./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix012_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix012_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix012_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix012_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 01:22:30,587 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 01:22:30,658 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 01:22:30,661 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 01:22:30,661 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 01:22:30,683 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 01:22:30,686 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 01:22:30,686 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 01:22:30,687 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 01:22:30,690 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 01:22:30,690 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 01:22:30,691 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 01:22:30,691 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 01:22:30,692 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 01:22:30,693 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 01:22:30,693 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 01:22:30,693 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 01:22:30,693 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 01:22:30,693 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 01:22:30,694 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 01:22:30,694 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 01:22:30,694 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 01:22:30,694 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 01:22:30,695 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 01:22:30,695 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 01:22:30,695 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 01:22:30,695 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 01:22:30,695 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 01:22:30,696 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 01:22:30,696 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 01:22:30,697 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 01:22:30,697 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 01:22:30,697 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:22:30,697 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 01:22:30,698 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 01:22:30,698 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 01:22:30,698 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 01:22:30,698 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 01:22:30,698 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 01:22:30,698 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 01:22:30,699 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 01:22:30,699 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 01:22:30,699 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 01:22:30,699 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 01:22:30,923 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 01:22:30,946 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 01:22:30,948 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 01:22:30,949 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 01:22:30,949 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 01:22:30,950 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix012_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.i [2024-06-28 01:22:32,021 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 01:22:32,224 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 01:22:32,225 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix012_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.i [2024-06-28 01:22:32,244 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51793d93c/2d30dd031a704b898381284f55b87387/FLAGcf2862ec8 [2024-06-28 01:22:32,254 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51793d93c/2d30dd031a704b898381284f55b87387 [2024-06-28 01:22:32,256 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 01:22:32,256 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 01:22:32,257 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix012_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.yml/witness.yml [2024-06-28 01:22:32,387 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 01:22:32,389 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 01:22:32,389 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 01:22:32,389 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 01:22:32,393 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 01:22:32,394 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:22:32" (1/2) ... [2024-06-28 01:22:32,395 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6867fd91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:22:32, skipping insertion in model container [2024-06-28 01:22:32,395 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:22:32" (1/2) ... [2024-06-28 01:22:32,396 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@43565099 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:22:32, skipping insertion in model container [2024-06-28 01:22:32,396 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:22:32" (2/2) ... [2024-06-28 01:22:32,396 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6867fd91 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:22:32, skipping insertion in model container [2024-06-28 01:22:32,396 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:22:32" (2/2) ... [2024-06-28 01:22:32,397 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 01:22:32,448 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 01:22:32,449 INFO L97 edCorrectnessWitness]: Location invariant before [L816-L816] (((((((((((((((! multithreaded || y$read_delayed == (_Bool)0) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (y$mem_tmp == 0 || y$mem_tmp == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-28 01:22:32,450 INFO L97 edCorrectnessWitness]: Location invariant before [L815-L815] (((((((((((((((! multithreaded || y$read_delayed == (_Bool)0) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (y$mem_tmp == 0 || y$mem_tmp == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-28 01:22:32,450 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 01:22:32,450 INFO L106 edCorrectnessWitness]: ghost_update [L813-L813] multithreaded = 1; [2024-06-28 01:22:32,489 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 01:22:32,642 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix012_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.i[996,1009] [2024-06-28 01:22:32,755 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:22:32,763 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 01:22:32,807 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix012_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.i[996,1009] Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:22:32,857 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:22:32,886 INFO L206 MainTranslator]: Completed translation [2024-06-28 01:22:32,887 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:22:32 WrapperNode [2024-06-28 01:22:32,887 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 01:22:32,888 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 01:22:32,888 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 01:22:32,888 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 01:22:32,893 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:22:32" (1/1) ... [2024-06-28 01:22:32,920 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:22:32" (1/1) ... [2024-06-28 01:22:32,956 INFO L138 Inliner]: procedures = 174, calls = 35, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 110 [2024-06-28 01:22:32,957 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 01:22:32,957 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 01:22:32,958 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 01:22:32,958 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 01:22:32,973 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:22:32" (1/1) ... [2024-06-28 01:22:32,973 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:22:32" (1/1) ... [2024-06-28 01:22:32,977 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:22:32" (1/1) ... [2024-06-28 01:22:32,990 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-28 01:22:32,990 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:22:32" (1/1) ... [2024-06-28 01:22:32,990 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:22:32" (1/1) ... [2024-06-28 01:22:33,001 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:22:32" (1/1) ... [2024-06-28 01:22:33,002 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:22:32" (1/1) ... [2024-06-28 01:22:33,004 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:22:32" (1/1) ... [2024-06-28 01:22:33,007 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:22:32" (1/1) ... [2024-06-28 01:22:33,010 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 01:22:33,010 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 01:22:33,010 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 01:22:33,010 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 01:22:33,011 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:22:32" (1/1) ... [2024-06-28 01:22:33,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:22:33,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:22:33,036 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-28 01:22:33,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-28 01:22:33,076 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 01:22:33,077 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 01:22:33,077 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 01:22:33,077 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 01:22:33,077 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 01:22:33,078 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 01:22:33,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 01:22:33,078 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 01:22:33,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 01:22:33,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 01:22:33,079 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 01:22:33,211 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 01:22:33,213 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 01:22:33,517 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 01:22:33,517 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 01:22:33,644 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 01:22:33,645 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 01:22:33,645 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:22:33 BoogieIcfgContainer [2024-06-28 01:22:33,645 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 01:22:33,647 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 01:22:33,647 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 01:22:33,649 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 01:22:33,649 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 01:22:32" (1/4) ... [2024-06-28 01:22:33,650 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@474c3107 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:22:33, skipping insertion in model container [2024-06-28 01:22:33,650 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:22:32" (2/4) ... [2024-06-28 01:22:33,653 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@474c3107 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:22:33, skipping insertion in model container [2024-06-28 01:22:33,654 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:22:32" (3/4) ... [2024-06-28 01:22:33,654 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@474c3107 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:22:33, skipping insertion in model container [2024-06-28 01:22:33,654 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:22:33" (4/4) ... [2024-06-28 01:22:33,655 INFO L112 eAbstractionObserver]: Analyzing ICFG mix012_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.i [2024-06-28 01:22:33,668 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 01:22:33,668 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-28 01:22:33,668 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 01:22:33,697 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 01:22:33,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 42 places, 36 transitions, 80 flow [2024-06-28 01:22:33,776 INFO L124 PetriNetUnfolderBase]: 1/34 cut-off events. [2024-06-28 01:22:33,776 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:22:33,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 34 events. 1/34 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 48 event pairs, 0 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2024-06-28 01:22:33,778 INFO L82 GeneralOperation]: Start removeDead. Operand has 42 places, 36 transitions, 80 flow [2024-06-28 01:22:33,780 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 34 transitions, 74 flow [2024-06-28 01:22:33,796 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 01:22:33,801 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;@7fbba8b9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 01:22:33,801 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-28 01:22:33,811 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 01:22:33,811 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 01:22:33,812 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:22:33,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:33,812 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:22:33,813 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:33,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:33,817 INFO L85 PathProgramCache]: Analyzing trace with hash 313000328, now seen corresponding path program 1 times [2024-06-28 01:22:33,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:33,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888414338] [2024-06-28 01:22:33,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:33,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:33,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:34,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:34,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:34,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888414338] [2024-06-28 01:22:34,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888414338] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:34,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:34,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:22:34,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854957648] [2024-06-28 01:22:34,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:34,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:22:34,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:34,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:22:34,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:22:34,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 36 [2024-06-28 01:22:34,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 34 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:34,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:34,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 36 [2024-06-28 01:22:34,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:34,769 INFO L124 PetriNetUnfolderBase]: 400/723 cut-off events. [2024-06-28 01:22:34,769 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-28 01:22:34,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1416 conditions, 723 events. 400/723 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3664 event pairs, 140 based on Foata normal form. 37/706 useless extension candidates. Maximal degree in co-relation 1405. Up to 666 conditions per place. [2024-06-28 01:22:34,775 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 29 selfloop transitions, 4 changer transitions 0/44 dead transitions. [2024-06-28 01:22:34,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 44 transitions, 163 flow [2024-06-28 01:22:34,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:22:34,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:22:34,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 76 transitions. [2024-06-28 01:22:34,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7037037037037037 [2024-06-28 01:22:34,785 INFO L175 Difference]: Start difference. First operand has 40 places, 34 transitions, 74 flow. Second operand 3 states and 76 transitions. [2024-06-28 01:22:34,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 44 transitions, 163 flow [2024-06-28 01:22:34,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 44 transitions, 160 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:22:34,789 INFO L231 Difference]: Finished difference. Result has 41 places, 36 transitions, 98 flow [2024-06-28 01:22:34,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=41, PETRI_TRANSITIONS=36} [2024-06-28 01:22:34,793 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2024-06-28 01:22:34,793 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 36 transitions, 98 flow [2024-06-28 01:22:34,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:34,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:34,794 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:22:34,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 01:22:34,794 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:34,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:34,795 INFO L85 PathProgramCache]: Analyzing trace with hash 313000574, now seen corresponding path program 1 times [2024-06-28 01:22:34,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:34,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774716547] [2024-06-28 01:22:34,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:34,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:34,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:34,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:34,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:34,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774716547] [2024-06-28 01:22:34,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774716547] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:34,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:34,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:22:34,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525777849] [2024-06-28 01:22:34,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:34,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:22:34,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:34,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:22:34,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:22:34,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 36 [2024-06-28 01:22:34,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 36 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:34,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:34,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 36 [2024-06-28 01:22:34,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:34,905 INFO L124 PetriNetUnfolderBase]: 152/358 cut-off events. [2024-06-28 01:22:34,906 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2024-06-28 01:22:34,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 702 conditions, 358 events. 152/358 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1851 event pairs, 52 based on Foata normal form. 0/342 useless extension candidates. Maximal degree in co-relation 690. Up to 227 conditions per place. [2024-06-28 01:22:34,908 INFO L140 encePairwiseOnDemand]: 33/36 looper letters, 23 selfloop transitions, 3 changer transitions 2/45 dead transitions. [2024-06-28 01:22:34,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 45 transitions, 169 flow [2024-06-28 01:22:34,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:22:34,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:22:34,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 82 transitions. [2024-06-28 01:22:34,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7592592592592593 [2024-06-28 01:22:34,910 INFO L175 Difference]: Start difference. First operand has 41 places, 36 transitions, 98 flow. Second operand 3 states and 82 transitions. [2024-06-28 01:22:34,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 45 transitions, 169 flow [2024-06-28 01:22:34,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 45 transitions, 166 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:22:34,911 INFO L231 Difference]: Finished difference. Result has 41 places, 33 transitions, 90 flow [2024-06-28 01:22:34,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=41, PETRI_TRANSITIONS=33} [2024-06-28 01:22:34,912 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2024-06-28 01:22:34,912 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 33 transitions, 90 flow [2024-06-28 01:22:34,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:34,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:34,912 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:34,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 01:22:34,913 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:34,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:34,913 INFO L85 PathProgramCache]: Analyzing trace with hash 145641030, now seen corresponding path program 1 times [2024-06-28 01:22:34,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:34,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633871237] [2024-06-28 01:22:34,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:34,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:34,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:35,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:35,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:35,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633871237] [2024-06-28 01:22:35,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633871237] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:35,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:35,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 01:22:35,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392781177] [2024-06-28 01:22:35,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:35,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:22:35,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:35,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:22:35,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:22:35,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 36 [2024-06-28 01:22:35,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 33 transitions, 90 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:35,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:35,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 36 [2024-06-28 01:22:35,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:35,437 INFO L124 PetriNetUnfolderBase]: 278/606 cut-off events. [2024-06-28 01:22:35,437 INFO L125 PetriNetUnfolderBase]: For 154/154 co-relation queries the response was YES. [2024-06-28 01:22:35,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1238 conditions, 606 events. 278/606 cut-off events. For 154/154 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 3185 event pairs, 163 based on Foata normal form. 2/581 useless extension candidates. Maximal degree in co-relation 1225. Up to 458 conditions per place. [2024-06-28 01:22:35,442 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 33 selfloop transitions, 6 changer transitions 0/50 dead transitions. [2024-06-28 01:22:35,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 50 transitions, 214 flow [2024-06-28 01:22:35,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:22:35,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:22:35,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 91 transitions. [2024-06-28 01:22:35,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6319444444444444 [2024-06-28 01:22:35,446 INFO L175 Difference]: Start difference. First operand has 41 places, 33 transitions, 90 flow. Second operand 4 states and 91 transitions. [2024-06-28 01:22:35,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 50 transitions, 214 flow [2024-06-28 01:22:35,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 50 transitions, 206 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:22:35,448 INFO L231 Difference]: Finished difference. Result has 43 places, 38 transitions, 133 flow [2024-06-28 01:22:35,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=133, PETRI_PLACES=43, PETRI_TRANSITIONS=38} [2024-06-28 01:22:35,449 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 3 predicate places. [2024-06-28 01:22:35,449 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 38 transitions, 133 flow [2024-06-28 01:22:35,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:35,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:35,450 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:35,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 01:22:35,450 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:35,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:35,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1772851451, now seen corresponding path program 1 times [2024-06-28 01:22:35,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:35,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924362150] [2024-06-28 01:22:35,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:35,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:35,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:36,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:36,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:36,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924362150] [2024-06-28 01:22:36,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924362150] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:36,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:36,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:22:36,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921344464] [2024-06-28 01:22:36,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:36,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:22:36,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:36,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:22:36,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:22:36,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2024-06-28 01:22:36,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 38 transitions, 133 flow. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:36,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:36,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2024-06-28 01:22:36,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:36,344 INFO L124 PetriNetUnfolderBase]: 339/635 cut-off events. [2024-06-28 01:22:36,345 INFO L125 PetriNetUnfolderBase]: For 285/285 co-relation queries the response was YES. [2024-06-28 01:22:36,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1523 conditions, 635 events. 339/635 cut-off events. For 285/285 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3117 event pairs, 66 based on Foata normal form. 2/629 useless extension candidates. Maximal degree in co-relation 1508. Up to 517 conditions per place. [2024-06-28 01:22:36,348 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 48 selfloop transitions, 14 changer transitions 0/72 dead transitions. [2024-06-28 01:22:36,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 72 transitions, 358 flow [2024-06-28 01:22:36,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:22:36,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:22:36,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 131 transitions. [2024-06-28 01:22:36,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6064814814814815 [2024-06-28 01:22:36,350 INFO L175 Difference]: Start difference. First operand has 43 places, 38 transitions, 133 flow. Second operand 6 states and 131 transitions. [2024-06-28 01:22:36,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 72 transitions, 358 flow [2024-06-28 01:22:36,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 72 transitions, 348 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-06-28 01:22:36,352 INFO L231 Difference]: Finished difference. Result has 50 places, 45 transitions, 210 flow [2024-06-28 01:22:36,352 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=210, PETRI_PLACES=50, PETRI_TRANSITIONS=45} [2024-06-28 01:22:36,353 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 10 predicate places. [2024-06-28 01:22:36,353 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 45 transitions, 210 flow [2024-06-28 01:22:36,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:36,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:36,353 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:36,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 01:22:36,354 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:36,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:36,354 INFO L85 PathProgramCache]: Analyzing trace with hash 876181162, now seen corresponding path program 1 times [2024-06-28 01:22:36,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:36,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847442368] [2024-06-28 01:22:36,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:36,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:36,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:37,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:37,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:37,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847442368] [2024-06-28 01:22:37,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847442368] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:37,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:37,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:22:37,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048434200] [2024-06-28 01:22:37,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:37,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:22:37,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:37,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:22:37,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:22:37,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2024-06-28 01:22:37,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 45 transitions, 210 flow. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:37,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:37,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2024-06-28 01:22:37,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:37,315 INFO L124 PetriNetUnfolderBase]: 335/625 cut-off events. [2024-06-28 01:22:37,316 INFO L125 PetriNetUnfolderBase]: For 568/568 co-relation queries the response was YES. [2024-06-28 01:22:37,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1702 conditions, 625 events. 335/625 cut-off events. For 568/568 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3050 event pairs, 32 based on Foata normal form. 4/621 useless extension candidates. Maximal degree in co-relation 1683. Up to 479 conditions per place. [2024-06-28 01:22:37,319 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 51 selfloop transitions, 15 changer transitions 0/76 dead transitions. [2024-06-28 01:22:37,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 76 transitions, 414 flow [2024-06-28 01:22:37,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:22:37,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:22:37,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 147 transitions. [2024-06-28 01:22:37,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-06-28 01:22:37,321 INFO L175 Difference]: Start difference. First operand has 50 places, 45 transitions, 210 flow. Second operand 7 states and 147 transitions. [2024-06-28 01:22:37,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 76 transitions, 414 flow [2024-06-28 01:22:37,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 76 transitions, 401 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-06-28 01:22:37,324 INFO L231 Difference]: Finished difference. Result has 55 places, 44 transitions, 223 flow [2024-06-28 01:22:37,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=223, PETRI_PLACES=55, PETRI_TRANSITIONS=44} [2024-06-28 01:22:37,324 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 15 predicate places. [2024-06-28 01:22:37,325 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 44 transitions, 223 flow [2024-06-28 01:22:37,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:37,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:37,325 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:37,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 01:22:37,325 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:37,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:37,326 INFO L85 PathProgramCache]: Analyzing trace with hash 114338890, now seen corresponding path program 1 times [2024-06-28 01:22:37,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:37,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13076535] [2024-06-28 01:22:37,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:37,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:37,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:37,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:37,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:37,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13076535] [2024-06-28 01:22:37,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13076535] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:37,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:37,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:22:37,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423618068] [2024-06-28 01:22:37,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:37,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:22:37,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:37,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:22:37,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:22:37,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:22:37,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 44 transitions, 223 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) [2024-06-28 01:22:37,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:37,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:22:37,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:37,956 INFO L124 PetriNetUnfolderBase]: 464/922 cut-off events. [2024-06-28 01:22:37,957 INFO L125 PetriNetUnfolderBase]: For 918/918 co-relation queries the response was YES. [2024-06-28 01:22:37,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2429 conditions, 922 events. 464/922 cut-off events. For 918/918 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 4850 event pairs, 147 based on Foata normal form. 1/885 useless extension candidates. Maximal degree in co-relation 2407. Up to 754 conditions per place. [2024-06-28 01:22:37,961 INFO L140 encePairwiseOnDemand]: 30/36 looper letters, 43 selfloop transitions, 8 changer transitions 0/58 dead transitions. [2024-06-28 01:22:37,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 58 transitions, 359 flow [2024-06-28 01:22:37,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:22:37,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:22:37,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 86 transitions. [2024-06-28 01:22:37,963 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4777777777777778 [2024-06-28 01:22:37,963 INFO L175 Difference]: Start difference. First operand has 55 places, 44 transitions, 223 flow. Second operand 5 states and 86 transitions. [2024-06-28 01:22:37,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 58 transitions, 359 flow [2024-06-28 01:22:37,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 58 transitions, 316 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 01:22:37,965 INFO L231 Difference]: Finished difference. Result has 54 places, 46 transitions, 212 flow [2024-06-28 01:22:37,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=212, PETRI_PLACES=54, PETRI_TRANSITIONS=46} [2024-06-28 01:22:37,966 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 14 predicate places. [2024-06-28 01:22:37,966 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 46 transitions, 212 flow [2024-06-28 01:22:37,967 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) [2024-06-28 01:22:37,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:37,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:37,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 01:22:37,967 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:37,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:37,968 INFO L85 PathProgramCache]: Analyzing trace with hash -750460137, now seen corresponding path program 1 times [2024-06-28 01:22:37,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:37,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530396885] [2024-06-28 01:22:37,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:37,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:37,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:38,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:38,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:38,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530396885] [2024-06-28 01:22:38,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530396885] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:38,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:38,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:22:38,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184479979] [2024-06-28 01:22:38,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:38,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:22:38,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:38,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:22:38,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:22:38,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:22:38,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 46 transitions, 212 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) [2024-06-28 01:22:38,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:38,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:22:38,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:38,830 INFO L124 PetriNetUnfolderBase]: 458/861 cut-off events. [2024-06-28 01:22:38,830 INFO L125 PetriNetUnfolderBase]: For 1032/1032 co-relation queries the response was YES. [2024-06-28 01:22:38,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2339 conditions, 861 events. 458/861 cut-off events. For 1032/1032 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 4335 event pairs, 138 based on Foata normal form. 3/839 useless extension candidates. Maximal degree in co-relation 2316. Up to 712 conditions per place. [2024-06-28 01:22:38,834 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 50 selfloop transitions, 10 changer transitions 0/67 dead transitions. [2024-06-28 01:22:38,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 67 transitions, 384 flow [2024-06-28 01:22:38,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:22:38,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:22:38,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 104 transitions. [2024-06-28 01:22:38,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2024-06-28 01:22:38,836 INFO L175 Difference]: Start difference. First operand has 54 places, 46 transitions, 212 flow. Second operand 6 states and 104 transitions. [2024-06-28 01:22:38,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 67 transitions, 384 flow [2024-06-28 01:22:38,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 67 transitions, 370 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-28 01:22:38,838 INFO L231 Difference]: Finished difference. Result has 57 places, 48 transitions, 235 flow [2024-06-28 01:22:38,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=235, PETRI_PLACES=57, PETRI_TRANSITIONS=48} [2024-06-28 01:22:38,839 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 17 predicate places. [2024-06-28 01:22:38,839 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 48 transitions, 235 flow [2024-06-28 01:22:38,839 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) [2024-06-28 01:22:38,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:38,839 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:38,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 01:22:38,840 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:38,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:38,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1789671284, now seen corresponding path program 1 times [2024-06-28 01:22:38,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:38,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595799137] [2024-06-28 01:22:38,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:38,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:38,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:39,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:39,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:39,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595799137] [2024-06-28 01:22:39,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595799137] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:39,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:39,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:22:39,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086681263] [2024-06-28 01:22:39,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:39,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:22:39,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:39,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:22:39,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:22:39,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:22:39,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 48 transitions, 235 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) [2024-06-28 01:22:39,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:39,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:22:39,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:39,535 INFO L124 PetriNetUnfolderBase]: 472/897 cut-off events. [2024-06-28 01:22:39,535 INFO L125 PetriNetUnfolderBase]: For 1245/1245 co-relation queries the response was YES. [2024-06-28 01:22:39,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2544 conditions, 897 events. 472/897 cut-off events. For 1245/1245 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 4591 event pairs, 112 based on Foata normal form. 1/864 useless extension candidates. Maximal degree in co-relation 2520. Up to 737 conditions per place. [2024-06-28 01:22:39,540 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 56 selfloop transitions, 13 changer transitions 0/76 dead transitions. [2024-06-28 01:22:39,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 76 transitions, 472 flow [2024-06-28 01:22:39,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:22:39,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:22:39,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 107 transitions. [2024-06-28 01:22:39,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49537037037037035 [2024-06-28 01:22:39,541 INFO L175 Difference]: Start difference. First operand has 57 places, 48 transitions, 235 flow. Second operand 6 states and 107 transitions. [2024-06-28 01:22:39,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 76 transitions, 472 flow [2024-06-28 01:22:39,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 76 transitions, 448 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-28 01:22:39,544 INFO L231 Difference]: Finished difference. Result has 61 places, 56 transitions, 305 flow [2024-06-28 01:22:39,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=305, PETRI_PLACES=61, PETRI_TRANSITIONS=56} [2024-06-28 01:22:39,545 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 21 predicate places. [2024-06-28 01:22:39,545 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 56 transitions, 305 flow [2024-06-28 01:22:39,546 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) [2024-06-28 01:22:39,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:39,546 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:39,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 01:22:39,546 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:39,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:39,547 INFO L85 PathProgramCache]: Analyzing trace with hash -844762454, now seen corresponding path program 2 times [2024-06-28 01:22:39,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:39,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025546106] [2024-06-28 01:22:39,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:39,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:39,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:39,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:39,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:39,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025546106] [2024-06-28 01:22:39,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025546106] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:39,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:39,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:22:39,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358721841] [2024-06-28 01:22:39,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:39,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:22:39,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:39,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:22:39,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:22:40,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:22:40,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 56 transitions, 305 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) [2024-06-28 01:22:40,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:40,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:22:40,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:40,255 INFO L124 PetriNetUnfolderBase]: 470/916 cut-off events. [2024-06-28 01:22:40,256 INFO L125 PetriNetUnfolderBase]: For 1604/1604 co-relation queries the response was YES. [2024-06-28 01:22:40,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2731 conditions, 916 events. 