For 345843/345845 co-relation queries the response was YES. [2024-06-14 13:02:08,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40914 conditions, 5205 events. 3369/5205 cut-off events. For 345843/345845 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 28988 event pairs, 879 based on Foata normal form. 4/5207 useless extension candidates. Maximal degree in co-relation 40797. Up to 5007 conditions per place. [2024-06-14 13:02:08,389 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 280 selfloop transitions, 34 changer transitions 0/317 dead transitions. [2024-06-14 13:02:08,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 317 transitions, 4609 flow [2024-06-14 13:02:08,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:02:08,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:02:08,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-14 13:02:08,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42378048780487804 [2024-06-14 13:02:08,391 INFO L175 Difference]: Start difference. First operand has 234 places, 281 transitions, 3837 flow. Second operand 8 states and 139 transitions. [2024-06-14 13:02:08,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 317 transitions, 4609 flow [2024-06-14 13:02:09,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 317 transitions, 4524 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-06-14 13:02:09,067 INFO L231 Difference]: Finished difference. Result has 239 places, 283 transitions, 3879 flow [2024-06-14 13:02:09,068 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3752, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3879, PETRI_PLACES=239, PETRI_TRANSITIONS=283} [2024-06-14 13:02:09,068 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 197 predicate places. [2024-06-14 13:02:09,068 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 283 transitions, 3879 flow [2024-06-14 13:02:09,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:02:09,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:02:09,069 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:02:09,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-14 13:02:09,069 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:02:09,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:02:09,070 INFO L85 PathProgramCache]: Analyzing trace with hash 2081927112, now seen corresponding path program 6 times [2024-06-14 13:02:09,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:02:09,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139600826] [2024-06-14 13:02:09,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:02:09,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:02:09,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:02:10,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:02:10,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:02:10,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139600826] [2024-06-14 13:02:10,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139600826] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:02:10,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:02:10,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:02:10,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215547505] [2024-06-14 13:02:10,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:02:10,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:02:10,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:02:10,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:02:10,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:02:10,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:02:10,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 283 transitions, 3879 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:02:10,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:02:10,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:02:10,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:02:11,744 INFO L124 PetriNetUnfolderBase]: 3386/5232 cut-off events. [2024-06-14 13:02:11,745 INFO L125 PetriNetUnfolderBase]: For 359841/359843 co-relation queries the response was YES. [2024-06-14 13:02:11,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41488 conditions, 5232 events. 3386/5232 cut-off events. For 359841/359843 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 29126 event pairs, 885 based on Foata normal form. 6/5236 useless extension candidates. Maximal degree in co-relation 41370. Up to 5127 conditions per place. [2024-06-14 13:02:11,800 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 292 selfloop transitions, 17 changer transitions 0/312 dead transitions. [2024-06-14 13:02:11,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 312 transitions, 4621 flow [2024-06-14 13:02:11,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:02:11,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:02:11,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 126 transitions. [2024-06-14 13:02:11,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38414634146341464 [2024-06-14 13:02:11,802 INFO L175 Difference]: Start difference. First operand has 239 places, 283 transitions, 3879 flow. Second operand 8 states and 126 transitions. [2024-06-14 13:02:11,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 312 transitions, 4621 flow [2024-06-14 13:02:12,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 312 transitions, 4512 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-14 13:02:12,491 INFO L231 Difference]: Finished difference. Result has 241 places, 285 transitions, 3867 flow [2024-06-14 13:02:12,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3770, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3867, PETRI_PLACES=241, PETRI_TRANSITIONS=285} [2024-06-14 13:02:12,491 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 199 predicate places. [2024-06-14 13:02:12,492 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 285 transitions, 3867 flow [2024-06-14 13:02:12,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:02:12,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:02:12,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:02:12,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-14 13:02:12,492 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:02:12,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:02:12,493 INFO L85 PathProgramCache]: Analyzing trace with hash -953745962, now seen corresponding path program 7 times [2024-06-14 13:02:12,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:02:12,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456256467] [2024-06-14 13:02:12,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:02:12,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:02:12,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:02:13,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:02:13,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:02:13,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456256467] [2024-06-14 13:02:13,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456256467] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:02:13,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:02:13,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:02:13,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994019757] [2024-06-14 13:02:13,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:02:13,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:02:13,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:02:13,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:02:13,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:02:13,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:02:13,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 285 transitions, 3867 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:02:13,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:02:13,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:02:13,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:02:14,779 INFO L124 PetriNetUnfolderBase]: 3403/5259 cut-off events. [2024-06-14 13:02:14,780 INFO L125 PetriNetUnfolderBase]: For 373790/373792 co-relation queries the response was YES. [2024-06-14 13:02:14,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41842 conditions, 5259 events. 3403/5259 cut-off events. For 373790/373792 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 29392 event pairs, 884 based on Foata normal form. 4/5261 useless extension candidates. Maximal degree in co-relation 41723. Up to 5061 conditions per place. [2024-06-14 13:02:14,845 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 283 selfloop transitions, 32 changer transitions 0/318 dead transitions. [2024-06-14 13:02:14,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 318 transitions, 4641 flow [2024-06-14 13:02:14,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:02:14,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:02:14,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2024-06-14 13:02:14,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4146341463414634 [2024-06-14 13:02:14,846 INFO L175 Difference]: Start difference. First operand has 241 places, 285 transitions, 3867 flow. Second operand 8 states and 136 transitions. [2024-06-14 13:02:14,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 318 transitions, 4641 flow [2024-06-14 13:02:15,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 318 transitions, 4562 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-14 13:02:15,643 INFO L231 Difference]: Finished difference. Result has 243 places, 287 transitions, 3919 flow [2024-06-14 13:02:15,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3788, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3919, PETRI_PLACES=243, PETRI_TRANSITIONS=287} [2024-06-14 13:02:15,643 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 201 predicate places. [2024-06-14 13:02:15,643 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 287 transitions, 3919 flow [2024-06-14 13:02:15,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:02:15,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:02:15,644 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:02:15,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-14 13:02:15,644 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:02:15,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:02:15,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1823372232, now seen corresponding path program 8 times [2024-06-14 13:02:15,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:02:15,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564496729] [2024-06-14 13:02:15,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:02:15,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:02:15,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:02:16,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:02:16,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:02:16,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564496729] [2024-06-14 13:02:16,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564496729] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:02:16,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:02:16,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:02:16,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836262311] [2024-06-14 13:02:16,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:02:16,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:02:16,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:02:16,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:02:16,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:02:16,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:02:16,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 287 transitions, 3919 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:02:16,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:02:16,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:02:16,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:02:17,867 INFO L124 PetriNetUnfolderBase]: 3420/5286 cut-off events. [2024-06-14 13:02:17,868 INFO L125 PetriNetUnfolderBase]: For 388223/388225 co-relation queries the response was YES. [2024-06-14 13:02:17,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42391 conditions, 5286 events. 3420/5286 cut-off events. For 388223/388225 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 29510 event pairs, 905 based on Foata normal form. 6/5290 useless extension candidates. Maximal degree in co-relation 42271. Up to 5163 conditions per place. [2024-06-14 13:02:17,930 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 288 selfloop transitions, 25 changer transitions 0/316 dead transitions. [2024-06-14 13:02:17,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 316 transitions, 4681 flow [2024-06-14 13:02:17,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:02:17,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:02:17,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 128 transitions. [2024-06-14 13:02:17,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3902439024390244 [2024-06-14 13:02:17,932 INFO L175 Difference]: Start difference. First operand has 243 places, 287 transitions, 3919 flow. Second operand 8 states and 128 transitions. [2024-06-14 13:02:17,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 316 transitions, 4681 flow [2024-06-14 13:02:18,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 316 transitions, 4568 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-14 13:02:18,803 INFO L231 Difference]: Finished difference. Result has 245 places, 289 transitions, 3928 flow [2024-06-14 13:02:18,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3806, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3928, PETRI_PLACES=245, PETRI_TRANSITIONS=289} [2024-06-14 13:02:18,804 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 203 predicate places. [2024-06-14 13:02:18,804 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 289 transitions, 3928 flow [2024-06-14 13:02:18,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:02:18,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:02:18,804 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:02:18,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-14 13:02:18,804 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:02:18,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:02:18,805 INFO L85 PathProgramCache]: Analyzing trace with hash -959463974, now seen corresponding path program 10 times [2024-06-14 13:02:18,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:02:18,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6605683] [2024-06-14 13:02:18,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:02:18,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:02:18,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:02:19,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:02:19,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:02:19,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6605683] [2024-06-14 13:02:19,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6605683] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:02:19,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:02:19,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:02:19,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218211781] [2024-06-14 13:02:19,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:02:19,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:02:19,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:02:19,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:02:19,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:02:19,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:02:19,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 289 transitions, 3928 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:02:19,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:02:19,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:02:19,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:02:21,241 INFO L124 PetriNetUnfolderBase]: 3642/5656 cut-off events. [2024-06-14 13:02:21,241 INFO L125 PetriNetUnfolderBase]: For 464678/464680 co-relation queries the response was YES. [2024-06-14 13:02:21,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46377 conditions, 5656 events. 3642/5656 cut-off events. For 464678/464680 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 32251 event pairs, 824 based on Foata normal form. 16/5670 useless extension candidates. Maximal degree in co-relation 46256. Up to 4845 conditions per place. [2024-06-14 13:02:21,309 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 288 selfloop transitions, 55 changer transitions 0/346 dead transitions. [2024-06-14 13:02:21,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 346 transitions, 5184 flow [2024-06-14 13:02:21,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:02:21,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:02:21,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-14 13:02:21,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45528455284552843 [2024-06-14 13:02:21,328 INFO L175 Difference]: Start difference. First operand has 245 places, 289 transitions, 3928 flow. Second operand 9 states and 168 transitions. [2024-06-14 13:02:21,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 346 transitions, 5184 flow [2024-06-14 13:02:22,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 346 transitions, 5024 flow, removed 56 selfloop flow, removed 6 redundant places. [2024-06-14 13:02:22,213 INFO L231 Difference]: Finished difference. Result has 249 places, 294 transitions, 4084 flow [2024-06-14 13:02:22,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3826, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4084, PETRI_PLACES=249, PETRI_TRANSITIONS=294} [2024-06-14 13:02:22,214 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 207 predicate places. [2024-06-14 13:02:22,214 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 294 transitions, 4084 flow [2024-06-14 13:02:22,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:02:22,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:02:22,214 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:02:22,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-14 13:02:22,214 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:02:22,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:02:22,215 INFO L85 PathProgramCache]: Analyzing trace with hash -953738522, now seen corresponding path program 9 times [2024-06-14 13:02:22,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:02:22,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330674678] [2024-06-14 13:02:22,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:02:22,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:02:22,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:02:23,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:02:23,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:02:23,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330674678] [2024-06-14 13:02:23,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330674678] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:02:23,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:02:23,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:02:23,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457684262] [2024-06-14 13:02:23,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:02:23,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:02:23,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:02:23,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:02:23,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:02:23,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:02:23,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 294 transitions, 4084 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:02:23,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:02:23,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:02:23,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:02:24,584 INFO L124 PetriNetUnfolderBase]: 3659/5683 cut-off events. [2024-06-14 13:02:24,584 INFO L125 PetriNetUnfolderBase]: For 464317/464319 co-relation queries the response was YES. [2024-06-14 13:02:24,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46956 conditions, 5683 events. 3659/5683 cut-off events. For 464317/464319 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 32547 event pairs, 978 based on Foata normal form. 4/5685 useless extension candidates. Maximal degree in co-relation 46833. Up to 5426 conditions per place. [2024-06-14 13:02:24,659 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 287 selfloop transitions, 37 changer transitions 0/327 dead transitions. [2024-06-14 13:02:24,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 327 transitions, 4884 flow [2024-06-14 13:02:24,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:02:24,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:02:24,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2024-06-14 13:02:24,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4146341463414634 [2024-06-14 13:02:24,660 INFO L175 Difference]: Start difference. First operand has 249 places, 294 transitions, 4084 flow. Second operand 8 states and 136 transitions. [2024-06-14 13:02:24,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 327 transitions, 4884 flow [2024-06-14 13:02:25,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 327 transitions, 4796 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-14 13:02:25,790 INFO L231 Difference]: Finished difference. Result has 252 places, 296 transitions, 4147 flow [2024-06-14 13:02:25,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3996, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4147, PETRI_PLACES=252, PETRI_TRANSITIONS=296} [2024-06-14 13:02:25,791 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 210 predicate places. [2024-06-14 13:02:25,791 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 296 transitions, 4147 flow [2024-06-14 13:02:25,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:02:25,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:02:25,792 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:02:25,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-14 13:02:25,792 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:02:25,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:02:25,793 INFO L85 PathProgramCache]: Analyzing trace with hash 646055428, now seen corresponding path program 11 times [2024-06-14 13:02:25,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:02:25,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752741934] [2024-06-14 13:02:25,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:02:25,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:02:25,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:02:26,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:02:26,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:02:26,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752741934] [2024-06-14 13:02:26,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752741934] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:02:26,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:02:26,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:02:26,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553802398] [2024-06-14 13:02:26,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:02:26,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:02:26,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:02:26,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:02:26,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:02:26,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:02:26,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 296 transitions, 4147 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:02:26,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:02:26,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:02:26,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:02:28,195 INFO L124 PetriNetUnfolderBase]: 3775/5879 cut-off events. [2024-06-14 13:02:28,196 INFO L125 PetriNetUnfolderBase]: For 523437/523439 co-relation queries the response was YES. [2024-06-14 13:02:28,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48325 conditions, 5879 events. 3775/5879 cut-off events. For 523437/523439 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 34007 event pairs, 1008 based on Foata normal form. 32/5909 useless extension candidates. Maximal degree in co-relation 48200. Up to 5469 conditions per place. [2024-06-14 13:02:28,268 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 299 selfloop transitions, 36 changer transitions 0/338 dead transitions. [2024-06-14 13:02:28,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 338 transitions, 5024 flow [2024-06-14 13:02:28,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:02:28,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:02:28,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-14 13:02:28,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42005420054200543 [2024-06-14 13:02:28,270 INFO L175 Difference]: Start difference. First operand has 252 places, 296 transitions, 4147 flow. Second operand 9 states and 155 transitions. [2024-06-14 13:02:28,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 338 transitions, 5024 flow [2024-06-14 13:02:29,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 338 transitions, 4893 flow, removed 33 selfloop flow, removed 6 redundant places. [2024-06-14 13:02:29,254 INFO L231 Difference]: Finished difference. Result has 255 places, 298 transitions, 4169 flow [2024-06-14 13:02:29,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4016, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4169, PETRI_PLACES=255, PETRI_TRANSITIONS=298} [2024-06-14 13:02:29,254 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 213 predicate places. [2024-06-14 13:02:29,254 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 298 transitions, 4169 flow [2024-06-14 13:02:29,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:02:29,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:02:29,255 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:02:29,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-14 13:02:29,255 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:02:29,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:02:29,255 INFO L85 PathProgramCache]: Analyzing trace with hash -959316104, now seen corresponding path program 12 times [2024-06-14 13:02:29,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:02:29,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400806480] [2024-06-14 13:02:29,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:02:29,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:02:29,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:02:30,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:02:30,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:02:30,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400806480] [2024-06-14 13:02:30,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400806480] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:02:30,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:02:30,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:02:30,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078547565] [2024-06-14 13:02:30,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:02:30,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:02:30,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:02:30,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:02:30,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:02:30,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:02:30,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 298 transitions, 4169 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:02:30,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:02:30,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:02:30,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:02:31,715 INFO L124 PetriNetUnfolderBase]: 3891/6075 cut-off events. [2024-06-14 13:02:31,715 INFO L125 PetriNetUnfolderBase]: For 544062/544064 co-relation queries the response was YES. [2024-06-14 13:02:31,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49689 conditions, 6075 events. 3891/6075 cut-off events. For 544062/544064 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 35626 event pairs, 1038 based on Foata normal form. 32/6105 useless extension candidates. Maximal degree in co-relation 49564. Up to 5665 conditions per place. [2024-06-14 13:02:31,791 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 302 selfloop transitions, 38 changer transitions 0/343 dead transitions. [2024-06-14 13:02:31,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 343 transitions, 5068 flow [2024-06-14 13:02:31,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:02:31,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:02:31,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-14 13:02:31,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4281842818428184 [2024-06-14 13:02:31,792 INFO L175 Difference]: Start difference. First operand has 255 places, 298 transitions, 4169 flow. Second operand 9 states and 158 transitions. [2024-06-14 13:02:31,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 343 transitions, 5068 flow [2024-06-14 13:02:32,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 343 transitions, 4972 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-14 13:02:32,784 INFO L231 Difference]: Finished difference. Result has 257 places, 300 transitions, 4234 flow [2024-06-14 13:02:32,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4073, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4234, PETRI_PLACES=257, PETRI_TRANSITIONS=300} [2024-06-14 13:02:32,785 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 215 predicate places. [2024-06-14 13:02:32,785 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 300 transitions, 4234 flow [2024-06-14 13:02:32,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:02:32,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:02:32,785 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:02:32,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-14 13:02:32,786 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:02:32,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:02:32,786 INFO L85 PathProgramCache]: Analyzing trace with hash -959460254, now seen corresponding path program 13 times [2024-06-14 13:02:32,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:02:32,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996886671] [2024-06-14 13:02:32,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:02:32,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:02:32,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:02:33,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:02:33,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:02:33,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996886671] [2024-06-14 13:02:33,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996886671] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:02:33,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:02:33,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:02:33,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086539292] [2024-06-14 13:02:33,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:02:33,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:02:33,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:02:33,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:02:33,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:02:33,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:02:33,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 300 transitions, 4234 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:02:33,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:02:33,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:02:33,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:02:35,453 INFO L124 PetriNetUnfolderBase]: 3966/6200 cut-off events. [2024-06-14 13:02:35,454 INFO L125 PetriNetUnfolderBase]: For 542565/542567 co-relation queries the response was YES. [2024-06-14 13:02:35,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50622 conditions, 6200 events. 3966/6200 cut-off events. For 542565/542567 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 36546 event pairs, 1038 based on Foata normal form. 20/6218 useless extension candidates. Maximal degree in co-relation 50496. Up to 5582 conditions per place. [2024-06-14 13:02:35,532 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 296 selfloop transitions, 53 changer transitions 0/352 dead transitions. [2024-06-14 13:02:35,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 352 transitions, 5136 flow [2024-06-14 13:02:35,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:02:35,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:02:35,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 178 transitions. [2024-06-14 13:02:35,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43414634146341463 [2024-06-14 13:02:35,537 INFO L175 Difference]: Start difference. First operand has 257 places, 300 transitions, 4234 flow. Second operand 10 states and 178 transitions. [2024-06-14 13:02:35,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 352 transitions, 5136 flow [2024-06-14 13:02:36,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 352 transitions, 5032 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-14 13:02:36,532 INFO L231 Difference]: Finished difference. Result has 260 places, 301 transitions, 4285 flow [2024-06-14 13:02:36,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4130, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4285, PETRI_PLACES=260, PETRI_TRANSITIONS=301} [2024-06-14 13:02:36,534 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 218 predicate places. [2024-06-14 13:02:36,534 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 301 transitions, 4285 flow [2024-06-14 13:02:36,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:02:36,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:02:36,535 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:02:36,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-14 13:02:36,535 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:02:36,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:02:36,535 INFO L85 PathProgramCache]: Analyzing trace with hash -992775562, now seen corresponding path program 10 times [2024-06-14 13:02:36,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:02:36,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186113052] [2024-06-14 13:02:36,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:02:36,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:02:36,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:02:37,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:02:37,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:02:37,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186113052] [2024-06-14 13:02:37,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186113052] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:02:37,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:02:37,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:02:37,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019569676] [2024-06-14 13:02:37,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:02:37,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:02:37,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:02:37,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:02:37,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:02:37,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:02:37,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 301 transitions, 4285 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:02:37,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:02:37,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:02:37,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:02:39,071 INFO L124 PetriNetUnfolderBase]: 4000/6254 cut-off events. [2024-06-14 13:02:39,071 INFO L125 PetriNetUnfolderBase]: For 532384/532386 co-relation queries the response was YES. [2024-06-14 13:02:39,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51191 conditions, 6254 events. 4000/6254 cut-off events. For 532384/532386 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 36979 event pairs, 1079 based on Foata normal form. 6/6258 useless extension candidates. Maximal degree in co-relation 51064. Up to 6122 conditions per place. [2024-06-14 13:02:39,134 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 310 selfloop transitions, 20 changer transitions 0/333 dead transitions. [2024-06-14 13:02:39,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 333 transitions, 5101 flow [2024-06-14 13:02:39,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:02:39,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:02:39,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 128 transitions. [2024-06-14 13:02:39,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3902439024390244 [2024-06-14 13:02:39,135 INFO L175 Difference]: Start difference. First operand has 260 places, 301 transitions, 4285 flow. Second operand 8 states and 128 transitions. [2024-06-14 13:02:39,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 333 transitions, 5101 flow [2024-06-14 13:02:39,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 333 transitions, 4990 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-14 13:02:39,876 INFO L231 Difference]: Finished difference. Result has 261 places, 306 transitions, 4319 flow [2024-06-14 13:02:39,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4174, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4319, PETRI_PLACES=261, PETRI_TRANSITIONS=306} [2024-06-14 13:02:39,877 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 219 predicate places. [2024-06-14 13:02:39,877 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 306 transitions, 4319 flow [2024-06-14 13:02:39,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:02:39,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:02:39,877 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:02:39,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-14 13:02:39,877 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:02:39,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:02:39,878 INFO L85 PathProgramCache]: Analyzing trace with hash -992990764, now seen corresponding path program 14 times [2024-06-14 13:02:39,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:02:39,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378597484] [2024-06-14 13:02:39,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:02:39,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:02:39,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:02:40,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:02:40,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:02:40,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378597484] [2024-06-14 13:02:40,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378597484] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:02:40,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:02:40,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:02:40,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675438497] [2024-06-14 13:02:40,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:02:40,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:02:40,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:02:40,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:02:40,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:02:40,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:02:40,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 306 transitions, 4319 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:02:40,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:02:40,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:02:40,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:02:42,409 INFO L124 PetriNetUnfolderBase]: 3944/6166 cut-off events. [2024-06-14 13:02:42,409 INFO L125 PetriNetUnfolderBase]: For 540307/540309 co-relation queries the response was YES. [2024-06-14 13:02:42,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48838 conditions, 6166 events. 3944/6166 cut-off events. For 540307/540309 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 36361 event pairs, 1038 based on Foata normal form. 34/6198 useless extension candidates. Maximal degree in co-relation 48709. Up to 5863 conditions per place. [2024-06-14 13:02:42,480 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 319 selfloop transitions, 21 changer transitions 0/343 dead transitions. [2024-06-14 13:02:42,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 343 transitions, 5163 flow [2024-06-14 13:02:42,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:02:42,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:02:42,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 146 transitions. [2024-06-14 13:02:42,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3956639566395664 [2024-06-14 13:02:42,482 INFO L175 Difference]: Start difference. First operand has 261 places, 306 transitions, 4319 flow. Second operand 9 states and 146 transitions. [2024-06-14 13:02:42,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 343 transitions, 5163 flow [2024-06-14 13:02:43,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 343 transitions, 5028 flow, removed 52 selfloop flow, removed 5 redundant places. [2024-06-14 13:02:43,661 INFO L231 Difference]: Finished difference. Result has 265 places, 307 transitions, 4274 flow [2024-06-14 13:02:43,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4196, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4274, PETRI_PLACES=265, PETRI_TRANSITIONS=307} [2024-06-14 13:02:43,662 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 223 predicate places. [2024-06-14 13:02:43,662 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 307 transitions, 4274 flow [2024-06-14 13:02:43,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:02:43,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:02:43,662 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:02:43,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-14 13:02:43,662 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:02:43,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:02:43,663 INFO L85 PathProgramCache]: Analyzing trace with hash -985633379, now seen corresponding path program 1 times [2024-06-14 13:02:43,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:02:43,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500161559] [2024-06-14 13:02:43,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:02:43,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:02:43,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:02:44,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:02:44,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:02:44,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500161559] [2024-06-14 13:02:44,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500161559] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:02:44,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:02:44,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:02:44,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963383301] [2024-06-14 13:02:44,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:02:44,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:02:44,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:02:44,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:02:44,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:02:44,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:02:44,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 307 transitions, 4274 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:02:44,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:02:44,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:02:44,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:02:46,331 INFO L124 PetriNetUnfolderBase]: 3939/6159 cut-off events. [2024-06-14 13:02:46,331 INFO L125 PetriNetUnfolderBase]: For 494575/494577 co-relation queries the response was YES. [2024-06-14 13:02:46,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48525 conditions, 6159 events. 3939/6159 cut-off events. For 494575/494577 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 36306 event pairs, 1039 based on Foata normal form. 4/6161 useless extension candidates. Maximal degree in co-relation 48395. Up to 6027 conditions per place. [2024-06-14 13:02:46,407 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 302 selfloop transitions, 29 changer transitions 0/334 dead transitions. [2024-06-14 13:02:46,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 334 transitions, 5014 flow [2024-06-14 13:02:46,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:02:46,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:02:46,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 129 transitions. [2024-06-14 13:02:46,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3932926829268293 [2024-06-14 13:02:46,409 INFO L175 Difference]: Start difference. First operand has 265 places, 307 transitions, 4274 flow. Second operand 8 states and 129 transitions. [2024-06-14 13:02:46,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 334 transitions, 5014 flow [2024-06-14 13:02:47,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 334 transitions, 4946 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-14 13:02:47,666 INFO L231 Difference]: Finished difference. Result has 266 places, 307 transitions, 4276 flow [2024-06-14 13:02:47,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4206, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4276, PETRI_PLACES=266, PETRI_TRANSITIONS=307} [2024-06-14 13:02:47,667 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 224 predicate places. [2024-06-14 13:02:47,667 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 307 transitions, 4276 flow [2024-06-14 13:02:47,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:02:47,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:02:47,667 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:02:47,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-14 13:02:47,667 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:02:47,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:02:47,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1823379672, now seen corresponding path program 11 times [2024-06-14 13:02:47,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:02:47,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825312574] [2024-06-14 13:02:47,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:02:47,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:02:47,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:02:48,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:02:48,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:02:48,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825312574] [2024-06-14 13:02:48,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825312574] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:02:48,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:02:48,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:02:48,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014613833] [2024-06-14 13:02:48,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:02:48,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:02:48,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:02:48,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:02:48,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:02:48,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:02:48,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 307 transitions, 4276 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:02:48,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:02:48,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:02:48,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:02:50,085 INFO L124 PetriNetUnfolderBase]: 3931/6147 cut-off events. [2024-06-14 13:02:50,085 INFO L125 PetriNetUnfolderBase]: For 505123/505125 co-relation queries the response was YES. [2024-06-14 13:02:50,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48317 conditions, 6147 events. 