470/916 cut-off events. For 1604/1604 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4787 event pairs, 146 based on Foata normal form. 1/883 useless extension candidates. Maximal degree in co-relation 2704. Up to 761 conditions per place. [2024-06-28 01:22:40,260 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 53 selfloop transitions, 10 changer transitions 0/70 dead transitions. [2024-06-28 01:22:40,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 70 transitions, 465 flow [2024-06-28 01:22:40,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:22:40,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:22:40,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 100 transitions. [2024-06-28 01:22:40,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46296296296296297 [2024-06-28 01:22:40,262 INFO L175 Difference]: Start difference. First operand has 61 places, 56 transitions, 305 flow. Second operand 6 states and 100 transitions. [2024-06-28 01:22:40,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 70 transitions, 465 flow [2024-06-28 01:22:40,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 70 transitions, 457 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-06-28 01:22:40,265 INFO L231 Difference]: Finished difference. Result has 66 places, 56 transitions, 322 flow [2024-06-28 01:22:40,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=322, PETRI_PLACES=66, PETRI_TRANSITIONS=56} [2024-06-28 01:22:40,265 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 26 predicate places. [2024-06-28 01:22:40,265 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 56 transitions, 322 flow [2024-06-28 01:22:40,266 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) [2024-06-28 01:22:40,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:40,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:40,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 01:22:40,266 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:40,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:40,267 INFO L85 PathProgramCache]: Analyzing trace with hash 156238397, now seen corresponding path program 1 times [2024-06-28 01:22:40,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:40,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111800279] [2024-06-28 01:22:40,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:40,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:40,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:40,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:40,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:40,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111800279] [2024-06-28 01:22:40,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111800279] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:40,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:40,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:22:40,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154435248] [2024-06-28 01:22:40,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:40,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:22:40,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:40,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:22:40,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:22:40,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:22:40,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 56 transitions, 322 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:40,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:40,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:22:40,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:41,202 INFO L124 PetriNetUnfolderBase]: 481/913 cut-off events. [2024-06-28 01:22:41,203 INFO L125 PetriNetUnfolderBase]: For 1908/1908 co-relation queries the response was YES. [2024-06-28 01:22:41,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2832 conditions, 913 events. 481/913 cut-off events. For 1908/1908 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4693 event pairs, 107 based on Foata normal form. 1/879 useless extension candidates. Maximal degree in co-relation 2802. Up to 751 conditions per place. [2024-06-28 01:22:41,208 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 67 selfloop transitions, 11 changer transitions 0/85 dead transitions. [2024-06-28 01:22:41,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 85 transitions, 562 flow [2024-06-28 01:22:41,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:22:41,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:22:41,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 123 transitions. [2024-06-28 01:22:41,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4880952380952381 [2024-06-28 01:22:41,209 INFO L175 Difference]: Start difference. First operand has 66 places, 56 transitions, 322 flow. Second operand 7 states and 123 transitions. [2024-06-28 01:22:41,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 85 transitions, 562 flow [2024-06-28 01:22:41,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 85 transitions, 539 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-28 01:22:41,213 INFO L231 Difference]: Finished difference. Result has 69 places, 58 transitions, 342 flow [2024-06-28 01:22:41,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=299, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=342, PETRI_PLACES=69, PETRI_TRANSITIONS=58} [2024-06-28 01:22:41,214 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 29 predicate places. [2024-06-28 01:22:41,214 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 58 transitions, 342 flow [2024-06-28 01:22:41,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:41,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:41,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:41,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 01:22:41,215 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:41,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:41,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1908622471, now seen corresponding path program 2 times [2024-06-28 01:22:41,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:41,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463749528] [2024-06-28 01:22:41,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:41,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:41,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:41,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:41,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:41,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463749528] [2024-06-28 01:22:41,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463749528] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:41,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:41,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:22:41,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266623038] [2024-06-28 01:22:41,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:41,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:22:41,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:41,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:22:41,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:22:41,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:22:41,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 58 transitions, 342 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:41,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:41,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:22:41,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:42,140 INFO L124 PetriNetUnfolderBase]: 551/1040 cut-off events. [2024-06-28 01:22:42,141 INFO L125 PetriNetUnfolderBase]: For 2803/2803 co-relation queries the response was YES. [2024-06-28 01:22:42,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3491 conditions, 1040 events. 551/1040 cut-off events. For 2803/2803 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5441 event pairs, 133 based on Foata normal form. 1/1004 useless extension candidates. Maximal degree in co-relation 3461. Up to 818 conditions per place. [2024-06-28 01:22:42,146 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 66 selfloop transitions, 21 changer transitions 0/94 dead transitions. [2024-06-28 01:22:42,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 94 transitions, 713 flow [2024-06-28 01:22:42,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:22:42,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:22:42,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 133 transitions. [2024-06-28 01:22:42,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4618055555555556 [2024-06-28 01:22:42,149 INFO L175 Difference]: Start difference. First operand has 69 places, 58 transitions, 342 flow. Second operand 8 states and 133 transitions. [2024-06-28 01:22:42,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 94 transitions, 713 flow [2024-06-28 01:22:42,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 94 transitions, 662 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-28 01:22:42,154 INFO L231 Difference]: Finished difference. Result has 75 places, 71 transitions, 484 flow [2024-06-28 01:22:42,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=311, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=484, PETRI_PLACES=75, PETRI_TRANSITIONS=71} [2024-06-28 01:22:42,154 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 35 predicate places. [2024-06-28 01:22:42,155 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 71 transitions, 484 flow [2024-06-28 01:22:42,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:42,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:42,155 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:42,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 01:22:42,155 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:42,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:42,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1908622285, now seen corresponding path program 1 times [2024-06-28 01:22:42,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:42,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228819272] [2024-06-28 01:22:42,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:42,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:42,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:42,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:42,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:42,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228819272] [2024-06-28 01:22:42,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228819272] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:42,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:42,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:22:42,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906010700] [2024-06-28 01:22:42,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:42,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:22:42,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:42,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:22:42,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:22:42,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:22:42,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 71 transitions, 484 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:42,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:42,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:22:42,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:42,938 INFO L124 PetriNetUnfolderBase]: 623/1165 cut-off events. [2024-06-28 01:22:42,938 INFO L125 PetriNetUnfolderBase]: For 3747/3747 co-relation queries the response was YES. [2024-06-28 01:22:42,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4066 conditions, 1165 events. 623/1165 cut-off events. For 3747/3747 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 6225 event pairs, 150 based on Foata normal form. 3/1127 useless extension candidates. Maximal degree in co-relation 4032. Up to 894 conditions per place. [2024-06-28 01:22:42,944 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 78 selfloop transitions, 20 changer transitions 0/105 dead transitions. [2024-06-28 01:22:42,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 105 transitions, 810 flow [2024-06-28 01:22:42,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:22:42,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:22:42,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-28 01:22:42,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4756944444444444 [2024-06-28 01:22:42,945 INFO L175 Difference]: Start difference. First operand has 75 places, 71 transitions, 484 flow. Second operand 8 states and 137 transitions. [2024-06-28 01:22:42,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 105 transitions, 810 flow [2024-06-28 01:22:42,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 105 transitions, 796 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-06-28 01:22:42,951 INFO L231 Difference]: Finished difference. Result has 84 places, 79 transitions, 585 flow [2024-06-28 01:22:42,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=470, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=585, PETRI_PLACES=84, PETRI_TRANSITIONS=79} [2024-06-28 01:22:42,952 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 44 predicate places. [2024-06-28 01:22:42,952 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 79 transitions, 585 flow [2024-06-28 01:22:42,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:42,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:42,952 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:42,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 01:22:42,953 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:42,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:42,953 INFO L85 PathProgramCache]: Analyzing trace with hash -394593935, now seen corresponding path program 3 times [2024-06-28 01:22:42,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:42,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956687204] [2024-06-28 01:22:42,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:42,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:42,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:43,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:43,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:43,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956687204] [2024-06-28 01:22:43,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956687204] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:43,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:43,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:22:43,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58077224] [2024-06-28 01:22:43,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:43,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:22:43,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:43,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:22:43,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:22:43,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:22:43,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 79 transitions, 585 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:43,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:43,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:22:43,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:43,782 INFO L124 PetriNetUnfolderBase]: 621/1199 cut-off events. [2024-06-28 01:22:43,782 INFO L125 PetriNetUnfolderBase]: For 4529/4529 co-relation queries the response was YES. [2024-06-28 01:22:43,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4475 conditions, 1199 events. 621/1199 cut-off events. For 4529/4529 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 6588 event pairs, 184 based on Foata normal form. 1/1155 useless extension candidates. Maximal degree in co-relation 4436. Up to 984 conditions per place. [2024-06-28 01:22:43,789 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 77 selfloop transitions, 13 changer transitions 0/97 dead transitions. [2024-06-28 01:22:43,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 97 transitions, 815 flow [2024-06-28 01:22:43,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:22:43,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:22:43,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 116 transitions. [2024-06-28 01:22:43,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4603174603174603 [2024-06-28 01:22:43,790 INFO L175 Difference]: Start difference. First operand has 84 places, 79 transitions, 585 flow. Second operand 7 states and 116 transitions. [2024-06-28 01:22:43,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 97 transitions, 815 flow [2024-06-28 01:22:43,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 97 transitions, 798 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-06-28 01:22:43,800 INFO L231 Difference]: Finished difference. Result has 89 places, 79 transitions, 599 flow [2024-06-28 01:22:43,800 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=568, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=599, PETRI_PLACES=89, PETRI_TRANSITIONS=79} [2024-06-28 01:22:43,801 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 49 predicate places. [2024-06-28 01:22:43,801 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 79 transitions, 599 flow [2024-06-28 01:22:43,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:43,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:43,802 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:43,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 01:22:43,802 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:43,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:43,802 INFO L85 PathProgramCache]: Analyzing trace with hash 362089433, now seen corresponding path program 2 times [2024-06-28 01:22:43,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:43,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652125837] [2024-06-28 01:22:43,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:43,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:43,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:44,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:44,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:44,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652125837] [2024-06-28 01:22:44,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652125837] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:44,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:44,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:22:44,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539582941] [2024-06-28 01:22:44,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:44,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:22:44,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:44,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:22:44,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:22:44,388 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:22:44,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 79 transitions, 599 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:44,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:44,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:22:44,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:44,680 INFO L124 PetriNetUnfolderBase]: 654/1251 cut-off events. [2024-06-28 01:22:44,680 INFO L125 PetriNetUnfolderBase]: For 5164/5164 co-relation queries the response was YES. [2024-06-28 01:22:44,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4716 conditions, 1251 events. 654/1251 cut-off events. For 5164/5164 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 6894 event pairs, 184 based on Foata normal form. 3/1209 useless extension candidates. Maximal degree in co-relation 4675. Up to 970 conditions per place. [2024-06-28 01:22:44,688 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 80 selfloop transitions, 17 changer transitions 0/104 dead transitions. [2024-06-28 01:22:44,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 104 transitions, 897 flow [2024-06-28 01:22:44,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:22:44,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:22:44,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 123 transitions. [2024-06-28 01:22:44,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4880952380952381 [2024-06-28 01:22:44,689 INFO L175 Difference]: Start difference. First operand has 89 places, 79 transitions, 599 flow. Second operand 7 states and 123 transitions. [2024-06-28 01:22:44,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 104 transitions, 897 flow [2024-06-28 01:22:44,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 104 transitions, 868 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-28 01:22:44,696 INFO L231 Difference]: Finished difference. Result has 91 places, 81 transitions, 625 flow [2024-06-28 01:22:44,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=570, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=625, PETRI_PLACES=91, PETRI_TRANSITIONS=81} [2024-06-28 01:22:44,697 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 51 predicate places. [2024-06-28 01:22:44,697 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 81 transitions, 625 flow [2024-06-28 01:22:44,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:44,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:44,697 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:44,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 01:22:44,698 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:44,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:44,698 INFO L85 PathProgramCache]: Analyzing trace with hash 362355413, now seen corresponding path program 3 times [2024-06-28 01:22:44,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:44,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67089517] [2024-06-28 01:22:44,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:44,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:44,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:45,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:45,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:45,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67089517] [2024-06-28 01:22:45,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67089517] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:45,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:45,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:22:45,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17455741] [2024-06-28 01:22:45,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:45,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:22:45,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:45,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:22:45,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:22:45,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:22:45,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 81 transitions, 625 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:45,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:45,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:22:45,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:45,616 INFO L124 PetriNetUnfolderBase]: 648/1254 cut-off events. [2024-06-28 01:22:45,616 INFO L125 PetriNetUnfolderBase]: For 5493/5493 co-relation queries the response was YES. [2024-06-28 01:22:45,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4743 conditions, 1254 events. 648/1254 cut-off events. For 5493/5493 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 6980 event pairs, 190 based on Foata normal form. 3/1209 useless extension candidates. Maximal degree in co-relation 4701. Up to 1008 conditions per place. [2024-06-28 01:22:45,624 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 77 selfloop transitions, 15 changer transitions 0/99 dead transitions. [2024-06-28 01:22:45,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 99 transitions, 855 flow [2024-06-28 01:22:45,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:22:45,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:22:45,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 127 transitions. [2024-06-28 01:22:45,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4409722222222222 [2024-06-28 01:22:45,626 INFO L175 Difference]: Start difference. First operand has 91 places, 81 transitions, 625 flow. Second operand 8 states and 127 transitions. [2024-06-28 01:22:45,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 99 transitions, 855 flow [2024-06-28 01:22:45,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 99 transitions, 816 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-28 01:22:45,633 INFO L231 Difference]: Finished difference. Result has 95 places, 81 transitions, 621 flow [2024-06-28 01:22:45,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=586, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=621, PETRI_PLACES=95, PETRI_TRANSITIONS=81} [2024-06-28 01:22:45,633 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 55 predicate places. [2024-06-28 01:22:45,634 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 81 transitions, 621 flow [2024-06-28 01:22:45,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:45,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:45,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:45,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 01:22:45,634 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:45,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:45,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1259546035, now seen corresponding path program 4 times [2024-06-28 01:22:45,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:45,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202034998] [2024-06-28 01:22:45,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:45,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:45,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:46,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:46,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:46,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202034998] [2024-06-28 01:22:46,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202034998] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:46,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:46,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:22:46,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011152799] [2024-06-28 01:22:46,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:46,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:22:46,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:46,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:22:46,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:22:46,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:22:46,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 81 transitions, 621 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:46,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:46,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:22:46,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:46,554 INFO L124 PetriNetUnfolderBase]: 783/1496 cut-off events. [2024-06-28 01:22:46,554 INFO L125 PetriNetUnfolderBase]: For 6410/6410 co-relation queries the response was YES. [2024-06-28 01:22:46,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5656 conditions, 1496 events. 783/1496 cut-off events. For 6410/6410 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 8736 event pairs, 178 based on Foata normal form. 3/1445 useless extension candidates. Maximal degree in co-relation 5613. Up to 1057 conditions per place. [2024-06-28 01:22:46,568 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 94 selfloop transitions, 41 changer transitions 0/142 dead transitions. [2024-06-28 01:22:46,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 142 transitions, 1270 flow [2024-06-28 01:22:46,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:22:46,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:22:46,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-28 01:22:46,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5069444444444444 [2024-06-28 01:22:46,570 INFO L175 Difference]: Start difference. First operand has 95 places, 81 transitions, 621 flow. Second operand 8 states and 146 transitions. [2024-06-28 01:22:46,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 142 transitions, 1270 flow [2024-06-28 01:22:46,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 142 transitions, 1210 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-28 01:22:46,580 INFO L231 Difference]: Finished difference. Result has 98 places, 108 transitions, 953 flow [2024-06-28 01:22:46,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=575, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=953, PETRI_PLACES=98, PETRI_TRANSITIONS=108} [2024-06-28 01:22:46,581 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 58 predicate places. [2024-06-28 01:22:46,581 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 108 transitions, 953 flow [2024-06-28 01:22:46,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:46,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:46,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:46,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 01:22:46,582 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:46,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:46,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1229072539, now seen corresponding path program 4 times [2024-06-28 01:22:46,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:46,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059151270] [2024-06-28 01:22:46,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:46,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:46,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:47,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:47,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:47,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059151270] [2024-06-28 01:22:47,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059151270] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:47,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:47,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:22:47,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330100640] [2024-06-28 01:22:47,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:47,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:22:47,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:47,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:22:47,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:22:47,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:22:47,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 108 transitions, 953 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:47,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:47,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:22:47,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:47,483 INFO L124 PetriNetUnfolderBase]: 826/1647 cut-off events. [2024-06-28 01:22:47,483 INFO L125 PetriNetUnfolderBase]: For 7465/7465 co-relation queries the response was YES. [2024-06-28 01:22:47,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6699 conditions, 1647 events. 826/1647 cut-off events. For 7465/7465 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 10068 event pairs, 166 based on Foata normal form. 1/1570 useless extension candidates. Maximal degree in co-relation 6653. Up to 1159 conditions per place. [2024-06-28 01:22:47,492 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 109 selfloop transitions, 50 changer transitions 0/166 dead transitions. [2024-06-28 01:22:47,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 166 transitions, 1638 flow [2024-06-28 01:22:47,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:22:47,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:22:47,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-06-28 01:22:47,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4930555555555556 [2024-06-28 01:22:47,494 INFO L175 Difference]: Start difference. First operand has 98 places, 108 transitions, 953 flow. Second operand 8 states and 142 transitions. [2024-06-28 01:22:47,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 166 transitions, 1638 flow [2024-06-28 01:22:47,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 166 transitions, 1591 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-06-28 01:22:47,543 INFO L231 Difference]: Finished difference. Result has 105 places, 139 transitions, 1335 flow [2024-06-28 01:22:47,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=915, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1335, PETRI_PLACES=105, PETRI_TRANSITIONS=139} [2024-06-28 01:22:47,544 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 65 predicate places. [2024-06-28 01:22:47,544 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 139 transitions, 1335 flow [2024-06-28 01:22:47,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:47,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:47,544 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:47,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 01:22:47,545 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:47,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:47,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1423927999, now seen corresponding path program 1 times [2024-06-28 01:22:47,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:47,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149870321] [2024-06-28 01:22:47,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:47,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:47,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:48,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:48,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:48,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149870321] [2024-06-28 01:22:48,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149870321] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:48,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:48,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:22:48,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595659915] [2024-06-28 01:22:48,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:48,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:22:48,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:48,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:22:48,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:22:48,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:22:48,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 139 transitions, 1335 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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) [2024-06-28 01:22:48,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:48,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:22:48,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:48,834 INFO L124 PetriNetUnfolderBase]: 840/1689 cut-off events. [2024-06-28 01:22:48,835 INFO L125 PetriNetUnfolderBase]: For 8902/8902 co-relation queries the response was YES. [2024-06-28 01:22:48,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7305 conditions, 1689 events. 840/1689 cut-off events. For 8902/8902 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 10454 event pairs, 163 based on Foata normal form. 1/1608 useless extension candidates. Maximal degree in co-relation 7255. Up to 1203 conditions per place. [2024-06-28 01:22:48,846 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 143 selfloop transitions, 36 changer transitions 0/186 dead transitions. [2024-06-28 01:22:48,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 186 transitions, 1941 flow [2024-06-28 01:22:48,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:22:48,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:22:48,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-28 01:22:48,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4876543209876543 [2024-06-28 01:22:48,848 INFO L175 Difference]: Start difference. First operand has 105 places, 139 transitions, 1335 flow. Second operand 9 states and 158 transitions. [2024-06-28 01:22:48,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 186 transitions, 1941 flow [2024-06-28 01:22:48,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 186 transitions, 1888 flow, removed 19 selfloop flow, removed 3 redundant places. [2024-06-28 01:22:48,866 INFO L231 Difference]: Finished difference. Result has 112 places, 143 transitions, 1417 flow [2024-06-28 01:22:48,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1294, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1417, PETRI_PLACES=112, PETRI_TRANSITIONS=143} [2024-06-28 01:22:48,866 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 72 predicate places. [2024-06-28 01:22:48,866 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 143 transitions, 1417 flow [2024-06-28 01:22:48,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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) [2024-06-28 01:22:48,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:48,867 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:48,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 01:22:48,867 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:48,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:48,867 INFO L85 PathProgramCache]: Analyzing trace with hash 958528042, now seen corresponding path program 1 times [2024-06-28 01:22:48,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:48,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936848808] [2024-06-28 01:22:48,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:48,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:48,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:49,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:49,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:49,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936848808] [2024-06-28 01:22:49,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936848808] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:49,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:49,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:22:49,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255540379] [2024-06-28 01:22:49,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:49,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:22:49,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:49,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:22:49,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:22:49,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:22:49,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 143 transitions, 1417 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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) [2024-06-28 01:22:49,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:49,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:22:49,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:49,933 INFO L124 PetriNetUnfolderBase]: 873/1756 cut-off events. [2024-06-28 01:22:49,934 INFO L125 PetriNetUnfolderBase]: For 10432/10432 co-relation queries the response was YES. [2024-06-28 01:22:49,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7765 conditions, 1756 events. 873/1756 cut-off events. For 10432/10432 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 10966 event pairs, 170 based on Foata normal form. 3/1673 useless extension candidates. Maximal degree in co-relation 7713. Up to 1266 conditions per place. [2024-06-28 01:22:49,945 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 141 selfloop transitions, 34 changer transitions 0/182 dead transitions. [2024-06-28 01:22:49,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 182 transitions, 1967 flow [2024-06-28 01:22:49,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:22:49,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:22:49,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-06-28 01:22:49,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4895833333333333 [2024-06-28 01:22:49,946 INFO L175 Difference]: Start difference. First operand has 112 places, 143 transitions, 1417 flow. Second operand 8 states and 141 transitions. [2024-06-28 01:22:49,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 182 transitions, 1967 flow [2024-06-28 01:22:49,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 182 transitions, 1898 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 01:22:49,964 INFO L231 Difference]: Finished difference. Result has 114 places, 145 transitions, 1449 flow [2024-06-28 01:22:49,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1348, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1449, PETRI_PLACES=114, PETRI_TRANSITIONS=145} [2024-06-28 01:22:49,964 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 74 predicate places. [2024-06-28 01:22:49,964 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 145 transitions, 1449 flow [2024-06-28 01:22:49,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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) [2024-06-28 01:22:49,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:49,965 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:49,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 01:22:49,965 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:49,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:49,965 INFO L85 PathProgramCache]: Analyzing trace with hash 552149230, now seen corresponding path program 2 times [2024-06-28 01:22:49,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:49,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148056024] [2024-06-28 01:22:49,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:49,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:49,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:50,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:50,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:50,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148056024] [2024-06-28 01:22:50,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148056024] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:50,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:50,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:22:50,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054548750] [2024-06-28 01:22:50,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:50,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:22:50,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:50,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:22:50,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:22:50,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:22:50,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 145 transitions, 1449 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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) [2024-06-28 01:22:50,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:50,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:22:50,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:51,015 INFO L124 PetriNetUnfolderBase]: 1017/1938 cut-off events. [2024-06-28 01:22:51,015 INFO L125 PetriNetUnfolderBase]: For 13946/13946 co-relation queries the response was YES. [2024-06-28 01:22:51,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9142 conditions, 1938 events. 1017/1938 cut-off events. For 13946/13946 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 11960 event pairs, 249 based on Foata normal form. 3/1868 useless extension candidates. Maximal degree in co-relation 9089. Up to 1048 conditions per place. [2024-06-28 01:22:51,027 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 126 selfloop transitions, 60 changer transitions 0/193 dead transitions. [2024-06-28 01:22:51,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 193 transitions, 2182 flow [2024-06-28 01:22:51,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:22:51,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:22:51,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-28 01:22:51,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49074074074074076 [2024-06-28 01:22:51,030 INFO L175 Difference]: Start difference. First operand has 114 places, 145 transitions, 1449 flow. Second operand 9 states and 159 transitions. [2024-06-28 01:22:51,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 193 transitions, 2182 flow [2024-06-28 01:22:51,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 193 transitions, 2087 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-28 01:22:51,054 INFO L231 Difference]: Finished difference. Result has 118 places, 153 transitions, 1611 flow [2024-06-28 01:22:51,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1372, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1611, PETRI_PLACES=118, PETRI_TRANSITIONS=153} [2024-06-28 01:22:51,055 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 78 predicate places. [2024-06-28 01:22:51,055 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 153 transitions, 1611 flow [2024-06-28 01:22:51,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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) [2024-06-28 01:22:51,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:51,055 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:51,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 01:22:51,055 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:51,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:51,056 INFO L85 PathProgramCache]: Analyzing trace with hash 552143650, now seen corresponding path program 3 times [2024-06-28 01:22:51,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:51,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462326174] [2024-06-28 01:22:51,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:51,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:51,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:51,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:51,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:51,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462326174] [2024-06-28 01:22:51,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462326174] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:51,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:51,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:22:51,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843101553] [2024-06-28 01:22:51,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:51,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:22:51,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:51,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:22:51,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:22:51,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:22:51,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 153 transitions, 1611 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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) [2024-06-28 01:22:51,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:51,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:22:51,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:52,093 INFO L124 PetriNetUnfolderBase]: 1073/2013 cut-off events. [2024-06-28 01:22:52,093 INFO L125 PetriNetUnfolderBase]: For 16234/16234 co-relation queries the response was YES. [2024-06-28 01:22:52,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9818 conditions, 2013 events. 1073/2013 cut-off events. For 16234/16234 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 12236 event pairs, 197 based on Foata normal form. 6/1948 useless extension candidates. Maximal degree in co-relation 9763. Up to 931 conditions per place. [2024-06-28 01:22:52,108 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 125 selfloop transitions, 71 changer transitions 0/203 dead transitions. [2024-06-28 01:22:52,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 203 transitions, 2357 flow [2024-06-28 01:22:52,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:22:52,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:22:52,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-28 01:22:52,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5347222222222222 [2024-06-28 01:22:52,110 INFO L175 Difference]: Start difference. First operand has 118 places, 153 transitions, 1611 flow. Second operand 8 states and 154 transitions. [2024-06-28 01:22:52,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 203 transitions, 2357 flow [2024-06-28 01:22:52,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 203 transitions, 2288 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-28 01:22:52,151 INFO L231 Difference]: Finished difference. Result has 122 places, 157 transitions, 1755 flow [2024-06-28 01:22:52,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1542, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1755, PETRI_PLACES=122, PETRI_TRANSITIONS=157} [2024-06-28 01:22:52,151 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 82 predicate places. [2024-06-28 01:22:52,151 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 157 transitions, 1755 flow [2024-06-28 01:22:52,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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) [2024-06-28 01:22:52,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:52,152 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:52,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 01:22:52,152 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:52,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:52,153 INFO L85 PathProgramCache]: Analyzing trace with hash 552143495, now seen corresponding path program 2 times [2024-06-28 01:22:52,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:52,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377767238] [2024-06-28 01:22:52,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:52,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:52,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:52,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:52,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:52,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377767238] [2024-06-28 01:22:52,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377767238] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:52,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:52,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:22:52,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444066181] [2024-06-28 01:22:52,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:52,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:22:52,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:52,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:22:52,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:22:52,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:22:52,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 157 transitions, 1755 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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) [2024-06-28 01:22:52,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:52,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:22:52,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:53,439 INFO L124 PetriNetUnfolderBase]: 1093/2075 cut-off events. [2024-06-28 01:22:53,439 INFO L125 PetriNetUnfolderBase]: For 17014/17014 co-relation queries the response was YES. [2024-06-28 01:22:53,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10385 conditions, 2075 events. 1093/2075 cut-off events. For 17014/17014 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 12791 event pairs, 206 based on Foata normal form. 1/1998 useless extension candidates. Maximal degree in co-relation 10328. Up to 1495 conditions per place. [2024-06-28 01:22:53,452 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 121 selfloop transitions, 73 changer transitions 0/201 dead transitions. [2024-06-28 01:22:53,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 201 transitions, 2447 flow [2024-06-28 01:22:53,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:22:53,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:22:53,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-28 01:22:53,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-28 01:22:53,453 INFO L175 Difference]: Start difference. First operand has 122 places, 157 transitions, 1755 flow. Second operand 9 states and 153 transitions. [2024-06-28 01:22:53,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 201 transitions, 2447 flow [2024-06-28 01:22:53,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 201 transitions, 2341 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-06-28 01:22:53,487 INFO L231 Difference]: Finished difference. Result has 128 places, 166 transitions, 1970 flow [2024-06-28 01:22:53,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1655, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1970, PETRI_PLACES=128, PETRI_TRANSITIONS=166} [2024-06-28 01:22:53,487 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 88 predicate places. [2024-06-28 01:22:53,488 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 166 transitions, 1970 flow [2024-06-28 01:22:53,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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) [2024-06-28 01:22:53,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:53,488 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:53,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 01:22:53,488 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:53,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:53,489 INFO L85 PathProgramCache]: Analyzing trace with hash -59307991, now seen corresponding path program 1 times [2024-06-28 01:22:53,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:53,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524676965] [2024-06-28 01:22:53,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:53,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:53,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:54,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:54,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:54,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524676965] [2024-06-28 01:22:54,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524676965] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:54,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:54,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:22:54,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499929076] [2024-06-28 01:22:54,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:54,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:22:54,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:54,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:22:54,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:22:54,194 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:22:54,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 166 transitions, 1970 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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) [2024-06-28 01:22:54,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:54,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:22:54,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:54,752 INFO L124 PetriNetUnfolderBase]: 1095/2038 cut-off events. [2024-06-28 01:22:54,753 INFO L125 PetriNetUnfolderBase]: For 17402/17402 co-relation queries the response was YES. [2024-06-28 01:22:54,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10534 conditions, 2038 events. 1095/2038 cut-off events. For 17402/17402 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 12643 event pairs, 291 based on Foata normal form. 2/1972 useless extension candidates. Maximal degree in co-relation 10474. Up to 1699 conditions per place. [2024-06-28 01:22:54,786 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 168 selfloop transitions, 17 changer transitions 0/192 dead transitions. [2024-06-28 01:22:54,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 192 transitions, 2460 flow [2024-06-28 01:22:54,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:22:54,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:22:54,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 132 transitions. [2024-06-28 01:22:54,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-28 01:22:54,788 INFO L175 Difference]: Start difference. First operand has 128 places, 166 transitions, 1970 flow. Second operand 8 states and 132 transitions. [2024-06-28 01:22:54,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 192 transitions, 2460 flow [2024-06-28 01:22:54,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 192 transitions, 2383 flow, removed 34 selfloop flow, removed 2 redundant places. [2024-06-28 01:22:54,822 INFO L231 Difference]: Finished difference. Result has 135 places, 171 transitions, 1992 flow [2024-06-28 01:22:54,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1893, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1992, PETRI_PLACES=135, PETRI_TRANSITIONS=171} [2024-06-28 01:22:54,823 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 95 predicate places. [2024-06-28 01:22:54,823 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 171 transitions, 1992 flow [2024-06-28 01:22:54,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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) [2024-06-28 01:22:54,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:54,824 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:54,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 01:22:54,824 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:54,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:54,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1660128082, now seen corresponding path program 4 times [2024-06-28 01:22:54,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:54,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101086279] [2024-06-28 01:22:54,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:54,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:54,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:55,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:55,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:55,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101086279] [2024-06-28 01:22:55,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101086279] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:55,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:55,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:22:55,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969416484] [2024-06-28 01:22:55,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:55,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:22:55,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:55,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:22:55,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:22:55,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:22:55,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 171 transitions, 1992 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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) [2024-06-28 01:22:55,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:55,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:22:55,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:55,834 INFO L124 PetriNetUnfolderBase]: 1167/2235 cut-off events. [2024-06-28 01:22:55,834 INFO L125 PetriNetUnfolderBase]: For 20551/20551 co-relation queries the response was YES. [2024-06-28 01:22:55,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11537 conditions, 2235 events. 1167/2235 cut-off events. For 20551/20551 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 14395 event pairs, 312 based on Foata normal form. 3/2149 useless extension candidates. Maximal degree in co-relation 11474. Up to 1555 conditions per place. [2024-06-28 01:22:55,850 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 176 selfloop transitions, 33 changer transitions 0/216 dead transitions. [2024-06-28 01:22:55,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 216 transitions, 2763 flow [2024-06-28 01:22:55,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:22:55,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:22:55,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-28 01:22:55,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:22:55,865 INFO L175 Difference]: Start difference. First operand has 135 places, 171 transitions, 1992 flow. Second operand 8 states and 144 transitions. [2024-06-28 01:22:55,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 216 transitions, 2763 flow [2024-06-28 01:22:55,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 216 transitions, 2708 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-28 01:22:55,905 INFO L231 Difference]: Finished difference. Result has 138 places, 175 transitions, 2070 flow [2024-06-28 01:22:55,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1937, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2070, PETRI_PLACES=138, PETRI_TRANSITIONS=175} [2024-06-28 01:22:55,905 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 98 predicate places. [2024-06-28 01:22:55,905 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 175 transitions, 2070 flow [2024-06-28 01:22:55,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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) [2024-06-28 01:22:55,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:55,906 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:55,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 01:22:55,906 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:55,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:55,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1651882702, now seen corresponding path program 5 times [2024-06-28 01:22:55,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:55,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951339487] [2024-06-28 01:22:55,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:55,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:55,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:56,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:56,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:56,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951339487] [2024-06-28 01:22:56,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951339487] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:56,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:56,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:22:56,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143728843] [2024-06-28 01:22:56,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:56,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:22:56,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:56,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:22:56,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:22:56,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:22:56,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 175 transitions, 2070 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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) [2024-06-28 01:22:56,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:56,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:22:56,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:56,997 INFO L124 PetriNetUnfolderBase]: 1161/2200 cut-off events. [2024-06-28 01:22:56,997 INFO L125 PetriNetUnfolderBase]: For 21116/21116 co-relation queries the response was YES. [2024-06-28 01:22:57,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11480 conditions, 2200 events. 1161/2200 cut-off events. For 21116/21116 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 14040 event pairs, 317 based on Foata normal form. 3/2120 useless extension candidates. Maximal degree in co-relation 11416. Up to 1734 conditions per place. [2024-06-28 01:22:57,012 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 177 selfloop transitions, 19 changer transitions 0/203 dead transitions. [2024-06-28 01:22:57,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 203 transitions, 2586 flow [2024-06-28 01:22:57,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:22:57,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:22:57,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 135 transitions. [2024-06-28 01:22:57,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46875 [2024-06-28 01:22:57,014 INFO L175 Difference]: Start difference. First operand has 138 places, 175 transitions, 2070 flow. Second operand 8 states and 135 transitions. [2024-06-28 01:22:57,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 203 transitions, 2586 flow [2024-06-28 01:22:57,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 203 transitions, 2490 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-28 01:22:57,056 INFO L231 Difference]: Finished difference. Result has 141 places, 175 transitions, 2019 flow [2024-06-28 01:22:57,056 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1974, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2019, PETRI_PLACES=141, PETRI_TRANSITIONS=175} [2024-06-28 01:22:57,056 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 101 predicate places. [2024-06-28 01:22:57,056 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 175 transitions, 2019 flow [2024-06-28 01:22:57,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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) [2024-06-28 01:22:57,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:57,057 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:57,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 01:22:57,057 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:57,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:57,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1106137642, now seen corresponding path program 6 times [2024-06-28 01:22:57,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:57,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695350541] [2024-06-28 01:22:57,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:57,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:57,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:57,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:57,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:57,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695350541] [2024-06-28 01:22:57,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695350541] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:57,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:57,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:22:57,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615371315] [2024-06-28 01:22:57,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:57,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:22:57,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:57,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:22:57,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:22:57,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:22:57,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 175 transitions, 2019 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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) [2024-06-28 01:22:57,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:57,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:22:57,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:58,060 INFO L124 PetriNetUnfolderBase]: 1155/2209 cut-off events. [2024-06-28 01:22:58,060 INFO L125 PetriNetUnfolderBase]: For 19619/19619 co-relation queries the response was YES. [2024-06-28 01:22:58,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11114 conditions, 2209 events. 1155/2209 cut-off events. For 19619/19619 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 14195 event pairs, 299 based on Foata normal form. 3/2125 useless extension candidates. Maximal degree in co-relation 11049. Up to 1547 conditions per place. [2024-06-28 01:22:58,075 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 167 selfloop transitions, 37 changer transitions 0/211 dead transitions. [2024-06-28 01:22:58,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 211 transitions, 2608 flow [2024-06-28 01:22:58,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:22:58,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:22:58,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 151 transitions. [2024-06-28 01:22:58,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4660493827160494 [2024-06-28 01:22:58,076 INFO L175 Difference]: Start difference. First operand has 141 places, 175 transitions, 2019 flow. Second operand 9 states and 151 transitions. [2024-06-28 01:22:58,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 211 transitions, 2608 flow [2024-06-28 01:22:58,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 211 transitions, 2540 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-28 01:22:58,171 INFO L231 Difference]: Finished difference. Result has 143 places, 175 transitions, 2032 flow [2024-06-28 01:22:58,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1951, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2032, PETRI_PLACES=143, PETRI_TRANSITIONS=175} [2024-06-28 01:22:58,172 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 103 predicate places. [2024-06-28 01:22:58,172 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 175 transitions, 2032 flow [2024-06-28 01:22:58,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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) [2024-06-28 01:22:58,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:58,172 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:58,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 01:22:58,172 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:58,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:58,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1660133817, now seen corresponding path program 3 times [2024-06-28 01:22:58,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:58,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705218585] [2024-06-28 01:22:58,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:58,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:58,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:58,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:58,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:58,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705218585] [2024-06-28 01:22:58,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705218585] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:58,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:58,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:22:58,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890208853] [2024-06-28 01:22:58,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:58,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:22:58,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:58,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:22:58,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:22:58,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:22:58,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 175 transitions, 2032 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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) [2024-06-28 01:22:58,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:58,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:22:58,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:59,314 INFO L124 PetriNetUnfolderBase]: 1156/2211 cut-off events. [2024-06-28 01:22:59,314 INFO L125 PetriNetUnfolderBase]: For 19198/19198 co-relation queries the response was YES. [2024-06-28 01:22:59,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11150 conditions, 2211 events. 1156/2211 cut-off events. For 19198/19198 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 14211 event pairs, 311 based on Foata normal form. 1/2125 useless extension candidates. Maximal degree in co-relation 11084. Up to 1780 conditions per place. [2024-06-28 01:22:59,330 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 170 selfloop transitions, 29 changer transitions 0/206 dead transitions. [2024-06-28 01:22:59,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 206 transitions, 2605 flow [2024-06-28 01:22:59,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:22:59,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:22:59,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 134 transitions. [2024-06-28 01:22:59,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4652777777777778 [2024-06-28 01:22:59,345 INFO L175 Difference]: Start difference. First operand has 143 places, 175 transitions, 2032 flow. Second operand 8 states and 134 transitions. [2024-06-28 01:22:59,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 206 transitions, 2605 flow [2024-06-28 01:22:59,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 206 transitions, 2521 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-28 01:22:59,384 INFO L231 Difference]: Finished difference. Result has 144 places, 179 transitions, 2076 flow [2024-06-28 01:22:59,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1948, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2076, PETRI_PLACES=144, PETRI_TRANSITIONS=179} [2024-06-28 01:22:59,385 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 104 predicate places. [2024-06-28 01:22:59,385 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 179 transitions, 2076 flow [2024-06-28 01:22:59,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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) [2024-06-28 01:22:59,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:59,385 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:59,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 01:22:59,386 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:59,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:59,386 INFO L85 PathProgramCache]: Analyzing trace with hash 391222804, now seen corresponding path program 7 times [2024-06-28 01:22:59,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:59,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055168609] [2024-06-28 01:22:59,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:59,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:59,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:59,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:59,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:59,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055168609] [2024-06-28 01:22:59,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055168609] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:59,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:59,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:22:59,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977773940] [2024-06-28 01:22:59,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:59,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:22:59,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:59,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:22:59,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:22:59,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:22:59,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 179 transitions, 2076 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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) [2024-06-28 01:22:59,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:59,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:22:59,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:00,555 INFO L124 PetriNetUnfolderBase]: 1339/2457 cut-off events. [2024-06-28 01:23:00,555 INFO L125 PetriNetUnfolderBase]: For 19567/19567 co-relation queries the response was YES. [2024-06-28 01:23:00,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12309 conditions, 2457 events. 1339/2457 cut-off events. For 19567/19567 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 15608 event pairs, 280 based on Foata normal form. 3/2383 useless extension candidates. Maximal degree in co-relation 12241. Up to 1445 conditions per place. [2024-06-28 01:23:00,570 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 154 selfloop transitions, 83 changer transitions 0/244 dead transitions. [2024-06-28 01:23:00,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 244 transitions, 2940 flow [2024-06-28 01:23:00,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:23:00,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:23:00,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-28 01:23:00,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5185185185185185 [2024-06-28 01:23:00,572 INFO L175 Difference]: Start difference. First operand has 144 places, 179 transitions, 2076 flow. Second operand 9 states and 168 transitions. [2024-06-28 01:23:00,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 244 transitions, 2940 flow [2024-06-28 01:23:00,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 244 transitions, 2814 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-28 01:23:00,621 INFO L231 Difference]: Finished difference. Result has 149 places, 206 transitions, 2409 flow [2024-06-28 01:23:00,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1953, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2409, PETRI_PLACES=149, PETRI_TRANSITIONS=206} [2024-06-28 01:23:00,623 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 109 predicate places. [2024-06-28 01:23:00,623 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 206 transitions, 2409 flow [2024-06-28 01:23:00,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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) [2024-06-28 01:23:00,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:00,623 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:00,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 01:23:00,623 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:00,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:00,624 INFO L85 PathProgramCache]: Analyzing trace with hash -59297110, now seen corresponding path program 1 times [2024-06-28 01:23:00,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:00,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804992152] [2024-06-28 01:23:00,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:00,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:00,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:01,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:01,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:01,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804992152] [2024-06-28 01:23:01,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804992152] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:01,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:01,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:01,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792234179] [2024-06-28 01:23:01,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:01,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:01,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:01,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:01,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:01,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:23:01,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 206 transitions, 2409 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:01,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:01,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:23:01,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:02,160 INFO L124 PetriNetUnfolderBase]: 1336/2429 cut-off events. [2024-06-28 01:23:02,160 INFO L125 PetriNetUnfolderBase]: For 21425/21425 co-relation queries the response was YES. [2024-06-28 01:23:02,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13216 conditions, 2429 events. 1336/2429 cut-off events. For 21425/21425 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 15570 event pairs, 389 based on Foata normal form. 2/2355 useless extension candidates. Maximal degree in co-relation 13146. Up to 2061 conditions per place. [2024-06-28 01:23:02,178 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 206 selfloop transitions, 20 changer transitions 0/233 dead transitions. [2024-06-28 01:23:02,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 233 transitions, 2973 flow [2024-06-28 01:23:02,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:23:02,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:23:02,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 134 transitions. [2024-06-28 01:23:02,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4652777777777778 [2024-06-28 01:23:02,180 INFO L175 Difference]: Start difference. First operand has 149 places, 206 transitions, 2409 flow. Second operand 8 states and 134 transitions. [2024-06-28 01:23:02,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 233 transitions, 2973 flow [2024-06-28 01:23:02,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 233 transitions, 2905 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-28 01:23:02,230 INFO L231 Difference]: Finished difference. Result has 154 places, 208 transitions, 2410 flow [2024-06-28 01:23:02,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2341, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2410, PETRI_PLACES=154, PETRI_TRANSITIONS=208} [2024-06-28 01:23:02,232 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 114 predicate places. [2024-06-28 01:23:02,232 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 208 transitions, 2410 flow [2024-06-28 01:23:02,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:02,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:02,233 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:02,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 01:23:02,233 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:02,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:02,233 INFO L85 PathProgramCache]: Analyzing trace with hash -353262090, now seen corresponding path program 1 times [2024-06-28 01:23:02,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:02,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202659252] [2024-06-28 01:23:02,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:02,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:02,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:03,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:03,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:03,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202659252] [2024-06-28 01:23:03,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202659252] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:03,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:03,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:03,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139300320] [2024-06-28 01:23:03,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:03,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:03,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:03,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:03,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:03,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:23:03,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 208 transitions, 2410 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:03,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:03,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:23:03,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:03,741 INFO L124 PetriNetUnfolderBase]: 1375/2669 cut-off events. [2024-06-28 01:23:03,741 INFO L125 PetriNetUnfolderBase]: For 23422/23422 co-relation queries the response was YES. [2024-06-28 01:23:03,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13887 conditions, 2669 events. 1375/2669 cut-off events. For 23422/23422 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 18187 event pairs, 236 based on Foata normal form. 2/2550 useless extension candidates. Maximal degree in co-relation 13814. Up to 1959 conditions per place. [2024-06-28 01:23:03,760 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 217 selfloop transitions, 38 changer transitions 0/262 dead transitions. [2024-06-28 01:23:03,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 262 transitions, 3315 flow [2024-06-28 01:23:03,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:23:03,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:23:03,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 177 transitions. [2024-06-28 01:23:03,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49166666666666664 [2024-06-28 01:23:03,762 INFO L175 Difference]: Start difference. First operand has 154 places, 208 transitions, 2410 flow. Second operand 10 states and 177 transitions. [2024-06-28 01:23:03,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 262 transitions, 3315 flow [2024-06-28 01:23:03,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 262 transitions, 3264 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-28 01:23:03,818 INFO L231 Difference]: Finished difference. Result has 160 places, 211 transitions, 2487 flow [2024-06-28 01:23:03,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2363, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2487, PETRI_PLACES=160, PETRI_TRANSITIONS=211} [2024-06-28 01:23:03,818 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 120 predicate places. [2024-06-28 01:23:03,818 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 211 transitions, 2487 flow [2024-06-28 01:23:03,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:03,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:03,819 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:03,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 01:23:03,819 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:03,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:03,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1192096578, now seen corresponding path program 1 times [2024-06-28 01:23:03,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:03,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991931745] [2024-06-28 01:23:03,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:03,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:03,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:04,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:04,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:04,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991931745] [2024-06-28 01:23:04,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991931745] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:04,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:04,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:04,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77711457] [2024-06-28 01:23:04,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:04,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:04,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:04,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:04,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:04,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:23:04,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 211 transitions, 2487 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:04,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:04,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:23:04,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:05,377 INFO L124 PetriNetUnfolderBase]: 1408/2719 cut-off events. [2024-06-28 01:23:05,377 INFO L125 PetriNetUnfolderBase]: For 24916/24916 co-relation queries the response was YES. [2024-06-28 01:23:05,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14247 conditions, 2719 events. 1408/2719 cut-off events. For 24916/24916 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 18513 event pairs, 266 based on Foata normal form. 3/2603 useless extension candidates. Maximal degree in co-relation 14172. Up to 1902 conditions per place. [2024-06-28 01:23:05,397 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 218 selfloop transitions, 48 changer transitions 0/273 dead transitions. [2024-06-28 01:23:05,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 273 transitions, 3416 flow [2024-06-28 01:23:05,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:23:05,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:23:05,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 194 transitions. [2024-06-28 01:23:05,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4898989898989899 [2024-06-28 01:23:05,398 INFO L175 Difference]: Start difference. First operand has 160 places, 211 transitions, 2487 flow. Second operand 11 states and 194 transitions. [2024-06-28 01:23:05,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 273 transitions, 3416 flow [2024-06-28 01:23:05,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 273 transitions, 3342 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-28 01:23:05,454 INFO L231 Difference]: Finished difference. Result has 165 places, 214 transitions, 2560 flow [2024-06-28 01:23:05,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2413, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2560, PETRI_PLACES=165, PETRI_TRANSITIONS=214} [2024-06-28 01:23:05,455 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 125 predicate places. [2024-06-28 01:23:05,455 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 214 transitions, 2560 flow [2024-06-28 01:23:05,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:05,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:05,455 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:05,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 01:23:05,456 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:05,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:05,456 INFO L85 PathProgramCache]: Analyzing trace with hash -353201640, now seen corresponding path program 2 times [2024-06-28 01:23:05,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:05,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629722300] [2024-06-28 01:23:05,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:05,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:05,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:06,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:06,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:06,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629722300] [2024-06-28 01:23:06,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629722300] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:06,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:06,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:06,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94398468] [2024-06-28 01:23:06,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:06,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:06,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:06,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:06,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:06,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:23:06,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 214 transitions, 2560 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:06,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:06,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:23:06,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:06,869 INFO L124 PetriNetUnfolderBase]: 1405/2719 cut-off events. [2024-06-28 01:23:06,869 INFO L125 PetriNetUnfolderBase]: For 25289/25289 co-relation queries the response was YES. [2024-06-28 01:23:06,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14477 conditions, 2719 events. 