3931/6147 cut-off events. For 505123/505125 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 36219 event pairs, 1032 based on Foata normal form. 6/6151 useless extension candidates. Maximal degree in co-relation 48186. Up to 5929 conditions per place. [2024-06-14 13:02:50,165 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 300 selfloop transitions, 33 changer transitions 0/336 dead transitions. [2024-06-14 13:02:50,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 336 transitions, 5090 flow [2024-06-14 13:02:50,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:02:50,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:02:50,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 129 transitions. [2024-06-14 13:02:50,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3932926829268293 [2024-06-14 13:02:50,167 INFO L175 Difference]: Start difference. First operand has 266 places, 307 transitions, 4276 flow. Second operand 8 states and 129 transitions. [2024-06-14 13:02:50,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 336 transitions, 5090 flow [2024-06-14 13:02:51,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 336 transitions, 4975 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-14 13:02:51,521 INFO L231 Difference]: Finished difference. Result has 267 places, 309 transitions, 4315 flow [2024-06-14 13:02:51,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4161, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4315, PETRI_PLACES=267, PETRI_TRANSITIONS=309} [2024-06-14 13:02:51,521 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 225 predicate places. [2024-06-14 13:02:51,521 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 309 transitions, 4315 flow [2024-06-14 13:02:51,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:02:51,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:02:51,522 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:02:51,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-14 13:02:51,522 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:02:51,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:02:51,522 INFO L85 PathProgramCache]: Analyzing trace with hash -2085655218, now seen corresponding path program 2 times [2024-06-14 13:02:51,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:02:51,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607402471] [2024-06-14 13:02:51,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:02:51,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:02:51,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:02:52,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:02:52,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:02:52,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607402471] [2024-06-14 13:02:52,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607402471] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:02:52,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:02:52,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:02:52,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453158089] [2024-06-14 13:02:52,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:02:52,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:02:52,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:02:52,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:02:52,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:02:52,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-14 13:02:52,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 309 transitions, 4315 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:02:52,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:02:52,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-14 13:02:52,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:02:53,495 INFO L124 PetriNetUnfolderBase]: 3863/6068 cut-off events. [2024-06-14 13:02:53,495 INFO L125 PetriNetUnfolderBase]: For 510670/510672 co-relation queries the response was YES. [2024-06-14 13:02:53,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48028 conditions, 6068 events. 3863/6068 cut-off events. For 510670/510672 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 36039 event pairs, 1009 based on Foata normal form. 5/6036 useless extension candidates. Maximal degree in co-relation 47896. Up to 5926 conditions per place. [2024-06-14 13:02:53,580 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 286 selfloop transitions, 27 changer transitions 0/331 dead transitions. [2024-06-14 13:02:53,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 331 transitions, 5083 flow [2024-06-14 13:02:53,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 13:02:53,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 13:02:53,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 97 transitions. [2024-06-14 13:02:53,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3943089430894309 [2024-06-14 13:02:53,582 INFO L175 Difference]: Start difference. First operand has 267 places, 309 transitions, 4315 flow. Second operand 6 states and 97 transitions. [2024-06-14 13:02:53,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 331 transitions, 5083 flow [2024-06-14 13:02:54,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 331 transitions, 4949 flow, removed 37 selfloop flow, removed 6 redundant places. [2024-06-14 13:02:54,580 INFO L231 Difference]: Finished difference. Result has 268 places, 321 transitions, 4389 flow [2024-06-14 13:02:54,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4181, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4389, PETRI_PLACES=268, PETRI_TRANSITIONS=321} [2024-06-14 13:02:54,580 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 226 predicate places. [2024-06-14 13:02:54,581 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 321 transitions, 4389 flow [2024-06-14 13:02:54,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:02:54,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:02:54,581 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:02:54,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-14 13:02:54,581 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:02:54,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:02:54,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1282607658, now seen corresponding path program 3 times [2024-06-14 13:02:54,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:02:54,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914773645] [2024-06-14 13:02:54,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:02:54,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:02:54,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:02:55,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:02:55,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:02:55,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914773645] [2024-06-14 13:02:55,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914773645] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:02:55,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:02:55,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:02:55,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508967860] [2024-06-14 13:02:55,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:02:55,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:02:55,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:02:55,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:02:55,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:02:55,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-14 13:02:55,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 321 transitions, 4389 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:02:55,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:02:55,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-14 13:02:55,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:02:56,742 INFO L124 PetriNetUnfolderBase]: 3865/6073 cut-off events. [2024-06-14 13:02:56,742 INFO L125 PetriNetUnfolderBase]: For 500643/500645 co-relation queries the response was YES. [2024-06-14 13:02:56,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47713 conditions, 6073 events. 3865/6073 cut-off events. For 500643/500645 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 36071 event pairs, 1011 based on Foata normal form. 6/6042 useless extension candidates. Maximal degree in co-relation 47579. Up to 5850 conditions per place. [2024-06-14 13:02:56,826 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 260 selfloop transitions, 69 changer transitions 0/347 dead transitions. [2024-06-14 13:02:56,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 347 transitions, 5326 flow [2024-06-14 13:02:56,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 13:02:56,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 13:02:56,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 108 transitions. [2024-06-14 13:02:56,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43902439024390244 [2024-06-14 13:02:56,828 INFO L175 Difference]: Start difference. First operand has 268 places, 321 transitions, 4389 flow. Second operand 6 states and 108 transitions. [2024-06-14 13:02:56,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 347 transitions, 5326 flow [2024-06-14 13:02:58,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 347 transitions, 5277 flow, removed 13 selfloop flow, removed 2 redundant places. [2024-06-14 13:02:58,294 INFO L231 Difference]: Finished difference. Result has 272 places, 329 transitions, 4607 flow [2024-06-14 13:02:58,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4340, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4607, PETRI_PLACES=272, PETRI_TRANSITIONS=329} [2024-06-14 13:02:58,294 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 230 predicate places. [2024-06-14 13:02:58,295 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 329 transitions, 4607 flow [2024-06-14 13:02:58,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:02:58,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:02:58,295 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:02:58,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-14 13:02:58,295 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:02:58,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:02:58,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1143815900, now seen corresponding path program 1 times [2024-06-14 13:02:58,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:02:58,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540081499] [2024-06-14 13:02:58,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:02:58,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:02:58,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:02:59,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:02:59,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:02:59,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540081499] [2024-06-14 13:02:59,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540081499] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:02:59,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:02:59,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:02:59,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529202942] [2024-06-14 13:02:59,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:02:59,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:02:59,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:02:59,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:02:59,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:02:59,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:02:59,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 329 transitions, 4607 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 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) [2024-06-14 13:02:59,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:02:59,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:02:59,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:03:00,581 INFO L124 PetriNetUnfolderBase]: 3977/6212 cut-off events. [2024-06-14 13:03:00,581 INFO L125 PetriNetUnfolderBase]: For 507142/507144 co-relation queries the response was YES. [2024-06-14 13:03:00,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48747 conditions, 6212 events. 3977/6212 cut-off events. For 507142/507144 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 36656 event pairs, 1047 based on Foata normal form. 4/6214 useless extension candidates. Maximal degree in co-relation 48611. Up to 6146 conditions per place. [2024-06-14 13:03:00,665 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 326 selfloop transitions, 21 changer transitions 0/350 dead transitions. [2024-06-14 13:03:00,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 350 transitions, 5561 flow [2024-06-14 13:03:00,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 13:03:00,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 13:03:00,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 98 transitions. [2024-06-14 13:03:00,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3983739837398374 [2024-06-14 13:03:00,666 INFO L175 Difference]: Start difference. First operand has 272 places, 329 transitions, 4607 flow. Second operand 6 states and 98 transitions. [2024-06-14 13:03:00,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 350 transitions, 5561 flow [2024-06-14 13:03:02,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 350 transitions, 5433 flow, removed 23 selfloop flow, removed 4 redundant places. [2024-06-14 13:03:02,057 INFO L231 Difference]: Finished difference. Result has 274 places, 335 transitions, 4628 flow [2024-06-14 13:03:02,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4481, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4628, PETRI_PLACES=274, PETRI_TRANSITIONS=335} [2024-06-14 13:03:02,057 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 232 predicate places. [2024-06-14 13:03:02,057 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 335 transitions, 4628 flow [2024-06-14 13:03:02,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 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) [2024-06-14 13:03:02,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:03:02,058 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:03:02,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-14 13:03:02,058 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:03:02,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:03:02,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1169796380, now seen corresponding path program 2 times [2024-06-14 13:03:02,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:03:02,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482103829] [2024-06-14 13:03:02,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:03:02,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:03:02,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:03:03,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:03:03,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:03:03,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482103829] [2024-06-14 13:03:03,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482103829] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:03:03,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:03:03,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:03:03,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205093431] [2024-06-14 13:03:03,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:03:03,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:03:03,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:03:03,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:03:03,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:03:03,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:03:03,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 335 transitions, 4628 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 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) [2024-06-14 13:03:03,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:03:03,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:03:03,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:03:04,311 INFO L124 PetriNetUnfolderBase]: 3971/6204 cut-off events. [2024-06-14 13:03:04,311 INFO L125 PetriNetUnfolderBase]: For 505105/505107 co-relation queries the response was YES. [2024-06-14 13:03:04,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48750 conditions, 6204 events. 3971/6204 cut-off events. For 505105/505107 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 36629 event pairs, 1046 based on Foata normal form. 4/6206 useless extension candidates. Maximal degree in co-relation 48614. Up to 6149 conditions per place. [2024-06-14 13:03:04,389 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 326 selfloop transitions, 18 changer transitions 0/347 dead transitions. [2024-06-14 13:03:04,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 347 transitions, 5348 flow [2024-06-14 13:03:04,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 13:03:04,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 13:03:04,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 85 transitions. [2024-06-14 13:03:04,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4146341463414634 [2024-06-14 13:03:04,391 INFO L175 Difference]: Start difference. First operand has 274 places, 335 transitions, 4628 flow. Second operand 5 states and 85 transitions. [2024-06-14 13:03:04,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 347 transitions, 5348 flow [2024-06-14 13:03:05,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 347 transitions, 5267 flow, removed 35 selfloop flow, removed 2 redundant places. [2024-06-14 13:03:05,452 INFO L231 Difference]: Finished difference. Result has 277 places, 335 transitions, 4595 flow [2024-06-14 13:03:05,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4547, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4595, PETRI_PLACES=277, PETRI_TRANSITIONS=335} [2024-06-14 13:03:05,452 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 235 predicate places. [2024-06-14 13:03:05,453 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 335 transitions, 4595 flow [2024-06-14 13:03:05,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 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) [2024-06-14 13:03:05,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:03:05,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:03:05,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-14 13:03:05,453 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:03:05,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:03:05,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1282177068, now seen corresponding path program 1 times [2024-06-14 13:03:05,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:03:05,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120368393] [2024-06-14 13:03:05,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:03:05,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:03:05,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:03:06,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:03:06,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:03:06,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120368393] [2024-06-14 13:03:06,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120368393] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:03:06,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:03:06,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:03:06,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829818746] [2024-06-14 13:03:06,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:03:06,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:03:06,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:03:06,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:03:06,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:03:06,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-14 13:03:06,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 335 transitions, 4595 flow. Second operand has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:06,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:03:06,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-14 13:03:06,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:03:07,972 INFO L124 PetriNetUnfolderBase]: 3864/6070 cut-off events. [2024-06-14 13:03:07,973 INFO L125 PetriNetUnfolderBase]: For 514705/514714 co-relation queries the response was YES. [2024-06-14 13:03:08,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48016 conditions, 6070 events. 3864/6070 cut-off events. For 514705/514714 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 35973 event pairs, 1000 based on Foata normal form. 8/6041 useless extension candidates. Maximal degree in co-relation 47878. Up to 5935 conditions per place. [2024-06-14 13:03:08,078 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 309 selfloop transitions, 20 changer transitions 0/347 dead transitions. [2024-06-14 13:03:08,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 347 transitions, 5305 flow [2024-06-14 13:03:08,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 13:03:08,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 13:03:08,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 96 transitions. [2024-06-14 13:03:08,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3902439024390244 [2024-06-14 13:03:08,079 INFO L175 Difference]: Start difference. First operand has 277 places, 335 transitions, 4595 flow. Second operand 6 states and 96 transitions. [2024-06-14 13:03:08,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 347 transitions, 5305 flow [2024-06-14 13:03:09,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 347 transitions, 5269 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-14 13:03:09,478 INFO L231 Difference]: Finished difference. Result has 279 places, 337 transitions, 4637 flow [2024-06-14 13:03:09,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4559, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4637, PETRI_PLACES=279, PETRI_TRANSITIONS=337} [2024-06-14 13:03:09,479 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 237 predicate places. [2024-06-14 13:03:09,479 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 337 transitions, 4637 flow [2024-06-14 13:03:09,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:09,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:03:09,479 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:03:09,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-14 13:03:09,480 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:03:09,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:03:09,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1226321629, now seen corresponding path program 1 times [2024-06-14 13:03:09,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:03:09,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208038678] [2024-06-14 13:03:09,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:03:09,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:03:09,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:03:10,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:03:10,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:03:10,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208038678] [2024-06-14 13:03:10,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208038678] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:03:10,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:03:10,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 13:03:10,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651569119] [2024-06-14 13:03:10,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:03:10,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 13:03:10,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:03:10,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 13:03:10,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 13:03:11,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:03:11,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 337 transitions, 4637 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:11,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:03:11,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:03:11,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:03:12,623 INFO L124 PetriNetUnfolderBase]: 3941/6158 cut-off events. [2024-06-14 13:03:12,623 INFO L125 PetriNetUnfolderBase]: For 519033/519035 co-relation queries the response was YES. [2024-06-14 13:03:12,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47982 conditions, 6158 events. 3941/6158 cut-off events. For 519033/519035 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 36289 event pairs, 882 based on Foata normal form. 12/6168 useless extension candidates. Maximal degree in co-relation 47843. Up to 5760 conditions per place. [2024-06-14 13:03:12,701 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 319 selfloop transitions, 60 changer transitions 0/382 dead transitions. [2024-06-14 13:03:12,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 382 transitions, 5531 flow [2024-06-14 13:03:12,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:03:12,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:03:12,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-06-14 13:03:12,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4121951219512195 [2024-06-14 13:03:12,702 INFO L175 Difference]: Start difference. First operand has 279 places, 337 transitions, 4637 flow. Second operand 10 states and 169 transitions. [2024-06-14 13:03:12,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 382 transitions, 5531 flow [2024-06-14 13:03:13,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 382 transitions, 5455 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-06-14 13:03:13,668 INFO L231 Difference]: Finished difference. Result has 285 places, 337 transitions, 4687 flow [2024-06-14 13:03:13,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4561, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4687, PETRI_PLACES=285, PETRI_TRANSITIONS=337} [2024-06-14 13:03:13,668 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 243 predicate places. [2024-06-14 13:03:13,669 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 337 transitions, 4687 flow [2024-06-14 13:03:13,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:13,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:03:13,669 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:03:13,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-14 13:03:13,669 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:03:13,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:03:13,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1041963026, now seen corresponding path program 1 times [2024-06-14 13:03:13,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:03:13,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548114783] [2024-06-14 13:03:13,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:03:13,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:03:13,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:03:14,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:03:14,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:03:14,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548114783] [2024-06-14 13:03:14,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548114783] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:03:14,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:03:14,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:03:14,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876541981] [2024-06-14 13:03:14,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:03:14,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:03:14,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:03:14,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:03:14,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:03:14,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:03:14,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 337 transitions, 4687 flow. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:14,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:03:14,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:03:14,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:03:15,846 INFO L124 PetriNetUnfolderBase]: 3981/6213 cut-off events. [2024-06-14 13:03:15,847 INFO L125 PetriNetUnfolderBase]: For 517167/517167 co-relation queries the response was YES. [2024-06-14 13:03:15,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48677 conditions, 6213 events. 3981/6213 cut-off events. For 517167/517167 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 36511 event pairs, 1008 based on Foata normal form. 4/6215 useless extension candidates. Maximal degree in co-relation 48537. Up to 6038 conditions per place. [2024-06-14 13:03:15,925 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 333 selfloop transitions, 53 changer transitions 0/389 dead transitions. [2024-06-14 13:03:15,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 389 transitions, 6093 flow [2024-06-14 13:03:15,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:03:15,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:03:15,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-14 13:03:15,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4268292682926829 [2024-06-14 13:03:15,926 INFO L175 Difference]: Start difference. First operand has 285 places, 337 transitions, 4687 flow. Second operand 8 states and 140 transitions. [2024-06-14 13:03:15,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 389 transitions, 6093 flow [2024-06-14 13:03:17,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 389 transitions, 5957 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-14 13:03:17,131 INFO L231 Difference]: Finished difference. Result has 287 places, 356 transitions, 4941 flow [2024-06-14 13:03:17,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4557, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4941, PETRI_PLACES=287, PETRI_TRANSITIONS=356} [2024-06-14 13:03:17,132 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 245 predicate places. [2024-06-14 13:03:17,132 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 356 transitions, 4941 flow [2024-06-14 13:03:17,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:17,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:03:17,132 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:03:17,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-14 13:03:17,133 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:03:17,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:03:17,133 INFO L85 PathProgramCache]: Analyzing trace with hash 518220083, now seen corresponding path program 2 times [2024-06-14 13:03:17,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:03:17,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620074063] [2024-06-14 13:03:17,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:03:17,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:03:17,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:03:18,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:03:18,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:03:18,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620074063] [2024-06-14 13:03:18,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620074063] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:03:18,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:03:18,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 13:03:18,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409846091] [2024-06-14 13:03:18,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:03:18,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 13:03:18,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:03:18,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 13:03:18,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 13:03:18,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:03:18,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 356 transitions, 4941 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:18,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:03:18,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:03:18,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:03:20,225 INFO L124 PetriNetUnfolderBase]: 3961/6182 cut-off events. [2024-06-14 13:03:20,225 INFO L125 PetriNetUnfolderBase]: For 522888/522890 co-relation queries the response was YES. [2024-06-14 13:03:20,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48278 conditions, 6182 events. 3961/6182 cut-off events. For 522888/522890 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 36318 event pairs, 925 based on Foata normal form. 12/6192 useless extension candidates. Maximal degree in co-relation 48135. Up to 5908 conditions per place. [2024-06-14 13:03:20,305 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 363 selfloop transitions, 41 changer transitions 0/407 dead transitions. [2024-06-14 13:03:20,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 407 transitions, 5905 flow [2024-06-14 13:03:20,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 13:03:20,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 13:03:20,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 193 transitions. [2024-06-14 13:03:20,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39227642276422764 [2024-06-14 13:03:20,306 INFO L175 Difference]: Start difference. First operand has 287 places, 356 transitions, 4941 flow. Second operand 12 states and 193 transitions. [2024-06-14 13:03:20,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 407 transitions, 5905 flow [2024-06-14 13:03:21,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 407 transitions, 5822 flow, removed 27 selfloop flow, removed 3 redundant places. [2024-06-14 13:03:21,584 INFO L231 Difference]: Finished difference. Result has 296 places, 356 transitions, 4947 flow [2024-06-14 13:03:21,584 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4859, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4947, PETRI_PLACES=296, PETRI_TRANSITIONS=356} [2024-06-14 13:03:21,584 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 254 predicate places. [2024-06-14 13:03:21,584 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 356 transitions, 4947 flow [2024-06-14 13:03:21,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:21,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:03:21,585 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:03:21,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-14 13:03:21,585 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:03:21,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:03:21,585 INFO L85 PathProgramCache]: Analyzing trace with hash 524706833, now seen corresponding path program 3 times [2024-06-14 13:03:21,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:03:21,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99261956] [2024-06-14 13:03:21,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:03:21,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:03:21,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:03:22,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:03:22,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:03:22,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99261956] [2024-06-14 13:03:22,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99261956] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:03:22,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:03:22,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 13:03:22,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278717497] [2024-06-14 13:03:22,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:03:22,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 13:03:22,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:03:22,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 13:03:22,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 13:03:23,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:03:23,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 356 transitions, 4947 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:23,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:03:23,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:03:23,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:03:24,497 INFO L124 PetriNetUnfolderBase]: 4002/6253 cut-off events. [2024-06-14 13:03:24,497 INFO L125 PetriNetUnfolderBase]: For 539382/539384 co-relation queries the response was YES. [2024-06-14 13:03:24,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49039 conditions, 6253 events. 4002/6253 cut-off events. For 539382/539384 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 36947 event pairs, 919 based on Foata normal form. 12/6263 useless extension candidates. Maximal degree in co-relation 48894. Up to 5938 conditions per place. [2024-06-14 13:03:24,585 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 363 selfloop transitions, 42 changer transitions 0/408 dead transitions. [2024-06-14 13:03:24,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 408 transitions, 5954 flow [2024-06-14 13:03:24,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 13:03:24,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 13:03:24,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 192 transitions. [2024-06-14 13:03:24,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3902439024390244 [2024-06-14 13:03:24,587 INFO L175 Difference]: Start difference. First operand has 296 places, 356 transitions, 4947 flow. Second operand 12 states and 192 transitions. [2024-06-14 13:03:24,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 408 transitions, 5954 flow [2024-06-14 13:03:25,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 408 transitions, 5858 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-14 13:03:25,942 INFO L231 Difference]: Finished difference. Result has 298 places, 357 transitions, 4987 flow [2024-06-14 13:03:25,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4851, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4987, PETRI_PLACES=298, PETRI_TRANSITIONS=357} [2024-06-14 13:03:25,943 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 256 predicate places. [2024-06-14 13:03:25,943 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 357 transitions, 4987 flow [2024-06-14 13:03:25,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:25,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:03:25,944 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:03:25,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-14 13:03:25,944 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:03:25,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:03:25,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1051217456, now seen corresponding path program 2 times [2024-06-14 13:03:25,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:03:25,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354397388] [2024-06-14 13:03:25,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:03:25,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:03:25,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:03:26,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:03:26,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:03:26,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354397388] [2024-06-14 13:03:26,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354397388] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:03:26,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:03:26,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:03:26,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394403238] [2024-06-14 13:03:26,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:03:26,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:03:26,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:03:26,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:03:26,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:03:26,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:03:26,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 357 transitions, 4987 flow. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:26,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:03:26,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:03:26,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:03:28,054 INFO L124 PetriNetUnfolderBase]: 4062/6336 cut-off events. [2024-06-14 13:03:28,055 INFO L125 PetriNetUnfolderBase]: For 542363/542363 co-relation queries the response was YES. [2024-06-14 13:03:28,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49933 conditions, 6336 events. 4062/6336 cut-off events. For 542363/542363 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 37402 event pairs, 1011 based on Foata normal form. 4/6338 useless extension candidates. Maximal degree in co-relation 49787. Up to 6123 conditions per place. [2024-06-14 13:03:28,140 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 337 selfloop transitions, 64 changer transitions 0/404 dead transitions. [2024-06-14 13:03:28,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 404 transitions, 6481 flow [2024-06-14 13:03:28,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:03:28,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:03:28,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2024-06-14 13:03:28,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4146341463414634 [2024-06-14 13:03:28,142 INFO L175 Difference]: Start difference. First operand has 298 places, 357 transitions, 4987 flow. Second operand 8 states and 136 transitions. [2024-06-14 13:03:28,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 404 transitions, 6481 flow [2024-06-14 13:03:29,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 404 transitions, 6355 flow, removed 20 selfloop flow, removed 10 redundant places. [2024-06-14 13:03:29,401 INFO L231 Difference]: Finished difference. Result has 298 places, 376 transitions, 5318 flow [2024-06-14 13:03:29,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4865, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5318, PETRI_PLACES=298, PETRI_TRANSITIONS=376} [2024-06-14 13:03:29,402 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 256 predicate places. [2024-06-14 13:03:29,402 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 376 transitions, 5318 flow [2024-06-14 13:03:29,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:29,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:03:29,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:03:29,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-14 13:03:29,403 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:03:29,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:03:29,403 INFO L85 PathProgramCache]: Analyzing trace with hash -814690458, now seen corresponding path program 3 times [2024-06-14 13:03:29,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:03:29,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44268551] [2024-06-14 13:03:29,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:03:29,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:03:29,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:03:30,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:03:30,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:03:30,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44268551] [2024-06-14 13:03:30,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44268551] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:03:30,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:03:30,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:03:30,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669287036] [2024-06-14 13:03:30,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:03:30,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:03:30,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:03:30,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:03:30,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:03:30,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:03:30,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 376 transitions, 5318 flow. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:30,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:03:30,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:03:30,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:03:31,630 INFO L124 PetriNetUnfolderBase]: 4203/6543 cut-off events. [2024-06-14 13:03:31,630 INFO L125 PetriNetUnfolderBase]: For 552618/552618 co-relation queries the response was YES. [2024-06-14 13:03:31,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51914 conditions, 6543 events. 4203/6543 cut-off events. For 552618/552618 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 38478 event pairs, 1050 based on Foata normal form. 2/6543 useless extension candidates. Maximal degree in co-relation 51765. Up to 6342 conditions per place. [2024-06-14 13:03:31,722 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 375 selfloop transitions, 70 changer transitions 0/448 dead transitions. [2024-06-14 13:03:31,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 448 transitions, 7342 flow [2024-06-14 13:03:31,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:03:31,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:03:31,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 140 transitions. [2024-06-14 13:03:31,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3794037940379404 [2024-06-14 13:03:31,724 INFO L175 Difference]: Start difference. First operand has 298 places, 376 transitions, 5318 flow. Second operand 9 states and 140 transitions. [2024-06-14 13:03:31,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 448 transitions, 7342 flow [2024-06-14 13:03:33,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 448 transitions, 7173 flow, removed 38 selfloop flow, removed 3 redundant places. [2024-06-14 13:03:33,269 INFO L231 Difference]: Finished difference. Result has 308 places, 421 transitions, 6224 flow [2024-06-14 13:03:33,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5219, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6224, PETRI_PLACES=308, PETRI_TRANSITIONS=421} [2024-06-14 13:03:33,269 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 266 predicate places. [2024-06-14 13:03:33,270 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 421 transitions, 6224 flow [2024-06-14 13:03:33,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:33,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:03:33,270 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:03:33,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-14 13:03:33,270 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:03:33,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:03:33,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1894827153, now seen corresponding path program 4 times [2024-06-14 13:03:33,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:03:33,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860073592] [2024-06-14 13:03:33,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:03:33,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:03:33,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:03:34,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:03:34,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:03:34,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860073592] [2024-06-14 13:03:34,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860073592] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:03:34,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:03:34,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:03:34,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393582197] [2024-06-14 13:03:34,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:03:34,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:03:34,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:03:34,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:03:34,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:03:34,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:03:34,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 421 transitions, 6224 flow. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:34,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:03:34,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:03:34,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:03:35,951 INFO L124 PetriNetUnfolderBase]: 4244/6615 cut-off events. [2024-06-14 13:03:35,951 INFO L125 PetriNetUnfolderBase]: For 591716/591718 co-relation queries the response was YES. [2024-06-14 13:03:36,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52772 conditions, 6615 events. 4244/6615 cut-off events. For 591716/591718 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 39132 event pairs, 1049 based on Foata normal form. 14/6627 useless extension candidates. Maximal degree in co-relation 52618. Up to 6435 conditions per place. [2024-06-14 13:03:36,052 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 433 selfloop transitions, 19 changer transitions 0/455 dead transitions. [2024-06-14 13:03:36,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 455 transitions, 7279 flow [2024-06-14 13:03:36,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:03:36,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:03:36,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 141 transitions. [2024-06-14 13:03:36,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3821138211382114 [2024-06-14 13:03:36,054 INFO L175 Difference]: Start difference. First operand has 308 places, 421 transitions, 6224 flow. Second operand 9 states and 141 transitions. [2024-06-14 13:03:36,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 455 transitions, 7279 flow [2024-06-14 13:03:37,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 455 transitions, 7200 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-14 13:03:37,760 INFO L231 Difference]: Finished difference. Result has 314 places, 422 transitions, 6239 flow [2024-06-14 13:03:37,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6147, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6239, PETRI_PLACES=314, PETRI_TRANSITIONS=422} [2024-06-14 13:03:37,761 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 272 predicate places. [2024-06-14 13:03:37,761 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 422 transitions, 6239 flow [2024-06-14 13:03:37,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:37,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:03:37,761 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:03:37,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-14 13:03:37,762 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:03:37,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:03:37,762 INFO L85 PathProgramCache]: Analyzing trace with hash -170105263, now seen corresponding path program 5 times [2024-06-14 13:03:37,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:03:37,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851480387] [2024-06-14 13:03:37,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:03:37,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:03:37,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:03:39,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:03:39,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:03:39,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851480387] [2024-06-14 13:03:39,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851480387] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:03:39,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:03:39,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 13:03:39,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263062132] [2024-06-14 13:03:39,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:03:39,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 13:03:39,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:03:39,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 13:03:39,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 13:03:39,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:03:39,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 422 transitions, 6239 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:39,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:03:39,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:03:39,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:03:40,832 INFO L124 PetriNetUnfolderBase]: 4257/6642 cut-off events. [2024-06-14 13:03:40,832 INFO L125 PetriNetUnfolderBase]: For 610198/610200 co-relation queries the response was YES. [2024-06-14 13:03:40,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52026 conditions, 6642 events. 4257/6642 cut-off events. For 610198/610200 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 39395 event pairs, 1068 based on Foata normal form. 30/6670 useless extension candidates. Maximal degree in co-relation 51871. Up to 6118 conditions per place. [2024-06-14 13:03:40,971 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 419 selfloop transitions, 36 changer transitions 0/458 dead transitions. [2024-06-14 13:03:40,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 458 transitions, 7328 flow [2024-06-14 13:03:40,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:03:40,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:03:40,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 147 transitions. [2024-06-14 13:03:40,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3983739837398374 [2024-06-14 13:03:40,973 INFO L175 Difference]: Start difference. First operand has 314 places, 422 transitions, 6239 flow. Second operand 9 states and 147 transitions. [2024-06-14 13:03:40,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 458 transitions, 7328 flow [2024-06-14 13:03:42,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 458 transitions, 7248 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-14 13:03:42,964 INFO L231 Difference]: Finished difference. Result has 317 places, 423 transitions, 6297 flow [2024-06-14 13:03:42,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6159, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6297, PETRI_PLACES=317, PETRI_TRANSITIONS=423} [2024-06-14 13:03:42,965 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 275 predicate places. [2024-06-14 13:03:42,965 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 423 transitions, 6297 flow [2024-06-14 13:03:42,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:42,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:03:42,966 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:03:42,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-14 13:03:42,966 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:03:42,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:03:42,966 INFO L85 PathProgramCache]: Analyzing trace with hash 498877615, now seen corresponding path program 6 times [2024-06-14 13:03:42,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:03:42,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806529910] [2024-06-14 13:03:42,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:03:42,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:03:42,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:03:44,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:03:44,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:03:44,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806529910] [2024-06-14 13:03:44,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806529910] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:03:44,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:03:44,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 13:03:44,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837167373] [2024-06-14 13:03:44,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:03:44,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 13:03:44,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:03:44,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 13:03:44,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 13:03:44,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:03:44,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 423 transitions, 6297 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:44,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:03:44,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:03:44,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:03:45,868 INFO L124 PetriNetUnfolderBase]: 4298/6711 cut-off events. [2024-06-14 13:03:45,868 INFO L125 PetriNetUnfolderBase]: For 588919/588923 co-relation queries the response was YES. [2024-06-14 13:03:45,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52620 conditions, 6711 events. 4298/6711 cut-off events. For 588919/588923 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 40064 event pairs, 1039 based on Foata normal form. 14/6723 useless extension candidates. Maximal degree in co-relation 52463. Up to 6338 conditions per place. [2024-06-14 13:03:45,970 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 406 selfloop transitions, 52 changer transitions 0/461 dead transitions. [2024-06-14 13:03:45,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 461 transitions, 7382 flow [2024-06-14 13:03:45,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:03:45,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:03:45,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 152 transitions. [2024-06-14 13:03:45,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41192411924119243 [2024-06-14 13:03:45,971 INFO L175 Difference]: Start difference. First operand has 317 places, 423 transitions, 6297 flow. Second operand 9 states and 152 transitions. [2024-06-14 13:03:45,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 461 transitions, 7382 flow [2024-06-14 13:03:47,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 461 transitions, 7121 flow, removed 20 selfloop flow, removed 10 redundant places. [2024-06-14 13:03:47,849 INFO L231 Difference]: Finished difference. Result has 316 places, 424 transitions, 6198 flow [2024-06-14 13:03:47,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6036, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6198, PETRI_PLACES=316, PETRI_TRANSITIONS=424} [2024-06-14 13:03:47,850 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 274 predicate places. [2024-06-14 13:03:47,850 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 424 transitions, 6198 flow [2024-06-14 13:03:47,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:47,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:03:47,850 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:03:47,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-14 13:03:47,851 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:03:47,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:03:47,851 INFO L85 PathProgramCache]: Analyzing trace with hash -169868113, now seen corresponding path program 7 times [2024-06-14 13:03:47,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:03:47,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855749918] [2024-06-14 13:03:47,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:03:47,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:03:47,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:03:49,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:03:49,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:03:49,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855749918] [2024-06-14 13:03:49,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855749918] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:03:49,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:03:49,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 13:03:49,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310632475] [2024-06-14 13:03:49,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:03:49,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 13:03:49,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:03:49,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 13:03:49,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 13:03:49,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:03:49,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 424 transitions, 6198 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:49,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:03:49,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:03:49,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:03:51,141 INFO L124 PetriNetUnfolderBase]: 4278/6681 cut-off events. [2024-06-14 13:03:51,141 INFO L125 PetriNetUnfolderBase]: For 572033/572035 co-relation queries the response was YES. [2024-06-14 13:03:51,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50721 conditions, 6681 events. 4278/6681 cut-off events. For 572033/572035 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 39851 event pairs, 1049 based on Foata normal form. 14/6693 useless extension candidates. Maximal degree in co-relation 50566. Up to 6378 conditions per place. [2024-06-14 13:03:51,245 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 418 selfloop transitions, 35 changer transitions 0/456 dead transitions. [2024-06-14 13:03:51,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 456 transitions, 7077 flow [2024-06-14 13:03:51,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:03:51,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:03:51,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 143 transitions. [2024-06-14 13:03:51,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875338753387534 [2024-06-14 13:03:51,246 INFO L175 Difference]: Start difference. First operand has 316 places, 424 transitions, 6198 flow. Second operand 9 states and 143 transitions. [2024-06-14 13:03:51,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 456 transitions, 7077 flow [2024-06-14 13:03:53,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 456 transitions, 6929 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-14 13:03:53,055 INFO L231 Difference]: Finished difference. Result has 317 places, 423 transitions, 5993 flow [2024-06-14 13:03:53,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5918, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5993, PETRI_PLACES=317, PETRI_TRANSITIONS=423} [2024-06-14 13:03:53,056 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 275 predicate places. [2024-06-14 13:03:53,056 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 423 transitions, 5993 flow [2024-06-14 13:03:53,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:53,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:03:53,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:03:53,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-14 13:03:53,056 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:03:53,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:03:53,057 INFO L85 PathProgramCache]: Analyzing trace with hash -243699434, now seen corresponding path program 4 times [2024-06-14 13:03:53,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:03:53,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59620122] [2024-06-14 13:03:53,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:03:53,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:03:53,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:03:53,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:03:53,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:03:53,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59620122] [2024-06-14 13:03:53,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59620122] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:03:53,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:03:53,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:03:53,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248929003] [2024-06-14 13:03:53,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:03:53,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:03:53,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:03:53,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:03:53,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:03:53,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:03:53,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 423 transitions, 5993 flow. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:53,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:03:53,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:03:53,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:03:55,282 INFO L124 PetriNetUnfolderBase]: 4282/6682 cut-off events. [2024-06-14 13:03:55,282 INFO L125 PetriNetUnfolderBase]: For 555908/555914 co-relation queries the response was YES. [2024-06-14 13:03:55,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50461 conditions, 6682 events. 4282/6682 cut-off events. For 555908/555914 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 39770 event pairs, 1022 based on Foata normal form. 10/6690 useless extension candidates. Maximal degree in co-relation 50305. Up to 6360 conditions per place. [2024-06-14 13:03:55,378 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 338 selfloop transitions, 113 changer transitions 0/454 dead transitions. [2024-06-14 13:03:55,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 454 transitions, 7341 flow [2024-06-14 13:03:55,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:03:55,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:03:55,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 125 transitions. [2024-06-14 13:03:55,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4355400696864111 [2024-06-14 13:03:55,380 INFO L175 Difference]: Start difference. First operand has 317 places, 423 transitions, 5993 flow. Second operand 7 states and 125 transitions. [2024-06-14 13:03:55,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 454 transitions, 7341 flow [2024-06-14 13:03:57,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 454 transitions, 7224 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-14 13:03:57,621 INFO L231 Difference]: Finished difference. Result has 317 places, 426 transitions, 6197 flow [2024-06-14 13:03:57,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5878, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6197, PETRI_PLACES=317, PETRI_TRANSITIONS=426} [2024-06-14 13:03:57,622 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 275 predicate places. [2024-06-14 13:03:57,622 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 426 transitions, 6197 flow [2024-06-14 13:03:57,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:57,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:03:57,623 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:03:57,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-14 13:03:57,623 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:03:57,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:03:57,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1106130680, now seen corresponding path program 5 times [2024-06-14 13:03:57,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:03:57,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525094133] [2024-06-14 13:03:57,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:03:57,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:03:57,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:03:58,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:03:58,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:03:58,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525094133] [2024-06-14 13:03:58,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525094133] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:03:58,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:03:58,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:03:58,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120542025] [2024-06-14 13:03:58,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:03:58,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:03:58,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:03:58,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:03:58,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:03:58,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:03:58,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 426 transitions, 6197 flow. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:58,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:03:58,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:03:58,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:03:59,804 INFO L124 PetriNetUnfolderBase]: 4282/6686 cut-off events. [2024-06-14 13:03:59,805 INFO L125 PetriNetUnfolderBase]: For 561777/561777 co-relation queries the response was YES. [2024-06-14 13:03:59,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50523 conditions, 6686 events. 4282/6686 cut-off events. For 561777/561777 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 39812 event pairs, 1041 based on Foata normal form. 4/6688 useless extension candidates. Maximal degree in co-relation 50366. Up to 6358 conditions per place. [2024-06-14 13:03:59,907 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 332 selfloop transitions, 116 changer transitions 0/451 dead transitions. [2024-06-14 13:03:59,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 451 transitions, 7391 flow [2024-06-14 13:03:59,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:03:59,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:03:59,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 118 transitions. [2024-06-14 13:03:59,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41114982578397213 [2024-06-14 13:03:59,909 INFO L175 Difference]: Start difference. First operand has 317 places, 426 transitions, 6197 flow. Second operand 7 states and 118 transitions. [2024-06-14 13:03:59,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 451 transitions, 7391 flow [2024-06-14 13:04:01,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 451 transitions, 7251 flow, removed 21 selfloop flow, removed 3 redundant places. [2024-06-14 13:04:01,584 INFO L231 Difference]: Finished difference. Result has 321 places, 430 transitions, 6381 flow [2024-06-14 13:04:01,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6068, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6381, PETRI_PLACES=321, PETRI_TRANSITIONS=430} [2024-06-14 13:04:01,585 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 279 predicate places. [2024-06-14 13:04:01,585 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 430 transitions, 6381 flow [2024-06-14 13:04:01,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:04:01,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:04:01,586 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:04:01,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-14 13:04:01,586 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:04:01,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:04:01,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1092797797, now seen corresponding path program 1 times [2024-06-14 13:04:01,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:04:01,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244461060] [2024-06-14 13:04:01,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:04:01,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:04:01,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:04:02,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:04:02,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:04:02,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244461060] [2024-06-14 13:04:02,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244461060] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:04:02,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:04:02,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:04:02,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351292160] [2024-06-14 13:04:02,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:04:02,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:04:02,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:04:02,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:04:02,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:04:02,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-14 13:04:02,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 430 transitions, 6381 flow. Second operand has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:04:02,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:04:02,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-14 13:04:02,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:04:04,285 INFO L124 PetriNetUnfolderBase]: 4140/6519 cut-off events. [2024-06-14 13:04:04,285 INFO L125 PetriNetUnfolderBase]: For 536873/536875 co-relation queries the response was YES. [2024-06-14 13:04:04,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48969 conditions, 6519 events. 4140/6519 cut-off events. For 536873/536875 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 39306 event pairs, 1044 based on Foata normal form. 3/6485 useless extension candidates. Maximal degree in co-relation 48811. Up to 6303 conditions per place. [2024-06-14 13:04:04,366 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 353 selfloop transitions, 35 changer transitions 0/439 dead transitions. [2024-06-14 13:04:04,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 439 transitions, 7181 flow [2024-06-14 13:04:04,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 13:04:04,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 13:04:04,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 96 transitions. [2024-06-14 13:04:04,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3902439024390244 [2024-06-14 13:04:04,368 INFO L175 Difference]: Start difference. First operand has 321 places, 430 transitions, 6381 flow. Second operand 6 states and 96 transitions. [2024-06-14 13:04:04,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 439 transitions, 7181 flow [2024-06-14 13:04:06,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 439 transitions, 7047 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-06-14 13:04:06,430 INFO L231 Difference]: Finished difference. Result has 324 places, 430 transitions, 6339 flow [2024-06-14 13:04:06,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6247, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6339, PETRI_PLACES=324, PETRI_TRANSITIONS=430} [2024-06-14 13:04:06,431 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 282 predicate places. [2024-06-14 13:04:06,431 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 430 transitions, 6339 flow [2024-06-14 13:04:06,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:04:06,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:04:06,431 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:04:06,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-14 13:04:06,431 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:04:06,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:04:06,432 INFO L85 PathProgramCache]: Analyzing trace with hash 449236430, now seen corresponding path program 6 times [2024-06-14 13:04:06,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:04:06,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344480706] [2024-06-14 13:04:06,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:04:06,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:04:06,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:04:07,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:04:07,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:04:07,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344480706] [2024-06-14 13:04:07,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344480706] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:04:07,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:04:07,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:04:07,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122124149] [2024-06-14 13:04:07,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:04:07,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:04:07,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:04:07,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:04:07,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:04:07,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:04:07,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 430 transitions, 6339 flow. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:04:07,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:04:07,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:04:07,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:04:08,846 INFO L124 PetriNetUnfolderBase]: 4267/6664 cut-off events. [2024-06-14 13:04:08,846 INFO L125 PetriNetUnfolderBase]: For 532608/532608 co-relation queries the response was YES. [2024-06-14 13:04:08,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49756 conditions, 6664 events. 4267/6664 cut-off events. For 532608/532608 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 39686 event pairs, 1074 based on Foata normal form. 2/6664 useless extension candidates. Maximal degree in co-relation 49597. Up to 6622 conditions per place. [2024-06-14 13:04:08,938 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 426 selfloop transitions, 19 changer transitions 0/448 dead transitions. [2024-06-14 13:04:08,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 448 transitions, 7351 flow [2024-06-14 13:04:08,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:04:08,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:04:08,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 103 transitions. [2024-06-14 13:04:08,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3588850174216028 [2024-06-14 13:04:08,940 INFO L175 Difference]: Start difference. First operand has 324 places, 430 transitions, 6339 flow. Second operand 7 states and 103 transitions. [2024-06-14 13:04:08,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 448 transitions, 7351 flow [2024-06-14 13:04:10,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 448 transitions, 7224 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-14 13:04:10,918 INFO L231 Difference]: Finished difference. Result has 327 places, 436 transitions, 6354 flow [2024-06-14 13:04:10,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6212, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6354, PETRI_PLACES=327, PETRI_TRANSITIONS=436} [2024-06-14 13:04:10,919 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 285 predicate places. [2024-06-14 13:04:10,919 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 436 transitions, 6354 flow [2024-06-14 13:04:10,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:04:10,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:04:10,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:04:10,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-14 13:04:10,920 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:04:10,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:04:10,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1658475272, now seen corresponding path program 1 times [2024-06-14 13:04:10,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:04:10,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358822239] [2024-06-14 13:04:10,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:04:10,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:04:10,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:04:11,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:04:11,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:04:11,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358822239] [2024-06-14 13:04:11,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358822239] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:04:11,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:04:11,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:04:11,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154295040] [2024-06-14 13:04:11,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:04:11,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:04:11,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:04:11,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:04:11,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:04:11,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:04:11,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 436 transitions, 6354 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:04:11,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:04:11,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:04:11,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:04:13,420 INFO L124 PetriNetUnfolderBase]: 4287/6693 cut-off events. [2024-06-14 13:04:13,421 INFO L125 PetriNetUnfolderBase]: For 525884/525886 co-relation queries the response was YES. [2024-06-14 13:04:13,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49712 conditions, 6693 events. 4287/6693 cut-off events. For 525884/525886 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 39824 event pairs, 1090 based on Foata normal form. 6/6697 useless extension candidates. Maximal degree in co-relation 49551. Up to 6564 conditions per place. [2024-06-14 13:04:13,533 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 424 selfloop transitions, 33 changer transitions 0/460 dead transitions. [2024-06-14 13:04:13,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 460 transitions, 7562 flow [2024-06-14 13:04:13,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:04:13,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:04:13,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 114 transitions. [2024-06-14 13:04:13,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.397212543554007 [2024-06-14 13:04:13,534 INFO L175 Difference]: Start difference. First operand has 327 places, 436 transitions, 6354 flow. Second operand 7 states and 114 transitions. [2024-06-14 13:04:13,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 460 transitions, 7562 flow [2024-06-14 13:04:16,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 460 transitions, 7532 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-06-14 13:04:16,016 INFO L231 Difference]: Finished difference. Result has 332 places, 442 transitions, 6494 flow [2024-06-14 13:04:16,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6324, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6494, PETRI_PLACES=332, PETRI_TRANSITIONS=442} [2024-06-14 13:04:16,016 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 290 predicate places. [2024-06-14 13:04:16,017 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 442 transitions, 6494 flow [2024-06-14 13:04:16,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:04:16,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:04:16,017 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:04:16,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-14 13:04:16,017 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:04:16,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:04:16,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1903950838, now seen corresponding path program 2 times [2024-06-14 13:04:16,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:04:16,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047380709] [2024-06-14 13:04:16,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:04:16,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:04:16,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:04:16,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:04:16,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:04:16,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047380709] [2024-06-14 13:04:16,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047380709] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:04:16,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:04:16,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:04:16,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823403319] [2024-06-14 13:04:16,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:04:16,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:04:16,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:04:16,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:04:16,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:04:16,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:04:16,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 442 transitions, 6494 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:04:16,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:04:16,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:04:16,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:04:18,412 INFO L124 PetriNetUnfolderBase]: 4307/6721 cut-off events. [2024-06-14 13:04:18,412 INFO L125 PetriNetUnfolderBase]: For 541736/541738 co-relation queries the response was YES. [2024-06-14 13:04:18,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50503 conditions, 6721 events. 4307/6721 cut-off events. For 541736/541738 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 39978 event pairs, 1084 based on Foata normal form. 6/6725 useless extension candidates. Maximal degree in co-relation 50340. Up to 6604 conditions per place. [2024-06-14 13:04:18,518 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 427 selfloop transitions, 31 changer transitions 0/461 dead transitions. [2024-06-14 13:04:18,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 461 transitions, 7660 flow [2024-06-14 13:04:18,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 13:04:18,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 13:04:18,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 102 transitions. [2024-06-14 13:04:18,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4146341463414634 [2024-06-14 13:04:18,520 INFO L175 Difference]: Start difference. First operand has 332 places, 442 transitions, 6494 flow. Second operand 6 states and 102 transitions. [2024-06-14 13:04:18,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 461 transitions, 7660 flow [2024-06-14 13:04:21,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 461 transitions, 7545 flow, removed 38 selfloop flow, removed 4 redundant places. [2024-06-14 13:04:21,092 INFO L231 Difference]: Finished difference. Result has 334 places, 445 transitions, 6499 flow [2024-06-14 13:04:21,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6395, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6499, PETRI_PLACES=334, PETRI_TRANSITIONS=445} [2024-06-14 13:04:21,092 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 292 predicate places. [2024-06-14 13:04:21,092 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 445 transitions, 6499 flow [2024-06-14 13:04:21,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:04:21,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:04:21,093 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:04:21,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-14 13:04:21,093 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:04:21,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:04:21,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1903956418, now seen corresponding path program 3 times [2024-06-14 13:04:21,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:04:21,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883614702] [2024-06-14 13:04:21,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:04:21,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:04:21,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:04:21,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:04:21,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:04:21,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883614702] [2024-06-14 13:04:21,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883614702] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:04:21,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:04:21,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:04:21,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302932045] [2024-06-14 13:04:21,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:04:21,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:04:21,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:04:21,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:04:21,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:04:21,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:04:21,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 445 transitions, 6499 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:04:21,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:04:21,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:04:21,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:04:23,570 INFO L124 PetriNetUnfolderBase]: 4295/6705 cut-off events. [2024-06-14 13:04:23,570 INFO L125 PetriNetUnfolderBase]: For 541584/541586 co-relation queries the response was YES. [2024-06-14 13:04:23,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50064 conditions, 6705 events. 4295/6705 cut-off events. For 541584/541586 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 39914 event pairs, 1080 based on Foata normal form. 6/6709 useless extension candidates. Maximal degree in co-relation 49900. Up to 6596 conditions per place. [2024-06-14 13:04:23,675 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 427 selfloop transitions, 33 changer transitions 0/463 dead transitions. [2024-06-14 13:04:23,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 463 transitions, 7471 flow [2024-06-14 13:04:23,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:04:23,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:04:23,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 123 transitions. [2024-06-14 13:04:23,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-14 13:04:23,676 INFO L175 Difference]: Start difference. First operand has 334 places, 445 transitions, 6499 flow. Second operand 8 states and 123 transitions. [2024-06-14 13:04:23,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 463 transitions, 7471 flow [2024-06-14 13:04:25,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 463 transitions, 7377 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-06-14 13:04:25,462 INFO L231 Difference]: Finished difference. Result has 338 places, 445 transitions, 6478 flow [2024-06-14 13:04:25,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6405, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6478, PETRI_PLACES=338, PETRI_TRANSITIONS=445} [2024-06-14 13:04:25,463 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 296 predicate places. [2024-06-14 13:04:25,463 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 445 transitions, 6478 flow [2024-06-14 13:04:25,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:04:25,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:04:25,463 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:04:25,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-14 13:04:25,463 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:04:25,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:04:25,464 INFO L85 PathProgramCache]: Analyzing trace with hash 336915805, now seen corresponding path program 1 times [2024-06-14 13:04:25,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:04:25,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197696034] [2024-06-14 13:04:25,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:04:25,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:04:25,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:04:26,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:04:26,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:04:26,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197696034] [2024-06-14 13:04:26,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197696034] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:04:26,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:04:26,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:04:26,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705722906] [2024-06-14 13:04:26,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:04:26,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:04:26,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:04:26,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:04:26,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:04:26,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:04:26,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 445 transitions, 6478 flow. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:04:26,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:04:26,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:04:26,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:04:27,915 INFO L124 PetriNetUnfolderBase]: 4329/6748 cut-off events. [2024-06-14 13:04:27,915 INFO L125 PetriNetUnfolderBase]: For 555869/555877 co-relation queries the response was YES. [2024-06-14 13:04:28,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50759 conditions, 6748 events. 4329/6748 cut-off events. For 555869/555877 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 40224 event pairs, 985 based on Foata normal form. 8/6754 useless extension candidates. Maximal degree in co-relation 50594. Up to 6536 conditions per place. [2024-06-14 13:04:28,075 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 427 selfloop transitions, 56 changer transitions 0/486 dead transitions. [2024-06-14 13:04:28,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 486 transitions, 8036 flow [2024-06-14 13:04:28,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:04:28,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:04:28,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 135 transitions. [2024-06-14 13:04:28,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4115853658536585 [2024-06-14 13:04:28,077 INFO L175 Difference]: Start difference. First operand has 338 places, 445 transitions, 6478 flow. Second operand 8 states and 135 transitions. [2024-06-14 13:04:28,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 486 transitions, 8036 flow [2024-06-14 13:04:29,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 486 transitions, 7950 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-14 13:04:29,893 INFO L231 Difference]: Finished difference. Result has 341 places, 459 transitions, 6747 flow [2024-06-14 13:04:29,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6398, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6747, PETRI_PLACES=341, PETRI_TRANSITIONS=459} [2024-06-14 13:04:29,893 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 299 predicate places. [2024-06-14 13:04:29,894 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 459 transitions, 6747 flow [2024-06-14 13:04:29,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:04:29,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:04:29,894 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:04:29,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-14 13:04:29,894 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:04:29,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:04:29,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1949015075, now seen corresponding path program 2 times [2024-06-14 13:04:29,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:04:29,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384073321] [2024-06-14 13:04:29,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:04:29,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:04:29,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:04:30,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:04:30,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:04:30,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384073321] [2024-06-14 13:04:30,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384073321] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:04:30,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:04:30,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:04:30,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890193528] [2024-06-14 13:04:30,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:04:30,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:04:30,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:04:30,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:04:30,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:04:30,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:04:30,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 459 transitions, 6747 flow. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:04:30,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:04:30,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:04:30,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:04:32,342 INFO L124 PetriNetUnfolderBase]: 4344/6769 cut-off events. [2024-06-14 13:04:32,342 INFO L125 PetriNetUnfolderBase]: For 573156/573164 co-relation queries the response was YES. [2024-06-14 13:04:32,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51922 conditions, 6769 events. 4344/6769 cut-off events. For 573156/573164 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 40323 event pairs, 1051 based on Foata normal form. 10/6777 useless extension candidates. Maximal degree in co-relation 51754. Up to 6661 conditions per place. [2024-06-14 13:04:32,441 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 437 selfloop transitions, 45 changer transitions 0/485 dead transitions. [2024-06-14 13:04:32,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 485 transitions, 7870 flow [2024-06-14 13:04:32,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:04:32,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:04:32,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 125 transitions. [2024-06-14 13:04:32,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38109756097560976 [2024-06-14 13:04:32,443 INFO L175 Difference]: Start difference. First operand has 341 places, 459 transitions, 6747 flow. Second operand 8 states and 125 transitions. [2024-06-14 13:04:32,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 485 transitions, 7870 flow [2024-06-14 13:04:34,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 485 transitions, 7762 flow, removed 45 selfloop flow, removed 2 redundant places. [2024-06-14 13:04:34,342 INFO L231 Difference]: Finished difference. Result has 347 places, 465 transitions, 6844 flow [2024-06-14 13:04:34,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6658, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=459, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6844, PETRI_PLACES=347, PETRI_TRANSITIONS=465} [2024-06-14 13:04:34,343 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 305 predicate places. [2024-06-14 13:04:34,343 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 465 transitions, 6844 flow [2024-06-14 13:04:34,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:04:34,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:04:34,343 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:04:34,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-14 13:04:34,343 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:04:34,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:04:34,344 INFO L85 PathProgramCache]: Analyzing trace with hash 514167295, now seen corresponding path program 3 times [2024-06-14 13:04:34,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:04:34,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622155609] [2024-06-14 13:04:34,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:04:34,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:04:34,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:04:35,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:04:35,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:04:35,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622155609] [2024-06-14 13:04:35,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622155609] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:04:35,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:04:35,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:04:35,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99866248] [2024-06-14 13:04:35,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:04:35,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:04:35,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:04:35,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:04:35,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:04:35,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:04:35,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 465 transitions, 6844 flow. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:04:35,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:04:35,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:04:35,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:04:36,859 INFO L124 PetriNetUnfolderBase]: 4370/6805 cut-off events. [2024-06-14 13:04:36,859 INFO L125 PetriNetUnfolderBase]: For 594066/594074 co-relation queries the response was YES. [2024-06-14 13:04:36,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52509 conditions, 6805 events. 4370/6805 cut-off events. For 594066/594074 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 40549 event pairs, 1053 based on Foata normal form. 10/6813 useless extension candidates. Maximal degree in co-relation 52338. Up to 6682 conditions per place. [2024-06-14 13:04:36,968 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 437 selfloop transitions, 51 changer transitions 0/491 dead transitions. [2024-06-14 13:04:36,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 491 transitions, 8144 flow [2024-06-14 13:04:36,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:04:36,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:04:36,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 135 transitions. [2024-06-14 13:04:36,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36585365853658536 [2024-06-14 13:04:36,970 INFO L175 Difference]: Start difference. First operand has 347 places, 465 transitions, 6844 flow. Second operand 9 states and 135 transitions. [2024-06-14 13:04:36,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 491 transitions, 8144 flow [2024-06-14 13:04:39,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 491 transitions, 8050 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-06-14 13:04:39,688 INFO L231 Difference]: Finished difference. Result has 353 places, 471 transitions, 6984 flow [2024-06-14 13:04:39,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6750, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=465, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6984, PETRI_PLACES=353, PETRI_TRANSITIONS=471} [2024-06-14 13:04:39,689 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 311 predicate places. [2024-06-14 13:04:39,689 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 471 transitions, 6984 flow [2024-06-14 13:04:39,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:04:39,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:04:39,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:04:39,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-14 13:04:39,690 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:04:39,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:04:39,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1771637291, now seen corresponding path program 1 times [2024-06-14 13:04:39,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:04:39,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332669725] [2024-06-14 13:04:39,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:04:39,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:04:39,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:04:40,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:04:40,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:04:40,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332669725] [2024-06-14 13:04:40,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332669725] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:04:40,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:04:40,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:04:40,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016915430] [2024-06-14 13:04:40,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:04:40,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:04:40,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:04:40,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:04:40,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:04:40,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-14 13:04:40,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 471 transitions, 6984 flow. Second operand has 10 states, 10 states have (on average 9.7) internal successors, (97), 10 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:04:40,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:04:40,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-14 13:04:40,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:04:42,418 INFO L124 PetriNetUnfolderBase]: 4264/6683 cut-off events. [2024-06-14 13:04:42,419 INFO L125 PetriNetUnfolderBase]: For 613783/613791 co-relation queries the response was YES. [2024-06-14 13:04:42,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51975 conditions, 6683 events. 4264/6683 cut-off events. For 613783/613791 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 40223 event pairs, 1007 based on Foata normal form. 8/6651 useless extension candidates. Maximal degree in co-relation 51802. Up to 6354 conditions per place. [2024-06-14 13:04:42,515 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 359 selfloop transitions, 79 changer transitions 0/492 dead transitions. [2024-06-14 13:04:42,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 492 transitions, 7946 flow [2024-06-14 13:04:42,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:04:42,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:04:42,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 130 transitions. [2024-06-14 13:04:42,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39634146341463417 [2024-06-14 13:04:42,517 INFO L175 Difference]: Start difference. First operand has 353 places, 471 transitions, 6984 flow. Second operand 8 states and 130 transitions. [2024-06-14 13:04:42,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 492 transitions, 7946 flow [2024-06-14 13:04:44,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 492 transitions, 7804 flow, removed 31 selfloop flow, removed 5 redundant places. [2024-06-14 13:04:44,917 INFO L231 Difference]: Finished difference. Result has 356 places, 473 transitions, 7046 flow [2024-06-14 13:04:44,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6842, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=392, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7046, PETRI_PLACES=356, PETRI_TRANSITIONS=473} [2024-06-14 13:04:44,918 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 314 predicate places. [2024-06-14 13:04:44,918 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 473 transitions, 7046 flow [2024-06-14 13:04:44,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.7) internal successors, (97), 10 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:04:44,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:04:44,918 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:04:44,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-14 13:04:44,918 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:04:44,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:04:44,919 INFO L85 PathProgramCache]: Analyzing trace with hash 502554939, now seen corresponding path program 4 times [2024-06-14 13:04:44,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:04:44,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110555543] [2024-06-14 13:04:44,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:04:44,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:04:44,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:04:45,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:04:45,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:04:45,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110555543] [2024-06-14 13:04:45,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110555543] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:04:45,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:04:45,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:04:45,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143277675] [2024-06-14 13:04:45,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:04:45,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:04:45,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:04:45,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:04:45,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:04:45,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:04:45,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 473 transitions, 7046 flow. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:04:45,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:04:45,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:04:45,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:04:47,329 INFO L124 PetriNetUnfolderBase]: 4412/6865 cut-off events. [2024-06-14 13:04:47,330 INFO L125 PetriNetUnfolderBase]: For 630307/630315 co-relation queries the response was YES. [2024-06-14 13:04:47,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53618 conditions, 6865 events. 4412/6865 cut-off events. For 630307/630315 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 40893 event pairs, 987 based on Foata normal form. 8/6871 useless extension candidates. Maximal degree in co-relation 53445. Up to 6624 conditions per place. [2024-06-14 13:04:47,421 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 426 selfloop transitions, 73 changer transitions 0/502 dead transitions. [2024-06-14 13:04:47,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 502 transitions, 8562 flow [2024-06-14 13:04:47,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:04:47,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:04:47,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 120 transitions. [2024-06-14 13:04:47,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4181184668989547 [2024-06-14 13:04:47,423 INFO L175 Difference]: Start difference. First operand has 356 places, 473 transitions, 7046 flow. Second operand 7 states and 120 transitions. [2024-06-14 13:04:47,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 502 transitions, 8562 flow [2024-06-14 13:04:49,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 502 transitions, 8395 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-14 13:04:49,872 INFO L231 Difference]: Finished difference. Result has 358 places, 479 transitions, 7155 flow [2024-06-14 13:04:49,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6879, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=473, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7155, PETRI_PLACES=358, PETRI_TRANSITIONS=479} [2024-06-14 13:04:49,872 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 316 predicate places. [2024-06-14 13:04:49,872 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 479 transitions, 7155 flow [2024-06-14 13:04:49,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:04:49,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:04:49,873 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:04:49,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-14 13:04:49,873 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:04:49,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:04:49,873 INFO L85 PathProgramCache]: Analyzing trace with hash -543725121, now seen corresponding path program 5 times [2024-06-14 13:04:49,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:04:49,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934398966] [2024-06-14 13:04:49,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:04:49,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:04:49,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:04:50,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:04:50,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:04:50,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934398966] [2024-06-14 13:04:50,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934398966] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:04:50,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:04:50,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:04:50,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051014223] [2024-06-14 13:04:50,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:04:50,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:04:50,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:04:50,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:04:50,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:04:50,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:04:50,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 479 transitions, 7155 flow. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:04:50,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:04:50,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:04:50,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:04:52,471 INFO L124 PetriNetUnfolderBase]: 4406/6857 cut-off events. [2024-06-14 13:04:52,472 INFO L125 PetriNetUnfolderBase]: For 637159/637167 co-relation queries the response was YES. [2024-06-14 13:04:52,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53553 conditions, 6857 events. 4406/6857 cut-off events. For 637159/637167 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 40909 event pairs, 1055 based on Foata normal form. 10/6865 useless extension candidates. Maximal degree in co-relation 53379. Up to 6737 conditions per place. [2024-06-14 13:04:52,557 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 443 selfloop transitions, 49 changer transitions 0/495 dead transitions. [2024-06-14 13:04:52,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 495 transitions, 8185 flow [2024-06-14 13:04:52,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:04:52,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:04:52,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 111 transitions. [2024-06-14 13:04:52,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3867595818815331 [2024-06-14 13:04:52,559 INFO L175 Difference]: Start difference. First operand has 358 places, 479 transitions, 7155 flow. Second operand 7 states and 111 transitions. [2024-06-14 13:04:52,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 495 transitions, 8185 flow [2024-06-14 13:04:55,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 495 transitions, 8019 flow, removed 45 selfloop flow, removed 4 redundant places. [2024-06-14 13:04:55,129 INFO L231 Difference]: Finished difference. Result has 361 places, 479 transitions, 7101 flow [2024-06-14 13:04:55,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6989, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=430, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7101, PETRI_PLACES=361, PETRI_TRANSITIONS=479} [2024-06-14 13:04:55,130 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 319 predicate places. [2024-06-14 13:04:55,130 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 479 transitions, 7101 flow [2024-06-14 13:04:55,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:04:55,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:04:55,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:04:55,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-14 13:04:55,130 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:04:55,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:04:55,131 INFO L85 PathProgramCache]: Analyzing trace with hash -315943941, now seen corresponding path program 6 times [2024-06-14 13:04:55,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:04:55,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529939349] [2024-06-14 13:04:55,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:04:55,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:04:55,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:04:55,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:04:55,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:04:55,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529939349] [2024-06-14 13:04:55,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529939349] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:04:55,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:04:55,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:04:55,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316754811] [2024-06-14 13:04:55,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:04:55,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:04:55,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:04:55,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:04:55,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:04:55,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:04:55,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 479 transitions, 7101 flow. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:04:55,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:04:55,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:04:55,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:04:57,398 INFO L124 PetriNetUnfolderBase]: 4416/6875 cut-off events. [2024-06-14 13:04:57,398 INFO L125 PetriNetUnfolderBase]: For 638962/638964 co-relation queries the response was YES. [2024-06-14 13:04:57,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53453 conditions, 6875 events. 4416/6875 cut-off events. For 638962/638964 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 40987 event pairs, 1083 based on Foata normal form. 4/6877 useless extension candidates. Maximal degree in co-relation 53279. Up to 6786 conditions per place. [2024-06-14 13:04:57,501 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 470 selfloop transitions, 27 changer transitions 0/500 dead transitions. [2024-06-14 13:04:57,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 500 transitions, 8370 flow [2024-06-14 13:04:57,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:04:57,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:04:57,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 112 transitions. [2024-06-14 13:04:57,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3902439024390244 [2024-06-14 13:04:57,502 INFO L175 Difference]: Start difference. First operand has 361 places, 479 transitions, 7101 flow. Second operand 7 states and 112 transitions. [2024-06-14 13:04:57,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 500 transitions, 8370 flow [2024-06-14 13:05:00,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 500 transitions, 8294 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-14 13:05:00,217 INFO L231 Difference]: Finished difference. Result has 363 places, 482 transitions, 7142 flow [2024-06-14 13:05:00,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7025, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=455, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7142, PETRI_PLACES=363, PETRI_TRANSITIONS=482} [2024-06-14 13:05:00,218 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 321 predicate places. [2024-06-14 13:05:00,218 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 482 transitions, 7142 flow [2024-06-14 13:05:00,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:05:00,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:05:00,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:05:00,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-14 13:05:00,219 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:05:00,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:05:00,219 INFO L85 PathProgramCache]: Analyzing trace with hash -304516101, now seen corresponding path program 7 times [2024-06-14 13:05:00,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:05:00,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203587956] [2024-06-14 13:05:00,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:05:00,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:05:00,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:05:00,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:05:00,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:05:00,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203587956] [2024-06-14 13:05:00,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203587956] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:05:00,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:05:00,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:05:00,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822425964] [2024-06-14 13:05:00,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:05:00,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:05:00,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:05:00,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:05:00,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:05:00,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:05:00,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 482 transitions, 7142 flow. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:05:00,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:05:00,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:05:00,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:05:02,489 INFO L124 PetriNetUnfolderBase]: 4426/6889 cut-off events. [2024-06-14 13:05:02,490 INFO L125 PetriNetUnfolderBase]: For 653201/653203 co-relation queries the response was YES. [2024-06-14 13:05:02,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53723 conditions, 6889 events. 4426/6889 cut-off events. For 653201/653203 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 41110 event pairs, 1090 based on Foata normal form. 4/6891 useless extension candidates. Maximal degree in co-relation 53548. Up to 6831 conditions per place. [2024-06-14 13:05:02,592 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 473 selfloop transitions, 23 changer transitions 0/499 dead transitions. [2024-06-14 13:05:02,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 499 transitions, 8242 flow [2024-06-14 13:05:02,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:05:02,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:05:02,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 106 transitions. [2024-06-14 13:05:02,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3693379790940767 [2024-06-14 13:05:02,593 INFO L175 Difference]: Start difference. First operand has 363 places, 482 transitions, 7142 flow. Second operand 7 states and 106 transitions. [2024-06-14 13:05:02,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 499 transitions, 8242 flow [2024-06-14 13:05:05,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 499 transitions, 8088 flow, removed 29 selfloop flow, removed 5 redundant places. [2024-06-14 13:05:05,244 INFO L231 Difference]: Finished difference. Result has 365 places, 486 transitions, 7118 flow [2024-06-14 13:05:05,244 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7004, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=482, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7118, PETRI_PLACES=365, PETRI_TRANSITIONS=486} [2024-06-14 13:05:05,244 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 323 predicate places. [2024-06-14 13:05:05,244 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 486 transitions, 7118 flow [2024-06-14 13:05:05,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:05:05,245 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:05:05,245 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:05:05,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-14 13:05:05,245 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:05:05,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:05:05,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1107315747, now seen corresponding path program 8 times [2024-06-14 13:05:05,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:05:05,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943921557] [2024-06-14 13:05:05,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:05:05,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:05:05,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:05:05,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:05:05,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:05:05,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943921557] [2024-06-14 13:05:05,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943921557] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:05:05,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:05:05,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:05:05,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837248670] [2024-06-14 13:05:05,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:05:05,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:05:05,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:05:06,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:05:06,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:05:06,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:05:06,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 486 transitions, 7118 flow. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:05:06,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:05:06,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:05:06,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:05:07,742 INFO L124 PetriNetUnfolderBase]: 4414/6869 cut-off events. [2024-06-14 13:05:07,742 INFO L125 PetriNetUnfolderBase]: For 657068/657076 co-relation queries the response was YES. [2024-06-14 13:05:07,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53293 conditions, 6869 events. 4414/6869 cut-off events. For 657068/657076 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 41006 event pairs, 977 based on Foata normal form. 12/6879 useless extension candidates. Maximal degree in co-relation 53118. Up to 6697 conditions per place. [2024-06-14 13:05:07,854 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 455 selfloop transitions, 52 changer transitions 0/510 dead transitions. [2024-06-14 13:05:07,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 510 transitions, 8372 flow [2024-06-14 13:05:07,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:05:07,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:05:07,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 121 transitions. [2024-06-14 13:05:07,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42160278745644597 [2024-06-14 13:05:07,855 INFO L175 Difference]: Start difference. First operand has 365 places, 486 transitions, 7118 flow. Second operand 7 states and 121 transitions. [2024-06-14 13:05:07,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 510 transitions, 8372 flow [2024-06-14 13:05:10,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 510 transitions, 8244 flow, removed 44 selfloop flow, removed 4 redundant places. [2024-06-14 13:05:10,867 INFO L231 Difference]: Finished difference. Result has 368 places, 486 transitions, 7112 flow [2024-06-14 13:05:10,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6990, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=434, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7112, PETRI_PLACES=368, PETRI_TRANSITIONS=486} [2024-06-14 13:05:10,868 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 326 predicate places. [2024-06-14 13:05:10,868 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 486 transitions, 7112 flow [2024-06-14 13:05:10,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:05:10,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:05:10,868 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:05:10,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-14 13:05:10,868 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:05:10,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:05:10,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1107078597, now seen corresponding path program 9 times [2024-06-14 13:05:10,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:05:10,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150557892] [2024-06-14 13:05:10,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:05:10,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:05:10,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:05:11,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:05:11,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:05:11,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150557892] [2024-06-14 13:05:11,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150557892] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:05:11,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:05:11,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:05:11,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287301035] [2024-06-14 13:05:11,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:05:11,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:05:11,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:05:11,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:05:11,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:05:11,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:05:11,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 486 transitions, 7112 flow. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:05:11,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:05:11,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:05:11,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:05:13,239 INFO L124 PetriNetUnfolderBase]: 4408/6865 cut-off events. [2024-06-14 13:05:13,240 INFO L125 PetriNetUnfolderBase]: For 658123/658125 co-relation queries the response was YES. [2024-06-14 13:05:13,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53273 conditions, 6865 events. 4408/6865 cut-off events. For 658123/658125 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 40987 event pairs, 1078 based on Foata normal form. 4/6867 useless extension candidates. Maximal degree in co-relation 53097. Up to 6792 conditions per place. [2024-06-14 13:05:13,345 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 475 selfloop transitions, 23 changer transitions 0/501 dead transitions. [2024-06-14 13:05:13,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 501 transitions, 8150 flow [2024-06-14 13:05:13,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 13:05:13,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 13:05:13,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 99 transitions. [2024-06-14 13:05:13,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4024390243902439 [2024-06-14 13:05:13,346 INFO L175 Difference]: Start difference. First operand has 368 places, 486 transitions, 7112 flow. Second operand 6 states and 99 transitions. [2024-06-14 13:05:13,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 501 transitions, 8150 flow [2024-06-14 13:05:16,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 501 transitions, 8000 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-14 13:05:16,092 INFO L231 Difference]: Finished difference. Result has 367 places, 486 transitions, 7018 flow [2024-06-14 13:05:16,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6962, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=463, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=7018, PETRI_PLACES=367, PETRI_TRANSITIONS=486} [2024-06-14 13:05:16,093 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 325 predicate places. [2024-06-14 13:05:16,093 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 486 transitions, 7018 flow [2024-06-14 13:05:16,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:05:16,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:05:16,093 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:05:16,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-14 13:05:16,093 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:05:16,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:05:16,094 INFO L85 PathProgramCache]: Analyzing trace with hash 483007715, now seen corresponding path program 1 times [2024-06-14 13:05:16,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:05:16,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543220223] [2024-06-14 13:05:16,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:05:16,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:05:16,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:05:17,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:05:17,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:05:17,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543220223] [2024-06-14 13:05:17,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543220223] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:05:17,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:05:17,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:05:17,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969579605] [2024-06-14 13:05:17,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:05:17,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:05:17,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:05:17,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:05:17,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:05:17,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:05:17,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 486 transitions, 7018 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:05:17,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:05:17,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:05:17,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:05:18,968 INFO L124 PetriNetUnfolderBase]: 4383/6821 cut-off events. [2024-06-14 13:05:18,969 INFO L125 PetriNetUnfolderBase]: For 649549/649549 co-relation queries the response was YES. [2024-06-14 13:05:19,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52716 conditions, 6821 events. 4383/6821 cut-off events. For 649549/649549 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 40593 event pairs, 1064 based on Foata normal form. 1/6820 useless extension candidates. Maximal degree in co-relation 52541. Up to 6773 conditions per place. [2024-06-14 13:05:19,077 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 471 selfloop transitions, 24 changer transitions 0/498 dead transitions. [2024-06-14 13:05:19,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 498 transitions, 8050 flow [2024-06-14 13:05:19,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:05:19,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:05:19,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 103 transitions. [2024-06-14 13:05:19,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3588850174216028 [2024-06-14 13:05:19,079 INFO L175 Difference]: Start difference. First operand has 367 places, 486 transitions, 7018 flow. Second operand 7 states and 103 transitions. [2024-06-14 13:05:19,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 498 transitions, 8050 flow [2024-06-14 13:05:21,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 498 transitions, 7944 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-14 13:05:21,758 INFO L231 Difference]: Finished difference. Result has 366 places, 486 transitions, 6970 flow [2024-06-14 13:05:21,761 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6912, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=462, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6970, PETRI_PLACES=366, PETRI_TRANSITIONS=486} [2024-06-14 13:05:21,761 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 324 predicate places. [2024-06-14 13:05:21,761 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 486 transitions, 6970 flow [2024-06-14 13:05:21,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:05:21,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:05:21,761 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:05:21,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-14 13:05:21,762 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:05:21,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:05:21,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1041845043, now seen corresponding path program 2 times [2024-06-14 13:05:21,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:05:21,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885978334] [2024-06-14 13:05:21,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:05:21,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:05:21,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:05:22,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:05:22,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:05:22,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885978334] [2024-06-14 13:05:22,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885978334] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:05:22,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:05:22,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:05:22,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500881127] [2024-06-14 13:05:22,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:05:22,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:05:22,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:05:22,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:05:22,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:05:22,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-14 13:05:22,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 486 transitions, 6970 flow. Second operand has 10 states, 10 states have (on average 9.7) internal successors, (97), 10 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:05:22,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:05:22,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-14 13:05:22,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:05:24,407 INFO L124 PetriNetUnfolderBase]: 4267/6692 cut-off events. [2024-06-14 13:05:24,408 INFO L125 PetriNetUnfolderBase]: For 644792/644796 co-relation queries the response was YES. [2024-06-14 13:05:24,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51598 conditions, 6692 events. 4267/6692 cut-off events. For 644792/644796 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 40316 event pairs, 1041 based on Foata normal form. 4/6662 useless extension candidates. Maximal degree in co-relation 51424. Up to 6459 conditions per place. [2024-06-14 13:05:24,519 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 408 selfloop transitions, 37 changer transitions 0/499 dead transitions. [2024-06-14 13:05:24,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 499 transitions, 7926 flow [2024-06-14 13:05:24,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:05:24,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:05:24,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 108 transitions. [2024-06-14 13:05:24,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37630662020905925 [2024-06-14 13:05:24,520 INFO L175 Difference]: Start difference. First operand has 366 places, 486 transitions, 6970 flow. Second operand 7 states and 108 transitions. [2024-06-14 13:05:24,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 499 transitions, 7926 flow [2024-06-14 13:05:26,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 499 transitions, 7708 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-14 13:05:26,969 INFO L231 Difference]: Finished difference. Result has 366 places, 488 transitions, 6878 flow [2024-06-14 13:05:26,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6752, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=449, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6878, PETRI_PLACES=366, PETRI_TRANSITIONS=488} [2024-06-14 13:05:26,969 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 324 predicate places. [2024-06-14 13:05:26,970 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 488 transitions, 6878 flow [2024-06-14 13:05:26,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.7) internal successors, (97), 10 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:05:26,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:05:26,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:05:26,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-14 13:05:26,970 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:05:26,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:05:26,970 INFO L85 PathProgramCache]: Analyzing trace with hash 69701269, now seen corresponding path program 3 times [2024-06-14 13:05:26,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:05:26,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156812873] [2024-06-14 13:05:26,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:05:26,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:05:26,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:05:28,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:05:28,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:05:28,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156812873] [2024-06-14 13:05:28,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156812873] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:05:28,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:05:28,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:05:28,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064222187] [2024-06-14 13:05:28,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:05:28,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:05:28,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:05:28,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:05:28,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:05:28,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-14 13:05:28,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 488 transitions, 6878 flow. Second operand has 10 states, 10 states have (on average 9.7) internal successors, (97), 10 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:05:28,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:05:28,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-14 13:05:28,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:05:29,595 INFO L124 PetriNetUnfolderBase]: 4293/6724 cut-off events. [2024-06-14 13:05:29,595 INFO L125 PetriNetUnfolderBase]: For 644195/644201 co-relation queries the response was YES. [2024-06-14 13:05:29,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51917 conditions, 6724 events. 4293/6724 cut-off events. For 644195/644201 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 40471 event pairs, 1007 based on Foata normal form. 8/6702 useless extension candidates. Maximal degree in co-relation 51744. Up to 6382 conditions per place. [2024-06-14 13:05:29,699 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 374 selfloop transitions, 80 changer transitions 0/508 dead transitions. [2024-06-14 13:05:29,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 508 transitions, 7878 flow [2024-06-14 13:05:29,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:05:29,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:05:29,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 118 transitions. [2024-06-14 13:05:29,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41114982578397213 [2024-06-14 13:05:29,700 INFO L175 Difference]: Start difference. First operand has 366 places, 488 transitions, 6878 flow. Second operand 7 states and 118 transitions. [2024-06-14 13:05:29,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 508 transitions, 7878 flow [2024-06-14 13:05:32,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 508 transitions, 7778 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-14 13:05:32,262 INFO L231 Difference]: Finished difference. Result has 368 places, 490 transitions, 6997 flow [2024-06-14 13:05:32,272 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6778, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=488, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6997, PETRI_PLACES=368, PETRI_TRANSITIONS=490} [2024-06-14 13:05:32,273 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 326 predicate places. [2024-06-14 13:05:32,273 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 490 transitions, 6997 flow [2024-06-14 13:05:32,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.7) internal successors, (97), 10 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:05:32,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:05:32,273 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:05:32,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-14 13:05:32,273 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:05:32,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:05:32,274 INFO L85 PathProgramCache]: Analyzing trace with hash 483483379, now seen corresponding path program 4 times [2024-06-14 13:05:32,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:05:32,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140034693] [2024-06-14 13:05:32,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:05:32,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:05:32,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:05:33,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:05:33,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:05:33,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140034693] [2024-06-14 13:05:33,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140034693] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:05:33,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:05:33,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:05:33,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400030035] [2024-06-14 13:05:33,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:05:33,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:05:33,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:05:33,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:05:33,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:05:33,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-14 13:05:33,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 490 transitions, 6997 flow. Second operand has 10 states, 10 states have (on average 9.7) internal successors, (97), 10 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:05:33,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:05:33,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-14 13:05:33,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:05:35,036 INFO L124 PetriNetUnfolderBase]: 4276/6707 cut-off events. [2024-06-14 13:05:35,037 INFO L125 PetriNetUnfolderBase]: For 645845/645852 co-relation queries the response was YES. [2024-06-14 13:05:35,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51703 conditions, 6707 events. 