1405/2719 cut-off events. For 25289/25289 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 18538 event pairs, 289 based on Foata normal form. 2/2600 useless extension candidates. Maximal degree in co-relation 14400. Up to 2070 conditions per place. [2024-06-28 01:23:06,889 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 219 selfloop transitions, 37 changer transitions 0/263 dead transitions. [2024-06-28 01:23:06,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 263 transitions, 3367 flow [2024-06-28 01:23:06,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:23:06,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:23:06,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 174 transitions. [2024-06-28 01:23:06,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48333333333333334 [2024-06-28 01:23:06,890 INFO L175 Difference]: Start difference. First operand has 165 places, 214 transitions, 2560 flow. Second operand 10 states and 174 transitions. [2024-06-28 01:23:06,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 263 transitions, 3367 flow [2024-06-28 01:23:06,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 263 transitions, 3248 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-28 01:23:06,956 INFO L231 Difference]: Finished difference. Result has 166 places, 214 transitions, 2519 flow [2024-06-28 01:23:06,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2441, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2519, PETRI_PLACES=166, PETRI_TRANSITIONS=214} [2024-06-28 01:23:06,956 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 126 predicate places. [2024-06-28 01:23:06,956 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 214 transitions, 2519 flow [2024-06-28 01:23:06,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:06,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:06,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:06,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 01:23:06,957 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:06,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:06,957 INFO L85 PathProgramCache]: Analyzing trace with hash -63241640, now seen corresponding path program 2 times [2024-06-28 01:23:06,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:06,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353250696] [2024-06-28 01:23:06,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:06,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:06,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:07,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:07,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:07,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353250696] [2024-06-28 01:23:07,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353250696] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:07,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:07,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:07,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309953541] [2024-06-28 01:23:07,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:07,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:07,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:07,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:07,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:07,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:23:07,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 214 transitions, 2519 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:07,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:07,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:23:07,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:08,117 INFO L124 PetriNetUnfolderBase]: 1438/2652 cut-off events. [2024-06-28 01:23:08,117 INFO L125 PetriNetUnfolderBase]: For 25937/25937 co-relation queries the response was YES. [2024-06-28 01:23:08,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14483 conditions, 2652 events. 1438/2652 cut-off events. For 25937/25937 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 17283 event pairs, 251 based on Foata normal form. 3/2568 useless extension candidates. Maximal degree in co-relation 14405. Up to 1233 conditions per place. [2024-06-28 01:23:08,137 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 155 selfloop transitions, 107 changer transitions 0/269 dead transitions. [2024-06-28 01:23:08,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 269 transitions, 3430 flow [2024-06-28 01:23:08,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:23:08,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:23:08,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-28 01:23:08,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5154320987654321 [2024-06-28 01:23:08,139 INFO L175 Difference]: Start difference. First operand has 166 places, 214 transitions, 2519 flow. Second operand 9 states and 167 transitions. [2024-06-28 01:23:08,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 269 transitions, 3430 flow [2024-06-28 01:23:08,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 269 transitions, 3358 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-28 01:23:08,205 INFO L231 Difference]: Finished difference. Result has 167 places, 217 transitions, 2717 flow [2024-06-28 01:23:08,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2447, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2717, PETRI_PLACES=167, PETRI_TRANSITIONS=217} [2024-06-28 01:23:08,206 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 127 predicate places. [2024-06-28 01:23:08,206 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 217 transitions, 2717 flow [2024-06-28 01:23:08,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:08,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:08,206 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:08,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 01:23:08,207 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:08,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:08,207 INFO L85 PathProgramCache]: Analyzing trace with hash -63414620, now seen corresponding path program 3 times [2024-06-28 01:23:08,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:08,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651030374] [2024-06-28 01:23:08,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:08,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:08,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:08,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:08,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:08,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651030374] [2024-06-28 01:23:08,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651030374] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:08,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:08,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:08,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348890807] [2024-06-28 01:23:08,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:08,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:08,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:08,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:08,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:08,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:23:08,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 217 transitions, 2717 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:08,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:08,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:23:08,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:09,430 INFO L124 PetriNetUnfolderBase]: 1471/2718 cut-off events. [2024-06-28 01:23:09,430 INFO L125 PetriNetUnfolderBase]: For 29900/29900 co-relation queries the response was YES. [2024-06-28 01:23:09,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15579 conditions, 2718 events. 1471/2718 cut-off events. For 29900/29900 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 17803 event pairs, 254 based on Foata normal form. 3/2631 useless extension candidates. Maximal degree in co-relation 15500. Up to 1284 conditions per place. [2024-06-28 01:23:09,450 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 170 selfloop transitions, 102 changer transitions 0/279 dead transitions. [2024-06-28 01:23:09,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 279 transitions, 3724 flow [2024-06-28 01:23:09,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:23:09,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:23:09,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-28 01:23:09,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5246913580246914 [2024-06-28 01:23:09,451 INFO L175 Difference]: Start difference. First operand has 167 places, 217 transitions, 2717 flow. Second operand 9 states and 170 transitions. [2024-06-28 01:23:09,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 279 transitions, 3724 flow [2024-06-28 01:23:09,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 279 transitions, 3490 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-28 01:23:09,526 INFO L231 Difference]: Finished difference. Result has 169 places, 220 transitions, 2749 flow [2024-06-28 01:23:09,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2483, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2749, PETRI_PLACES=169, PETRI_TRANSITIONS=220} [2024-06-28 01:23:09,527 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 129 predicate places. [2024-06-28 01:23:09,527 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 220 transitions, 2749 flow [2024-06-28 01:23:09,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:09,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:09,528 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:09,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 01:23:09,528 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:09,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:09,528 INFO L85 PathProgramCache]: Analyzing trace with hash -235113960, now seen corresponding path program 3 times [2024-06-28 01:23:09,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:09,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229296922] [2024-06-28 01:23:09,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:09,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:09,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:10,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:10,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:10,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229296922] [2024-06-28 01:23:10,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229296922] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:10,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:10,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:10,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076657962] [2024-06-28 01:23:10,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:10,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:10,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:10,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:10,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:10,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:23:10,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 220 transitions, 2749 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:10,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:10,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:23:10,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:10,889 INFO L124 PetriNetUnfolderBase]: 1490/2836 cut-off events. [2024-06-28 01:23:10,889 INFO L125 PetriNetUnfolderBase]: For 31599/31599 co-relation queries the response was YES. [2024-06-28 01:23:10,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15990 conditions, 2836 events. 1490/2836 cut-off events. For 31599/31599 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 19350 event pairs, 301 based on Foata normal form. 2/2718 useless extension candidates. Maximal degree in co-relation 15910. Up to 2134 conditions per place. [2024-06-28 01:23:10,911 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 194 selfloop transitions, 61 changer transitions 0/262 dead transitions. [2024-06-28 01:23:10,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 262 transitions, 3532 flow [2024-06-28 01:23:10,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:23:10,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:23:10,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-28 01:23:10,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2024-06-28 01:23:10,914 INFO L175 Difference]: Start difference. First operand has 169 places, 220 transitions, 2749 flow. Second operand 9 states and 156 transitions. [2024-06-28 01:23:10,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 262 transitions, 3532 flow [2024-06-28 01:23:10,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 262 transitions, 3302 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-28 01:23:11,003 INFO L231 Difference]: Finished difference. Result has 172 places, 223 transitions, 2686 flow [2024-06-28 01:23:11,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2519, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2686, PETRI_PLACES=172, PETRI_TRANSITIONS=223} [2024-06-28 01:23:11,004 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 132 predicate places. [2024-06-28 01:23:11,004 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 223 transitions, 2686 flow [2024-06-28 01:23:11,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:11,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:11,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:11,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 01:23:11,005 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:11,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:11,005 INFO L85 PathProgramCache]: Analyzing trace with hash -235113836, now seen corresponding path program 4 times [2024-06-28 01:23:11,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:11,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009315474] [2024-06-28 01:23:11,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:11,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:11,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:11,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:11,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:11,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009315474] [2024-06-28 01:23:11,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009315474] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:11,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:11,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:11,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76319420] [2024-06-28 01:23:11,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:11,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:11,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:11,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:11,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:11,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:23:11,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 223 transitions, 2686 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:11,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:11,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:23:11,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:12,157 INFO L124 PetriNetUnfolderBase]: 1513/2808 cut-off events. [2024-06-28 01:23:12,157 INFO L125 PetriNetUnfolderBase]: For 30652/30652 co-relation queries the response was YES. [2024-06-28 01:23:12,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15745 conditions, 2808 events. 1513/2808 cut-off events. For 30652/30652 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 18623 event pairs, 212 based on Foata normal form. 1/2716 useless extension candidates. Maximal degree in co-relation 15663. Up to 1837 conditions per place. [2024-06-28 01:23:12,182 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 204 selfloop transitions, 100 changer transitions 0/311 dead transitions. [2024-06-28 01:23:12,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 311 transitions, 4098 flow [2024-06-28 01:23:12,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:23:12,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:23:12,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-28 01:23:12,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:23:12,185 INFO L175 Difference]: Start difference. First operand has 172 places, 223 transitions, 2686 flow. Second operand 9 states and 162 transitions. [2024-06-28 01:23:12,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 311 transitions, 4098 flow [2024-06-28 01:23:12,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 311 transitions, 3969 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-28 01:23:12,280 INFO L231 Difference]: Finished difference. Result has 179 places, 261 transitions, 3387 flow [2024-06-28 01:23:12,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2557, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3387, PETRI_PLACES=179, PETRI_TRANSITIONS=261} [2024-06-28 01:23:12,281 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 139 predicate places. [2024-06-28 01:23:12,281 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 261 transitions, 3387 flow [2024-06-28 01:23:12,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:12,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:12,281 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:12,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 01:23:12,281 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:12,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:12,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1838546338, now seen corresponding path program 1 times [2024-06-28 01:23:12,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:12,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880163900] [2024-06-28 01:23:12,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:12,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:12,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:12,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:12,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:12,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880163900] [2024-06-28 01:23:12,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880163900] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:12,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:12,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:12,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333375903] [2024-06-28 01:23:12,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:12,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:12,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:12,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:12,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:13,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:23:13,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 261 transitions, 3387 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:13,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:13,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:23:13,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:13,586 INFO L124 PetriNetUnfolderBase]: 1515/2712 cut-off events. [2024-06-28 01:23:13,587 INFO L125 PetriNetUnfolderBase]: For 33948/33948 co-relation queries the response was YES. [2024-06-28 01:23:13,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16598 conditions, 2712 events. 1515/2712 cut-off events. For 33948/33948 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 17541 event pairs, 428 based on Foata normal form. 2/2644 useless extension candidates. Maximal degree in co-relation 16511. Up to 2340 conditions per place. [2024-06-28 01:23:13,609 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 264 selfloop transitions, 19 changer transitions 0/290 dead transitions. [2024-06-28 01:23:13,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 290 transitions, 4109 flow [2024-06-28 01:23:13,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:23:13,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:23:13,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 149 transitions. [2024-06-28 01:23:13,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45987654320987653 [2024-06-28 01:23:13,610 INFO L175 Difference]: Start difference. First operand has 179 places, 261 transitions, 3387 flow. Second operand 9 states and 149 transitions. [2024-06-28 01:23:13,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 290 transitions, 4109 flow [2024-06-28 01:23:13,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 290 transitions, 4007 flow, removed 42 selfloop flow, removed 3 redundant places. [2024-06-28 01:23:13,733 INFO L231 Difference]: Finished difference. Result has 185 places, 263 transitions, 3368 flow [2024-06-28 01:23:13,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3285, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3368, PETRI_PLACES=185, PETRI_TRANSITIONS=263} [2024-06-28 01:23:13,733 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 145 predicate places. [2024-06-28 01:23:13,733 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 263 transitions, 3368 flow [2024-06-28 01:23:13,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:13,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:13,734 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:13,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 01:23:13,734 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:13,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:13,734 INFO L85 PathProgramCache]: Analyzing trace with hash 331245204, now seen corresponding path program 5 times [2024-06-28 01:23:13,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:13,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243195339] [2024-06-28 01:23:13,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:13,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:13,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:14,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:14,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:14,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243195339] [2024-06-28 01:23:14,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243195339] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:14,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:14,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:14,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788284338] [2024-06-28 01:23:14,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:14,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:14,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:14,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:14,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:14,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:23:14,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 263 transitions, 3368 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:14,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:14,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:23:14,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:15,119 INFO L124 PetriNetUnfolderBase]: 1548/2823 cut-off events. [2024-06-28 01:23:15,119 INFO L125 PetriNetUnfolderBase]: For 33750/33750 co-relation queries the response was YES. [2024-06-28 01:23:15,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16630 conditions, 2823 events. 1548/2823 cut-off events. For 33750/33750 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 18672 event pairs, 450 based on Foata normal form. 3/2741 useless extension candidates. Maximal degree in co-relation 16542. Up to 2284 conditions per place. [2024-06-28 01:23:15,143 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 269 selfloop transitions, 27 changer transitions 0/303 dead transitions. [2024-06-28 01:23:15,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 303 transitions, 4238 flow [2024-06-28 01:23:15,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:23:15,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:23:15,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-28 01:23:15,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-28 01:23:15,144 INFO L175 Difference]: Start difference. First operand has 185 places, 263 transitions, 3368 flow. Second operand 9 states and 153 transitions. [2024-06-28 01:23:15,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 303 transitions, 4238 flow [2024-06-28 01:23:15,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 303 transitions, 4171 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-28 01:23:15,351 INFO L231 Difference]: Finished difference. Result has 187 places, 266 transitions, 3427 flow [2024-06-28 01:23:15,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3301, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3427, PETRI_PLACES=187, PETRI_TRANSITIONS=266} [2024-06-28 01:23:15,352 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 147 predicate places. [2024-06-28 01:23:15,352 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 266 transitions, 3427 flow [2024-06-28 01:23:15,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:15,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:15,352 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:15,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 01:23:15,352 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:15,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:15,353 INFO L85 PathProgramCache]: Analyzing trace with hash 75465444, now seen corresponding path program 6 times [2024-06-28 01:23:15,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:15,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115733786] [2024-06-28 01:23:15,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:15,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:15,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:16,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:16,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:16,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115733786] [2024-06-28 01:23:16,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115733786] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:16,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:16,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:16,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485769095] [2024-06-28 01:23:16,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:16,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:16,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:16,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:16,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:16,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:23:16,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 266 transitions, 3427 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:16,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:16,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:23:16,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:16,785 INFO L124 PetriNetUnfolderBase]: 1581/2918 cut-off events. [2024-06-28 01:23:16,786 INFO L125 PetriNetUnfolderBase]: For 36396/36396 co-relation queries the response was YES. [2024-06-28 01:23:16,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17151 conditions, 2918 events. 1581/2918 cut-off events. For 36396/36396 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 19572 event pairs, 422 based on Foata normal form. 3/2826 useless extension candidates. Maximal degree in co-relation 17062. Up to 2123 conditions per place. [2024-06-28 01:23:16,810 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 254 selfloop transitions, 54 changer transitions 0/315 dead transitions. [2024-06-28 01:23:16,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 315 transitions, 4413 flow [2024-06-28 01:23:16,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:23:16,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:23:16,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-28 01:23:16,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49074074074074076 [2024-06-28 01:23:16,811 INFO L175 Difference]: Start difference. First operand has 187 places, 266 transitions, 3427 flow. Second operand 9 states and 159 transitions. [2024-06-28 01:23:16,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 315 transitions, 4413 flow [2024-06-28 01:23:16,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 315 transitions, 4323 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-28 01:23:16,982 INFO L231 Difference]: Finished difference. Result has 189 places, 269 transitions, 3523 flow [2024-06-28 01:23:16,982 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3337, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3523, PETRI_PLACES=189, PETRI_TRANSITIONS=269} [2024-06-28 01:23:16,991 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 149 predicate places. [2024-06-28 01:23:16,991 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 269 transitions, 3523 flow [2024-06-28 01:23:16,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:16,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:16,991 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:16,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 01:23:16,991 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:16,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:16,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1119160672, now seen corresponding path program 4 times [2024-06-28 01:23:16,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:16,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108481832] [2024-06-28 01:23:16,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:16,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:17,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:17,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:17,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:17,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108481832] [2024-06-28 01:23:17,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108481832] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:17,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:17,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:17,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787190470] [2024-06-28 01:23:17,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:17,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:17,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:17,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:17,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:17,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:23:17,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 269 transitions, 3523 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:17,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:17,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:23:17,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:18,290 INFO L124 PetriNetUnfolderBase]: 1585/2882 cut-off events. [2024-06-28 01:23:18,290 INFO L125 PetriNetUnfolderBase]: For 35312/35312 co-relation queries the response was YES. [2024-06-28 01:23:18,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17152 conditions, 2882 events. 1585/2882 cut-off events. For 35312/35312 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 19145 event pairs, 456 based on Foata normal form. 2/2800 useless extension candidates. Maximal degree in co-relation 17062. Up to 2456 conditions per place. [2024-06-28 01:23:18,360 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 272 selfloop transitions, 24 changer transitions 0/303 dead transitions. [2024-06-28 01:23:18,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 303 transitions, 4326 flow [2024-06-28 01:23:18,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:23:18,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:23:18,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 148 transitions. [2024-06-28 01:23:18,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4567901234567901 [2024-06-28 01:23:18,362 INFO L175 Difference]: Start difference. First operand has 189 places, 269 transitions, 3523 flow. Second operand 9 states and 148 transitions. [2024-06-28 01:23:18,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 303 transitions, 4326 flow [2024-06-28 01:23:18,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 303 transitions, 4176 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-28 01:23:18,505 INFO L231 Difference]: Finished difference. Result has 192 places, 272 transitions, 3464 flow [2024-06-28 01:23:18,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3373, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3464, PETRI_PLACES=192, PETRI_TRANSITIONS=272} [2024-06-28 01:23:18,507 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 152 predicate places. [2024-06-28 01:23:18,507 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 272 transitions, 3464 flow [2024-06-28 01:23:18,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:18,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:18,508 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:18,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 01:23:18,508 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:18,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:18,509 INFO L85 PathProgramCache]: Analyzing trace with hash 75460794, now seen corresponding path program 7 times [2024-06-28 01:23:18,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:18,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092633274] [2024-06-28 01:23:18,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:18,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:18,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:19,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:19,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:19,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092633274] [2024-06-28 01:23:19,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092633274] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:19,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:19,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:19,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274607884] [2024-06-28 01:23:19,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:19,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:19,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:19,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:19,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:19,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:23:19,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 272 transitions, 3464 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:19,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:19,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:23:19,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:20,042 INFO L124 PetriNetUnfolderBase]: 1625/2992 cut-off events. [2024-06-28 01:23:20,043 INFO L125 PetriNetUnfolderBase]: For 36962/36962 co-relation queries the response was YES. [2024-06-28 01:23:20,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17434 conditions, 2992 events. 1625/2992 cut-off events. For 36962/36962 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 20146 event pairs, 419 based on Foata normal form. 1/2897 useless extension candidates. Maximal degree in co-relation 17342. Up to 2061 conditions per place. [2024-06-28 01:23:20,062 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 259 selfloop transitions, 64 changer transitions 0/330 dead transitions. [2024-06-28 01:23:20,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 330 transitions, 4640 flow [2024-06-28 01:23:20,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:23:20,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:23:20,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 179 transitions. [2024-06-28 01:23:20,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49722222222222223 [2024-06-28 01:23:20,063 INFO L175 Difference]: Start difference. First operand has 192 places, 272 transitions, 3464 flow. Second operand 10 states and 179 transitions. [2024-06-28 01:23:20,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 330 transitions, 4640 flow [2024-06-28 01:23:20,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 330 transitions, 4581 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-28 01:23:20,199 INFO L231 Difference]: Finished difference. Result has 197 places, 277 transitions, 3683 flow [2024-06-28 01:23:20,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3405, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3683, PETRI_PLACES=197, PETRI_TRANSITIONS=277} [2024-06-28 01:23:20,199 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 157 predicate places. [2024-06-28 01:23:20,199 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 277 transitions, 3683 flow [2024-06-28 01:23:20,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:20,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:20,200 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:20,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 01:23:20,200 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:20,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:20,200 INFO L85 PathProgramCache]: Analyzing trace with hash 75638424, now seen corresponding path program 8 times [2024-06-28 01:23:20,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:20,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096836855] [2024-06-28 01:23:20,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:20,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:20,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:20,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:20,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:20,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096836855] [2024-06-28 01:23:20,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096836855] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:20,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:20,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:20,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469936396] [2024-06-28 01:23:20,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:20,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:20,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:20,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:20,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:20,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:23:20,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 277 transitions, 3683 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:20,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:20,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:23:20,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:21,548 INFO L124 PetriNetUnfolderBase]: 1619/2999 cut-off events. [2024-06-28 01:23:21,549 INFO L125 PetriNetUnfolderBase]: For 38482/38482 co-relation queries the response was YES. [2024-06-28 01:23:21,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17664 conditions, 2999 events. 1619/2999 cut-off events. For 38482/38482 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 20270 event pairs, 429 based on Foata normal form. 3/2902 useless extension candidates. Maximal degree in co-relation 17570. Up to 2184 conditions per place. [2024-06-28 01:23:21,574 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 271 selfloop transitions, 51 changer transitions 0/329 dead transitions. [2024-06-28 01:23:21,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 329 transitions, 4697 flow [2024-06-28 01:23:21,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:23:21,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:23:21,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-28 01:23:21,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49382716049382713 [2024-06-28 01:23:21,576 INFO L175 Difference]: Start difference. First operand has 197 places, 277 transitions, 3683 flow. Second operand 9 states and 160 transitions. [2024-06-28 01:23:21,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 329 transitions, 4697 flow [2024-06-28 01:23:21,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 329 transitions, 4554 flow, removed 38 selfloop flow, removed 6 redundant places. [2024-06-28 01:23:21,734 INFO L231 Difference]: Finished difference. Result has 200 places, 277 transitions, 3652 flow [2024-06-28 01:23:21,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3540, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3652, PETRI_PLACES=200, PETRI_TRANSITIONS=277} [2024-06-28 01:23:21,736 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 160 predicate places. [2024-06-28 01:23:21,736 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 277 transitions, 3652 flow [2024-06-28 01:23:21,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:21,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:21,743 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:21,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 01:23:21,745 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:21,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:21,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1423296720, now seen corresponding path program 1 times [2024-06-28 01:23:21,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:21,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834039093] [2024-06-28 01:23:21,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:21,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:21,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:21,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:21,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:21,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834039093] [2024-06-28 01:23:21,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834039093] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:21,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:21,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:23:21,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822340638] [2024-06-28 01:23:21,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:21,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:23:21,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:21,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:23:21,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:23:21,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 36 [2024-06-28 01:23:21,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 277 transitions, 3652 flow. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:21,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:21,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 36 [2024-06-28 01:23:21,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:22,736 INFO L124 PetriNetUnfolderBase]: 2304/4069 cut-off events. [2024-06-28 01:23:22,736 INFO L125 PetriNetUnfolderBase]: For 38981/39230 co-relation queries the response was YES. [2024-06-28 01:23:22,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23030 conditions, 4069 events. 