4276/6707 cut-off events. For 645845/645852 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 40442 event pairs, 1037 based on Foata normal form. 7/6684 useless extension candidates. Maximal degree in co-relation 51529. Up to 6486 conditions per place. [2024-06-14 13:05:35,205 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 426 selfloop transitions, 23 changer transitions 0/503 dead transitions. [2024-06-14 13:05:35,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 503 transitions, 7967 flow [2024-06-14 13:05:35,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:05:35,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:05:35,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 107 transitions. [2024-06-14 13:05:35,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37282229965156793 [2024-06-14 13:05:35,206 INFO L175 Difference]: Start difference. First operand has 368 places, 490 transitions, 6997 flow. Second operand 7 states and 107 transitions. [2024-06-14 13:05:35,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 503 transitions, 7967 flow [2024-06-14 13:05:37,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 503 transitions, 7774 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-14 13:05:37,680 INFO L231 Difference]: Finished difference. Result has 370 places, 492 transitions, 6905 flow [2024-06-14 13:05:37,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6808, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=490, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=467, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6905, PETRI_PLACES=370, PETRI_TRANSITIONS=492} [2024-06-14 13:05:37,680 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 328 predicate places. [2024-06-14 13:05:37,680 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 492 transitions, 6905 flow [2024-06-14 13:05:37,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.7) internal successors, (97), 10 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:05:37,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:05:37,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:05:37,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-14 13:05:37,681 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:05:37,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:05:37,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1001904357, now seen corresponding path program 1 times [2024-06-14 13:05:37,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:05:37,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9295980] [2024-06-14 13:05:37,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:05:37,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:05:37,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:05:38,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:05:38,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:05:38,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9295980] [2024-06-14 13:05:38,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9295980] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:05:38,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:05:38,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:05:38,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33553437] [2024-06-14 13:05:38,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:05:38,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:05:38,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:05:38,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:05:38,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:05:38,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:05:38,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 492 transitions, 6905 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:05:38,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:05:38,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:05:38,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:05:40,791 INFO L124 PetriNetUnfolderBase]: 4413/6868 cut-off events. [2024-06-14 13:05:40,792 INFO L125 PetriNetUnfolderBase]: For 638336/638338 co-relation queries the response was YES. [2024-06-14 13:05:40,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52551 conditions, 6868 events. 4413/6868 cut-off events. For 638336/638338 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 40940 event pairs, 1034 based on Foata normal form. 4/6870 useless extension candidates. Maximal degree in co-relation 52376. Up to 6762 conditions per place. [2024-06-14 13:05:40,896 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 481 selfloop transitions, 30 changer transitions 0/514 dead transitions. [2024-06-14 13:05:40,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 514 transitions, 8215 flow [2024-06-14 13:05:40,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:05:40,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:05:40,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 111 transitions. [2024-06-14 13:05:40,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3867595818815331 [2024-06-14 13:05:40,898 INFO L175 Difference]: Start difference. First operand has 370 places, 492 transitions, 6905 flow. Second operand 7 states and 111 transitions. [2024-06-14 13:05:40,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 514 transitions, 8215 flow [2024-06-14 13:05:43,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 514 transitions, 8134 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-14 13:05:43,403 INFO L231 Difference]: Finished difference. Result has 372 places, 496 transitions, 6965 flow [2024-06-14 13:05:43,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6824, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=492, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=464, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6965, PETRI_PLACES=372, PETRI_TRANSITIONS=496} [2024-06-14 13:05:43,403 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 330 predicate places. [2024-06-14 13:05:43,403 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 496 transitions, 6965 flow [2024-06-14 13:05:43,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:05:43,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:05:43,403 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:05:43,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-14 13:05:43,404 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:05:43,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:05:43,404 INFO L85 PathProgramCache]: Analyzing trace with hash -304622493, now seen corresponding path program 2 times [2024-06-14 13:05:43,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:05:43,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498742187] [2024-06-14 13:05:43,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:05:43,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:05:43,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:05:44,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:05:44,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:05:44,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498742187] [2024-06-14 13:05:44,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498742187] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:05:44,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:05:44,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:05:44,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618583101] [2024-06-14 13:05:44,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:05:44,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:05:44,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:05:44,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:05:44,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:05:44,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:05:44,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 496 transitions, 6965 flow. Second operand has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 11 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) [2024-06-14 13:05:44,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:05:44,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:05:44,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:05:46,576 INFO L124 PetriNetUnfolderBase]: 4421/6880 cut-off events. [2024-06-14 13:05:46,577 INFO L125 PetriNetUnfolderBase]: For 652093/652095 co-relation queries the response was YES. [2024-06-14 13:05:46,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52825 conditions, 6880 events. 4421/6880 cut-off events. For 652093/652095 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 41038 event pairs, 1073 based on Foata normal form. 4/6882 useless extension candidates. Maximal degree in co-relation 52649. Up to 6805 conditions per place. [2024-06-14 13:05:46,682 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 480 selfloop transitions, 28 changer transitions 0/511 dead transitions. [2024-06-14 13:05:46,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 511 transitions, 8053 flow [2024-06-14 13:05:46,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:05:46,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:05:46,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 107 transitions. [2024-06-14 13:05:46,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37282229965156793 [2024-06-14 13:05:46,684 INFO L175 Difference]: Start difference. First operand has 372 places, 496 transitions, 6965 flow. Second operand 7 states and 107 transitions. [2024-06-14 13:05:46,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 511 transitions, 8053 flow [2024-06-14 13:05:48,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 511 transitions, 7966 flow, removed 30 selfloop flow, removed 3 redundant places. [2024-06-14 13:05:48,704 INFO L231 Difference]: Finished difference. Result has 376 places, 498 transitions, 6983 flow [2024-06-14 13:05:48,704 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6892, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=496, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=468, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6983, PETRI_PLACES=376, PETRI_TRANSITIONS=498} [2024-06-14 13:05:48,705 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 334 predicate places. [2024-06-14 13:05:48,705 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 498 transitions, 6983 flow [2024-06-14 13:05:48,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 11 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) [2024-06-14 13:05:48,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:05:48,705 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:05:48,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-14 13:05:48,705 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:05:48,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:05:48,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1107069669, now seen corresponding path program 3 times [2024-06-14 13:05:48,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:05:48,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627568578] [2024-06-14 13:05:48,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:05:48,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:05:48,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:05:49,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:05:49,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:05:49,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627568578] [2024-06-14 13:05:49,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627568578] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:05:49,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:05:49,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:05:49,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614278203] [2024-06-14 13:05:49,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:05:49,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:05:49,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:05:49,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:05:49,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:05:50,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:05:50,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 498 transitions, 6983 flow. Second operand has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 11 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) [2024-06-14 13:05:50,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:05:50,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:05:50,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:05:51,577 INFO L124 PetriNetUnfolderBase]: 4416/6873 cut-off events. [2024-06-14 13:05:51,577 INFO L125 PetriNetUnfolderBase]: For 658310/658312 co-relation queries the response was YES. [2024-06-14 13:05:51,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52720 conditions, 6873 events. 4416/6873 cut-off events. For 658310/658312 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 40991 event pairs, 1033 based on Foata normal form. 4/6875 useless extension candidates. Maximal degree in co-relation 52542. Up to 6788 conditions per place. [2024-06-14 13:05:51,679 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 485 selfloop transitions, 25 changer transitions 0/513 dead transitions. [2024-06-14 13:05:51,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 513 transitions, 8041 flow [2024-06-14 13:05:51,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 13:05:51,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 13:05:51,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 99 transitions. [2024-06-14 13:05:51,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4024390243902439 [2024-06-14 13:05:51,681 INFO L175 Difference]: Start difference. First operand has 376 places, 498 transitions, 6983 flow. Second operand 6 states and 99 transitions. [2024-06-14 13:05:51,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 513 transitions, 8041 flow [2024-06-14 13:05:54,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 513 transitions, 7954 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-14 13:05:54,340 INFO L231 Difference]: Finished difference. Result has 377 places, 498 transitions, 6954 flow [2024-06-14 13:05:54,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6896, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=473, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6954, PETRI_PLACES=377, PETRI_TRANSITIONS=498} [2024-06-14 13:05:54,340 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 335 predicate places. [2024-06-14 13:05:54,340 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 498 transitions, 6954 flow [2024-06-14 13:05:54,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 11 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) [2024-06-14 13:05:54,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:05:54,341 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:05:54,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-14 13:05:54,341 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:05:54,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:05:54,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1725230763, now seen corresponding path program 1 times [2024-06-14 13:05:54,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:05:54,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450687930] [2024-06-14 13:05:54,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:05:54,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:05:54,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:05:55,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:05:55,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:05:55,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450687930] [2024-06-14 13:05:55,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450687930] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:05:55,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:05:55,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:05:55,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092189723] [2024-06-14 13:05:55,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:05:55,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:05:55,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:05:55,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:05:55,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:05:55,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:05:55,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 498 transitions, 6954 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:05:55,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:05:55,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:05:55,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:05:56,842 INFO L124 PetriNetUnfolderBase]: 4450/6916 cut-off events. [2024-06-14 13:05:56,842 INFO L125 PetriNetUnfolderBase]: For 684237/684245 co-relation queries the response was YES. [2024-06-14 13:05:56,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53606 conditions, 6916 events. 4450/6916 cut-off events. For 684237/684245 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 41229 event pairs, 916 based on Foata normal form. 8/6922 useless extension candidates. Maximal degree in co-relation 53427. Up to 6366 conditions per place. [2024-06-14 13:05:56,950 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 421 selfloop transitions, 118 changer transitions 0/542 dead transitions. [2024-06-14 13:05:56,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 542 transitions, 8722 flow [2024-06-14 13:05:56,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:05:56,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:05:56,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-14 13:05:56,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42276422764227645 [2024-06-14 13:05:56,952 INFO L175 Difference]: Start difference. First operand has 377 places, 498 transitions, 6954 flow. Second operand 9 states and 156 transitions. [2024-06-14 13:05:56,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 542 transitions, 8722 flow [2024-06-14 13:05:59,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 542 transitions, 8665 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-14 13:05:59,750 INFO L231 Difference]: Finished difference. Result has 381 places, 507 transitions, 7373 flow [2024-06-14 13:05:59,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6897, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7373, PETRI_PLACES=381, PETRI_TRANSITIONS=507} [2024-06-14 13:05:59,750 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 339 predicate places. [2024-06-14 13:05:59,750 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 507 transitions, 7373 flow [2024-06-14 13:05:59,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:05:59,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:05:59,751 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:05:59,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-14 13:05:59,751 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:05:59,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:05:59,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1725110793, now seen corresponding path program 2 times [2024-06-14 13:05:59,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:05:59,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428856647] [2024-06-14 13:05:59,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:05:59,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:05:59,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:06:00,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:06:00,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:06:00,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428856647] [2024-06-14 13:06:00,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428856647] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:06:00,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:06:00,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:06:00,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920178783] [2024-06-14 13:06:00,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:06:00,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:06:00,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:06:00,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:06:00,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:06:00,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:06:00,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 507 transitions, 7373 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:06:00,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:06:00,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:06:00,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:06:02,201 INFO L124 PetriNetUnfolderBase]: 4465/6937 cut-off events. [2024-06-14 13:06:02,201 INFO L125 PetriNetUnfolderBase]: For 703644/703652 co-relation queries the response was YES. [2024-06-14 13:06:02,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54716 conditions, 6937 events. 4465/6937 cut-off events. For 703644/703652 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 41469 event pairs, 1041 based on Foata normal form. 10/6945 useless extension candidates. Maximal degree in co-relation 54536. Up to 6726 conditions per place. [2024-06-14 13:06:02,300 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 465 selfloop transitions, 72 changer transitions 0/540 dead transitions. [2024-06-14 13:06:02,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 540 transitions, 8641 flow [2024-06-14 13:06:02,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:06:02,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:06:02,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 144 transitions. [2024-06-14 13:06:02,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3902439024390244 [2024-06-14 13:06:02,302 INFO L175 Difference]: Start difference. First operand has 381 places, 507 transitions, 7373 flow. Second operand 9 states and 144 transitions. [2024-06-14 13:06:02,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 540 transitions, 8641 flow [2024-06-14 13:06:05,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 540 transitions, 8404 flow, removed 71 selfloop flow, removed 4 redundant places. [2024-06-14 13:06:05,279 INFO L231 Difference]: Finished difference. Result has 386 places, 513 transitions, 7410 flow [2024-06-14 13:06:05,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7167, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=438, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7410, PETRI_PLACES=386, PETRI_TRANSITIONS=513} [2024-06-14 13:06:05,279 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 344 predicate places. [2024-06-14 13:06:05,280 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 513 transitions, 7410 flow [2024-06-14 13:06:05,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:06:05,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:06:05,280 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:06:05,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-14 13:06:05,280 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:06:05,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:06:05,280 INFO L85 PathProgramCache]: Analyzing trace with hash 421757075, now seen corresponding path program 1 times [2024-06-14 13:06:05,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:06:05,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245709926] [2024-06-14 13:06:05,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:06:05,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:06:05,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:06:06,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:06:06,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:06:06,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245709926] [2024-06-14 13:06:06,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245709926] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:06:06,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:06:06,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:06:06,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745798245] [2024-06-14 13:06:06,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:06:06,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:06:06,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:06:06,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:06:06,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:06:06,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:06:06,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 513 transitions, 7410 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:06:06,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:06:06,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:06:06,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:06:08,164 INFO L124 PetriNetUnfolderBase]: 4554/7060 cut-off events. [2024-06-14 13:06:08,165 INFO L125 PetriNetUnfolderBase]: For 758761/758769 co-relation queries the response was YES. [2024-06-14 13:06:08,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56367 conditions, 7060 events. 4554/7060 cut-off events. For 758761/758769 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 42082 event pairs, 1019 based on Foata normal form. 12/7070 useless extension candidates. Maximal degree in co-relation 56185. Up to 6272 conditions per place. [2024-06-14 13:06:08,293 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 371 selfloop transitions, 197 changer transitions 0/571 dead transitions. [2024-06-14 13:06:08,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 571 transitions, 9530 flow [2024-06-14 13:06:08,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:06:08,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:06:08,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-14 13:06:08,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4363143631436314 [2024-06-14 13:06:08,294 INFO L175 Difference]: Start difference. First operand has 386 places, 513 transitions, 7410 flow. Second operand 9 states and 161 transitions. [2024-06-14 13:06:08,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 571 transitions, 9530 flow [2024-06-14 13:06:11,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 571 transitions, 9346 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-14 13:06:11,223 INFO L231 Difference]: Finished difference. Result has 390 places, 536 transitions, 7978 flow [2024-06-14 13:06:11,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7226, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7978, PETRI_PLACES=390, PETRI_TRANSITIONS=536} [2024-06-14 13:06:11,223 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 348 predicate places. [2024-06-14 13:06:11,223 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 536 transitions, 7978 flow [2024-06-14 13:06:11,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:06:11,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:06:11,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:06:11,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-14 13:06:11,224 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:06:11,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:06:11,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1547741937, now seen corresponding path program 2 times [2024-06-14 13:06:11,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:06:11,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620838581] [2024-06-14 13:06:11,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:06:11,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:06:11,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:06:12,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:06:12,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:06:12,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620838581] [2024-06-14 13:06:12,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620838581] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:06:12,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:06:12,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:06:12,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753752844] [2024-06-14 13:06:12,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:06:12,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:06:12,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:06:12,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:06:12,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:06:12,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:06:12,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 536 transitions, 7978 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:06:12,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:06:12,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:06:12,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:06:13,871 INFO L124 PetriNetUnfolderBase]: 4730/7304 cut-off events. [2024-06-14 13:06:13,872 INFO L125 PetriNetUnfolderBase]: For 838683/838691 co-relation queries the response was YES. [2024-06-14 13:06:13,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60497 conditions, 7304 events. 4730/7304 cut-off events. For 838683/838691 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 43567 event pairs, 1014 based on Foata normal form. 12/7314 useless extension candidates. Maximal degree in co-relation 60313. Up to 6408 conditions per place. [2024-06-14 13:06:13,977 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 387 selfloop transitions, 225 changer transitions 0/615 dead transitions. [2024-06-14 13:06:13,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 615 transitions, 10569 flow [2024-06-14 13:06:13,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:06:13,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:06:13,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-14 13:06:13,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4281842818428184 [2024-06-14 13:06:13,979 INFO L175 Difference]: Start difference. First operand has 390 places, 536 transitions, 7978 flow. Second operand 9 states and 158 transitions. [2024-06-14 13:06:13,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 615 transitions, 10569 flow [2024-06-14 13:06:17,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 615 transitions, 10339 flow, removed 76 selfloop flow, removed 3 redundant places. [2024-06-14 13:06:17,112 INFO L231 Difference]: Finished difference. Result has 398 places, 580 transitions, 8980 flow [2024-06-14 13:06:17,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7792, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=536, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=182, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8980, PETRI_PLACES=398, PETRI_TRANSITIONS=580} [2024-06-14 13:06:17,112 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 356 predicate places. [2024-06-14 13:06:17,113 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 580 transitions, 8980 flow [2024-06-14 13:06:17,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:06:17,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:06:17,113 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:06:17,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-14 13:06:17,113 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:06:17,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:06:17,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1720469163, now seen corresponding path program 3 times [2024-06-14 13:06:17,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:06:17,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238430010] [2024-06-14 13:06:17,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:06:17,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:06:17,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:06:18,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:06:18,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:06:18,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238430010] [2024-06-14 13:06:18,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238430010] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:06:18,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:06:18,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:06:18,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951351947] [2024-06-14 13:06:18,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:06:18,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:06:18,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:06:18,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:06:18,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:06:18,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:06:18,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 580 transitions, 8980 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:06:18,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:06:18,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:06:18,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:06:20,076 INFO L124 PetriNetUnfolderBase]: 4756/7340 cut-off events. [2024-06-14 13:06:20,076 INFO L125 PetriNetUnfolderBase]: For 855699/855707 co-relation queries the response was YES. [2024-06-14 13:06:20,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61575 conditions, 7340 events. 4756/7340 cut-off events. For 855699/855707 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 43716 event pairs, 1078 based on Foata normal form. 10/7348 useless extension candidates. Maximal degree in co-relation 61387. Up to 7109 conditions per place. [2024-06-14 13:06:20,183 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 527 selfloop transitions, 87 changer transitions 0/617 dead transitions. [2024-06-14 13:06:20,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 617 transitions, 10674 flow [2024-06-14 13:06:20,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:06:20,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:06:20,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 154 transitions. [2024-06-14 13:06:20,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375609756097561 [2024-06-14 13:06:20,184 INFO L175 Difference]: Start difference. First operand has 398 places, 580 transitions, 8980 flow. Second operand 10 states and 154 transitions. [2024-06-14 13:06:20,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 617 transitions, 10674 flow [2024-06-14 13:06:23,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 617 transitions, 10319 flow, removed 59 selfloop flow, removed 4 redundant places. [2024-06-14 13:06:23,717 INFO L231 Difference]: Finished difference. Result has 405 places, 590 transitions, 9028 flow [2024-06-14 13:06:23,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8625, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=580, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=497, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9028, PETRI_PLACES=405, PETRI_TRANSITIONS=590} [2024-06-14 13:06:23,718 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 363 predicate places. [2024-06-14 13:06:23,718 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 590 transitions, 9028 flow [2024-06-14 13:06:23,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:06:23,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:06:23,719 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:06:23,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-14 13:06:23,719 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:06:23,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:06:23,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1715029143, now seen corresponding path program 3 times [2024-06-14 13:06:23,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:06:23,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015053228] [2024-06-14 13:06:23,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:06:23,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:06:23,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:06:24,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:06:24,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:06:24,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015053228] [2024-06-14 13:06:24,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015053228] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:06:24,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:06:24,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:06:24,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12791334] [2024-06-14 13:06:24,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:06:24,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:06:24,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:06:24,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:06:24,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:06:24,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:06:24,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 590 transitions, 9028 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:06:24,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:06:24,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:06:24,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:06:26,552 INFO L124 PetriNetUnfolderBase]: 4744/7324 cut-off events. [2024-06-14 13:06:26,553 INFO L125 PetriNetUnfolderBase]: For 862333/862341 co-relation queries the response was YES. [2024-06-14 13:06:26,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60772 conditions, 7324 events. 4744/7324 cut-off events. For 862333/862341 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 43639 event pairs, 1022 based on Foata normal form. 12/7334 useless extension candidates. Maximal degree in co-relation 60582. Up to 6436 conditions per place. [2024-06-14 13:06:26,669 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 403 selfloop transitions, 216 changer transitions 0/622 dead transitions. [2024-06-14 13:06:26,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 622 transitions, 10936 flow [2024-06-14 13:06:26,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:06:26,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:06:26,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-14 13:06:26,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4281842818428184 [2024-06-14 13:06:26,670 INFO L175 Difference]: Start difference. First operand has 405 places, 590 transitions, 9028 flow. Second operand 9 states and 158 transitions. [2024-06-14 13:06:26,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 622 transitions, 10936 flow [2024-06-14 13:06:30,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 622 transitions, 10744 flow, removed 45 selfloop flow, removed 4 redundant places. [2024-06-14 13:06:30,651 INFO L231 Difference]: Finished difference. Result has 410 places, 591 transitions, 9298 flow [2024-06-14 13:06:30,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8836, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=590, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=215, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9298, PETRI_PLACES=410, PETRI_TRANSITIONS=591} [2024-06-14 13:06:30,652 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 368 predicate places. [2024-06-14 13:06:30,652 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 591 transitions, 9298 flow [2024-06-14 13:06:30,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:06:30,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:06:30,652 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:06:30,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-14 13:06:30,652 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:06:30,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:06:30,653 INFO L85 PathProgramCache]: Analyzing trace with hash 333099059, now seen corresponding path program 1 times [2024-06-14 13:06:30,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:06:30,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136343231] [2024-06-14 13:06:30,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:06:30,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:06:30,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:06:31,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:06:31,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:06:31,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136343231] [2024-06-14 13:06:31,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136343231] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:06:31,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:06:31,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:06:31,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085564909] [2024-06-14 13:06:31,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:06:31,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:06:31,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:06:31,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:06:31,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:06:31,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:06:31,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 591 transitions, 9298 flow. Second operand has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:06:31,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:06:31,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:06:31,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:06:33,585 INFO L124 PetriNetUnfolderBase]: 4826/7449 cut-off events. [2024-06-14 13:06:33,585 INFO L125 PetriNetUnfolderBase]: For 934317/934323 co-relation queries the response was YES. [2024-06-14 13:06:33,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62659 conditions, 7449 events. 4826/7449 cut-off events. For 934317/934323 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 44417 event pairs, 928 based on Foata normal form. 14/7461 useless extension candidates. Maximal degree in co-relation 62468. Up to 6848 conditions per place. [2024-06-14 13:06:33,701 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 521 selfloop transitions, 113 changer transitions 0/637 dead transitions. [2024-06-14 13:06:33,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 637 transitions, 11005 flow [2024-06-14 13:06:33,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:06:33,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:06:33,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-14 13:06:33,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42005420054200543 [2024-06-14 13:06:33,702 INFO L175 Difference]: Start difference. First operand has 410 places, 591 transitions, 9298 flow. Second operand 9 states and 155 transitions. [2024-06-14 13:06:33,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 637 transitions, 11005 flow [2024-06-14 13:06:36,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 637 transitions, 10616 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-14 13:06:36,957 INFO L231 Difference]: Finished difference. Result has 414 places, 596 transitions, 9253 flow [2024-06-14 13:06:36,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8911, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=591, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=480, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9253, PETRI_PLACES=414, PETRI_TRANSITIONS=596} [2024-06-14 13:06:36,958 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 372 predicate places. [2024-06-14 13:06:36,958 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 596 transitions, 9253 flow [2024-06-14 13:06:36,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:06:36,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:06:36,959 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:06:36,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-14 13:06:36,959 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:06:36,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:06:36,959 INFO L85 PathProgramCache]: Analyzing trace with hash 340517669, now seen corresponding path program 2 times [2024-06-14 13:06:36,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:06:36,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221972982] [2024-06-14 13:06:36,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:06:36,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:06:36,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:06:37,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:06:37,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:06:37,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221972982] [2024-06-14 13:06:37,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221972982] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:06:37,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:06:37,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:06:37,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617749793] [2024-06-14 13:06:37,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:06:37,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:06:37,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:06:37,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:06:37,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:06:38,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:06:38,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 596 transitions, 9253 flow. Second operand has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:06:38,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:06:38,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:06:38,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:06:39,906 INFO L124 PetriNetUnfolderBase]: 4870/7517 cut-off events. [2024-06-14 13:06:39,906 INFO L125 PetriNetUnfolderBase]: For 950560/950566 co-relation queries the response was YES. [2024-06-14 13:06:39,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62865 conditions, 7517 events. 