2304/4069 cut-off events. For 38981/39230 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 27559 event pairs, 383 based on Foata normal form. 134/3984 useless extension candidates. Maximal degree in co-relation 22935. Up to 1921 conditions per place. [2024-06-28 01:23:22,777 INFO L140 encePairwiseOnDemand]: 30/36 looper letters, 196 selfloop transitions, 41 changer transitions 207/559 dead transitions. [2024-06-28 01:23:22,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 559 transitions, 8311 flow [2024-06-28 01:23:22,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:23:22,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:23:22,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 170 transitions. [2024-06-28 01:23:22,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5902777777777778 [2024-06-28 01:23:22,779 INFO L175 Difference]: Start difference. First operand has 200 places, 277 transitions, 3652 flow. Second operand 8 states and 170 transitions. [2024-06-28 01:23:22,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 559 transitions, 8311 flow [2024-06-28 01:23:22,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 559 transitions, 8085 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-28 01:23:22,949 INFO L231 Difference]: Finished difference. Result has 205 places, 280 transitions, 3710 flow [2024-06-28 01:23:22,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3529, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3710, PETRI_PLACES=205, PETRI_TRANSITIONS=280} [2024-06-28 01:23:22,950 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 165 predicate places. [2024-06-28 01:23:22,950 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 280 transitions, 3710 flow [2024-06-28 01:23:22,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:22,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:22,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:22,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 01:23:22,950 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:22,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:22,951 INFO L85 PathProgramCache]: Analyzing trace with hash 341133445, now seen corresponding path program 1 times [2024-06-28 01:23:22,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:22,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326483650] [2024-06-28 01:23:22,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:22,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:22,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:23,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:23,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:23,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326483650] [2024-06-28 01:23:23,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326483650] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:23,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:23,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:23:23,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36535470] [2024-06-28 01:23:23,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:23,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:23:23,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:23,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:23:23,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:23:23,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:23:23,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 280 transitions, 3710 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:23,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:23,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:23:23,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:24,656 INFO L124 PetriNetUnfolderBase]: 1716/3290 cut-off events. [2024-06-28 01:23:24,656 INFO L125 PetriNetUnfolderBase]: For 51860/51888 co-relation queries the response was YES. [2024-06-28 01:23:24,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20211 conditions, 3290 events. 1716/3290 cut-off events. For 51860/51888 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 23182 event pairs, 301 based on Foata normal form. 30/3309 useless extension candidates. Maximal degree in co-relation 20110. Up to 2081 conditions per place. [2024-06-28 01:23:24,685 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 287 selfloop transitions, 49 changer transitions 8/352 dead transitions. [2024-06-28 01:23:24,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 352 transitions, 5007 flow [2024-06-28 01:23:24,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:23:24,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:23:24,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 205 transitions. [2024-06-28 01:23:24,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5176767676767676 [2024-06-28 01:23:24,687 INFO L175 Difference]: Start difference. First operand has 205 places, 280 transitions, 3710 flow. Second operand 11 states and 205 transitions. [2024-06-28 01:23:24,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 352 transitions, 5007 flow [2024-06-28 01:23:24,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 352 transitions, 4995 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-06-28 01:23:24,888 INFO L231 Difference]: Finished difference. Result has 212 places, 280 transitions, 3844 flow [2024-06-28 01:23:24,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3706, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3844, PETRI_PLACES=212, PETRI_TRANSITIONS=280} [2024-06-28 01:23:24,889 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 172 predicate places. [2024-06-28 01:23:24,889 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 280 transitions, 3844 flow [2024-06-28 01:23:24,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:24,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:24,889 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:24,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 01:23:24,889 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:24,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:24,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1935656492, now seen corresponding path program 1 times [2024-06-28 01:23:24,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:24,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111717201] [2024-06-28 01:23:24,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:24,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:24,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:25,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:25,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:25,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111717201] [2024-06-28 01:23:25,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111717201] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:25,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:25,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:23:25,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741936399] [2024-06-28 01:23:25,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:25,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:23:25,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:25,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:23:25,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:23:25,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:23:25,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 280 transitions, 3844 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:25,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:25,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:23:25,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:26,590 INFO L124 PetriNetUnfolderBase]: 1736/3330 cut-off events. [2024-06-28 01:23:26,591 INFO L125 PetriNetUnfolderBase]: For 57854/57879 co-relation queries the response was YES. [2024-06-28 01:23:26,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20705 conditions, 3330 events. 1736/3330 cut-off events. For 57854/57879 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 23234 event pairs, 368 based on Foata normal form. 27/3342 useless extension candidates. Maximal degree in co-relation 20602. Up to 2397 conditions per place. [2024-06-28 01:23:26,618 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 278 selfloop transitions, 68 changer transitions 0/354 dead transitions. [2024-06-28 01:23:26,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 354 transitions, 5335 flow [2024-06-28 01:23:26,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:23:26,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:23:26,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 196 transitions. [2024-06-28 01:23:26,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.494949494949495 [2024-06-28 01:23:26,620 INFO L175 Difference]: Start difference. First operand has 212 places, 280 transitions, 3844 flow. Second operand 11 states and 196 transitions. [2024-06-28 01:23:26,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 354 transitions, 5335 flow [2024-06-28 01:23:26,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 354 transitions, 5153 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-28 01:23:26,825 INFO L231 Difference]: Finished difference. Result has 215 places, 294 transitions, 4147 flow [2024-06-28 01:23:26,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3673, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4147, PETRI_PLACES=215, PETRI_TRANSITIONS=294} [2024-06-28 01:23:26,825 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 175 predicate places. [2024-06-28 01:23:26,825 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 294 transitions, 4147 flow [2024-06-28 01:23:26,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:26,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:26,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:26,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 01:23:26,826 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:26,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:26,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1935652617, now seen corresponding path program 2 times [2024-06-28 01:23:26,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:26,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610683860] [2024-06-28 01:23:26,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:26,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:26,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:27,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:27,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:27,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610683860] [2024-06-28 01:23:27,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610683860] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:27,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:27,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:23:27,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551817108] [2024-06-28 01:23:27,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:27,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:23:27,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:27,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:23:27,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:23:27,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:23:27,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 294 transitions, 4147 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:27,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:27,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:23:27,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:28,638 INFO L124 PetriNetUnfolderBase]: 1752/3320 cut-off events. [2024-06-28 01:23:28,639 INFO L125 PetriNetUnfolderBase]: For 61226/61253 co-relation queries the response was YES. [2024-06-28 01:23:28,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20887 conditions, 3320 events. 1752/3320 cut-off events. For 61226/61253 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 23085 event pairs, 336 based on Foata normal form. 29/3227 useless extension candidates. Maximal degree in co-relation 20782. Up to 2199 conditions per place. [2024-06-28 01:23:28,663 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 298 selfloop transitions, 52 changer transitions 0/358 dead transitions. [2024-06-28 01:23:28,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 358 transitions, 5402 flow [2024-06-28 01:23:28,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:23:28,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:23:28,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 200 transitions. [2024-06-28 01:23:28,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5050505050505051 [2024-06-28 01:23:28,674 INFO L175 Difference]: Start difference. First operand has 215 places, 294 transitions, 4147 flow. Second operand 11 states and 200 transitions. [2024-06-28 01:23:28,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 358 transitions, 5402 flow [2024-06-28 01:23:28,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 358 transitions, 5215 flow, removed 75 selfloop flow, removed 4 redundant places. [2024-06-28 01:23:28,855 INFO L231 Difference]: Finished difference. Result has 222 places, 295 transitions, 4092 flow [2024-06-28 01:23:28,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3960, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4092, PETRI_PLACES=222, PETRI_TRANSITIONS=295} [2024-06-28 01:23:28,856 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 182 predicate places. [2024-06-28 01:23:28,856 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 295 transitions, 4092 flow [2024-06-28 01:23:28,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:28,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:28,857 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:28,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 01:23:28,857 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:28,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:28,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1331746709, now seen corresponding path program 3 times [2024-06-28 01:23:28,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:28,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654202141] [2024-06-28 01:23:28,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:28,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:28,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:29,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:29,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:29,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654202141] [2024-06-28 01:23:29,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654202141] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:29,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:29,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:23:29,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713200518] [2024-06-28 01:23:29,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:29,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:23:29,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:29,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:23:29,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:23:29,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:23:29,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 295 transitions, 4092 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:29,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:29,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:23:29,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:30,542 INFO L124 PetriNetUnfolderBase]: 1733/3283 cut-off events. [2024-06-28 01:23:30,542 INFO L125 PetriNetUnfolderBase]: For 59745/59770 co-relation queries the response was YES. [2024-06-28 01:23:30,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20085 conditions, 3283 events. 1733/3283 cut-off events. For 59745/59770 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 22765 event pairs, 332 based on Foata normal form. 39/3202 useless extension candidates. Maximal degree in co-relation 19978. Up to 2246 conditions per place. [2024-06-28 01:23:30,575 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 294 selfloop transitions, 57 changer transitions 0/359 dead transitions. [2024-06-28 01:23:30,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 359 transitions, 5259 flow [2024-06-28 01:23:30,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:23:30,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:23:30,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 210 transitions. [2024-06-28 01:23:30,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4861111111111111 [2024-06-28 01:23:30,576 INFO L175 Difference]: Start difference. First operand has 222 places, 295 transitions, 4092 flow. Second operand 12 states and 210 transitions. [2024-06-28 01:23:30,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 359 transitions, 5259 flow [2024-06-28 01:23:30,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 359 transitions, 5141 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-28 01:23:30,793 INFO L231 Difference]: Finished difference. Result has 225 places, 295 transitions, 4098 flow [2024-06-28 01:23:30,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3974, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4098, PETRI_PLACES=225, PETRI_TRANSITIONS=295} [2024-06-28 01:23:30,794 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 185 predicate places. [2024-06-28 01:23:30,794 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 295 transitions, 4098 flow [2024-06-28 01:23:30,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:30,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:30,794 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:30,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 01:23:30,795 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:30,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:30,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1245054744, now seen corresponding path program 2 times [2024-06-28 01:23:30,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:30,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753123290] [2024-06-28 01:23:30,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:30,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:30,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:31,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:31,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:31,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753123290] [2024-06-28 01:23:31,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753123290] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:31,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:31,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:23:31,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786971684] [2024-06-28 01:23:31,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:31,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:23:31,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:31,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:23:31,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:23:31,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:23:31,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 295 transitions, 4098 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:31,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:31,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:23:31,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:32,555 INFO L124 PetriNetUnfolderBase]: 1769/3388 cut-off events. [2024-06-28 01:23:32,556 INFO L125 PetriNetUnfolderBase]: For 50980/51004 co-relation queries the response was YES. [2024-06-28 01:23:32,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20585 conditions, 3388 events. 1769/3388 cut-off events. For 50980/51004 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 23738 event pairs, 367 based on Foata normal form. 26/3282 useless extension candidates. Maximal degree in co-relation 20477. Up to 2489 conditions per place. [2024-06-28 01:23:32,586 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 284 selfloop transitions, 62 changer transitions 0/354 dead transitions. [2024-06-28 01:23:32,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 354 transitions, 5393 flow [2024-06-28 01:23:32,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:23:32,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:23:32,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 177 transitions. [2024-06-28 01:23:32,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49166666666666664 [2024-06-28 01:23:32,597 INFO L175 Difference]: Start difference. First operand has 225 places, 295 transitions, 4098 flow. Second operand 10 states and 177 transitions. [2024-06-28 01:23:32,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 354 transitions, 5393 flow [2024-06-28 01:23:32,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 354 transitions, 5272 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-28 01:23:32,792 INFO L231 Difference]: Finished difference. Result has 226 places, 302 transitions, 4296 flow [2024-06-28 01:23:32,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3981, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4296, PETRI_PLACES=226, PETRI_TRANSITIONS=302} [2024-06-28 01:23:32,792 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 186 predicate places. [2024-06-28 01:23:32,792 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 302 transitions, 4296 flow [2024-06-28 01:23:32,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:32,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:32,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:32,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 01:23:32,793 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:32,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:32,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1204863606, now seen corresponding path program 3 times [2024-06-28 01:23:32,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:32,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242365105] [2024-06-28 01:23:32,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:32,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:32,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:33,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:33,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:33,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242365105] [2024-06-28 01:23:33,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242365105] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:33,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:33,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:23:33,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25282225] [2024-06-28 01:23:33,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:33,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:23:33,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:33,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:23:33,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:23:33,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:23:33,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 302 transitions, 4296 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:33,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:33,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:23:33,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:34,458 INFO L124 PetriNetUnfolderBase]: 1771/3392 cut-off events. [2024-06-28 01:23:34,459 INFO L125 PetriNetUnfolderBase]: For 51329/51353 co-relation queries the response was YES. [2024-06-28 01:23:34,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20668 conditions, 3392 events. 1771/3392 cut-off events. For 51329/51353 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 23780 event pairs, 367 based on Foata normal form. 26/3286 useless extension candidates. Maximal degree in co-relation 20557. Up to 2549 conditions per place. [2024-06-28 01:23:34,495 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 284 selfloop transitions, 63 changer transitions 0/355 dead transitions. [2024-06-28 01:23:34,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 355 transitions, 5431 flow [2024-06-28 01:23:34,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:23:34,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:23:34,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 173 transitions. [2024-06-28 01:23:34,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48055555555555557 [2024-06-28 01:23:34,497 INFO L175 Difference]: Start difference. First operand has 226 places, 302 transitions, 4296 flow. Second operand 10 states and 173 transitions. [2024-06-28 01:23:34,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 355 transitions, 5431 flow [2024-06-28 01:23:34,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 355 transitions, 5163 flow, removed 68 selfloop flow, removed 7 redundant places. [2024-06-28 01:23:34,707 INFO L231 Difference]: Finished difference. Result has 231 places, 307 transitions, 4325 flow [2024-06-28 01:23:34,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4056, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4325, PETRI_PLACES=231, PETRI_TRANSITIONS=307} [2024-06-28 01:23:34,707 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 191 predicate places. [2024-06-28 01:23:34,708 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 307 transitions, 4325 flow [2024-06-28 01:23:34,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:34,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:34,708 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:34,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 01:23:34,708 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:34,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:34,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1960273914, now seen corresponding path program 1 times [2024-06-28 01:23:34,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:34,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018613478] [2024-06-28 01:23:34,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:34,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:34,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:35,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:35,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:35,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018613478] [2024-06-28 01:23:35,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018613478] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:35,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:35,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:35,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406921461] [2024-06-28 01:23:35,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:35,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:35,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:35,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:35,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:35,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:23:35,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 307 transitions, 4325 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:35,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:35,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:23:35,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:36,271 INFO L124 PetriNetUnfolderBase]: 1787/3300 cut-off events. [2024-06-28 01:23:36,271 INFO L125 PetriNetUnfolderBase]: For 51060/51082 co-relation queries the response was YES. [2024-06-28 01:23:36,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20407 conditions, 3300 events. 1787/3300 cut-off events. For 51060/51082 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 22599 event pairs, 364 based on Foata normal form. 24/3202 useless extension candidates. Maximal degree in co-relation 20293. Up to 2576 conditions per place. [2024-06-28 01:23:36,304 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 283 selfloop transitions, 57 changer transitions 0/348 dead transitions. [2024-06-28 01:23:36,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 348 transitions, 5276 flow [2024-06-28 01:23:36,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:23:36,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:23:36,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-28 01:23:36,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4876543209876543 [2024-06-28 01:23:36,306 INFO L175 Difference]: Start difference. First operand has 231 places, 307 transitions, 4325 flow. Second operand 9 states and 158 transitions. [2024-06-28 01:23:36,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 348 transitions, 5276 flow [2024-06-28 01:23:36,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 348 transitions, 5135 flow, removed 39 selfloop flow, removed 5 redundant places. [2024-06-28 01:23:36,510 INFO L231 Difference]: Finished difference. Result has 236 places, 309 transitions, 4348 flow [2024-06-28 01:23:36,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4184, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4348, PETRI_PLACES=236, PETRI_TRANSITIONS=309} [2024-06-28 01:23:36,511 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 196 predicate places. [2024-06-28 01:23:36,511 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 309 transitions, 4348 flow [2024-06-28 01:23:36,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:36,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:36,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:36,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 01:23:36,511 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:36,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:36,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1960489395, now seen corresponding path program 4 times [2024-06-28 01:23:36,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:36,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218270591] [2024-06-28 01:23:36,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:36,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:36,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:37,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:37,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:37,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218270591] [2024-06-28 01:23:37,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218270591] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:37,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:37,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:23:37,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007902658] [2024-06-28 01:23:37,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:37,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:23:37,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:37,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:23:37,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:23:37,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:23:37,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 309 transitions, 4348 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:37,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:37,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:23:37,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:38,116 INFO L124 PetriNetUnfolderBase]: 1809/3478 cut-off events. [2024-06-28 01:23:38,117 INFO L125 PetriNetUnfolderBase]: For 52293/52318 co-relation queries the response was YES. [2024-06-28 01:23:38,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21065 conditions, 3478 events. 1809/3478 cut-off events. For 52293/52318 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 24714 event pairs, 351 based on Foata normal form. 27/3369 useless extension candidates. Maximal degree in co-relation 20948. Up to 2462 conditions per place. [2024-06-28 01:23:38,150 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 251 selfloop transitions, 109 changer transitions 0/368 dead transitions. [2024-06-28 01:23:38,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 368 transitions, 5554 flow [2024-06-28 01:23:38,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:23:38,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:23:38,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-06-28 01:23:38,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4861111111111111 [2024-06-28 01:23:38,152 INFO L175 Difference]: Start difference. First operand has 236 places, 309 transitions, 4348 flow. Second operand 10 states and 175 transitions. [2024-06-28 01:23:38,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 368 transitions, 5554 flow [2024-06-28 01:23:38,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 368 transitions, 5425 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-28 01:23:38,400 INFO L231 Difference]: Finished difference. Result has 242 places, 315 transitions, 4555 flow [2024-06-28 01:23:38,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4227, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4555, PETRI_PLACES=242, PETRI_TRANSITIONS=315} [2024-06-28 01:23:38,400 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 202 predicate places. [2024-06-28 01:23:38,401 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 315 transitions, 4555 flow [2024-06-28 01:23:38,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:38,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:38,401 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:38,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 01:23:38,401 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:38,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:38,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1960489240, now seen corresponding path program 4 times [2024-06-28 01:23:38,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:38,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419286140] [2024-06-28 01:23:38,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:38,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:38,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:39,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:39,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:39,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419286140] [2024-06-28 01:23:39,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419286140] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:39,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:39,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:23:39,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842359778] [2024-06-28 01:23:39,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:39,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:23:39,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:39,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:23:39,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:23:39,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:23:39,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 315 transitions, 4555 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:39,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:39,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:23:39,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:40,062 INFO L124 PetriNetUnfolderBase]: 1855/3420 cut-off events. [2024-06-28 01:23:40,062 INFO L125 PetriNetUnfolderBase]: For 56437/56462 co-relation queries the response was YES. [2024-06-28 01:23:40,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21712 conditions, 3420 events. 1855/3420 cut-off events. For 56437/56462 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 23363 event pairs, 292 based on Foata normal form. 27/3327 useless extension candidates. Maximal degree in co-relation 21593. Up to 1802 conditions per place. [2024-06-28 01:23:40,098 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 207 selfloop transitions, 165 changer transitions 0/380 dead transitions. [2024-06-28 01:23:40,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 380 transitions, 5932 flow [2024-06-28 01:23:40,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:23:40,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:23:40,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 186 transitions. [2024-06-28 01:23:40,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5166666666666667 [2024-06-28 01:23:40,099 INFO L175 Difference]: Start difference. First operand has 242 places, 315 transitions, 4555 flow. Second operand 10 states and 186 transitions. [2024-06-28 01:23:40,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 380 transitions, 5932 flow [2024-06-28 01:23:40,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 380 transitions, 5711 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-28 01:23:40,359 INFO L231 Difference]: Finished difference. Result has 247 places, 326 transitions, 5023 flow [2024-06-28 01:23:40,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4334, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5023, PETRI_PLACES=247, PETRI_TRANSITIONS=326} [2024-06-28 01:23:40,360 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 207 predicate places. [2024-06-28 01:23:40,360 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 326 transitions, 5023 flow [2024-06-28 01:23:40,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:40,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:40,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:40,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 01:23:40,360 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:40,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:40,361 INFO L85 PathProgramCache]: Analyzing trace with hash 554964456, now seen corresponding path program 5 times [2024-06-28 01:23:40,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:40,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233556912] [2024-06-28 01:23:40,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:40,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:40,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:41,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:41,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:41,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233556912] [2024-06-28 01:23:41,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233556912] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:41,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:41,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:23:41,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341638770] [2024-06-28 01:23:41,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:41,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:23:41,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:41,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:23:41,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:23:41,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:23:41,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 326 transitions, 5023 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:41,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:41,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:23:41,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:42,038 INFO L124 PetriNetUnfolderBase]: 1903/3456 cut-off events. [2024-06-28 01:23:42,038 INFO L125 PetriNetUnfolderBase]: For 65196/65221 co-relation queries the response was YES. [2024-06-28 01:23:42,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23092 conditions, 3456 events. 1903/3456 cut-off events. For 65196/65221 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 23448 event pairs, 280 based on Foata normal form. 27/3371 useless extension candidates. Maximal degree in co-relation 22972. Up to 1707 conditions per place. [2024-06-28 01:23:42,072 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 215 selfloop transitions, 166 changer transitions 0/389 dead transitions. [2024-06-28 01:23:42,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 389 transitions, 6421 flow [2024-06-28 01:23:42,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:23:42,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:23:42,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 190 transitions. [2024-06-28 01:23:42,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2024-06-28 01:23:42,074 INFO L175 Difference]: Start difference. First operand has 247 places, 326 transitions, 5023 flow. Second operand 10 states and 190 transitions. [2024-06-28 01:23:42,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 389 transitions, 6421 flow [2024-06-28 01:23:42,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 389 transitions, 6141 flow, removed 114 selfloop flow, removed 3 redundant places. [2024-06-28 01:23:42,433 INFO L231 Difference]: Finished difference. Result has 254 places, 331 transitions, 5237 flow [2024-06-28 01:23:42,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4765, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5237, PETRI_PLACES=254, PETRI_TRANSITIONS=331} [2024-06-28 01:23:42,434 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 214 predicate places. [2024-06-28 01:23:42,434 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 331 transitions, 5237 flow [2024-06-28 01:23:42,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:42,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:42,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:42,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 01:23:42,435 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:42,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:42,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1965851775, now seen corresponding path program 5 times [2024-06-28 01:23:42,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:42,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082089572] [2024-06-28 01:23:42,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:42,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:42,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:43,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:43,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:43,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082089572] [2024-06-28 01:23:43,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082089572] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:43,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:43,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:23:43,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445533472] [2024-06-28 01:23:43,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:43,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:23:43,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:43,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:23:43,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:23:43,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:23:43,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 331 transitions, 5237 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:43,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:43,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:23:43,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:44,153 INFO L124 PetriNetUnfolderBase]: 1919/3694 cut-off events. [2024-06-28 01:23:44,153 INFO L125 PetriNetUnfolderBase]: For 68934/68959 co-relation queries the response was YES. [2024-06-28 01:23:44,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23977 conditions, 3694 events. 1919/3694 cut-off events. For 68934/68959 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 26651 event pairs, 379 based on Foata normal form. 27/3573 useless extension candidates. Maximal degree in co-relation 23855. Up to 2638 conditions per place. [2024-06-28 01:23:44,186 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 279 selfloop transitions, 103 changer transitions 0/390 dead transitions. [2024-06-28 01:23:44,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 390 transitions, 6469 flow [2024-06-28 01:23:44,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:23:44,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:23:44,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 177 transitions. [2024-06-28 01:23:44,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49166666666666664 [2024-06-28 01:23:44,188 INFO L175 Difference]: Start difference. First operand has 254 places, 331 transitions, 5237 flow. Second operand 10 states and 177 transitions. [2024-06-28 01:23:44,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 390 transitions, 6469 flow [2024-06-28 01:23:44,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 390 transitions, 6291 flow, removed 38 selfloop flow, removed 5 redundant places. [2024-06-28 01:23:44,403 INFO L231 Difference]: Finished difference. Result has 259 places, 332 transitions, 5304 flow [2024-06-28 01:23:44,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5059, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5304, PETRI_PLACES=259, PETRI_TRANSITIONS=332} [2024-06-28 01:23:44,404 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 219 predicate places. [2024-06-28 01:23:44,404 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 332 transitions, 5304 flow [2024-06-28 01:23:44,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:44,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:44,404 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:44,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 01:23:44,404 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:44,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:44,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1965999645, now seen corresponding path program 6 times [2024-06-28 01:23:44,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:44,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769961142] [2024-06-28 01:23:44,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:44,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:44,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:45,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:45,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:45,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769961142] [2024-06-28 01:23:45,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769961142] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:45,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:45,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:23:45,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250218583] [2024-06-28 01:23:45,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:45,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:23:45,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:45,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:23:45,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:23:45,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:23:45,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 332 transitions, 5304 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:45,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:45,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:23:45,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:46,225 INFO L124 PetriNetUnfolderBase]: 2065/3856 cut-off events. [2024-06-28 01:23:46,226 INFO L125 PetriNetUnfolderBase]: For 92571/92598 co-relation queries the response was YES. [2024-06-28 01:23:46,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26336 conditions, 3856 events. 2065/3856 cut-off events. For 92571/92598 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 27184 event pairs, 372 based on Foata normal form. 29/3750 useless extension candidates. Maximal degree in co-relation 26213. Up to 1873 conditions per place. [2024-06-28 01:23:46,265 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 263 selfloop transitions, 132 changer transitions 0/403 dead transitions. [2024-06-28 01:23:46,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 403 transitions, 6830 flow [2024-06-28 01:23:46,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:23:46,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:23:46,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 192 transitions. [2024-06-28 01:23:46,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-06-28 01:23:46,266 INFO L175 Difference]: Start difference. First operand has 259 places, 332 transitions, 5304 flow. Second operand 10 states and 192 transitions. [2024-06-28 01:23:46,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 403 transitions, 6830 flow [2024-06-28 01:23:46,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 403 transitions, 6509 flow, removed 29 selfloop flow, removed 9 redundant places. [2024-06-28 01:23:46,619 INFO L231 Difference]: Finished difference. Result has 262 places, 338 transitions, 5456 flow [2024-06-28 01:23:46,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5017, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5456, PETRI_PLACES=262, PETRI_TRANSITIONS=338} [2024-06-28 01:23:46,620 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 222 predicate places. [2024-06-28 01:23:46,620 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 338 transitions, 5456 flow [2024-06-28 01:23:46,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:46,625 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:46,625 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:46,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 01:23:46,626 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:46,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:46,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1965995925, now seen corresponding path program 7 times [2024-06-28 01:23:46,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:46,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310282316] [2024-06-28 01:23:46,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:46,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:46,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:47,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:47,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:47,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310282316] [2024-06-28 01:23:47,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310282316] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:47,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:47,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:23:47,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429233967] [2024-06-28 01:23:47,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:47,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:23:47,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:47,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:23:47,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:23:47,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:23:47,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 338 transitions, 5456 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:47,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:47,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:23:47,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:48,474 INFO L124 PetriNetUnfolderBase]: 2267/4211 cut-off events. [2024-06-28 01:23:48,488 INFO L125 PetriNetUnfolderBase]: For 118407/118429 co-relation queries the response was YES. [2024-06-28 01:23:48,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28788 conditions, 4211 events. 2267/4211 cut-off events. For 118407/118429 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 30193 event pairs, 578 based on Foata normal form. 36/4095 useless extension candidates. Maximal degree in co-relation 28663. Up to 2592 conditions per place. [2024-06-28 01:23:48,536 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 300 selfloop transitions, 116 changer transitions 0/424 dead transitions. [2024-06-28 01:23:48,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 424 transitions, 7064 flow [2024-06-28 01:23:48,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:23:48,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:23:48,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 218 transitions. [2024-06-28 01:23:48,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5046296296296297 [2024-06-28 01:23:48,537 INFO L175 Difference]: Start difference. First operand has 262 places, 338 transitions, 5456 flow. Second operand 12 states and 218 transitions. [2024-06-28 01:23:48,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 424 transitions, 7064 flow [2024-06-28 01:23:49,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 424 transitions, 6881 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-28 01:23:49,099 INFO L231 Difference]: Finished difference. Result has 271 places, 352 transitions, 5796 flow [2024-06-28 01:23:49,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5281, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5796, PETRI_PLACES=271, PETRI_TRANSITIONS=352} [2024-06-28 01:23:49,100 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 231 predicate places. [2024-06-28 01:23:49,100 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 352 transitions, 5796 flow [2024-06-28 01:23:49,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:49,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:49,100 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:49,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 01:23:49,101 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:49,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:49,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1965851620, now seen corresponding path program 6 times [2024-06-28 01:23:49,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:49,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906346304] [2024-06-28 01:23:49,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:49,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:49,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:49,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:49,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:49,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906346304] [2024-06-28 01:23:49,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906346304] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:49,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:49,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:23:49,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440501531] [2024-06-28 01:23:49,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:49,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:23:49,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:49,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:23:49,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:23:49,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:23:49,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 352 transitions, 5796 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:49,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:49,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:23:49,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:50,946 INFO L124 PetriNetUnfolderBase]: 2269/4149 cut-off events. [2024-06-28 01:23:50,946 INFO L125 PetriNetUnfolderBase]: For 97995/98021 co-relation queries the response was YES. [2024-06-28 01:23:50,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29073 conditions, 4149 events. 2269/4149 cut-off events. For 97995/98021 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 29277 event pairs, 357 based on Foata normal form. 28/4050 useless extension candidates. Maximal degree in co-relation 28944. Up to 2492 conditions per place. [2024-06-28 01:23:50,992 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 242 selfloop transitions, 164 changer transitions 0/414 dead transitions. [2024-06-28 01:23:50,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 414 transitions, 7062 flow [2024-06-28 01:23:50,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:23:50,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:23:50,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 190 transitions. [2024-06-28 01:23:50,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2024-06-28 01:23:50,994 INFO L175 Difference]: Start difference. First operand has 271 places, 352 transitions, 5796 flow. Second operand 10 states and 190 transitions. [2024-06-28 01:23:50,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 414 transitions, 7062 flow [2024-06-28 01:23:51,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 414 transitions, 6858 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-06-28 01:23:51,580 INFO L231 Difference]: Finished difference. Result has 275 places, 354 transitions, 5979 flow [2024-06-28 01:23:51,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5620, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5979, PETRI_PLACES=275, PETRI_TRANSITIONS=354} [2024-06-28 01:23:51,581 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 235 predicate places. [2024-06-28 01:23:51,581 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 354 transitions, 5979 flow [2024-06-28 01:23:51,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:51,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:51,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:51,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 01:23:51,582 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:51,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:51,582 INFO L85 PathProgramCache]: Analyzing trace with hash -37569049, now seen corresponding path program 8 times [2024-06-28 01:23:51,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:51,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375821277] [2024-06-28 01:23:51,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:51,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:51,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:52,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:52,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:52,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375821277] [2024-06-28 01:23:52,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375821277] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:52,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:52,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:23:52,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664140199] [2024-06-28 01:23:52,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:52,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:23:52,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:52,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:23:52,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:23:52,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:23:52,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 354 transitions, 5979 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:52,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:52,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:23:52,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:53,464 INFO L124 PetriNetUnfolderBase]: 2369/4327 cut-off events. [2024-06-28 01:23:53,464 INFO L125 PetriNetUnfolderBase]: For 124029/124051 co-relation queries the response was YES. [2024-06-28 01:23:53,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30493 conditions, 4327 events. 2369/4327 cut-off events. For 124029/124051 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 30972 event pairs, 703 based on Foata normal form. 36/4222 useless extension candidates. Maximal degree in co-relation 30363. Up to 3304 conditions per place. [2024-06-28 01:23:53,509 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 349 selfloop transitions, 55 changer transitions 0/412 dead transitions. [2024-06-28 01:23:53,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 412 transitions, 7257 flow [2024-06-28 01:23:53,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:23:53,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:23:53,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 180 transitions. [2024-06-28 01:23:53,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:23:53,511 INFO L175 Difference]: Start difference. First operand has 275 places, 354 transitions, 5979 flow. Second operand 10 states and 180 transitions. [2024-06-28 01:23:53,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 412 transitions, 7257 flow [2024-06-28 01:23:54,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 412 transitions, 6842 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-28 01:23:54,051 INFO L231 Difference]: Finished difference. Result has 277 places, 355 transitions, 5719 flow [2024-06-28 01:23:54,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5564, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5719, PETRI_PLACES=277, PETRI_TRANSITIONS=355} [2024-06-28 01:23:54,052 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 237 predicate places. [2024-06-28 01:23:54,052 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 355 transitions, 5719 flow [2024-06-28 01:23:54,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:54,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:54,053 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:54,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 01:23:54,053 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:54,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:54,053 INFO L85 PathProgramCache]: Analyzing trace with hash 2141397284, now seen corresponding path program 7 times [2024-06-28 01:23:54,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:54,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430873865] [2024-06-28 01:23:54,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:54,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:54,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:54,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:54,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:54,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430873865] [2024-06-28 01:23:54,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430873865] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:54,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:54,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:23:54,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673666599] [2024-06-28 01:23:54,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:54,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:23:54,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:54,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:23:54,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:23:54,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:23:54,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 355 transitions, 5719 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:54,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:54,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:23:54,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:56,070 INFO L124 PetriNetUnfolderBase]: 2409/4365 cut-off events. [2024-06-28 01:23:56,070 INFO L125 PetriNetUnfolderBase]: For 107838/107860 co-relation queries the response was YES. [2024-06-28 01:23:56,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30437 conditions, 4365 events. 2409/4365 cut-off events. For 107838/107860 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 31039 event pairs, 713 based on Foata normal form. 24/4253 useless extension candidates. Maximal degree in co-relation 30306. Up to 3422 conditions per place. [2024-06-28 01:23:56,119 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 332 selfloop transitions, 78 changer transitions 0/418 dead transitions. [2024-06-28 01:23:56,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 418 transitions, 7129 flow [2024-06-28 01:23:56,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:23:56,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:23:56,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 179 transitions. [2024-06-28 01:23:56,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49722222222222223 [2024-06-28 01:23:56,120 INFO L175 Difference]: Start difference. First operand has 277 places, 355 transitions, 5719 flow. Second operand 10 states and 179 transitions. [2024-06-28 01:23:56,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 418 transitions, 7129 flow [2024-06-28 01:23:56,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 418 transitions, 7010 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-28 01:23:56,651 INFO L231 Difference]: Finished difference. Result has 281 places, 365 transitions, 6052 flow [2024-06-28 01:23:56,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5600, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6052, PETRI_PLACES=281, PETRI_TRANSITIONS=365} [2024-06-28 01:23:56,651 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 241 predicate places. [2024-06-28 01:23:56,651 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 365 transitions, 6052 flow [2024-06-28 01:23:56,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:56,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:56,652 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:56,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 01:23:56,652 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:56,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:56,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1678883658, now seen corresponding path program 2 times [2024-06-28 01:23:56,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:56,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344621550] [2024-06-28 01:23:56,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:56,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:56,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:57,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:57,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:57,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344621550] [2024-06-28 01:23:57,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344621550] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:57,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:57,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:23:57,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012428855] [2024-06-28 01:23:57,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:57,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:23:57,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:57,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:23:57,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:23:57,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:23:57,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 365 transitions, 6052 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:57,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:57,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:23:57,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:58,571 INFO L124 PetriNetUnfolderBase]: 2425/4340 cut-off events. [2024-06-28 01:23:58,571 INFO L125 PetriNetUnfolderBase]: For 112302/112325 co-relation queries the response was YES. [2024-06-28 01:23:58,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30990 conditions, 4340 events. 2425/4340 cut-off events. For 112302/112325 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 30646 event pairs, 814 based on Foata normal form. 25/4229 useless extension candidates. Maximal degree in co-relation 30856. Up to 3903 conditions per place. [2024-06-28 01:23:58,621 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 369 selfloop transitions, 22 changer transitions 0/399 dead transitions. [2024-06-28 01:23:58,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 399 transitions, 7063 flow [2024-06-28 01:23:58,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:23:58,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:23:58,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 148 transitions. [2024-06-28 01:23:58,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4567901234567901 [2024-06-28 01:23:58,622 INFO L175 Difference]: Start difference. First operand has 281 places, 365 transitions, 6052 flow. Second operand 9 states and 148 transitions. [2024-06-28 01:23:58,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 399 transitions, 7063 flow [2024-06-28 01:23:59,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 399 transitions, 6795 flow, removed 94 selfloop flow, removed 4 redundant places. [2024-06-28 01:23:59,311 INFO L231 Difference]: Finished difference. Result has 287 places, 370 transitions, 5918 flow [2024-06-28 01:23:59,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5786, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5918, PETRI_PLACES=287, PETRI_TRANSITIONS=370} [2024-06-28 01:23:59,311 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 247 predicate places. [2024-06-28 01:23:59,312 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 370 transitions, 5918 flow [2024-06-28 01:23:59,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:59,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:59,312 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:59,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 01:23:59,312 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:59,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:59,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1949959226, now seen corresponding path program 3 times [2024-06-28 01:23:59,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:59,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458482610] [2024-06-28 01:23:59,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:59,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:59,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:00,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:24:00,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:00,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458482610] [2024-06-28 01:24:00,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458482610] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:00,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:00,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:24:00,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728334539] [2024-06-28 01:24:00,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:00,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:24:00,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:00,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:24:00,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:24:00,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:24:00,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 370 transitions, 5918 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:00,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:00,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:24:00,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:01,202 INFO L124 PetriNetUnfolderBase]: 2441/4396 cut-off events. [2024-06-28 01:24:01,202 INFO L125 PetriNetUnfolderBase]: For 111248/111270 co-relation queries the response was YES. [2024-06-28 01:24:01,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30915 conditions, 4396 events. 2441/4396 cut-off events. For 111248/111270 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 31314 event pairs, 793 based on Foata normal form. 24/4278 useless extension candidates. Maximal degree in co-relation 30778. Up to 3869 conditions per place. [2024-06-28 01:24:01,250 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 368 selfloop transitions, 34 changer transitions 0/410 dead transitions. [2024-06-28 01:24:01,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 410 transitions, 7011 flow [2024-06-28 01:24:01,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:24:01,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:24:01,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-28 01:24:01,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-28 01:24:01,251 INFO L175 Difference]: Start difference. First operand has 287 places, 370 transitions, 5918 flow. Second operand 9 states and 153 transitions. [2024-06-28 01:24:01,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 410 transitions, 7011 flow [2024-06-28 01:24:01,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 410 transitions, 6960 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-28 01:24:01,837 INFO L231 Difference]: Finished difference. Result has 292 places, 374 transitions, 6016 flow [2024-06-28 01:24:01,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5867, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6016, PETRI_PLACES=292, PETRI_TRANSITIONS=374} [2024-06-28 01:24:01,837 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 252 predicate places. [2024-06-28 01:24:01,837 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 374 transitions, 6016 flow [2024-06-28 01:24:01,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:01,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:01,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:24:01,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 01:24:01,838 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:01,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:01,838 INFO L85 PathProgramCache]: Analyzing trace with hash 2146759509, now seen corresponding path program 9 times [2024-06-28 01:24:01,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:01,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202835790] [2024-06-28 01:24:01,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:01,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:01,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:02,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:24:02,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:02,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202835790] [2024-06-28 01:24:02,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202835790] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:02,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:02,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:24:02,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582419333] [2024-06-28 01:24:02,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:02,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:24:02,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:02,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:24:02,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:24:02,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:24:02,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 374 transitions, 6016 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:02,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:02,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:24:02,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:03,601 INFO L124 PetriNetUnfolderBase]: 2541/4637 cut-off events. [2024-06-28 01:24:03,601 INFO L125 PetriNetUnfolderBase]: For 139351/139373 co-relation queries the response was YES. [2024-06-28 01:24:03,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32290 conditions, 4637 events. 2541/4637 cut-off events. For 139351/139373 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 33722 event pairs, 781 based on Foata normal form. 36/4524 useless extension candidates. Maximal degree in co-relation 32151. Up to 3608 conditions per place. [2024-06-28 01:24:03,654 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 375 selfloop transitions, 54 changer transitions 0/437 dead transitions. [2024-06-28 01:24:03,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 437 transitions, 7415 flow [2024-06-28 01:24:03,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:24:03,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:24:03,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 181 transitions. [2024-06-28 01:24:03,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5027777777777778 [2024-06-28 01:24:03,655 INFO L175 Difference]: Start difference. First operand has 292 places, 374 transitions, 6016 flow. Second operand 10 states and 181 transitions. [2024-06-28 01:24:03,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 437 transitions, 7415 flow [2024-06-28 01:24:04,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 437 transitions, 7330 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-28 01:24:04,230 INFO L231 Difference]: Finished difference. Result has 296 places, 375 transitions, 6088 flow [2024-06-28 01:24:04,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5931, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6088, PETRI_PLACES=296, PETRI_TRANSITIONS=375} [2024-06-28 01:24:04,230 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 256 predicate places. [2024-06-28 01:24:04,230 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 375 transitions, 6088 flow [2024-06-28 01:24:04,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:04,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:04,231 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:24:04,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 01:24:04,231 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:04,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:04,231 INFO L85 PathProgramCache]: Analyzing trace with hash 2146759664, now seen corresponding path program 8 times [2024-06-28 01:24:04,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:04,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295823734] [2024-06-28 01:24:04,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:04,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:04,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:05,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:24:05,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:05,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295823734] [2024-06-28 01:24:05,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295823734] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:05,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:05,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:24:05,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084158521] [2024-06-28 01:24:05,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:05,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:24:05,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:05,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:24:05,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:24:05,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:24:05,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 375 transitions, 6088 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:05,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:05,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:24:05,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:06,305 INFO L124 PetriNetUnfolderBase]: 2590/4725 cut-off events. [2024-06-28 01:24:06,306 INFO L125 PetriNetUnfolderBase]: For 124675/124697 co-relation queries the response was YES. [2024-06-28 01:24:06,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33128 conditions, 4725 events. 2590/4725 cut-off events. For 124675/124697 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 34445 event pairs, 782 based on Foata normal form. 24/4594 useless extension candidates. Maximal degree in co-relation 32988. Up to 3721 conditions per place. [2024-06-28 01:24:06,363 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 355 selfloop transitions, 80 changer transitions 0/443 dead transitions. [2024-06-28 01:24:06,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 443 transitions, 7599 flow [2024-06-28 01:24:06,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:24:06,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:24:06,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 180 transitions. [2024-06-28 01:24:06,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:24:06,364 INFO L175 Difference]: Start difference. First operand has 296 places, 375 transitions, 6088 flow. Second operand 10 states and 180 transitions. [2024-06-28 01:24:06,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 443 transitions, 7599 flow [2024-06-28 01:24:07,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 443 transitions, 7478 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-28 01:24:07,025 INFO L231 Difference]: Finished difference. Result has 300 places, 385 transitions, 6418 flow [2024-06-28 01:24:07,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5967, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6418, PETRI_PLACES=300, PETRI_TRANSITIONS=385} [2024-06-28 01:24:07,027 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 260 predicate places. [2024-06-28 01:24:07,027 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 385 transitions, 6418 flow [2024-06-28 01:24:07,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:07,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:07,027 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:24:07,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 01:24:07,027 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:07,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:07,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1955681082, now seen corresponding path program 9 times [2024-06-28 01:24:07,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:07,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003469805] [2024-06-28 01:24:07,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:07,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:07,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:07,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:24:07,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:07,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003469805] [2024-06-28 01:24:07,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003469805] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:07,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:07,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:24:07,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069786506] [2024-06-28 01:24:07,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:07,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:24:07,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:07,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:24:07,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:24:07,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:24:07,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 385 transitions, 6418 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:07,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:07,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:24:07,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:09,090 INFO L124 PetriNetUnfolderBase]: 2615/4803 cut-off events. [2024-06-28 01:24:09,091 INFO L125 PetriNetUnfolderBase]: For 130771/130791 co-relation queries the response was YES. [2024-06-28 01:24:09,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34064 conditions, 4803 events. 2615/4803 cut-off events. For 130771/130791 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 35318 event pairs, 757 based on Foata normal form. 22/4667 useless extension candidates. Maximal degree in co-relation 33921. Up to 3528 conditions per place. [2024-06-28 01:24:09,146 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 332 selfloop transitions, 101 changer transitions 0/441 dead transitions. [2024-06-28 01:24:09,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 441 transitions, 7977 flow [2024-06-28 01:24:09,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:24:09,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:24:09,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 179 transitions. [2024-06-28 01:24:09,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49722222222222223 [2024-06-28 01:24:09,147 INFO L175 Difference]: Start difference. First operand has 300 places, 385 transitions, 6418 flow. Second operand 10 states and 179 transitions. [2024-06-28 01:24:09,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 441 transitions, 7977 flow [2024-06-28 01:24:09,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 441 transitions, 7791 flow, removed 84 selfloop flow, removed 3 redundant places. [2024-06-28 01:24:09,846 INFO L231 Difference]: Finished difference. Result has 308 places, 391 transitions, 6670 flow [2024-06-28 01:24:09,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6232, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6670, PETRI_PLACES=308, PETRI_TRANSITIONS=391} [2024-06-28 01:24:09,847 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 268 predicate places. [2024-06-28 01:24:09,847 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 391 transitions, 6670 flow [2024-06-28 01:24:09,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:09,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:09,847 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:24:09,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 01:24:09,847 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:09,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:09,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1955681237, now seen corresponding path program 10 times [2024-06-28 01:24:09,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:09,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428688920] [2024-06-28 01:24:09,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:09,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:09,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:10,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:24:10,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:10,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428688920] [2024-06-28 01:24:10,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428688920] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:10,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:10,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:24:10,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120980080] [2024-06-28 01:24:10,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:10,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:24:10,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:10,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:24:10,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:24:10,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:24:10,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 391 transitions, 6670 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:10,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:10,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:24:10,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:11,827 INFO L124 PetriNetUnfolderBase]: 2631/4841 cut-off events. [2024-06-28 01:24:11,827 INFO L125 PetriNetUnfolderBase]: For 136460/136480 co-relation queries the response was YES. [2024-06-28 01:24:11,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34727 conditions, 4841 events. 2631/4841 cut-off events. For 136460/136480 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 35681 event pairs, 791 based on Foata normal form. 22/4704 useless extension candidates. Maximal degree in co-relation 34581. Up to 3608 conditions per place. [2024-06-28 01:24:11,883 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 376 selfloop transitions, 70 changer transitions 0/454 dead transitions. [2024-06-28 01:24:11,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 454 transitions, 8085 flow [2024-06-28 01:24:11,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:24:11,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:24:11,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 199 transitions. [2024-06-28 01:24:11,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5025252525252525 [2024-06-28 01:24:11,884 INFO L175 Difference]: Start difference. First operand has 308 places, 391 transitions, 6670 flow. Second operand 11 states and 199 transitions. [2024-06-28 01:24:11,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 454 transitions, 8085 flow [2024-06-28 01:24:12,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 454 transitions, 7816 flow, removed 84 selfloop flow, removed 5 redundant places. [2024-06-28 01:24:12,575 INFO L231 Difference]: Finished difference. Result has 314 places, 392 transitions, 6608 flow [2024-06-28 01:24:12,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6411, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6608, PETRI_PLACES=314, PETRI_TRANSITIONS=392} [2024-06-28 01:24:12,575 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 274 predicate places. [2024-06-28 01:24:12,576 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 392 transitions, 6608 flow [2024-06-28 01:24:12,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:12,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:12,576 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:24:12,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 01:24:12,576 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:12,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:12,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1955684957, now seen corresponding path program 11 times [2024-06-28 01:24:12,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:12,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93146708] [2024-06-28 01:24:12,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:12,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:12,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:13,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:24:13,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:13,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93146708] [2024-06-28 01:24:13,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93146708] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:13,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:13,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:24:13,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414692080] [2024-06-28 01:24:13,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:13,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:24:13,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:13,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:24:13,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:24:13,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:24:13,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 392 transitions, 6608 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:13,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:13,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:24:13,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:14,587 INFO L124 PetriNetUnfolderBase]: 2751/5047 cut-off events. [2024-06-28 01:24:14,587 INFO L125 PetriNetUnfolderBase]: For 160637/160659 co-relation queries the response was YES. [2024-06-28 01:24:14,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36466 conditions, 5047 events. 