4870/7517 cut-off events. For 950560/950566 co-relation queries the response was YES. Maximal size of possible extension queue 469. Compared 44950 event pairs, 1061 based on Foata normal form. 18/7533 useless extension candidates. Maximal degree in co-relation 62673. Up to 7142 conditions per place. [2024-06-14 13:06:40,030 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 511 selfloop transitions, 117 changer transitions 0/631 dead transitions. [2024-06-14 13:06:40,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 631 transitions, 10682 flow [2024-06-14 13:06:40,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:06:40,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:06:40,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 152 transitions. [2024-06-14 13:06:40,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41192411924119243 [2024-06-14 13:06:40,031 INFO L175 Difference]: Start difference. First operand has 414 places, 596 transitions, 9253 flow. Second operand 9 states and 152 transitions. [2024-06-14 13:06:40,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 631 transitions, 10682 flow [2024-06-14 13:06:42,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 631 transitions, 10557 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-14 13:06:42,550 INFO L231 Difference]: Finished difference. Result has 419 places, 598 transitions, 9419 flow [2024-06-14 13:06:42,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=9128, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=596, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=479, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9419, PETRI_PLACES=419, PETRI_TRANSITIONS=598} [2024-06-14 13:06:42,551 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 377 predicate places. [2024-06-14 13:06:42,551 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 598 transitions, 9419 flow [2024-06-14 13:06:42,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:06:42,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:06:42,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:06:42,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-14 13:06:42,554 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:06:42,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:06:42,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1806359313, now seen corresponding path program 3 times [2024-06-14 13:06:42,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:06:42,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832613741] [2024-06-14 13:06:42,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:06:42,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:06:42,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:06:43,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:06:43,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:06:43,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832613741] [2024-06-14 13:06:43,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832613741] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:06:43,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:06:43,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:06:43,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704429830] [2024-06-14 13:06:43,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:06:43,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:06:43,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:06:43,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:06:43,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:06:43,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:06:43,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 598 transitions, 9419 flow. Second operand has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:06:43,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:06:43,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:06:43,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:06:45,656 INFO L124 PetriNetUnfolderBase]: 4975/7680 cut-off events. [2024-06-14 13:06:45,657 INFO L125 PetriNetUnfolderBase]: For 978727/978733 co-relation queries the response was YES. [2024-06-14 13:06:45,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64907 conditions, 7680 events. 4975/7680 cut-off events. For 978727/978733 co-relation queries the response was YES. Maximal size of possible extension queue 478. Compared 46215 event pairs, 1074 based on Foata normal form. 14/7692 useless extension candidates. Maximal degree in co-relation 64713. Up to 7180 conditions per place. [2024-06-14 13:06:45,782 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 523 selfloop transitions, 115 changer transitions 0/641 dead transitions. [2024-06-14 13:06:45,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 641 transitions, 11108 flow [2024-06-14 13:06:45,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:06:45,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:06:45,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-14 13:06:45,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4173441734417344 [2024-06-14 13:06:45,783 INFO L175 Difference]: Start difference. First operand has 419 places, 598 transitions, 9419 flow. Second operand 9 states and 154 transitions. [2024-06-14 13:06:45,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 641 transitions, 11108 flow [2024-06-14 13:06:50,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 641 transitions, 10854 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-14 13:06:50,141 INFO L231 Difference]: Finished difference. Result has 422 places, 603 transitions, 9491 flow [2024-06-14 13:06:50,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=9165, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=598, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=484, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9491, PETRI_PLACES=422, PETRI_TRANSITIONS=603} [2024-06-14 13:06:50,142 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 380 predicate places. [2024-06-14 13:06:50,142 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 603 transitions, 9491 flow [2024-06-14 13:06:50,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:06:50,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:06:50,142 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:06:50,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-14 13:06:50,142 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:06:50,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:06:50,143 INFO L85 PathProgramCache]: Analyzing trace with hash -299304107, now seen corresponding path program 4 times [2024-06-14 13:06:50,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:06:50,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830781825] [2024-06-14 13:06:50,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:06:50,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:06:50,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:06:50,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:06:50,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:06:50,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830781825] [2024-06-14 13:06:50,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830781825] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:06:50,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:06:50,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:06:50,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10811159] [2024-06-14 13:06:50,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:06:50,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:06:50,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:06:50,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:06:50,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:06:51,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:06:51,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 603 transitions, 9491 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:06:51,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:06:51,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:06:51,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:06:53,147 INFO L124 PetriNetUnfolderBase]: 5033/7761 cut-off events. [2024-06-14 13:06:53,148 INFO L125 PetriNetUnfolderBase]: For 1000433/1000441 co-relation queries the response was YES. [2024-06-14 13:06:53,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66617 conditions, 7761 events. 5033/7761 cut-off events. For 1000433/1000441 co-relation queries the response was YES. Maximal size of possible extension queue 488. Compared 46709 event pairs, 1073 based on Foata normal form. 8/7767 useless extension candidates. Maximal degree in co-relation 66421. Up to 7411 conditions per place. [2024-06-14 13:06:53,284 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 544 selfloop transitions, 101 changer transitions 0/648 dead transitions. [2024-06-14 13:06:53,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 648 transitions, 11541 flow [2024-06-14 13:06:53,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:06:53,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:06:53,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-14 13:06:53,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4173441734417344 [2024-06-14 13:06:53,286 INFO L175 Difference]: Start difference. First operand has 422 places, 603 transitions, 9491 flow. Second operand 9 states and 154 transitions. [2024-06-14 13:06:53,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 648 transitions, 11541 flow [2024-06-14 13:06:58,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 648 transitions, 11406 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-14 13:06:58,009 INFO L231 Difference]: Finished difference. Result has 427 places, 615 transitions, 9858 flow [2024-06-14 13:06:58,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=9356, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=603, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=508, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9858, PETRI_PLACES=427, PETRI_TRANSITIONS=615} [2024-06-14 13:06:58,010 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 385 predicate places. [2024-06-14 13:06:58,010 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 615 transitions, 9858 flow [2024-06-14 13:06:58,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:06:58,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:06:58,011 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:06:58,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-14 13:06:58,011 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:06:58,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:06:58,011 INFO L85 PathProgramCache]: Analyzing trace with hash -299184137, now seen corresponding path program 5 times [2024-06-14 13:06:58,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:06:58,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623519634] [2024-06-14 13:06:58,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:06:58,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:06:58,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:06:58,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:06:58,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:06:58,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623519634] [2024-06-14 13:06:58,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623519634] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:06:58,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:06:58,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:06:58,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341399402] [2024-06-14 13:06:58,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:06:58,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:06:58,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:06:58,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:06:58,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:06:58,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:06:58,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 615 transitions, 9858 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:06:58,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:06:58,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:06:58,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:07:01,061 INFO L124 PetriNetUnfolderBase]: 5027/7753 cut-off events. [2024-06-14 13:07:01,061 INFO L125 PetriNetUnfolderBase]: For 1011839/1011847 co-relation queries the response was YES. [2024-06-14 13:07:01,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66909 conditions, 7753 events. 5027/7753 cut-off events. For 1011839/1011847 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 46678 event pairs, 1141 based on Foata normal form. 10/7761 useless extension candidates. Maximal degree in co-relation 66710. Up to 7626 conditions per place. [2024-06-14 13:07:01,193 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 583 selfloop transitions, 53 changer transitions 0/639 dead transitions. [2024-06-14 13:07:01,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 639 transitions, 11196 flow [2024-06-14 13:07:01,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:07:01,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:07:01,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 140 transitions. [2024-06-14 13:07:01,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3794037940379404 [2024-06-14 13:07:01,194 INFO L175 Difference]: Start difference. First operand has 427 places, 615 transitions, 9858 flow. Second operand 9 states and 140 transitions. [2024-06-14 13:07:01,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 639 transitions, 11196 flow [2024-06-14 13:07:04,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 639 transitions, 11030 flow, removed 38 selfloop flow, removed 4 redundant places. [2024-06-14 13:07:04,981 INFO L231 Difference]: Finished difference. Result has 432 places, 615 transitions, 9804 flow [2024-06-14 13:07:04,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=9692, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=615, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=562, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9804, PETRI_PLACES=432, PETRI_TRANSITIONS=615} [2024-06-14 13:07:04,982 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 390 predicate places. [2024-06-14 13:07:04,982 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 615 transitions, 9804 flow [2024-06-14 13:07:04,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:07:04,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:07:04,982 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:07:04,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-14 13:07:04,982 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:07:04,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:07:04,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1848915663, now seen corresponding path program 4 times [2024-06-14 13:07:04,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:07:04,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331652582] [2024-06-14 13:07:04,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:07:04,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:07:04,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:07:05,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:07:05,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:07:05,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331652582] [2024-06-14 13:07:05,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331652582] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:07:05,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:07:05,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:07:05,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327050802] [2024-06-14 13:07:05,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:07:05,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:07:05,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:07:05,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:07:05,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:07:05,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:07:05,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 615 transitions, 9804 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:07:05,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:07:05,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:07:05,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:07:08,016 INFO L124 PetriNetUnfolderBase]: 5043/7775 cut-off events. [2024-06-14 13:07:08,017 INFO L125 PetriNetUnfolderBase]: For 1040223/1040231 co-relation queries the response was YES. [2024-06-14 13:07:08,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67262 conditions, 7775 events. 5043/7775 cut-off events. For 1040223/1040231 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 46846 event pairs, 1123 based on Foata normal form. 12/7785 useless extension candidates. Maximal degree in co-relation 67061. Up to 7473 conditions per place. [2024-06-14 13:07:08,151 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 539 selfloop transitions, 108 changer transitions 0/650 dead transitions. [2024-06-14 13:07:08,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 650 transitions, 11492 flow [2024-06-14 13:07:08,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:07:08,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:07:08,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-14 13:07:08,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4173441734417344 [2024-06-14 13:07:08,152 INFO L175 Difference]: Start difference. First operand has 432 places, 615 transitions, 9804 flow. Second operand 9 states and 154 transitions. [2024-06-14 13:07:08,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 650 transitions, 11492 flow [2024-06-14 13:07:11,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 650 transitions, 11356 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-14 13:07:11,869 INFO L231 Difference]: Finished difference. Result has 436 places, 621 transitions, 10044 flow [2024-06-14 13:07:11,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=9668, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=615, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=507, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10044, PETRI_PLACES=436, PETRI_TRANSITIONS=621} [2024-06-14 13:07:11,870 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 394 predicate places. [2024-06-14 13:07:11,870 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 621 transitions, 10044 flow [2024-06-14 13:07:11,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:07:11,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:07:11,870 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:07:11,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-14 13:07:11,870 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:07:11,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:07:11,871 INFO L85 PathProgramCache]: Analyzing trace with hash -275204169, now seen corresponding path program 6 times [2024-06-14 13:07:11,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:07:11,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104981497] [2024-06-14 13:07:11,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:07:11,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:07:11,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:07:12,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:07:12,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:07:12,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104981497] [2024-06-14 13:07:12,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104981497] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:07:12,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:07:12,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:07:12,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059511722] [2024-06-14 13:07:12,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:07:12,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:07:12,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:07:12,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:07:12,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:07:12,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:07:12,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 621 transitions, 10044 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:07:12,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:07:12,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:07:12,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:07:14,891 INFO L124 PetriNetUnfolderBase]: 5053/7789 cut-off events. [2024-06-14 13:07:14,891 INFO L125 PetriNetUnfolderBase]: For 1050718/1050726 co-relation queries the response was YES. [2024-06-14 13:07:14,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67844 conditions, 7789 events. 5053/7789 cut-off events. For 1050718/1050726 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 46891 event pairs, 1065 based on Foata normal form. 8/7795 useless extension candidates. Maximal degree in co-relation 67641. Up to 7438 conditions per place. [2024-06-14 13:07:15,038 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 554 selfloop transitions, 108 changer transitions 0/665 dead transitions. [2024-06-14 13:07:15,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 665 transitions, 11962 flow [2024-06-14 13:07:15,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 13:07:15,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 13:07:15,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 182 transitions. [2024-06-14 13:07:15,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4035476718403548 [2024-06-14 13:07:15,039 INFO L175 Difference]: Start difference. First operand has 436 places, 621 transitions, 10044 flow. Second operand 11 states and 182 transitions. [2024-06-14 13:07:15,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 665 transitions, 11962 flow [2024-06-14 13:07:19,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 665 transitions, 11753 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-14 13:07:19,136 INFO L231 Difference]: Finished difference. Result has 442 places, 624 transitions, 10129 flow [2024-06-14 13:07:19,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=9835, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=621, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=516, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10129, PETRI_PLACES=442, PETRI_TRANSITIONS=624} [2024-06-14 13:07:19,137 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 400 predicate places. [2024-06-14 13:07:19,137 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 624 transitions, 10129 flow [2024-06-14 13:07:19,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:07:19,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:07:19,137 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:07:19,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-14 13:07:19,138 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:07:19,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:07:19,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1854456417, now seen corresponding path program 7 times [2024-06-14 13:07:19,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:07:19,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864139357] [2024-06-14 13:07:19,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:07:19,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:07:19,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:07:20,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:07:20,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:07:20,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864139357] [2024-06-14 13:07:20,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864139357] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:07:20,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:07:20,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:07:20,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196063348] [2024-06-14 13:07:20,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:07:20,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:07:20,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:07:20,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:07:20,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:07:20,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:07:20,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 624 transitions, 10129 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:07:20,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:07:20,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:07:20,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:07:22,385 INFO L124 PetriNetUnfolderBase]: 5063/7803 cut-off events. [2024-06-14 13:07:22,385 INFO L125 PetriNetUnfolderBase]: For 1068900/1068908 co-relation queries the response was YES. [2024-06-14 13:07:22,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68227 conditions, 7803 events. 5063/7803 cut-off events. For 1068900/1068908 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 46984 event pairs, 1066 based on Foata normal form. 8/7809 useless extension candidates. Maximal degree in co-relation 68023. Up to 7448 conditions per place. [2024-06-14 13:07:22,497 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 550 selfloop transitions, 113 changer transitions 0/666 dead transitions. [2024-06-14 13:07:22,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 666 transitions, 11855 flow [2024-06-14 13:07:22,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 13:07:22,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 13:07:22,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 189 transitions. [2024-06-14 13:07:22,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38414634146341464 [2024-06-14 13:07:22,498 INFO L175 Difference]: Start difference. First operand has 442 places, 624 transitions, 10129 flow. Second operand 12 states and 189 transitions. [2024-06-14 13:07:22,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 666 transitions, 11855 flow [2024-06-14 13:07:26,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 666 transitions, 11549 flow, removed 37 selfloop flow, removed 9 redundant places. [2024-06-14 13:07:26,303 INFO L231 Difference]: Finished difference. Result has 445 places, 627 transitions, 10133 flow [2024-06-14 13:07:26,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=9839, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=624, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=514, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10133, PETRI_PLACES=445, PETRI_TRANSITIONS=627} [2024-06-14 13:07:26,304 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 403 predicate places. [2024-06-14 13:07:26,304 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 627 transitions, 10133 flow [2024-06-14 13:07:26,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:07:26,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:07:26,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:07:26,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-14 13:07:26,304 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:07:26,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:07:26,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1854456789, now seen corresponding path program 1 times [2024-06-14 13:07:26,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:07:26,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466377697] [2024-06-14 13:07:26,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:07:26,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:07:26,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:07:27,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:07:27,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:07:27,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466377697] [2024-06-14 13:07:27,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466377697] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:07:27,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:07:27,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:07:27,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459098392] [2024-06-14 13:07:27,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:07:27,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:07:27,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:07:27,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:07:27,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:07:27,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:07:27,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 627 transitions, 10133 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:07:27,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:07:27,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:07:27,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:07:29,331 INFO L124 PetriNetUnfolderBase]: 5115/7875 cut-off events. [2024-06-14 13:07:29,331 INFO L125 PetriNetUnfolderBase]: For 1122689/1122697 co-relation queries the response was YES. [2024-06-14 13:07:29,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69257 conditions, 7875 events. 5115/7875 cut-off events. For 1122689/1122697 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 47429 event pairs, 1085 based on Foata normal form. 10/7883 useless extension candidates. Maximal degree in co-relation 69052. Up to 7308 conditions per place. [2024-06-14 13:07:29,465 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 545 selfloop transitions, 124 changer transitions 0/672 dead transitions. [2024-06-14 13:07:29,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 672 transitions, 12205 flow [2024-06-14 13:07:29,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:07:29,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:07:29,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-14 13:07:29,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4254742547425474 [2024-06-14 13:07:29,467 INFO L175 Difference]: Start difference. First operand has 445 places, 627 transitions, 10133 flow. Second operand 9 states and 157 transitions. [2024-06-14 13:07:29,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 672 transitions, 12205 flow [2024-06-14 13:07:33,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 672 transitions, 11961 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-14 13:07:33,406 INFO L231 Difference]: Finished difference. Result has 445 places, 636 transitions, 10335 flow [2024-06-14 13:07:33,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=9889, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=627, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=509, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10335, PETRI_PLACES=445, PETRI_TRANSITIONS=636} [2024-06-14 13:07:33,407 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 403 predicate places. [2024-06-14 13:07:33,407 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 636 transitions, 10335 flow [2024-06-14 13:07:33,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:07:33,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:07:33,407 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:07:33,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-14 13:07:33,407 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:07:33,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:07:33,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1858170093, now seen corresponding path program 5 times [2024-06-14 13:07:33,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:07:33,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725480205] [2024-06-14 13:07:33,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:07:33,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:07:33,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:07:34,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:07:34,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:07:34,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725480205] [2024-06-14 13:07:34,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725480205] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:07:34,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:07:34,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:07:34,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638868396] [2024-06-14 13:07:34,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:07:34,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:07:34,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:07:34,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:07:34,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:07:34,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:07:34,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 636 transitions, 10335 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:07:34,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:07:34,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:07:34,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:07:36,682 INFO L124 PetriNetUnfolderBase]: 5185/7973 cut-off events. [2024-06-14 13:07:36,683 INFO L125 PetriNetUnfolderBase]: For 1156529/1156537 co-relation queries the response was YES. [2024-06-14 13:07:36,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70847 conditions, 7973 events. 5185/7973 cut-off events. For 1156529/1156537 co-relation queries the response was YES. Maximal size of possible extension queue 507. Compared 47951 event pairs, 1127 based on Foata normal form. 12/7983 useless extension candidates. Maximal degree in co-relation 70641. Up to 7625 conditions per place. [2024-06-14 13:07:36,821 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 563 selfloop transitions, 125 changer transitions 0/691 dead transitions. [2024-06-14 13:07:36,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 691 transitions, 12577 flow [2024-06-14 13:07:36,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 13:07:36,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 13:07:36,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 182 transitions. [2024-06-14 13:07:36,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4035476718403548 [2024-06-14 13:07:36,823 INFO L175 Difference]: Start difference. First operand has 445 places, 636 transitions, 10335 flow. Second operand 11 states and 182 transitions. [2024-06-14 13:07:36,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 691 transitions, 12577 flow [2024-06-14 13:07:40,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 691 transitions, 12424 flow, removed 42 selfloop flow, removed 4 redundant places. [2024-06-14 13:07:40,782 INFO L231 Difference]: Finished difference. Result has 453 places, 655 transitions, 10781 flow [2024-06-14 13:07:40,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=10185, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=636, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=527, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10781, PETRI_PLACES=453, PETRI_TRANSITIONS=655} [2024-06-14 13:07:40,782 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 411 predicate places. [2024-06-14 13:07:40,782 INFO L495 AbstractCegarLoop]: Abstraction has has 453 places, 655 transitions, 10781 flow [2024-06-14 13:07:40,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:07:40,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:07:40,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:07:40,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-14 13:07:40,783 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:07:40,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:07:40,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1858181253, now seen corresponding path program 6 times [2024-06-14 13:07:40,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:07:40,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652117697] [2024-06-14 13:07:40,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:07:40,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:07:40,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:07:41,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:07:41,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:07:41,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652117697] [2024-06-14 13:07:41,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652117697] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:07:41,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:07:41,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:07:41,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016572371] [2024-06-14 13:07:41,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:07:41,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:07:41,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:07:41,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:07:41,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:07:41,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:07:41,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 655 transitions, 10781 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:07:41,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:07:41,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:07:41,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:07:43,921 INFO L124 PetriNetUnfolderBase]: 5175/7959 cut-off events. [2024-06-14 13:07:43,922 INFO L125 PetriNetUnfolderBase]: For 1157745/1157753 co-relation queries the response was YES. [2024-06-14 13:07:44,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70891 conditions, 7959 events. 5175/7959 cut-off events. For 1157745/1157753 co-relation queries the response was YES. Maximal size of possible extension queue 507. Compared 47868 event pairs, 1132 based on Foata normal form. 10/7967 useless extension candidates. Maximal degree in co-relation 70682. Up to 7617 conditions per place. [2024-06-14 13:07:44,072 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 558 selfloop transitions, 130 changer transitions 0/691 dead transitions. [2024-06-14 13:07:44,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 691 transitions, 12501 flow [2024-06-14 13:07:44,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 13:07:44,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 13:07:44,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 189 transitions. [2024-06-14 13:07:44,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38414634146341464 [2024-06-14 13:07:44,073 INFO L175 Difference]: Start difference. First operand has 453 places, 655 transitions, 10781 flow. Second operand 12 states and 189 transitions. [2024-06-14 13:07:44,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 691 transitions, 12501 flow [2024-06-14 13:07:48,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 457 places, 691 transitions, 12199 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-06-14 13:07:48,482 INFO L231 Difference]: Finished difference. Result has 458 places, 656 transitions, 10767 flow [2024-06-14 13:07:48,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=10479, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=655, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=525, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10767, PETRI_PLACES=458, PETRI_TRANSITIONS=656} [2024-06-14 13:07:48,483 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 416 predicate places. [2024-06-14 13:07:48,483 INFO L495 AbstractCegarLoop]: Abstraction has has 458 places, 656 transitions, 10767 flow [2024-06-14 13:07:48,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:07:48,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:07:48,483 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:07:48,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-14 13:07:48,483 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:07:48,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:07:48,484 INFO L85 PathProgramCache]: Analyzing trace with hash -289918175, now seen corresponding path program 2 times [2024-06-14 13:07:48,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:07:48,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711066519] [2024-06-14 13:07:48,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:07:48,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:07:48,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:07:49,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:07:49,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:07:49,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711066519] [2024-06-14 13:07:49,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711066519] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:07:49,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:07:49,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:07:49,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387259962] [2024-06-14 13:07:49,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:07:49,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:07:49,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:07:49,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:07:49,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:07:49,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:07:49,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 458 places, 656 transitions, 10767 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:07:49,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:07:49,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:07:49,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:07:52,278 INFO L124 PetriNetUnfolderBase]: 5227/8031 cut-off events. [2024-06-14 13:07:52,279 INFO L125 PetriNetUnfolderBase]: For 1213038/1213046 co-relation queries the response was YES. [2024-06-14 13:07:52,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71934 conditions, 8031 events. 5227/8031 cut-off events. For 1213038/1213046 co-relation queries the response was YES. Maximal size of possible extension queue 513. Compared 48309 event pairs, 1142 based on Foata normal form. 12/8041 useless extension candidates. Maximal degree in co-relation 71724. Up to 7778 conditions per place. [2024-06-14 13:07:52,421 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 598 selfloop transitions, 92 changer transitions 0/693 dead transitions. [2024-06-14 13:07:52,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 693 transitions, 12549 flow [2024-06-14 13:07:52,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 13:07:52,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 13:07:52,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 170 transitions. [2024-06-14 13:07:52,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.376940133037694 [2024-06-14 13:07:52,423 INFO L175 Difference]: Start difference. First operand has 458 places, 656 transitions, 10767 flow. Second operand 11 states and 170 transitions. [2024-06-14 13:07:52,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 693 transitions, 12549 flow [2024-06-14 13:07:57,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 693 transitions, 12322 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-14 13:07:57,601 INFO L231 Difference]: Finished difference. Result has 461 places, 662 transitions, 10832 flow [2024-06-14 13:07:57,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=10540, PETRI_DIFFERENCE_MINUEND_PLACES=450, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=656, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=567, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10832, PETRI_PLACES=461, PETRI_TRANSITIONS=662} [2024-06-14 13:07:57,602 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 419 predicate places. [2024-06-14 13:07:57,602 INFO L495 AbstractCegarLoop]: Abstraction has has 461 places, 662 transitions, 10832 flow [2024-06-14 13:07:57,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:07:57,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:07:57,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:07:57,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-14 13:07:57,602 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:07:57,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:07:57,603 INFO L85 PathProgramCache]: Analyzing trace with hash -289924127, now seen corresponding path program 8 times [2024-06-14 13:07:57,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:07:57,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825656722] [2024-06-14 13:07:57,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:07:57,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:07:57,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:07:58,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:07:58,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:07:58,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825656722] [2024-06-14 13:07:58,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825656722] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:07:58,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:07:58,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:07:58,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542685663] [2024-06-14 13:07:58,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:07:58,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:07:58,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:07:58,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:07:58,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:07:58,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:07:58,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 662 transitions, 10832 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:07:58,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:07:58,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:07:58,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:08:01,329 INFO L124 PetriNetUnfolderBase]: 5253/8067 cut-off events. [2024-06-14 13:08:01,330 INFO L125 PetriNetUnfolderBase]: For 1235190/1235198 co-relation queries the response was YES. [2024-06-14 13:08:01,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72659 conditions, 8067 events. 5253/8067 cut-off events. For 1235190/1235198 co-relation queries the response was YES. Maximal size of possible extension queue 517. Compared 48547 event pairs, 1169 based on Foata normal form. 10/8075 useless extension candidates. Maximal degree in co-relation 72448. Up to 7916 conditions per place. [2024-06-14 13:08:01,452 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 628 selfloop transitions, 66 changer transitions 0/697 dead transitions. [2024-06-14 13:08:01,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 697 transitions, 12669 flow [2024-06-14 13:08:01,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 13:08:01,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 13:08:01,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 165 transitions. [2024-06-14 13:08:01,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36585365853658536 [2024-06-14 13:08:01,453 INFO L175 Difference]: Start difference. First operand has 461 places, 662 transitions, 10832 flow. Second operand 11 states and 165 transitions. [2024-06-14 13:08:01,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 697 transitions, 12669 flow [2024-06-14 13:08:06,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 464 places, 697 transitions, 12510 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-14 13:08:06,532 INFO L231 Difference]: Finished difference. Result has 466 places, 669 transitions, 10994 flow [2024-06-14 13:08:06,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=10673, PETRI_DIFFERENCE_MINUEND_PLACES=454, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=662, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=597, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10994, PETRI_PLACES=466, PETRI_TRANSITIONS=669} [2024-06-14 13:08:06,532 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 424 predicate places. [2024-06-14 13:08:06,533 INFO L495 AbstractCegarLoop]: Abstraction has has 466 places, 669 transitions, 10994 flow [2024-06-14 13:08:06,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:08:06,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:08:06,533 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:08:06,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-14 13:08:06,533 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:08:06,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:08:06,533 INFO L85 PathProgramCache]: Analyzing trace with hash -289929707, now seen corresponding path program 9 times [2024-06-14 13:08:06,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:08:06,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392276618] [2024-06-14 13:08:06,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:08:06,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:08:06,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:08:07,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:08:07,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:08:07,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392276618] [2024-06-14 13:08:07,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392276618] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:08:07,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:08:07,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:08:07,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584105436] [2024-06-14 13:08:07,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:08:07,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:08:07,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:08:07,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:08:07,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:08:07,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:08:07,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 466 places, 669 transitions, 10994 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:08:07,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:08:07,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:08:07,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:08:10,056 INFO L124 PetriNetUnfolderBase]: 5247/8059 cut-off events. [2024-06-14 13:08:10,056 INFO L125 PetriNetUnfolderBase]: For 1242266/1242274 co-relation queries the response was YES. [2024-06-14 13:08:10,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72606 conditions, 8059 events. 5247/8059 cut-off events. For 1242266/1242274 co-relation queries the response was YES. Maximal size of possible extension queue 517. Compared 48479 event pairs, 1170 based on Foata normal form. 10/8067 useless extension candidates. Maximal degree in co-relation 72392. Up to 7911 conditions per place. [2024-06-14 13:08:10,209 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 630 selfloop transitions, 66 changer transitions 0/699 dead transitions. [2024-06-14 13:08:10,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 699 transitions, 12472 flow [2024-06-14 13:08:10,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 13:08:10,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 13:08:10,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 187 transitions. [2024-06-14 13:08:10,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.350844277673546 [2024-06-14 13:08:10,210 INFO L175 Difference]: Start difference. First operand has 466 places, 669 transitions, 10994 flow. Second operand 13 states and 187 transitions. [2024-06-14 13:08:10,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 699 transitions, 12472 flow [2024-06-14 13:08:16,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 472 places, 699 transitions, 12281 flow, removed 46 selfloop flow, removed 6 redundant places. [2024-06-14 13:08:16,168 INFO L231 Difference]: Finished difference. Result has 473 places, 669 transitions, 10941 flow [2024-06-14 13:08:16,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=10803, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=669, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=603, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=10941, PETRI_PLACES=473, PETRI_TRANSITIONS=669} [2024-06-14 13:08:16,169 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 431 predicate places. [2024-06-14 13:08:16,169 INFO L495 AbstractCegarLoop]: Abstraction has has 473 places, 669 transitions, 10941 flow [2024-06-14 13:08:16,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:08:16,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:08:16,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:08:16,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-14 13:08:16,170 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:08:16,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:08:16,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1858175859, now seen corresponding path program 3 times [2024-06-14 13:08:16,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:08:16,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32212358] [2024-06-14 13:08:16,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:08:16,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:08:16,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:08:16,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:08:16,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:08:16,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32212358] [2024-06-14 13:08:16,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32212358] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:08:16,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:08:16,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:08:16,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251868819] [2024-06-14 13:08:16,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:08:16,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:08:16,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:08:16,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:08:16,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:08:17,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:08:17,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 473 places, 669 transitions, 10941 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:08:17,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:08:17,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:08:17,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:08:19,198 INFO L124 PetriNetUnfolderBase]: 5235/8043 cut-off events. [2024-06-14 13:08:19,198 INFO L125 PetriNetUnfolderBase]: For 1251551/1251559 co-relation queries the response was YES. [2024-06-14 13:08:19,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72158 conditions, 8043 events. 5235/8043 cut-off events. For 1251551/1251559 co-relation queries the response was YES. Maximal size of possible extension queue 517. Compared 48409 event pairs, 1136 based on Foata normal form. 12/8053 useless extension candidates. Maximal degree in co-relation 71943. Up to 7798 conditions per place. [2024-06-14 13:08:19,346 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 602 selfloop transitions, 91 changer transitions 0/696 dead transitions. [2024-06-14 13:08:19,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 481 places, 696 transitions, 12411 flow [2024-06-14 13:08:19,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:08:19,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:08:19,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 148 transitions. [2024-06-14 13:08:19,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4010840108401084 [2024-06-14 13:08:19,350 INFO L175 Difference]: Start difference. First operand has 473 places, 669 transitions, 10941 flow. Second operand 9 states and 148 transitions. [2024-06-14 13:08:19,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 481 places, 696 transitions, 12411 flow [2024-06-14 13:08:24,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 696 transitions, 12226 flow, removed 14 selfloop flow, removed 13 redundant places. [2024-06-14 13:08:24,524 INFO L231 Difference]: Finished difference. Result has 469 places, 669 transitions, 10944 flow [2024-06-14 13:08:24,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=10756, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=669, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=578, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10944, PETRI_PLACES=469, PETRI_TRANSITIONS=669} [2024-06-14 13:08:24,525 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 427 predicate places. [2024-06-14 13:08:24,526 INFO L495 AbstractCegarLoop]: Abstraction has has 469 places, 669 transitions, 10944 flow [2024-06-14 13:08:24,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:08:24,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:08:24,527 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:08:24,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-14 13:08:24,528 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:08:24,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:08:24,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1240676033, now seen corresponding path program 4 times [2024-06-14 13:08:24,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:08:24,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158268683] [2024-06-14 13:08:24,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:08:24,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:08:24,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:08:25,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:08:25,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:08:25,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158268683] [2024-06-14 13:08:25,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158268683] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:08:25,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:08:25,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:08:25,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35269633] [2024-06-14 13:08:25,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:08:25,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:08:25,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:08:25,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:08:25,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:08:25,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:08:25,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 469 places, 669 transitions, 10944 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:08:25,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:08:25,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:08:25,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:08:27,864 INFO L124 PetriNetUnfolderBase]: 5361/8217 cut-off events. [2024-06-14 13:08:27,864 INFO L125 PetriNetUnfolderBase]: For 1348036/1348044 co-relation queries the response was YES. [2024-06-14 13:08:27,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74986 conditions, 8217 events. 5361/8217 cut-off events. For 1348036/1348044 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 49386 event pairs, 1131 based on Foata normal form. 12/8227 useless extension candidates. Maximal degree in co-relation 74770. Up to 7864 conditions per place. [2024-06-14 13:08:28,019 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 608 selfloop transitions, 108 changer transitions 0/719 dead transitions. [2024-06-14 13:08:28,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 480 places, 719 transitions, 13416 flow [2024-06-14 13:08:28,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 13:08:28,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 13:08:28,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 187 transitions. [2024-06-14 13:08:28,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3800813008130081 [2024-06-14 13:08:28,020 INFO L175 Difference]: Start difference. First operand has 469 places, 669 transitions, 10944 flow. Second operand 12 states and 187 transitions. [2024-06-14 13:08:28,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 480 places, 719 transitions, 13416 flow [2024-06-14 13:08:34,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 472 places, 719 transitions, 13228 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-14 13:08:34,016 INFO L231 Difference]: Finished difference. Result has 474 places, 684 transitions, 11281 flow [2024-06-14 13:08:34,017 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=10762, PETRI_DIFFERENCE_MINUEND_PLACES=461, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=669, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=570, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=11281, PETRI_PLACES=474, PETRI_TRANSITIONS=684} [2024-06-14 13:08:34,017 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 432 predicate places. [2024-06-14 13:08:34,017 INFO L495 AbstractCegarLoop]: Abstraction has has 474 places, 684 transitions, 11281 flow [2024-06-14 13:08:34,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:08:34,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:08:34,018 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:08:34,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-14 13:08:34,018 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:08:34,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:08:34,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1233444539, now seen corresponding path program 7 times [2024-06-14 13:08:34,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:08:34,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474227200] [2024-06-14 13:08:34,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:08:34,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:08:34,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:08:34,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:08:34,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:08:34,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474227200] [2024-06-14 13:08:34,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474227200] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:08:34,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:08:34,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:08:34,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872658240] [2024-06-14 13:08:34,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:08:34,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:08:34,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:08:34,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:08:34,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:08:35,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:08:35,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 474 places, 684 transitions, 11281 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:08:35,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:08:35,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:08:35,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:08:37,357 INFO L124 PetriNetUnfolderBase]: 5575/8517 cut-off events. [2024-06-14 13:08:37,357 INFO L125 PetriNetUnfolderBase]: For 1485508/1485510 co-relation queries the response was YES. [2024-06-14 13:08:37,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79908 conditions, 8517 events. 5575/8517 cut-off events. For 1485508/1485510 co-relation queries the response was YES. Maximal size of possible extension queue 550. Compared 51206 event pairs, 1135 based on Foata normal form. 4/8519 useless extension candidates. Maximal degree in co-relation 79690. Up to 7435 conditions per place. [2024-06-14 13:08:37,514 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 461 selfloop transitions, 301 changer transitions 0/765 dead transitions. [2024-06-14 13:08:37,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 765 transitions, 14671 flow [2024-06-14 13:08:37,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:08:37,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:08:37,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-14 13:08:37,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4146341463414634 [2024-06-14 13:08:37,515 INFO L175 Difference]: Start difference. First operand has 474 places, 684 transitions, 11281 flow. Second operand 9 states and 153 transitions. [2024-06-14 13:08:37,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 765 transitions, 14671 flow [2024-06-14 13:08:44,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 765 transitions, 14434 flow, removed 51 selfloop flow, removed 4 redundant places. [2024-06-14 13:08:44,507 INFO L231 Difference]: Finished difference. Result has 481 places, 735 transitions, 12650 flow [2024-06-14 13:08:44,507 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11044, PETRI_DIFFERENCE_MINUEND_PLACES=470, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=684, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=252, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12650, PETRI_PLACES=481, PETRI_TRANSITIONS=735} [2024-06-14 13:08:44,507 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 439 predicate places. [2024-06-14 13:08:44,507 INFO L495 AbstractCegarLoop]: Abstraction has has 481 places, 735 transitions, 12650 flow [2024-06-14 13:08:44,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:08:44,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:08:44,508 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:08:44,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-14 13:08:44,508 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:08:44,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:08:44,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1233324383, now seen corresponding path program 5 times [2024-06-14 13:08:44,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:08:44,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809611401] [2024-06-14 13:08:44,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:08:44,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:08:44,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:08:45,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:08:45,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:08:45,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809611401] [2024-06-14 13:08:45,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809611401] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:08:45,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:08:45,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:08:45,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935250447] [2024-06-14 13:08:45,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:08:45,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:08:45,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:08:45,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:08:45,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:08:45,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:08:45,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 481 places, 735 transitions, 12650 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:08:45,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:08:45,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:08:45,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:08:48,010 INFO L124 PetriNetUnfolderBase]: 5563/8497 cut-off events. [2024-06-14 13:08:48,010 INFO L125 PetriNetUnfolderBase]: For 1499547/1499555 co-relation queries the response was YES. [2024-06-14 13:08:48,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80335 conditions, 8497 events. 5563/8497 cut-off events. For 1499547/1499555 co-relation queries the response was YES. Maximal size of possible extension queue 550. Compared 51099 event pairs, 1133 based on Foata normal form. 12/8507 useless extension candidates. Maximal degree in co-relation 80114. Up to 8152 conditions per place. [2024-06-14 13:08:48,173 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 648 selfloop transitions, 112 changer transitions 0/763 dead transitions. [2024-06-14 13:08:48,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 491 places, 763 transitions, 14480 flow [2024-06-14 13:08:48,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 13:08:48,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 13:08:48,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 167 transitions. [2024-06-14 13:08:48,175 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37028824833702884 [2024-06-14 13:08:48,175 INFO L175 Difference]: Start difference. First operand has 481 places, 735 transitions, 12650 flow. Second operand 11 states and 167 transitions. [2024-06-14 13:08:48,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 491 places, 763 transitions, 14480 flow [2024-06-14 13:08:55,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 488 places, 763 transitions, 14089 flow, removed 76 selfloop flow, removed 3 redundant places. [2024-06-14 13:08:55,223 INFO L231 Difference]: Finished difference. Result has 489 places, 735 transitions, 12489 flow [2024-06-14 13:08:55,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=12259, PETRI_DIFFERENCE_MINUEND_PLACES=478, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=735, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=623, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12489, PETRI_PLACES=489, PETRI_TRANSITIONS=735} [2024-06-14 13:08:55,224 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 447 predicate places. [2024-06-14 13:08:55,224 INFO L495 AbstractCegarLoop]: Abstraction has has 489 places, 735 transitions, 12489 flow [2024-06-14 13:08:55,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:08:55,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:08:55,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:08:55,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-14 13:08:55,224 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:08:55,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:08:55,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1240681985, now seen corresponding path program 10 times [2024-06-14 13:08:55,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:08:55,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099342997] [2024-06-14 13:08:55,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:08:55,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:08:55,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:08:56,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:08:56,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:08:56,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099342997] [2024-06-14 13:08:56,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099342997] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:08:56,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:08:56,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:08:56,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032415584] [2024-06-14 13:08:56,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:08:56,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:08:56,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:08:56,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:08:56,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:08:56,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:08:56,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 489 places, 735 transitions, 12489 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:08:56,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:08:56,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:08:56,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:08:58,685 INFO L124 PetriNetUnfolderBase]: 5589/8533 cut-off events. [2024-06-14 13:08:58,685 INFO L125 PetriNetUnfolderBase]: For 1527938/1527946 co-relation queries the response was YES. [2024-06-14 13:08:58,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80412 conditions, 8533 events. 5589/8533 cut-off events. For 1527938/1527946 co-relation queries the response was YES. Maximal size of possible extension queue 552. Compared 51342 event pairs, 1197 based on Foata normal form. 10/8541 useless extension candidates. Maximal degree in co-relation 80190. Up to 8393 conditions per place. [2024-06-14 13:08:58,849 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 704 selfloop transitions, 60 changer transitions 0/767 dead transitions. [2024-06-14 13:08:58,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 500 places, 767 transitions, 14488 flow [2024-06-14 13:08:58,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 13:08:58,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 13:08:58,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 170 transitions. [2024-06-14 13:08:58,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34552845528455284 [2024-06-14 13:08:58,850 INFO L175 Difference]: Start difference. First operand has 489 places, 735 transitions, 12489 flow. Second operand 12 states and 170 transitions. [2024-06-14 13:08:58,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 500 places, 767 transitions, 14488 flow [2024-06-14 13:09:05,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 490 places, 767 transitions, 14242 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-14 13:09:05,789 INFO L231 Difference]: Finished difference. Result has 493 places, 742 transitions, 12562 flow [2024-06-14 13:09:05,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=12243, PETRI_DIFFERENCE_MINUEND_PLACES=479, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=735, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=675, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=12562, PETRI_PLACES=493, PETRI_TRANSITIONS=742} [2024-06-14 13:09:05,790 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 451 predicate places. [2024-06-14 13:09:05,790 INFO L495 AbstractCegarLoop]: Abstraction has has 493 places, 742 transitions, 12562 flow [2024-06-14 13:09:05,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:09:05,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:09:05,791 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:09:05,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-14 13:09:05,791 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:09:05,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:09:05,791 INFO L85 PathProgramCache]: Analyzing trace with hash 902698383, now seen corresponding path program 8 times [2024-06-14 13:09:05,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:09:05,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808193380] [2024-06-14 13:09:05,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:09:05,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:09:05,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:09:06,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:09:06,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:09:06,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808193380] [2024-06-14 13:09:06,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808193380] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:09:06,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:09:06,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:09:06,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397596967] [2024-06-14 13:09:06,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:09:06,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:09:06,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:09:06,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:09:06,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:09:06,926 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:09:06,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 493 places, 742 transitions, 12562 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:09:06,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:09:06,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:09:06,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:09:09,575 INFO L124 PetriNetUnfolderBase]: 5609/8565 cut-off events. [2024-06-14 13:09:09,576 INFO L125 PetriNetUnfolderBase]: For 1566794/1566796 co-relation queries the response was YES. [2024-06-14 13:09:09,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80637 conditions, 8565 events. 5609/8565 cut-off events. For 1566794/1566796 co-relation queries the response was YES. Maximal size of possible extension queue 555. Compared 51467 event pairs, 1136 based on Foata normal form. 6/8569 useless extension candidates. Maximal degree in co-relation 80412. Up to 7471 conditions per place. [2024-06-14 13:09:09,737 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 491 selfloop transitions, 283 changer transitions 0/777 dead transitions. [2024-06-14 13:09:09,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 501 places, 777 transitions, 15228 flow [2024-06-14 13:09:09,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:09:09,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:09:09,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-14 13:09:09,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42005420054200543 [2024-06-14 13:09:09,739 INFO L175 Difference]: Start difference. First operand has 493 places, 742 transitions, 12562 flow. Second operand 9 states and 155 transitions. [2024-06-14 13:09:09,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 501 places, 777 transitions, 15228 flow [2024-06-14 13:09:17,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 493 places, 777 transitions, 15048 flow, removed 36 selfloop flow, removed 8 redundant places. [2024-06-14 13:09:17,669 INFO L231 Difference]: Finished difference. Result has 494 places, 748 transitions, 13041 flow [2024-06-14 13:09:17,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=12382, PETRI_DIFFERENCE_MINUEND_PLACES=485, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=742, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=277, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=465, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13041, PETRI_PLACES=494, PETRI_TRANSITIONS=748} [2024-06-14 13:09:17,669 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 452 predicate places. [2024-06-14 13:09:17,669 INFO L495 AbstractCegarLoop]: Abstraction has has 494 places, 748 transitions, 13041 flow [2024-06-14 13:09:17,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:09:17,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:09:17,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:09:17,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-14 13:09:17,670 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:09:17,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:09:17,671 INFO L85 PathProgramCache]: Analyzing trace with hash 906191463, now seen corresponding path program 9 times [2024-06-14 13:09:17,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:09:17,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302824341] [2024-06-14 13:09:17,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:09:17,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:09:17,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:09:18,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:09:18,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:09:18,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302824341] [2024-06-14 13:09:18,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302824341] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:09:18,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:09:18,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:09:18,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669472085] [2024-06-14 13:09:18,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:09:18,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:09:18,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:09:18,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:09:18,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:09:18,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:09:18,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 494 places, 748 transitions, 13041 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:09:18,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:09:18,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:09:18,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:09:21,424 INFO L124 PetriNetUnfolderBase]: 5619/8575 cut-off events. [2024-06-14 13:09:21,424 INFO L125 PetriNetUnfolderBase]: For 1580556/1580564 co-relation queries the response was YES. [2024-06-14 13:09:21,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81635 conditions, 8575 events. 5619/8575 cut-off events. For 1580556/1580564 co-relation queries the response was YES. Maximal size of possible extension queue 557. Compared 51563 event pairs, 1158 based on Foata normal form. 10/8583 useless extension candidates. Maximal degree in co-relation 81409. Up to 8300 conditions per place. [2024-06-14 13:09:21,563 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 674 selfloop transitions, 102 changer transitions 0/779 dead transitions. [2024-06-14 13:09:21,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 504 places, 779 transitions, 15189 flow [2024-06-14 13:09:21,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 13:09:21,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 13:09:21,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 171 transitions. [2024-06-14 13:09:21,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37915742793791574 [2024-06-14 13:09:21,565 INFO L175 Difference]: Start difference. First operand has 494 places, 748 transitions, 13041 flow. Second operand 11 states and 171 transitions. [2024-06-14 13:09:21,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 504 places, 779 transitions, 15189 flow [2024-06-14 13:09:29,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 496 places, 779 transitions, 14476 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-14 13:09:29,676 INFO L231 Difference]: Finished difference. Result has 497 places, 751 transitions, 12600 flow [2024-06-14 13:09:29,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=12330, PETRI_DIFFERENCE_MINUEND_PLACES=486, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=748, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=648, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12600, PETRI_PLACES=497, PETRI_TRANSITIONS=751} [2024-06-14 13:09:29,677 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 455 predicate places. [2024-06-14 13:09:29,677 INFO L495 AbstractCegarLoop]: Abstraction has has 497 places, 751 transitions, 12600 flow [2024-06-14 13:09:29,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:09:29,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:09:29,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:09:29,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-14 13:09:29,678 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:09:29,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:09:29,678 INFO L85 PathProgramCache]: Analyzing trace with hash 913543113, now seen corresponding path program 10 times [2024-06-14 13:09:29,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:09:29,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218905181] [2024-06-14 13:09:29,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:09:29,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:09:29,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:09:30,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:09:30,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:09:30,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218905181] [2024-06-14 13:09:30,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218905181] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:09:30,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:09:30,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:09:30,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467470623] [2024-06-14 13:09:30,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:09:30,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:09:30,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:09:30,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:09:30,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:09:30,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:09:30,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 497 places, 751 transitions, 12600 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:09:30,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:09:30,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:09:30,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:09:33,181 INFO L124 PetriNetUnfolderBase]: 5613/8567 cut-off events. [2024-06-14 13:09:33,181 INFO L125 PetriNetUnfolderBase]: For 1590547/1590555 co-relation queries the response was YES. [2024-06-14 13:09:33,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80668 conditions, 8567 events. 5613/8567 cut-off events. For 1590547/1590555 co-relation queries the response was YES. Maximal size of possible extension queue 557. Compared 51568 event pairs, 1166 based on Foata normal form. 10/8575 useless extension candidates. Maximal degree in co-relation 80443. Up to 8348 conditions per place. [2024-06-14 13:09:33,345 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 681 selfloop transitions, 88 changer transitions 0/772 dead transitions. [2024-06-14 13:09:33,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 505 places, 772 transitions, 14198 flow [2024-06-14 13:09:33,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:09:33,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:09:33,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 140 transitions. [2024-06-14 13:09:33,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3794037940379404 [2024-06-14 13:09:33,347 INFO L175 Difference]: Start difference. First operand has 497 places, 751 transitions, 12600 flow. Second operand 9 states and 140 transitions. [2024-06-14 13:09:33,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 505 places, 772 transitions, 14198 flow [2024-06-14 13:09:41,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 499 places, 772 transitions, 14027 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-14 13:09:41,387 INFO L231 Difference]: Finished difference. Result has 500 places, 751 transitions, 12611 flow [2024-06-14 13:09:41,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=12429, PETRI_DIFFERENCE_MINUEND_PLACES=491, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=751, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=663, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12611, PETRI_PLACES=500, PETRI_TRANSITIONS=751} [2024-06-14 13:09:41,388 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 458 predicate places. [2024-06-14 13:09:41,388 INFO L495 AbstractCegarLoop]: Abstraction has has 500 places, 751 transitions, 12611 flow [2024-06-14 13:09:41,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:09:41,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:09:41,388 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:09:41,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-14 13:09:41,389 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:09:41,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:09:41,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1244406635, now seen corresponding path program 11 times [2024-06-14 13:09:41,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:09:41,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383518198] [2024-06-14 13:09:41,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:09:41,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:09:41,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:09:42,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:09:42,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:09:42,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383518198] [2024-06-14 13:09:42,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383518198] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:09:42,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:09:42,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:09:42,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122200948] [2024-06-14 13:09:42,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:09:42,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:09:42,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:09:42,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:09:42,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:09:42,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:09:42,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 500 places, 751 transitions, 12611 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:09:42,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:09:42,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:09:42,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:09:44,723 INFO L124 PetriNetUnfolderBase]: 5639/8605 cut-off events. [2024-06-14 13:09:44,723 INFO L125 PetriNetUnfolderBase]: For 1633132/1633136 co-relation queries the response was YES. [2024-06-14 13:09:44,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81462 conditions, 8605 events. 5639/8605 cut-off events. For 1633132/1633136 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 51740 event pairs, 1211 based on Foata normal form. 6/8609 useless extension candidates. Maximal degree in co-relation 81236. Up to 8296 conditions per place. [2024-06-14 13:09:44,887 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 653 selfloop transitions, 128 changer transitions 0/784 dead transitions. [2024-06-14 13:09:44,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 784 transitions, 14912 flow [2024-06-14 13:09:44,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 13:09:44,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 13:09:44,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 163 transitions. [2024-06-14 13:09:44,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3614190687361419 [2024-06-14 13:09:44,888 INFO L175 Difference]: Start difference. First operand has 500 places, 751 transitions, 12611 flow. Second operand 11 states and 163 transitions. [2024-06-14 13:09:44,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 510 places, 784 transitions, 14912 flow [2024-06-14 13:09:52,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 503 places, 784 transitions, 14732 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-14 13:09:52,926 INFO L231 Difference]: Finished difference. Result has 505 places, 760 transitions, 12931 flow [2024-06-14 13:09:52,926 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=12431, PETRI_DIFFERENCE_MINUEND_PLACES=493, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=751, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=626, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12931, PETRI_PLACES=505, PETRI_TRANSITIONS=760} [2024-06-14 13:09:52,936 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 463 predicate places. [2024-06-14 13:09:52,936 INFO L495 AbstractCegarLoop]: Abstraction has has 505 places, 760 transitions, 12931 flow [2024-06-14 13:09:52,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:09:52,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:09:52,937 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:09:52,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-14 13:09:52,937 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:09:52,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:09:52,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1244406449, now seen corresponding path program 11 times [2024-06-14 13:09:52,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:09:52,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534275645] [2024-06-14 13:09:52,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:09:52,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:09:52,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:09:53,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:09:53,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:09:53,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534275645] [2024-06-14 13:09:53,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534275645] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:09:53,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:09:53,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:09:53,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945582149] [2024-06-14 13:09:53,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:09:53,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:09:53,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:09:53,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:09:53,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:09:53,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:09:53,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 505 places, 760 transitions, 12931 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:09:53,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:09:53,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:09:53,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:09:56,552 INFO L124 PetriNetUnfolderBase]: 5627/8591 cut-off events. [2024-06-14 13:09:56,553 INFO L125 PetriNetUnfolderBase]: For 1644456/1644458 co-relation queries the response was YES. [2024-06-14 13:09:56,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81340 conditions, 8591 events. 5627/8591 cut-off events. For 1644456/1644458 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 51650 event pairs, 1159 based on Foata normal form. 6/8595 useless extension candidates. Maximal degree in co-relation 81112. Up to 7502 conditions per place. [2024-06-14 13:09:56,704 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 506 selfloop transitions, 278 changer transitions 0/787 dead transitions. [2024-06-14 13:09:56,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 513 places, 787 transitions, 15525 flow [2024-06-14 13:09:56,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:09:56,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:09:56,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-14 13:09:56,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42005420054200543 [2024-06-14 13:09:56,705 INFO L175 Difference]: Start difference. First operand has 505 places, 760 transitions, 12931 flow. Second operand 9 states and 155 transitions. [2024-06-14 13:09:56,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 513 places, 787 transitions, 15525 flow [2024-06-14 13:10:05,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 507 places, 787 transitions, 15252 flow, removed 50 selfloop flow, removed 6 redundant places. [2024-06-14 13:10:05,365 INFO L231 Difference]: Finished difference. Result has 508 places, 761 transitions, 13244 flow [2024-06-14 13:10:05,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=12658, PETRI_DIFFERENCE_MINUEND_PLACES=499, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=760, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=277, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=482, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13244, PETRI_PLACES=508, PETRI_TRANSITIONS=761} [2024-06-14 13:10:05,366 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 466 predicate places. [2024-06-14 13:10:05,366 INFO L495 AbstractCegarLoop]: Abstraction has has 508 places, 761 transitions, 13244 flow [2024-06-14 13:10:05,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:10:05,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:10:05,366 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:10:05,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-14 13:10:05,367 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:10:05,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:10:05,367 INFO L85 PathProgramCache]: Analyzing trace with hash 906180117, now seen corresponding path program 12 times [2024-06-14 13:10:05,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:10:05,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834452151] [2024-06-14 13:10:05,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:10:05,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:10:05,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:10:06,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:10:06,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:10:06,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834452151] [2024-06-14 13:10:06,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834452151] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:10:06,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:10:06,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:10:06,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140783671] [2024-06-14 13:10:06,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:10:06,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:10:06,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:10:06,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:10:06,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:10:06,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:10:06,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 508 places, 761 transitions, 13244 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:10:06,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:10:06,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:10:06,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:10:09,020 INFO L124 PetriNetUnfolderBase]: 5621/8579 cut-off events. [2024-06-14 13:10:09,021 INFO L125 PetriNetUnfolderBase]: For 1646047/1646055 co-relation queries the response was YES. [2024-06-14 13:10:09,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81674 conditions, 8579 events. 