2751/5047 cut-off events. For 160637/160659 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 37565 event pairs, 785 based on Foata normal form. 24/4916 useless extension candidates. Maximal degree in co-relation 36318. Up to 3341 conditions per place. [2024-06-28 01:24:14,650 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 369 selfloop transitions, 70 changer transitions 0/447 dead transitions. [2024-06-28 01:24:14,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 447 transitions, 8099 flow [2024-06-28 01:24:14,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:24:14,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:24:14,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 181 transitions. [2024-06-28 01:24:14,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5027777777777778 [2024-06-28 01:24:14,652 INFO L175 Difference]: Start difference. First operand has 314 places, 392 transitions, 6608 flow. Second operand 10 states and 181 transitions. [2024-06-28 01:24:14,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 447 transitions, 8099 flow [2024-06-28 01:24:15,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 447 transitions, 7934 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-28 01:24:15,534 INFO L231 Difference]: Finished difference. Result has 315 places, 394 transitions, 6687 flow [2024-06-28 01:24:15,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6449, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6687, PETRI_PLACES=315, PETRI_TRANSITIONS=394} [2024-06-28 01:24:15,534 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 275 predicate places. [2024-06-28 01:24:15,534 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 394 transitions, 6687 flow [2024-06-28 01:24:15,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:15,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:15,535 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:24:15,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 01:24:15,535 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:15,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:15,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1973180298, now seen corresponding path program 4 times [2024-06-28 01:24:15,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:15,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452737252] [2024-06-28 01:24:15,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:15,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:15,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:16,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:24:16,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:16,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452737252] [2024-06-28 01:24:16,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452737252] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:16,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:16,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:24:16,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989061311] [2024-06-28 01:24:16,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:16,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:24:16,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:16,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:24:16,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:24:16,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:24:16,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 394 transitions, 6687 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:16,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:16,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:24:16,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:17,708 INFO L124 PetriNetUnfolderBase]: 2773/4950 cut-off events. [2024-06-28 01:24:17,708 INFO L125 PetriNetUnfolderBase]: For 158072/158095 co-relation queries the response was YES. [2024-06-28 01:24:17,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36475 conditions, 4950 events. 2773/4950 cut-off events. For 158072/158095 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 35943 event pairs, 940 based on Foata normal form. 25/4838 useless extension candidates. Maximal degree in co-relation 36326. Up to 4509 conditions per place. [2024-06-28 01:24:17,773 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 394 selfloop transitions, 24 changer transitions 0/426 dead transitions. [2024-06-28 01:24:17,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 426 transitions, 7710 flow [2024-06-28 01:24:17,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:24:17,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:24:17,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-06-28 01:24:17,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46296296296296297 [2024-06-28 01:24:17,774 INFO L175 Difference]: Start difference. First operand has 315 places, 394 transitions, 6687 flow. Second operand 9 states and 150 transitions. [2024-06-28 01:24:17,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 426 transitions, 7710 flow [2024-06-28 01:24:18,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 426 transitions, 7557 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-28 01:24:18,721 INFO L231 Difference]: Finished difference. Result has 319 places, 397 transitions, 6654 flow [2024-06-28 01:24:18,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6534, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6654, PETRI_PLACES=319, PETRI_TRANSITIONS=397} [2024-06-28 01:24:18,722 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 279 predicate places. [2024-06-28 01:24:18,722 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 397 transitions, 6654 flow [2024-06-28 01:24:18,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:18,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:18,722 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:24:18,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 01:24:18,723 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:18,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:18,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1973535558, now seen corresponding path program 5 times [2024-06-28 01:24:18,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:18,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106699380] [2024-06-28 01:24:18,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:18,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:18,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:19,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:24:19,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:19,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106699380] [2024-06-28 01:24:19,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106699380] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:19,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:19,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:24:19,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131840417] [2024-06-28 01:24:19,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:19,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:24:19,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:19,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:24:19,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:24:19,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:24:19,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 397 transitions, 6654 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:19,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:19,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:24:19,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:20,773 INFO L124 PetriNetUnfolderBase]: 2778/4965 cut-off events. [2024-06-28 01:24:20,773 INFO L125 PetriNetUnfolderBase]: For 152411/152434 co-relation queries the response was YES. [2024-06-28 01:24:20,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36083 conditions, 4965 events. 2778/4965 cut-off events. For 152411/152434 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 35967 event pairs, 936 based on Foata normal form. 25/4851 useless extension candidates. Maximal degree in co-relation 35931. Up to 4528 conditions per place. [2024-06-28 01:24:20,836 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 398 selfloop transitions, 22 changer transitions 0/428 dead transitions. [2024-06-28 01:24:20,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 428 transitions, 7656 flow [2024-06-28 01:24:20,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:24:20,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:24:20,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 149 transitions. [2024-06-28 01:24:20,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45987654320987653 [2024-06-28 01:24:20,837 INFO L175 Difference]: Start difference. First operand has 319 places, 397 transitions, 6654 flow. Second operand 9 states and 149 transitions. [2024-06-28 01:24:20,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 428 transitions, 7656 flow [2024-06-28 01:24:21,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 428 transitions, 7583 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-28 01:24:21,880 INFO L231 Difference]: Finished difference. Result has 323 places, 400 transitions, 6685 flow [2024-06-28 01:24:21,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6581, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6685, PETRI_PLACES=323, PETRI_TRANSITIONS=400} [2024-06-28 01:24:21,881 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 283 predicate places. [2024-06-28 01:24:21,881 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 400 transitions, 6685 flow [2024-06-28 01:24:21,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:21,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:21,882 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:24:21,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 01:24:21,882 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:21,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:21,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1678668332, now seen corresponding path program 10 times [2024-06-28 01:24:21,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:21,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945131597] [2024-06-28 01:24:21,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:21,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:21,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:22,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:24:22,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:22,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945131597] [2024-06-28 01:24:22,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945131597] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:22,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:22,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:24:22,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700678727] [2024-06-28 01:24:22,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:22,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:24:22,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:22,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:24:22,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:24:22,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:24:22,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 400 transitions, 6685 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:22,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:22,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:24:22,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:24,249 INFO L124 PetriNetUnfolderBase]: 2836/5137 cut-off events. [2024-06-28 01:24:24,250 INFO L125 PetriNetUnfolderBase]: For 158452/158475 co-relation queries the response was YES. [2024-06-28 01:24:24,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37288 conditions, 5137 events. 2836/5137 cut-off events. For 158452/158475 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 37958 event pairs, 947 based on Foata normal form. 25/5002 useless extension candidates. Maximal degree in co-relation 37134. Up to 4453 conditions per place. [2024-06-28 01:24:24,314 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 408 selfloop transitions, 37 changer transitions 0/453 dead transitions. [2024-06-28 01:24:24,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 453 transitions, 8003 flow [2024-06-28 01:24:24,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:24:24,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:24:24,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 187 transitions. [2024-06-28 01:24:24,315 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-28 01:24:24,315 INFO L175 Difference]: Start difference. First operand has 323 places, 400 transitions, 6685 flow. Second operand 11 states and 187 transitions. [2024-06-28 01:24:24,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 453 transitions, 8003 flow [2024-06-28 01:24:25,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 453 transitions, 7933 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-28 01:24:25,184 INFO L231 Difference]: Finished difference. Result has 329 places, 408 transitions, 6881 flow [2024-06-28 01:24:25,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6615, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6881, PETRI_PLACES=329, PETRI_TRANSITIONS=408} [2024-06-28 01:24:25,185 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 289 predicate places. [2024-06-28 01:24:25,185 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 408 transitions, 6881 flow [2024-06-28 01:24:25,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:25,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:25,185 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:24:25,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 01:24:25,185 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:25,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:25,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1963081862, now seen corresponding path program 11 times [2024-06-28 01:24:25,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:25,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554001647] [2024-06-28 01:24:25,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:25,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:25,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:26,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:24:26,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:26,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554001647] [2024-06-28 01:24:26,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554001647] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:26,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:26,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:24:26,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836614411] [2024-06-28 01:24:26,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:26,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:24:26,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:26,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:24:26,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:24:26,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:24:26,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 408 transitions, 6881 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:26,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:26,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:24:26,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:27,499 INFO L124 PetriNetUnfolderBase]: 2838/5063 cut-off events. [2024-06-28 01:24:27,499 INFO L125 PetriNetUnfolderBase]: For 157011/157034 co-relation queries the response was YES. [2024-06-28 01:24:27,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37243 conditions, 5063 events. 2838/5063 cut-off events. For 157011/157034 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 36871 event pairs, 970 based on Foata normal form. 25/4950 useless extension candidates. Maximal degree in co-relation 37087. Up to 4604 conditions per place. [2024-06-28 01:24:27,556 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 414 selfloop transitions, 21 changer transitions 0/443 dead transitions. [2024-06-28 01:24:27,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 443 transitions, 7979 flow [2024-06-28 01:24:27,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:24:27,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:24:27,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-06-28 01:24:27,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46111111111111114 [2024-06-28 01:24:27,557 INFO L175 Difference]: Start difference. First operand has 329 places, 408 transitions, 6881 flow. Second operand 10 states and 166 transitions. [2024-06-28 01:24:27,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 443 transitions, 7979 flow [2024-06-28 01:24:28,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 443 transitions, 7820 flow, removed 46 selfloop flow, removed 8 redundant places. [2024-06-28 01:24:28,523 INFO L231 Difference]: Finished difference. Result has 331 places, 410 transitions, 6837 flow [2024-06-28 01:24:28,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6738, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6837, PETRI_PLACES=331, PETRI_TRANSITIONS=410} [2024-06-28 01:24:28,523 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 291 predicate places. [2024-06-28 01:24:28,524 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 410 transitions, 6837 flow [2024-06-28 01:24:28,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:28,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:28,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:24:28,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 01:24:28,524 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:28,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:28,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1678668177, now seen corresponding path program 12 times [2024-06-28 01:24:28,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:28,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434850705] [2024-06-28 01:24:28,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:28,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:28,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:29,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:24:29,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:29,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434850705] [2024-06-28 01:24:29,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434850705] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:29,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:29,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:24:29,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003356055] [2024-06-28 01:24:29,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:29,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:24:29,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:29,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:24:29,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:24:29,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:24:29,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 410 transitions, 6837 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:29,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:29,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:24:29,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:30,855 INFO L124 PetriNetUnfolderBase]: 2819/5092 cut-off events. [2024-06-28 01:24:30,856 INFO L125 PetriNetUnfolderBase]: For 152306/152329 co-relation queries the response was YES. [2024-06-28 01:24:30,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35850 conditions, 5092 events. 2819/5092 cut-off events. For 152306/152329 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 37519 event pairs, 919 based on Foata normal form. 37/4975 useless extension candidates. Maximal degree in co-relation 35693. Up to 4230 conditions per place. [2024-06-28 01:24:30,909 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 412 selfloop transitions, 34 changer transitions 0/454 dead transitions. [2024-06-28 01:24:30,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 454 transitions, 8042 flow [2024-06-28 01:24:30,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:24:30,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:24:30,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 174 transitions. [2024-06-28 01:24:30,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48333333333333334 [2024-06-28 01:24:30,911 INFO L175 Difference]: Start difference. First operand has 331 places, 410 transitions, 6837 flow. Second operand 10 states and 174 transitions. [2024-06-28 01:24:30,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 454 transitions, 8042 flow [2024-06-28 01:24:31,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 454 transitions, 7959 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-28 01:24:31,583 INFO L231 Difference]: Finished difference. Result has 333 places, 410 transitions, 6831 flow [2024-06-28 01:24:31,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6754, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6831, PETRI_PLACES=333, PETRI_TRANSITIONS=410} [2024-06-28 01:24:31,583 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 293 predicate places. [2024-06-28 01:24:31,583 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 410 transitions, 6831 flow [2024-06-28 01:24:31,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:31,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:31,584 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:24:31,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 01:24:31,584 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:31,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:31,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1997468655, now seen corresponding path program 13 times [2024-06-28 01:24:31,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:31,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752803607] [2024-06-28 01:24:31,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:31,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:31,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:32,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:24:32,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:32,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752803607] [2024-06-28 01:24:32,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752803607] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:32,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:32,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:24:32,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015914038] [2024-06-28 01:24:32,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:32,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:24:32,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:32,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:24:32,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:24:32,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:24:32,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 410 transitions, 6831 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:32,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:32,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:24:32,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:34,121 INFO L124 PetriNetUnfolderBase]: 3026/5748 cut-off events. [2024-06-28 01:24:34,121 INFO L125 PetriNetUnfolderBase]: For 157463/157488 co-relation queries the response was YES. [2024-06-28 01:24:34,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38492 conditions, 5748 events. 3026/5748 cut-off events. For 157463/157488 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 45050 event pairs, 838 based on Foata normal form. 39/5594 useless extension candidates. Maximal degree in co-relation 38334. Up to 3862 conditions per place. [2024-06-28 01:24:34,185 INFO L140 encePairwiseOnDemand]: 22/36 looper letters, 356 selfloop transitions, 131 changer transitions 0/495 dead transitions. [2024-06-28 01:24:34,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 495 transitions, 8635 flow [2024-06-28 01:24:34,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:24:34,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:24:34,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 229 transitions. [2024-06-28 01:24:34,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5300925925925926 [2024-06-28 01:24:34,186 INFO L175 Difference]: Start difference. First operand has 333 places, 410 transitions, 6831 flow. Second operand 12 states and 229 transitions. [2024-06-28 01:24:34,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 495 transitions, 8635 flow [2024-06-28 01:24:34,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 495 transitions, 8549 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-28 01:24:34,949 INFO L231 Difference]: Finished difference. Result has 338 places, 424 transitions, 7334 flow [2024-06-28 01:24:34,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6745, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7334, PETRI_PLACES=338, PETRI_TRANSITIONS=424} [2024-06-28 01:24:34,949 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 298 predicate places. [2024-06-28 01:24:34,949 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 424 transitions, 7334 flow [2024-06-28 01:24:34,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:34,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:34,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:24:34,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 01:24:34,950 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:34,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:34,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1607318811, now seen corresponding path program 1 times [2024-06-28 01:24:34,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:34,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875979362] [2024-06-28 01:24:34,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:34,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:34,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:35,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:24:35,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:35,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875979362] [2024-06-28 01:24:35,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875979362] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:35,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:35,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:24:35,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824921106] [2024-06-28 01:24:35,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:35,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:24:35,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:35,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:24:35,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:24:35,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:24:35,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 424 transitions, 7334 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:35,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:35,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:24:35,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:37,676 INFO L124 PetriNetUnfolderBase]: 3177/6122 cut-off events. [2024-06-28 01:24:37,676 INFO L125 PetriNetUnfolderBase]: For 177372/177403 co-relation queries the response was YES. [2024-06-28 01:24:37,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41408 conditions, 6122 events. 3177/6122 cut-off events. For 177372/177403 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 49026 event pairs, 879 based on Foata normal form. 39/5933 useless extension candidates. Maximal degree in co-relation 41247. Up to 4234 conditions per place. [2024-06-28 01:24:37,765 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 439 selfloop transitions, 56 changer transitions 0/503 dead transitions. [2024-06-28 01:24:37,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 503 transitions, 9056 flow [2024-06-28 01:24:37,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:24:37,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:24:37,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 220 transitions. [2024-06-28 01:24:37,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5092592592592593 [2024-06-28 01:24:37,767 INFO L175 Difference]: Start difference. First operand has 338 places, 424 transitions, 7334 flow. Second operand 12 states and 220 transitions. [2024-06-28 01:24:37,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 503 transitions, 9056 flow [2024-06-28 01:24:38,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 503 transitions, 8821 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-28 01:24:38,678 INFO L231 Difference]: Finished difference. Result has 344 places, 430 transitions, 7302 flow [2024-06-28 01:24:38,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7107, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7302, PETRI_PLACES=344, PETRI_TRANSITIONS=430} [2024-06-28 01:24:38,678 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 304 predicate places. [2024-06-28 01:24:38,678 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 430 transitions, 7302 flow [2024-06-28 01:24:38,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:38,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:38,679 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:24:38,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 01:24:38,679 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:38,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:38,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1151405529, now seen corresponding path program 2 times [2024-06-28 01:24:38,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:38,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209452490] [2024-06-28 01:24:38,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:38,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:38,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:39,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:24:39,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:39,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209452490] [2024-06-28 01:24:39,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209452490] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:39,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:39,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:24:39,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080726304] [2024-06-28 01:24:39,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:39,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:24:39,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:39,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:24:39,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:24:39,680 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:24:39,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 430 transitions, 7302 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:39,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:39,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:24:39,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:41,281 INFO L124 PetriNetUnfolderBase]: 3261/6257 cut-off events. [2024-06-28 01:24:41,282 INFO L125 PetriNetUnfolderBase]: For 187881/187908 co-relation queries the response was YES. [2024-06-28 01:24:41,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42147 conditions, 6257 events. 3261/6257 cut-off events. For 187881/187908 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 50412 event pairs, 978 based on Foata normal form. 37/6077 useless extension candidates. Maximal degree in co-relation 41984. Up to 4859 conditions per place. [2024-06-28 01:24:41,359 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 407 selfloop transitions, 81 changer transitions 0/496 dead transitions. [2024-06-28 01:24:41,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 496 transitions, 8768 flow [2024-06-28 01:24:41,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:24:41,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:24:41,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 214 transitions. [2024-06-28 01:24:41,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49537037037037035 [2024-06-28 01:24:41,361 INFO L175 Difference]: Start difference. First operand has 344 places, 430 transitions, 7302 flow. Second operand 12 states and 214 transitions. [2024-06-28 01:24:41,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 496 transitions, 8768 flow [2024-06-28 01:24:42,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 496 transitions, 8689 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-28 01:24:42,390 INFO L231 Difference]: Finished difference. Result has 347 places, 430 transitions, 7391 flow [2024-06-28 01:24:42,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7223, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7391, PETRI_PLACES=347, PETRI_TRANSITIONS=430} [2024-06-28 01:24:42,391 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 307 predicate places. [2024-06-28 01:24:42,391 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 430 transitions, 7391 flow [2024-06-28 01:24:42,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:42,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:42,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:24:42,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 01:24:42,391 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:42,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:42,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1578688813, now seen corresponding path program 3 times [2024-06-28 01:24:42,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:42,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837343752] [2024-06-28 01:24:42,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:42,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:42,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:43,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:24:43,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:43,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837343752] [2024-06-28 01:24:43,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837343752] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:43,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:43,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:24:43,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619194541] [2024-06-28 01:24:43,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:43,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:24:43,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:43,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:24:43,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:24:43,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:24:43,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 430 transitions, 7391 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:43,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:43,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:24:43,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:45,074 INFO L124 PetriNetUnfolderBase]: 3236/6236 cut-off events. [2024-06-28 01:24:45,074 INFO L125 PetriNetUnfolderBase]: For 161938/161965 co-relation queries the response was YES. [2024-06-28 01:24:45,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41418 conditions, 6236 events. 3236/6236 cut-off events. For 161938/161965 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 50343 event pairs, 930 based on Foata normal form. 35/6045 useless extension candidates. Maximal degree in co-relation 41254. Up to 4700 conditions per place. [2024-06-28 01:24:45,161 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 413 selfloop transitions, 81 changer transitions 0/502 dead transitions. [2024-06-28 01:24:45,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 502 transitions, 8980 flow [2024-06-28 01:24:45,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:24:45,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:24:45,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 218 transitions. [2024-06-28 01:24:45,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5046296296296297 [2024-06-28 01:24:45,163 INFO L175 Difference]: Start difference. First operand has 347 places, 430 transitions, 7391 flow. Second operand 12 states and 218 transitions. [2024-06-28 01:24:45,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 502 transitions, 8980 flow [2024-06-28 01:24:46,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 502 transitions, 8822 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-28 01:24:46,090 INFO L231 Difference]: Finished difference. Result has 350 places, 432 transitions, 7484 flow [2024-06-28 01:24:46,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7233, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7484, PETRI_PLACES=350, PETRI_TRANSITIONS=432} [2024-06-28 01:24:46,090 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 310 predicate places. [2024-06-28 01:24:46,090 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 432 transitions, 7484 flow [2024-06-28 01:24:46,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:46,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:46,091 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:24:46,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 01:24:46,091 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:46,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:46,091 INFO L85 PathProgramCache]: Analyzing trace with hash -124309417, now seen corresponding path program 4 times [2024-06-28 01:24:46,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:46,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014265062] [2024-06-28 01:24:46,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:46,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:46,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:47,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:24:47,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:47,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014265062] [2024-06-28 01:24:47,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014265062] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:47,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:47,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:24:47,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793427987] [2024-06-28 01:24:47,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:47,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:24:47,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:47,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:24:47,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:24:47,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:24:47,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 432 transitions, 7484 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:47,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:47,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:24:47,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:48,791 INFO L124 PetriNetUnfolderBase]: 3397/6483 cut-off events. [2024-06-28 01:24:48,792 INFO L125 PetriNetUnfolderBase]: For 195792/195821 co-relation queries the response was YES. [2024-06-28 01:24:48,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43772 conditions, 6483 events. 3397/6483 cut-off events. For 195792/195821 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 52462 event pairs, 982 based on Foata normal form. 37/6315 useless extension candidates. Maximal degree in co-relation 43606. Up to 4497 conditions per place. [2024-06-28 01:24:48,880 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 440 selfloop transitions, 56 changer transitions 0/504 dead transitions. [2024-06-28 01:24:48,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 504 transitions, 9168 flow [2024-06-28 01:24:48,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:24:48,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:24:48,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 218 transitions. [2024-06-28 01:24:48,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5046296296296297 [2024-06-28 01:24:48,882 INFO L175 Difference]: Start difference. First operand has 350 places, 432 transitions, 7484 flow. Second operand 12 states and 218 transitions. [2024-06-28 01:24:48,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 504 transitions, 9168 flow [2024-06-28 01:24:49,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 504 transitions, 8992 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-28 01:24:49,989 INFO L231 Difference]: Finished difference. Result has 353 places, 432 transitions, 7423 flow [2024-06-28 01:24:49,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7308, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7423, PETRI_PLACES=353, PETRI_TRANSITIONS=432} [2024-06-28 01:24:49,990 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 313 predicate places. [2024-06-28 01:24:49,990 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 432 transitions, 7423 flow [2024-06-28 01:24:49,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:49,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:49,990 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:24:49,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 01:24:49,990 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:49,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:49,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1727241983, now seen corresponding path program 5 times [2024-06-28 01:24:49,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:49,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005188282] [2024-06-28 01:24:49,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:49,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:50,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:50,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:24:50,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:50,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005188282] [2024-06-28 01:24:50,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005188282] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:50,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:50,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:24:50,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396131275] [2024-06-28 01:24:50,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:50,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:24:50,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:50,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:24:50,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:24:51,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:24:51,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 432 transitions, 7423 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:51,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:51,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:24:51,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:52,915 INFO L124 PetriNetUnfolderBase]: 3481/6674 cut-off events. [2024-06-28 01:24:52,916 INFO L125 PetriNetUnfolderBase]: For 207397/207423 co-relation queries the response was YES. [2024-06-28 01:24:52,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44746 conditions, 6674 events. 3481/6674 cut-off events. For 207397/207423 co-relation queries the response was YES. Maximal size of possible extension queue 458. Compared 54619 event pairs, 1150 based on Foata normal form. 36/6493 useless extension candidates. Maximal degree in co-relation 44579. Up to 5423 conditions per place. [2024-06-28 01:24:53,006 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 416 selfloop transitions, 66 changer transitions 0/490 dead transitions. [2024-06-28 01:24:53,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 490 transitions, 8829 flow [2024-06-28 01:24:53,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:24:53,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:24:53,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 203 transitions. [2024-06-28 01:24:53,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4699074074074074 [2024-06-28 01:24:53,007 INFO L175 Difference]: Start difference. First operand has 353 places, 432 transitions, 7423 flow. Second operand 12 states and 203 transitions. [2024-06-28 01:24:53,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 490 transitions, 8829 flow [2024-06-28 01:24:54,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 490 transitions, 8723 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-28 01:24:54,368 INFO L231 Difference]: Finished difference. Result has 356 places, 432 transitions, 7455 flow [2024-06-28 01:24:54,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7317, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7455, PETRI_PLACES=356, PETRI_TRANSITIONS=432} [2024-06-28 01:24:54,369 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 316 predicate places. [2024-06-28 01:24:54,369 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 432 transitions, 7455 flow [2024-06-28 01:24:54,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:54,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:54,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:24:54,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 01:24:54,369 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:54,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:54,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1731710633, now seen corresponding path program 6 times [2024-06-28 01:24:54,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:54,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838608000] [2024-06-28 01:24:54,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:54,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:54,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:55,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:24:55,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:55,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838608000] [2024-06-28 01:24:55,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838608000] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:55,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:55,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:24:55,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840975676] [2024-06-28 01:24:55,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:55,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:24:55,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:55,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:24:55,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:24:55,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:24:55,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 432 transitions, 7455 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:55,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:55,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:24:55,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:57,437 INFO L124 PetriNetUnfolderBase]: 3440/6583 cut-off events. [2024-06-28 01:24:57,438 INFO L125 PetriNetUnfolderBase]: For 182606/182632 co-relation queries the response was YES. [2024-06-28 01:24:57,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43569 conditions, 6583 events. 