5621/8579 cut-off events. For 1646047/1646055 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 51606 event pairs, 1220 based on Foata normal form. 10/8587 useless extension candidates. Maximal degree in co-relation 81446. Up to 8442 conditions per place. [2024-06-14 13:10:09,193 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 721 selfloop transitions, 60 changer transitions 0/784 dead transitions. [2024-06-14 13:10:09,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 518 places, 784 transitions, 14878 flow [2024-06-14 13:10:09,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 13:10:09,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 13:10:09,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 159 transitions. [2024-06-14 13:10:09,195 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.352549889135255 [2024-06-14 13:10:09,195 INFO L175 Difference]: Start difference. First operand has 508 places, 761 transitions, 13244 flow. Second operand 11 states and 159 transitions. [2024-06-14 13:10:09,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 518 places, 784 transitions, 14878 flow [2024-06-14 13:10:17,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 513 places, 784 transitions, 14369 flow, removed 33 selfloop flow, removed 5 redundant places. [2024-06-14 13:10:17,441 INFO L231 Difference]: Finished difference. Result has 514 places, 761 transitions, 12861 flow [2024-06-14 13:10:17,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=12735, PETRI_DIFFERENCE_MINUEND_PLACES=503, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=761, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=701, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12861, PETRI_PLACES=514, PETRI_TRANSITIONS=761} [2024-06-14 13:10:17,442 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 472 predicate places. [2024-06-14 13:10:17,442 INFO L495 AbstractCegarLoop]: Abstraction has has 514 places, 761 transitions, 12861 flow [2024-06-14 13:10:17,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:10:17,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:10:17,442 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:10:17,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-14 13:10:17,443 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:10:17,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:10:17,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1240687379, now seen corresponding path program 12 times [2024-06-14 13:10:17,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:10:17,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075904978] [2024-06-14 13:10:17,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:10:17,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:10:17,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:10:18,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:10:18,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:10:18,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075904978] [2024-06-14 13:10:18,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075904978] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:10:18,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:10:18,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:10:18,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294297983] [2024-06-14 13:10:18,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:10:18,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:10:18,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:10:18,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:10:18,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:10:18,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:10:18,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 514 places, 761 transitions, 12861 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:10:18,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:10:18,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:10:18,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:10:21,113 INFO L124 PetriNetUnfolderBase]: 5732/8740 cut-off events. [2024-06-14 13:10:21,113 INFO L125 PetriNetUnfolderBase]: For 1688830/1688832 co-relation queries the response was YES. [2024-06-14 13:10:21,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82616 conditions, 8740 events. 5732/8740 cut-off events. For 1688830/1688832 co-relation queries the response was YES. Maximal size of possible extension queue 572. Compared 52676 event pairs, 1231 based on Foata normal form. 6/8744 useless extension candidates. Maximal degree in co-relation 82387. Up to 8503 conditions per place. [2024-06-14 13:10:21,276 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 723 selfloop transitions, 96 changer transitions 0/822 dead transitions. [2024-06-14 13:10:21,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 523 places, 822 transitions, 15473 flow [2024-06-14 13:10:21,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:10:21,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:10:21,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 151 transitions. [2024-06-14 13:10:21,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36829268292682926 [2024-06-14 13:10:21,277 INFO L175 Difference]: Start difference. First operand has 514 places, 761 transitions, 12861 flow. Second operand 10 states and 151 transitions. [2024-06-14 13:10:21,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 523 places, 822 transitions, 15473 flow [2024-06-14 13:10:29,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 513 places, 822 transitions, 15325 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-14 13:10:29,669 INFO L231 Difference]: Finished difference. Result has 518 places, 797 transitions, 13907 flow [2024-06-14 13:10:29,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=12741, PETRI_DIFFERENCE_MINUEND_PLACES=504, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=761, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=665, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13907, PETRI_PLACES=518, PETRI_TRANSITIONS=797} [2024-06-14 13:10:29,685 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 476 predicate places. [2024-06-14 13:10:29,685 INFO L495 AbstractCegarLoop]: Abstraction has has 518 places, 797 transitions, 13907 flow [2024-06-14 13:10:29,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:10:29,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:10:29,685 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:10:29,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-14 13:10:29,685 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:10:29,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:10:29,686 INFO L85 PathProgramCache]: Analyzing trace with hash -146033225, now seen corresponding path program 6 times [2024-06-14 13:10:29,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:10:29,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256029484] [2024-06-14 13:10:29,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:10:29,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:10:29,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:10:30,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:10:30,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:10:30,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256029484] [2024-06-14 13:10:30,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256029484] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:10:30,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:10:30,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:10:30,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195106502] [2024-06-14 13:10:30,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:10:30,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:10:30,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:10:30,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:10:30,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:10:30,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:10:30,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 518 places, 797 transitions, 13907 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:10:30,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:10:30,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:10:30,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:10:33,637 INFO L124 PetriNetUnfolderBase]: 5720/8720 cut-off events. [2024-06-14 13:10:33,637 INFO L125 PetriNetUnfolderBase]: For 1685316/1685324 co-relation queries the response was YES. [2024-06-14 13:10:33,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82689 conditions, 8720 events. 5720/8720 cut-off events. For 1685316/1685324 co-relation queries the response was YES. Maximal size of possible extension queue 572. Compared 52494 event pairs, 1158 based on Foata normal form. 12/8730 useless extension candidates. Maximal degree in co-relation 82455. Up to 8342 conditions per place. [2024-06-14 13:10:33,993 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 697 selfloop transitions, 125 changer transitions 0/825 dead transitions. [2024-06-14 13:10:33,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 527 places, 825 transitions, 15881 flow [2024-06-14 13:10:33,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:10:33,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:10:33,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 160 transitions. [2024-06-14 13:10:33,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3902439024390244 [2024-06-14 13:10:33,995 INFO L175 Difference]: Start difference. First operand has 518 places, 797 transitions, 13907 flow. Second operand 10 states and 160 transitions. [2024-06-14 13:10:33,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 527 places, 825 transitions, 15881 flow [2024-06-14 13:10:42,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 523 places, 825 transitions, 15700 flow, removed 25 selfloop flow, removed 4 redundant places. [2024-06-14 13:10:42,061 INFO L231 Difference]: Finished difference. Result has 524 places, 797 transitions, 13982 flow [2024-06-14 13:10:42,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=13726, PETRI_DIFFERENCE_MINUEND_PLACES=514, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=797, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=672, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13982, PETRI_PLACES=524, PETRI_TRANSITIONS=797} [2024-06-14 13:10:42,061 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 482 predicate places. [2024-06-14 13:10:42,062 INFO L495 AbstractCegarLoop]: Abstraction has has 524 places, 797 transitions, 13982 flow [2024-06-14 13:10:42,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:10:42,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:10:42,062 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:10:42,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-14 13:10:42,062 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:10:42,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:10:42,062 INFO L85 PathProgramCache]: Analyzing trace with hash 902707311, now seen corresponding path program 1 times [2024-06-14 13:10:42,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:10:42,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859515307] [2024-06-14 13:10:42,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:10:42,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:10:42,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:10:43,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:10:43,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:10:43,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859515307] [2024-06-14 13:10:43,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859515307] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:10:43,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:10:43,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:10:43,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326027226] [2024-06-14 13:10:43,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:10:43,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:10:43,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:10:43,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:10:43,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:10:43,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:10:43,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 524 places, 797 transitions, 13982 flow. Second operand has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 11 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:10:43,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:10:43,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:10:43,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:10:46,627 INFO L124 PetriNetUnfolderBase]: 5764/8790 cut-off events. [2024-06-14 13:10:46,628 INFO L125 PetriNetUnfolderBase]: For 1774340/1774340 co-relation queries the response was YES. [2024-06-14 13:10:46,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83402 conditions, 8790 events. 5764/8790 cut-off events. For 1774340/1774340 co-relation queries the response was YES. Maximal size of possible extension queue 578. Compared 52978 event pairs, 1185 based on Foata normal form. 12/8800 useless extension candidates. Maximal degree in co-relation 83167. Up to 8411 conditions per place. [2024-06-14 13:10:46,800 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 708 selfloop transitions, 115 changer transitions 0/826 dead transitions. [2024-06-14 13:10:46,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 532 places, 826 transitions, 15791 flow [2024-06-14 13:10:46,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:10:46,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:10:46,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 148 transitions. [2024-06-14 13:10:46,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4010840108401084 [2024-06-14 13:10:46,801 INFO L175 Difference]: Start difference. First operand has 524 places, 797 transitions, 13982 flow. Second operand 9 states and 148 transitions. [2024-06-14 13:10:46,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 532 places, 826 transitions, 15791 flow [2024-06-14 13:10:56,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 523 places, 826 transitions, 15541 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-14 13:10:56,645 INFO L231 Difference]: Finished difference. Result has 524 places, 799 transitions, 14025 flow [2024-06-14 13:10:56,645 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=13732, PETRI_DIFFERENCE_MINUEND_PLACES=515, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=797, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=682, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=14025, PETRI_PLACES=524, PETRI_TRANSITIONS=799} [2024-06-14 13:10:56,645 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 482 predicate places. [2024-06-14 13:10:56,645 INFO L495 AbstractCegarLoop]: Abstraction has has 524 places, 799 transitions, 14025 flow [2024-06-14 13:10:56,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 11 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:10:56,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:10:56,646 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:10:56,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-14 13:10:56,646 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:10:56,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:10:56,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1244498705, now seen corresponding path program 4 times [2024-06-14 13:10:56,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:10:56,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367764955] [2024-06-14 13:10:56,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:10:56,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:10:56,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:10:57,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:10:57,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:10:57,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367764955] [2024-06-14 13:10:57,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367764955] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:10:57,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:10:57,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:10:57,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69456536] [2024-06-14 13:10:57,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:10:57,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:10:57,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:10:57,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:10:57,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:10:57,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:10:57,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 524 places, 799 transitions, 14025 flow. Second operand has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:10:57,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:10:57,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:10:57,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:11:00,963 INFO L124 PetriNetUnfolderBase]: 5882/8972 cut-off events. [2024-06-14 13:11:00,963 INFO L125 PetriNetUnfolderBase]: For 1833686/1833686 co-relation queries the response was YES. [2024-06-14 13:11:01,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85803 conditions, 8972 events. 5882/8972 cut-off events. For 1833686/1833686 co-relation queries the response was YES. Maximal size of possible extension queue 583. Compared 54229 event pairs, 1197 based on Foata normal form. 8/8978 useless extension candidates. Maximal degree in co-relation 85567. Up to 8451 conditions per place. [2024-06-14 13:11:01,246 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 721 selfloop transitions, 113 changer transitions 0/837 dead transitions. [2024-06-14 13:11:01,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 532 places, 837 transitions, 16194 flow [2024-06-14 13:11:01,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:11:01,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:11:01,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-06-14 13:11:01,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4065040650406504 [2024-06-14 13:11:01,247 INFO L175 Difference]: Start difference. First operand has 524 places, 799 transitions, 14025 flow. Second operand 9 states and 150 transitions. [2024-06-14 13:11:01,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 532 places, 837 transitions, 16194 flow [2024-06-14 13:11:10,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 527 places, 837 transitions, 15980 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-14 13:11:10,562 INFO L231 Difference]: Finished difference. Result has 529 places, 804 transitions, 14149 flow [2024-06-14 13:11:10,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=13811, PETRI_DIFFERENCE_MINUEND_PLACES=519, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=799, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=687, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=14149, PETRI_PLACES=529, PETRI_TRANSITIONS=804} [2024-06-14 13:11:10,562 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 487 predicate places. [2024-06-14 13:11:10,562 INFO L495 AbstractCegarLoop]: Abstraction has has 529 places, 804 transitions, 14149 flow [2024-06-14 13:11:10,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:11:10,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:11:10,563 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:11:10,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-14 13:11:10,563 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:11:10,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:11:10,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1233060821, now seen corresponding path program 2 times [2024-06-14 13:11:10,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:11:10,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371088696] [2024-06-14 13:11:10,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:11:10,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:11:10,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:11:11,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:11:11,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:11:11,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371088696] [2024-06-14 13:11:11,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371088696] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:11:11,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:11:11,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:11:11,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412330864] [2024-06-14 13:11:11,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:11:11,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:11:11,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:11:11,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:11:11,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:11:11,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:11:11,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 529 places, 804 transitions, 14149 flow. Second operand has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 11 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:11:11,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:11:11,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:11:11,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:11:14,937 INFO L124 PetriNetUnfolderBase]: 5877/8965 cut-off events. [2024-06-14 13:11:14,938 INFO L125 PetriNetUnfolderBase]: For 1800087/1800087 co-relation queries the response was YES. [2024-06-14 13:11:15,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85857 conditions, 8965 events. 5877/8965 cut-off events. For 1800087/1800087 co-relation queries the response was YES. Maximal size of possible extension queue 583. Compared 54206 event pairs, 1179 based on Foata normal form. 2/8965 useless extension candidates. Maximal degree in co-relation 85619. Up to 8634 conditions per place. [2024-06-14 13:11:15,097 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 703 selfloop transitions, 123 changer transitions 0/829 dead transitions. [2024-06-14 13:11:15,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 537 places, 829 transitions, 15931 flow [2024-06-14 13:11:15,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:11:15,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:11:15,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 143 transitions. [2024-06-14 13:11:15,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875338753387534 [2024-06-14 13:11:15,098 INFO L175 Difference]: Start difference. First operand has 529 places, 804 transitions, 14149 flow. Second operand 9 states and 143 transitions. [2024-06-14 13:11:15,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 537 places, 829 transitions, 15931 flow [2024-06-14 13:11:23,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 532 places, 829 transitions, 15813 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-14 13:11:23,850 INFO L231 Difference]: Finished difference. Result has 533 places, 806 transitions, 14343 flow [2024-06-14 13:11:23,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=14033, PETRI_DIFFERENCE_MINUEND_PLACES=524, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=804, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=681, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=14343, PETRI_PLACES=533, PETRI_TRANSITIONS=806} [2024-06-14 13:11:23,850 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 491 predicate places. [2024-06-14 13:11:23,850 INFO L495 AbstractCegarLoop]: Abstraction has has 533 places, 806 transitions, 14343 flow [2024-06-14 13:11:23,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 11 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:11:23,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:11:23,851 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:11:23,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-14 13:11:23,864 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:11:23,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:11:23,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1233047801, now seen corresponding path program 3 times [2024-06-14 13:11:23,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:11:23,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156446523] [2024-06-14 13:11:23,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:11:23,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:11:23,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:11:25,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:11:25,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:11:25,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156446523] [2024-06-14 13:11:25,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156446523] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:11:25,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:11:25,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:11:25,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886598875] [2024-06-14 13:11:25,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:11:25,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:11:25,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:11:25,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:11:25,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:11:25,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:11:25,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 533 places, 806 transitions, 14343 flow. Second operand has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 11 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:11:25,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:11:25,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:11:25,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:11:28,429 INFO L124 PetriNetUnfolderBase]: 5885/8977 cut-off events. [2024-06-14 13:11:28,430 INFO L125 PetriNetUnfolderBase]: For 1835429/1835429 co-relation queries the response was YES. [2024-06-14 13:11:28,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86507 conditions, 8977 events. 5885/8977 cut-off events. For 1835429/1835429 co-relation queries the response was YES. Maximal size of possible extension queue 584. Compared 54254 event pairs, 1193 based on Foata normal form. 2/8977 useless extension candidates. Maximal degree in co-relation 86267. Up to 8518 conditions per place. [2024-06-14 13:11:28,601 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 705 selfloop transitions, 129 changer transitions 0/837 dead transitions. [2024-06-14 13:11:28,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 541 places, 837 transitions, 16187 flow [2024-06-14 13:11:28,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:11:28,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:11:28,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 147 transitions. [2024-06-14 13:11:28,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3983739837398374 [2024-06-14 13:11:28,602 INFO L175 Difference]: Start difference. First operand has 533 places, 806 transitions, 14343 flow. Second operand 9 states and 147 transitions. [2024-06-14 13:11:28,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 541 places, 837 transitions, 16187 flow [2024-06-14 13:11:39,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 537 places, 837 transitions, 15997 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-06-14 13:11:39,100 INFO L231 Difference]: Finished difference. Result has 539 places, 810 transitions, 14510 flow [2024-06-14 13:11:39,100 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=14153, PETRI_DIFFERENCE_MINUEND_PLACES=529, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=806, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=678, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=14510, PETRI_PLACES=539, PETRI_TRANSITIONS=810} [2024-06-14 13:11:39,100 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 497 predicate places. [2024-06-14 13:11:39,101 INFO L495 AbstractCegarLoop]: Abstraction has has 539 places, 810 transitions, 14510 flow [2024-06-14 13:11:39,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 11 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:11:39,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:11:39,101 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:11:39,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-14 13:11:39,101 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:11:39,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:11:39,102 INFO L85 PathProgramCache]: Analyzing trace with hash -716815453, now seen corresponding path program 13 times [2024-06-14 13:11:39,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:11:39,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013887278] [2024-06-14 13:11:39,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:11:39,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:11:39,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:11:39,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:11:39,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:11:39,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013887278] [2024-06-14 13:11:39,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013887278] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:11:39,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:11:39,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:11:39,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197969503] [2024-06-14 13:11:39,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:11:39,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:11:39,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:11:39,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:11:39,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:11:39,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:11:39,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 539 places, 810 transitions, 14510 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:11:39,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:11:39,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:11:39,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:11:43,165 INFO L124 PetriNetUnfolderBase]: 5911/9015 cut-off events. [2024-06-14 13:11:43,165 INFO L125 PetriNetUnfolderBase]: For 1881951/1881953 co-relation queries the response was YES. [2024-06-14 13:11:43,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87655 conditions, 9015 events. 5911/9015 cut-off events. For 1881951/1881953 co-relation queries the response was YES. Maximal size of possible extension queue 589. Compared 54609 event pairs, 1310 based on Foata normal form. 4/9017 useless extension candidates. Maximal degree in co-relation 87413. Up to 8874 conditions per place. [2024-06-14 13:11:43,336 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 797 selfloop transitions, 39 changer transitions 0/839 dead transitions. [2024-06-14 13:11:43,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 546 places, 839 transitions, 16668 flow [2024-06-14 13:11:43,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:11:43,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:11:43,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 128 transitions. [2024-06-14 13:11:43,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3902439024390244 [2024-06-14 13:11:43,338 INFO L175 Difference]: Start difference. First operand has 539 places, 810 transitions, 14510 flow. Second operand 8 states and 128 transitions. [2024-06-14 13:11:43,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 546 places, 839 transitions, 16668 flow [2024-06-14 13:11:52,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 541 places, 839 transitions, 16495 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-14 13:11:52,866 INFO L231 Difference]: Finished difference. Result has 542 places, 816 transitions, 14595 flow [2024-06-14 13:11:52,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=14337, PETRI_DIFFERENCE_MINUEND_PLACES=534, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=810, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=774, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14595, PETRI_PLACES=542, PETRI_TRANSITIONS=816} [2024-06-14 13:11:52,867 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 500 predicate places. [2024-06-14 13:11:52,867 INFO L495 AbstractCegarLoop]: Abstraction has has 542 places, 816 transitions, 14595 flow [2024-06-14 13:11:52,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:11:52,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:11:52,867 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:11:52,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-14 13:11:52,868 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:11:52,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:11:52,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1204326153, now seen corresponding path program 7 times [2024-06-14 13:11:52,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:11:52,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974330997] [2024-06-14 13:11:52,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:11:52,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:11:52,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:11:53,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:11:53,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:11:53,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974330997] [2024-06-14 13:11:53,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974330997] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:11:53,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:11:53,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:11:53,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387502109] [2024-06-14 13:11:53,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:11:53,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:11:53,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:11:53,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:11:53,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:11:53,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:11:53,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 542 places, 816 transitions, 14595 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:11:53,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:11:53,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:11:53,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:11:57,221 INFO L124 PetriNetUnfolderBase]: 5975/9104 cut-off events. [2024-06-14 13:11:57,221 INFO L125 PetriNetUnfolderBase]: For 1969478/1969480 co-relation queries the response was YES. [2024-06-14 13:11:57,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89346 conditions, 9104 events. 5975/9104 cut-off events. For 1969478/1969480 co-relation queries the response was YES. Maximal size of possible extension queue 596. Compared 55184 event pairs, 1325 based on Foata normal form. 6/9108 useless extension candidates. Maximal degree in co-relation 89102. Up to 8838 conditions per place. [2024-06-14 13:11:57,379 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 791 selfloop transitions, 57 changer transitions 0/851 dead transitions. [2024-06-14 13:11:57,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 549 places, 851 transitions, 17111 flow [2024-06-14 13:11:57,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:11:57,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:11:57,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 133 transitions. [2024-06-14 13:11:57,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4054878048780488 [2024-06-14 13:11:57,380 INFO L175 Difference]: Start difference. First operand has 542 places, 816 transitions, 14595 flow. Second operand 8 states and 133 transitions. [2024-06-14 13:11:57,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 549 places, 851 transitions, 17111 flow [2024-06-14 13:12:06,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 545 places, 851 transitions, 16973 flow, removed 51 selfloop flow, removed 4 redundant places. [2024-06-14 13:12:06,454 INFO L231 Difference]: Finished difference. Result has 547 places, 825 transitions, 14804 flow [2024-06-14 13:12:06,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=14457, PETRI_DIFFERENCE_MINUEND_PLACES=538, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=816, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=764, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14804, PETRI_PLACES=547, PETRI_TRANSITIONS=825} [2024-06-14 13:12:06,454 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 505 predicate places. [2024-06-14 13:12:06,454 INFO L495 AbstractCegarLoop]: Abstraction has has 547 places, 825 transitions, 14804 flow [2024-06-14 13:12:06,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:12:06,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:12:06,455 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:12:06,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-14 13:12:06,455 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:12:06,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:12:06,455 INFO L85 PathProgramCache]: Analyzing trace with hash 320373887, now seen corresponding path program 14 times [2024-06-14 13:12:06,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:12:06,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975149291] [2024-06-14 13:12:06,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:12:06,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:12:06,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:12:07,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:12:07,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:12:07,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975149291] [2024-06-14 13:12:07,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975149291] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:12:07,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:12:07,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:12:07,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742476087] [2024-06-14 13:12:07,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:12:07,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:12:07,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:12:07,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:12:07,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:12:07,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:12:07,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 547 places, 825 transitions, 14804 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:12:07,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:12:07,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:12:07,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:12:10,532 INFO L124 PetriNetUnfolderBase]: 6017/9159 cut-off events. [2024-06-14 13:12:10,532 INFO L125 PetriNetUnfolderBase]: For 2012732/2012736 co-relation queries the response was YES. [2024-06-14 13:12:10,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90852 conditions, 9159 events. 6017/9159 cut-off events. For 2012732/2012736 co-relation queries the response was YES. Maximal size of possible extension queue 603. Compared 55489 event pairs, 1277 based on Foata normal form. 4/9161 useless extension candidates. Maximal degree in co-relation 90605. Up to 8774 conditions per place. [2024-06-14 13:12:10,711 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 754 selfloop transitions, 106 changer transitions 0/863 dead transitions. [2024-06-14 13:12:10,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 554 places, 863 transitions, 17614 flow [2024-06-14 13:12:10,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:12:10,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:12:10,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-14 13:12:10,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42378048780487804 [2024-06-14 13:12:10,713 INFO L175 Difference]: Start difference. First operand has 547 places, 825 transitions, 14804 flow. Second operand 8 states and 139 transitions. [2024-06-14 13:12:10,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 554 places, 863 transitions, 17614 flow [2024-06-14 13:12:18,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 551 places, 863 transitions, 17478 flow, removed 48 selfloop flow, removed 3 redundant places. [2024-06-14 13:12:18,836 INFO L231 Difference]: Finished difference. Result has 552 places, 834 transitions, 15126 flow [2024-06-14 13:12:18,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=14668, PETRI_DIFFERENCE_MINUEND_PLACES=544, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=825, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=728, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15126, PETRI_PLACES=552, PETRI_TRANSITIONS=834} [2024-06-14 13:12:18,836 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 510 predicate places. [2024-06-14 13:12:18,837 INFO L495 AbstractCegarLoop]: Abstraction has has 552 places, 834 transitions, 15126 flow [2024-06-14 13:12:18,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:12:18,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:12:18,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:12:18,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-14 13:12:18,837 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:12:18,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:12:18,838 INFO L85 PathProgramCache]: Analyzing trace with hash 2143163987, now seen corresponding path program 15 times [2024-06-14 13:12:18,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:12:18,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877924152] [2024-06-14 13:12:18,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:12:18,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:12:18,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:12:19,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:12:19,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:12:19,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877924152] [2024-06-14 13:12:19,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877924152] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:12:19,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:12:19,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:12:19,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399591648] [2024-06-14 13:12:19,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:12:19,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:12:19,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:12:19,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:12:19,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:12:19,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:12:19,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 552 places, 834 transitions, 15126 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:12:19,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:12:19,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:12:19,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:12:23,232 INFO L124 PetriNetUnfolderBase]: 6027/9176 cut-off events. [2024-06-14 13:12:23,232 INFO L125 PetriNetUnfolderBase]: For 2044200/2044202 co-relation queries the response was YES. [2024-06-14 13:12:23,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91301 conditions, 9176 events. 6027/9176 cut-off events. For 2044200/2044202 co-relation queries the response was YES. Maximal size of possible extension queue 605. Compared 55596 event pairs, 1342 based on Foata normal form. 4/9178 useless extension candidates. Maximal degree in co-relation 91052. Up to 9031 conditions per place. [2024-06-14 13:12:23,584 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 814 selfloop transitions, 40 changer transitions 0/857 dead transitions. [2024-06-14 13:12:23,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 559 places, 857 transitions, 17216 flow [2024-06-14 13:12:23,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:12:23,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:12:23,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 126 transitions. [2024-06-14 13:12:23,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38414634146341464 [2024-06-14 13:12:23,585 INFO L175 Difference]: Start difference. First operand has 552 places, 834 transitions, 15126 flow. Second operand 8 states and 126 transitions. [2024-06-14 13:12:23,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 559 places, 857 transitions, 17216 flow [2024-06-14 13:12:33,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 553 places, 857 transitions, 16856 flow, removed 68 selfloop flow, removed 6 redundant places. [2024-06-14 13:12:33,602 INFO L231 Difference]: Finished difference. Result has 554 places, 837 transitions, 14918 flow [2024-06-14 13:12:33,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=14775, PETRI_DIFFERENCE_MINUEND_PLACES=546, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=834, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=797, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14918, PETRI_PLACES=554, PETRI_TRANSITIONS=837} [2024-06-14 13:12:33,603 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 512 predicate places. [2024-06-14 13:12:33,603 INFO L495 AbstractCegarLoop]: Abstraction has has 554 places, 837 transitions, 14918 flow [2024-06-14 13:12:33,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:12:33,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:12:33,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:12:33,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-14 13:12:33,604 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:12:33,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:12:33,604 INFO L85 PathProgramCache]: Analyzing trace with hash -947916008, now seen corresponding path program 1 times [2024-06-14 13:12:33,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:12:33,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434460685] [2024-06-14 13:12:33,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:12:33,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:12:33,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:12:34,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:12:34,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:12:34,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434460685] [2024-06-14 13:12:34,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434460685] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:12:34,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:12:34,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:12:34,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030090186] [2024-06-14 13:12:34,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:12:34,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:12:34,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:12:34,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:12:34,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:12:34,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-14 13:12:34,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 554 places, 837 transitions, 14918 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:12:34,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:12:34,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-14 13:12:34,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:12:37,958 INFO L124 PetriNetUnfolderBase]: 6020/9165 cut-off events. [2024-06-14 13:12:37,958 INFO L125 PetriNetUnfolderBase]: For 2054022/2054022 co-relation queries the response was YES. [2024-06-14 13:12:38,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90669 conditions, 9165 events. 6020/9165 cut-off events. For 2054022/2054022 co-relation queries the response was YES. Maximal size of possible extension queue 605. Compared 55525 event pairs, 1335 based on Foata normal form. 1/9164 useless extension candidates. Maximal degree in co-relation 90421. Up to 9040 conditions per place. [2024-06-14 13:12:38,422 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 813 selfloop transitions, 47 changer transitions 0/863 dead transitions. [2024-06-14 13:12:38,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 562 places, 863 transitions, 17048 flow [2024-06-14 13:12:38,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:12:38,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:12:38,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 135 transitions. [2024-06-14 13:12:38,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36585365853658536 [2024-06-14 13:12:38,424 INFO L175 Difference]: Start difference. First operand has 554 places, 837 transitions, 14918 flow. Second operand 9 states and 135 transitions. [2024-06-14 13:12:38,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 562 places, 863 transitions, 17048 flow