3440/6583 cut-off events. For 182606/182632 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 53654 event pairs, 1077 based on Foata normal form. 36/6407 useless extension candidates. Maximal degree in co-relation 43401. Up to 5173 conditions per place. [2024-06-28 01:24:57,518 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 433 selfloop transitions, 59 changer transitions 0/500 dead transitions. [2024-06-28 01:24:57,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 500 transitions, 8963 flow [2024-06-28 01:24:57,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 01:24:57,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 01:24:57,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 223 transitions. [2024-06-28 01:24:57,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47649572649572647 [2024-06-28 01:24:57,519 INFO L175 Difference]: Start difference. First operand has 356 places, 432 transitions, 7455 flow. Second operand 13 states and 223 transitions. [2024-06-28 01:24:57,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 500 transitions, 8963 flow [2024-06-28 01:24:58,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 500 transitions, 8828 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 01:24:58,464 INFO L231 Difference]: Finished difference. Result has 360 places, 434 transitions, 7497 flow [2024-06-28 01:24:58,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7320, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=7497, PETRI_PLACES=360, PETRI_TRANSITIONS=434} [2024-06-28 01:24:58,465 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 320 predicate places. [2024-06-28 01:24:58,465 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 434 transitions, 7497 flow [2024-06-28 01:24:58,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:58,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:58,465 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:24:58,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 01:24:58,466 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:58,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:58,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1727246633, now seen corresponding path program 7 times [2024-06-28 01:24:58,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:58,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652207566] [2024-06-28 01:24:58,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:58,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:58,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:59,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:24:59,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:59,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652207566] [2024-06-28 01:24:59,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652207566] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:59,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:59,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:24:59,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200282808] [2024-06-28 01:24:59,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:59,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:24:59,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:59,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:24:59,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:24:59,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:24:59,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 434 transitions, 7497 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:59,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:59,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:24:59,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:01,351 INFO L124 PetriNetUnfolderBase]: 3508/6727 cut-off events. [2024-06-28 01:25:01,352 INFO L125 PetriNetUnfolderBase]: For 182097/182123 co-relation queries the response was YES. [2024-06-28 01:25:01,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44541 conditions, 6727 events. 3508/6727 cut-off events. For 182097/182123 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 55113 event pairs, 1114 based on Foata normal form. 34/6539 useless extension candidates. Maximal degree in co-relation 44372. Up to 5207 conditions per place. [2024-06-28 01:25:01,434 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 437 selfloop transitions, 50 changer transitions 0/495 dead transitions. [2024-06-28 01:25:01,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 495 transitions, 8962 flow [2024-06-28 01:25:01,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:25:01,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:25:01,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 195 transitions. [2024-06-28 01:25:01,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49242424242424243 [2024-06-28 01:25:01,435 INFO L175 Difference]: Start difference. First operand has 360 places, 434 transitions, 7497 flow. Second operand 11 states and 195 transitions. [2024-06-28 01:25:01,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 495 transitions, 8962 flow [2024-06-28 01:25:02,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 495 transitions, 8867 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-28 01:25:02,378 INFO L231 Difference]: Finished difference. Result has 365 places, 435 transitions, 7543 flow [2024-06-28 01:25:02,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7402, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=384, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7543, PETRI_PLACES=365, PETRI_TRANSITIONS=435} [2024-06-28 01:25:02,378 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 325 predicate places. [2024-06-28 01:25:02,378 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 435 transitions, 7543 flow [2024-06-28 01:25:02,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:02,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:02,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:25:02,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 01:25:02,379 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:25:02,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:02,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1731715283, now seen corresponding path program 8 times [2024-06-28 01:25:02,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:02,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600300953] [2024-06-28 01:25:02,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:02,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:02,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:03,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:25:03,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:03,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600300953] [2024-06-28 01:25:03,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600300953] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:03,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:03,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:25:03,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809306709] [2024-06-28 01:25:03,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:03,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:25:03,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:03,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:25:03,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:25:03,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:25:03,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 435 transitions, 7543 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:03,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:03,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:25:03,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:05,389 INFO L124 PetriNetUnfolderBase]: 3580/6973 cut-off events. [2024-06-28 01:25:05,389 INFO L125 PetriNetUnfolderBase]: For 188851/188877 co-relation queries the response was YES. [2024-06-28 01:25:05,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45526 conditions, 6973 events. 3580/6973 cut-off events. For 188851/188877 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 58045 event pairs, 1164 based on Foata normal form. 34/6754 useless extension candidates. Maximal degree in co-relation 45355. Up to 5403 conditions per place. [2024-06-28 01:25:05,495 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 421 selfloop transitions, 70 changer transitions 0/499 dead transitions. [2024-06-28 01:25:05,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 499 transitions, 9061 flow [2024-06-28 01:25:05,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:25:05,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:25:05,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 210 transitions. [2024-06-28 01:25:05,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4861111111111111 [2024-06-28 01:25:05,497 INFO L175 Difference]: Start difference. First operand has 365 places, 435 transitions, 7543 flow. Second operand 12 states and 210 transitions. [2024-06-28 01:25:05,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 499 transitions, 9061 flow [2024-06-28 01:25:06,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 499 transitions, 8982 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-28 01:25:06,821 INFO L231 Difference]: Finished difference. Result has 371 places, 436 transitions, 7668 flow [2024-06-28 01:25:06,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7464, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7668, PETRI_PLACES=371, PETRI_TRANSITIONS=436} [2024-06-28 01:25:06,822 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 331 predicate places. [2024-06-28 01:25:06,822 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 436 transitions, 7668 flow [2024-06-28 01:25:06,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:06,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:06,823 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:25:06,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 01:25:06,823 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:25:06,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:06,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1693385337, now seen corresponding path program 9 times [2024-06-28 01:25:06,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:06,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679214621] [2024-06-28 01:25:06,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:06,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:06,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:07,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:25:07,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:07,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679214621] [2024-06-28 01:25:07,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679214621] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:07,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:07,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:25:07,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163460380] [2024-06-28 01:25:07,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:07,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:25:07,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:07,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:25:07,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:25:07,780 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:25:07,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 436 transitions, 7668 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:07,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:07,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:25:07,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:09,608 INFO L124 PetriNetUnfolderBase]: 3807/7100 cut-off events. [2024-06-28 01:25:09,609 INFO L125 PetriNetUnfolderBase]: For 228173/228200 co-relation queries the response was YES. [2024-06-28 01:25:09,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48439 conditions, 7100 events. 3807/7100 cut-off events. For 228173/228200 co-relation queries the response was YES. Maximal size of possible extension queue 514. Compared 57380 event pairs, 911 based on Foata normal form. 35/6958 useless extension candidates. Maximal degree in co-relation 48266. Up to 4488 conditions per place. [2024-06-28 01:25:09,711 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 319 selfloop transitions, 185 changer transitions 0/512 dead transitions. [2024-06-28 01:25:09,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 512 transitions, 9392 flow [2024-06-28 01:25:09,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:25:09,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:25:09,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 229 transitions. [2024-06-28 01:25:09,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5300925925925926 [2024-06-28 01:25:09,713 INFO L175 Difference]: Start difference. First operand has 371 places, 436 transitions, 7668 flow. Second operand 12 states and 229 transitions. [2024-06-28 01:25:09,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 512 transitions, 9392 flow [2024-06-28 01:25:11,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 512 transitions, 9223 flow, removed 15 selfloop flow, removed 10 redundant places. [2024-06-28 01:25:11,862 INFO L231 Difference]: Finished difference. Result has 373 places, 436 transitions, 7875 flow [2024-06-28 01:25:11,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7499, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=185, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7875, PETRI_PLACES=373, PETRI_TRANSITIONS=436} [2024-06-28 01:25:11,862 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 333 predicate places. [2024-06-28 01:25:11,862 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 436 transitions, 7875 flow [2024-06-28 01:25:11,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:11,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:11,863 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:25:11,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 01:25:11,863 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:25:11,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:11,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1693389987, now seen corresponding path program 10 times [2024-06-28 01:25:11,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:11,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538160616] [2024-06-28 01:25:11,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:11,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:11,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:12,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:25:12,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:12,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538160616] [2024-06-28 01:25:12,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538160616] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:12,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:12,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:25:12,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360847464] [2024-06-28 01:25:12,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:12,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:25:12,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:12,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:25:12,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:25:12,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:25:12,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 436 transitions, 7875 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:12,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:12,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:25:12,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:14,848 INFO L124 PetriNetUnfolderBase]: 3810/7245 cut-off events. [2024-06-28 01:25:14,849 INFO L125 PetriNetUnfolderBase]: For 211466/211493 co-relation queries the response was YES. [2024-06-28 01:25:14,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48499 conditions, 7245 events. 3810/7245 cut-off events. For 211466/211493 co-relation queries the response was YES. Maximal size of possible extension queue 511. Compared 59415 event pairs, 988 based on Foata normal form. 37/7061 useless extension candidates. Maximal degree in co-relation 48326. Up to 5116 conditions per place. [2024-06-28 01:25:14,934 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 316 selfloop transitions, 181 changer transitions 0/505 dead transitions. [2024-06-28 01:25:14,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 505 transitions, 9381 flow [2024-06-28 01:25:14,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:25:14,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:25:14,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 209 transitions. [2024-06-28 01:25:14,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2024-06-28 01:25:14,935 INFO L175 Difference]: Start difference. First operand has 373 places, 436 transitions, 7875 flow. Second operand 11 states and 209 transitions. [2024-06-28 01:25:14,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 505 transitions, 9381 flow [2024-06-28 01:25:16,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 505 transitions, 9026 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-28 01:25:16,512 INFO L231 Difference]: Finished difference. Result has 375 places, 436 transitions, 7886 flow [2024-06-28 01:25:16,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7520, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=181, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7886, PETRI_PLACES=375, PETRI_TRANSITIONS=436} [2024-06-28 01:25:16,513 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 335 predicate places. [2024-06-28 01:25:16,513 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 436 transitions, 7886 flow [2024-06-28 01:25:16,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:16,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:16,513 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:25:16,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 01:25:16,513 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:25:16,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:16,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1688801367, now seen corresponding path program 11 times [2024-06-28 01:25:16,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:16,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859042973] [2024-06-28 01:25:16,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:16,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:16,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:17,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:25:17,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:17,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859042973] [2024-06-28 01:25:17,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859042973] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:17,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:17,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:25:17,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935522103] [2024-06-28 01:25:17,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:17,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:25:17,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:17,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:25:17,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:25:17,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:25:17,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 436 transitions, 7886 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:17,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:17,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:25:17,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:20,136 INFO L124 PetriNetUnfolderBase]: 4016/7711 cut-off events. [2024-06-28 01:25:20,136 INFO L125 PetriNetUnfolderBase]: For 260201/260230 co-relation queries the response was YES. [2024-06-28 01:25:20,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51910 conditions, 7711 events. 4016/7711 cut-off events. For 260201/260230 co-relation queries the response was YES. Maximal size of possible extension queue 549. Compared 64845 event pairs, 1201 based on Foata normal form. 37/7519 useless extension candidates. Maximal degree in co-relation 51736. Up to 4219 conditions per place. [2024-06-28 01:25:20,240 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 354 selfloop transitions, 152 changer transitions 0/514 dead transitions. [2024-06-28 01:25:20,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 514 transitions, 9657 flow [2024-06-28 01:25:20,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:25:20,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:25:20,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 209 transitions. [2024-06-28 01:25:20,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2024-06-28 01:25:20,243 INFO L175 Difference]: Start difference. First operand has 375 places, 436 transitions, 7886 flow. Second operand 11 states and 209 transitions. [2024-06-28 01:25:20,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 514 transitions, 9657 flow [2024-06-28 01:25:22,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 514 transitions, 9295 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-28 01:25:22,403 INFO L231 Difference]: Finished difference. Result has 378 places, 442 transitions, 7934 flow [2024-06-28 01:25:22,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7526, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7934, PETRI_PLACES=378, PETRI_TRANSITIONS=442} [2024-06-28 01:25:22,404 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 338 predicate places. [2024-06-28 01:25:22,404 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 442 transitions, 7934 flow [2024-06-28 01:25:22,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:22,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:22,404 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:25:22,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 01:25:22,405 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:25:22,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:22,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1688921337, now seen corresponding path program 12 times [2024-06-28 01:25:22,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:22,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206619883] [2024-06-28 01:25:22,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:22,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:22,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:23,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:25:23,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:23,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206619883] [2024-06-28 01:25:23,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206619883] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:23,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:23,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:25:23,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235459729] [2024-06-28 01:25:23,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:23,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:25:23,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:23,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:25:23,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:25:23,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:25:23,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 442 transitions, 7934 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:23,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:23,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:25:23,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:25,797 INFO L124 PetriNetUnfolderBase]: 4084/7923 cut-off events. [2024-06-28 01:25:25,797 INFO L125 PetriNetUnfolderBase]: For 273961/273988 co-relation queries the response was YES. [2024-06-28 01:25:25,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53057 conditions, 7923 events. 4084/7923 cut-off events. For 273961/273988 co-relation queries the response was YES. Maximal size of possible extension queue 562. Compared 67536 event pairs, 1335 based on Foata normal form. 37/7703 useless extension candidates. Maximal degree in co-relation 52881. Up to 5399 conditions per place. [2024-06-28 01:25:25,921 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 349 selfloop transitions, 167 changer transitions 0/524 dead transitions. [2024-06-28 01:25:25,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 524 transitions, 9602 flow [2024-06-28 01:25:25,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 01:25:25,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 01:25:25,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 241 transitions. [2024-06-28 01:25:25,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5149572649572649 [2024-06-28 01:25:25,922 INFO L175 Difference]: Start difference. First operand has 378 places, 442 transitions, 7934 flow. Second operand 13 states and 241 transitions. [2024-06-28 01:25:25,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 524 transitions, 9602 flow [2024-06-28 01:25:27,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 524 transitions, 9352 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-28 01:25:27,783 INFO L231 Difference]: Finished difference. Result has 384 places, 444 transitions, 8077 flow [2024-06-28 01:25:27,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7684, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=8077, PETRI_PLACES=384, PETRI_TRANSITIONS=444} [2024-06-28 01:25:27,784 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 344 predicate places. [2024-06-28 01:25:27,784 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 444 transitions, 8077 flow [2024-06-28 01:25:27,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:27,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:27,784 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:25:27,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 01:25:27,785 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:25:27,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:27,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1688916687, now seen corresponding path program 13 times [2024-06-28 01:25:27,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:27,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859770034] [2024-06-28 01:25:27,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:27,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:27,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:28,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:25:28,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:28,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859770034] [2024-06-28 01:25:28,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859770034] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:28,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:28,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:25:28,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049978237] [2024-06-28 01:25:28,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:28,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:25:28,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:28,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:25:28,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:25:29,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:25:29,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 444 transitions, 8077 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:29,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:29,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:25:29,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:31,228 INFO L124 PetriNetUnfolderBase]: 4160/7807 cut-off events. [2024-06-28 01:25:31,229 INFO L125 PetriNetUnfolderBase]: For 226224/226247 co-relation queries the response was YES. [2024-06-28 01:25:31,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52356 conditions, 7807 events. 4160/7807 cut-off events. For 226224/226247 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 64640 event pairs, 1566 based on Foata normal form. 31/7634 useless extension candidates. Maximal degree in co-relation 52178. Up to 5260 conditions per place. [2024-06-28 01:25:31,354 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 389 selfloop transitions, 134 changer transitions 0/531 dead transitions. [2024-06-28 01:25:31,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 531 transitions, 9859 flow [2024-06-28 01:25:31,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 01:25:31,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 01:25:31,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 236 transitions. [2024-06-28 01:25:31,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5042735042735043 [2024-06-28 01:25:31,356 INFO L175 Difference]: Start difference. First operand has 384 places, 444 transitions, 8077 flow. Second operand 13 states and 236 transitions. [2024-06-28 01:25:31,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 531 transitions, 9859 flow [2024-06-28 01:25:33,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 531 transitions, 9507 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-28 01:25:33,064 INFO L231 Difference]: Finished difference. Result has 391 places, 450 transitions, 8130 flow [2024-06-28 01:25:33,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7744, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=8130, PETRI_PLACES=391, PETRI_TRANSITIONS=450} [2024-06-28 01:25:33,065 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 351 predicate places. [2024-06-28 01:25:33,065 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 450 transitions, 8130 flow [2024-06-28 01:25:33,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:33,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:33,066 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:25:33,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 01:25:33,066 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:25:33,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:33,066 INFO L85 PathProgramCache]: Analyzing trace with hash -638956177, now seen corresponding path program 1 times [2024-06-28 01:25:33,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:33,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469686443] [2024-06-28 01:25:33,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:33,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:33,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:34,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:25:34,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:34,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469686443] [2024-06-28 01:25:34,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469686443] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:34,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:34,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:25:34,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987476945] [2024-06-28 01:25:34,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:34,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:25:34,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:34,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:25:34,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:25:34,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:25:34,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 450 transitions, 8130 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:34,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:34,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:25:34,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:36,233 INFO L124 PetriNetUnfolderBase]: 4270/8134 cut-off events. [2024-06-28 01:25:36,234 INFO L125 PetriNetUnfolderBase]: For 212726/212753 co-relation queries the response was YES. [2024-06-28 01:25:36,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53744 conditions, 8134 events. 4270/8134 cut-off events. For 212726/212753 co-relation queries the response was YES. Maximal size of possible extension queue 574. Compared 68523 event pairs, 1343 based on Foata normal form. 29/7909 useless extension candidates. Maximal degree in co-relation 53563. Up to 6266 conditions per place. [2024-06-28 01:25:36,350 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 361 selfloop transitions, 147 changer transitions 0/516 dead transitions. [2024-06-28 01:25:36,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 516 transitions, 9748 flow [2024-06-28 01:25:36,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:25:36,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:25:36,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 180 transitions. [2024-06-28 01:25:36,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:25:36,351 INFO L175 Difference]: Start difference. First operand has 391 places, 450 transitions, 8130 flow. Second operand 10 states and 180 transitions. [2024-06-28 01:25:36,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 516 transitions, 9748 flow [2024-06-28 01:25:38,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 516 transitions, 9519 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-28 01:25:38,269 INFO L231 Difference]: Finished difference. Result has 395 places, 466 transitions, 8564 flow [2024-06-28 01:25:38,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7910, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=450, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8564, PETRI_PLACES=395, PETRI_TRANSITIONS=466} [2024-06-28 01:25:38,270 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 355 predicate places. [2024-06-28 01:25:38,270 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 466 transitions, 8564 flow [2024-06-28 01:25:38,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:38,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:38,270 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:25:38,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 01:25:38,270 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:25:38,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:38,271 INFO L85 PathProgramCache]: Analyzing trace with hash -638947807, now seen corresponding path program 2 times [2024-06-28 01:25:38,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:38,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242271619] [2024-06-28 01:25:38,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:38,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:38,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:39,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:25:39,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:39,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242271619] [2024-06-28 01:25:39,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242271619] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:39,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:39,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:25:39,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504228870] [2024-06-28 01:25:39,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:39,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:25:39,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:39,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:25:39,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:25:39,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:25:39,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 466 transitions, 8564 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:39,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:39,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:25:39,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:41,579 INFO L124 PetriNetUnfolderBase]: 4150/7866 cut-off events. [2024-06-28 01:25:41,580 INFO L125 PetriNetUnfolderBase]: For 211961/211988 co-relation queries the response was YES. [2024-06-28 01:25:41,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53854 conditions, 7866 events. 4150/7866 cut-off events. For 211961/211988 co-relation queries the response was YES. Maximal size of possible extension queue 555. Compared 65588 event pairs, 1277 based on Foata normal form. 29/7655 useless extension candidates. Maximal degree in co-relation 53669. Up to 5837 conditions per place. [2024-06-28 01:25:41,677 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 363 selfloop transitions, 148 changer transitions 0/519 dead transitions. [2024-06-28 01:25:41,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 519 transitions, 10162 flow [2024-06-28 01:25:41,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:25:41,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:25:41,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 181 transitions. [2024-06-28 01:25:41,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5027777777777778 [2024-06-28 01:25:41,704 INFO L175 Difference]: Start difference. First operand has 395 places, 466 transitions, 8564 flow. Second operand 10 states and 181 transitions. [2024-06-28 01:25:41,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 519 transitions, 10162 flow [2024-06-28 01:25:43,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 519 transitions, 9953 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-06-28 01:25:43,491 INFO L231 Difference]: Finished difference. Result has 401 places, 468 transitions, 8705 flow [2024-06-28 01:25:43,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=8355, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=466, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8705, PETRI_PLACES=401, PETRI_TRANSITIONS=468} [2024-06-28 01:25:43,492 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 361 predicate places. [2024-06-28 01:25:43,492 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 468 transitions, 8705 flow [2024-06-28 01:25:43,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:43,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:43,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:25:43,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 01:25:43,493 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:25:43,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:43,494 INFO L85 PathProgramCache]: Analyzing trace with hash -639193761, now seen corresponding path program 14 times [2024-06-28 01:25:43,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:43,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588073637] [2024-06-28 01:25:43,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:43,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:43,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:44,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:25:44,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:44,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588073637] [2024-06-28 01:25:44,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588073637] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:44,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:44,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:25:44,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925599747] [2024-06-28 01:25:44,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:44,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:25:44,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:44,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:25:44,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:25:44,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:25:44,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 468 transitions, 8705 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:44,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:44,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:25:44,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:46,861 INFO L124 PetriNetUnfolderBase]: 4276/8169 cut-off events. [2024-06-28 01:25:46,861 INFO L125 PetriNetUnfolderBase]: For 247171/247198 co-relation queries the response was YES. [2024-06-28 01:25:46,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55467 conditions, 8169 events. 4276/8169 cut-off events. For 247171/247198 co-relation queries the response was YES. Maximal size of possible extension queue 574. Compared 69125 event pairs, 1298 based on Foata normal form. 37/7949 useless extension candidates. Maximal degree in co-relation 55281. Up to 6041 conditions per place. [2024-06-28 01:25:46,963 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 378 selfloop transitions, 147 changer transitions 0/533 dead transitions. [2024-06-28 01:25:46,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 533 transitions, 10324 flow [2024-06-28 01:25:46,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:25:46,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:25:46,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 200 transitions. [2024-06-28 01:25:46,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5050505050505051 [2024-06-28 01:25:46,964 INFO L175 Difference]: Start difference. First operand has 401 places, 468 transitions, 8705 flow. Second operand 11 states and 200 transitions. [2024-06-28 01:25:46,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 533 transitions, 10324 flow [2024-06-28 01:25:49,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 533 transitions, 10111 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-28 01:25:49,278 INFO L231 Difference]: Finished difference. Result has 407 places, 474 transitions, 8930 flow [2024-06-28 01:25:49,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=8492, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=468, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8930, PETRI_PLACES=407, PETRI_TRANSITIONS=474} [2024-06-28 01:25:49,279 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 367 predicate places. [2024-06-28 01:25:49,279 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 474 transitions, 8930 flow [2024-06-28 01:25:49,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:49,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:49,280 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:25:49,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 01:25:49,280 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:25:49,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:49,280 INFO L85 PathProgramCache]: Analyzing trace with hash -645442927, now seen corresponding path program 3 times [2024-06-28 01:25:49,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:49,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408944908] [2024-06-28 01:25:49,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:49,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:49,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:50,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:25:50,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:50,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408944908] [2024-06-28 01:25:50,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408944908] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:50,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:50,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:25:50,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709447161] [2024-06-28 01:25:50,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:50,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:25:50,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:50,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:25:50,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:25:50,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:25:50,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 474 transitions, 8930 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:50,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:50,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:25:50,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:52,451 INFO L124 PetriNetUnfolderBase]: 4260/8165 cut-off events. [2024-06-28 01:25:52,451 INFO L125 PetriNetUnfolderBase]: For 216254/216281 co-relation queries the response was YES. [2024-06-28 01:25:52,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54846 conditions, 8165 events. 4260/8165 cut-off events. For 216254/216281 co-relation queries the response was YES. Maximal size of possible extension queue 572. Compared 69237 event pairs, 1316 based on Foata normal form. 39/7937 useless extension candidates. Maximal degree in co-relation 54657. Up to 6013 conditions per place. [2024-06-28 01:25:52,565 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 382 selfloop transitions, 146 changer transitions 0/536 dead transitions. [2024-06-28 01:25:52,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 536 transitions, 10470 flow [2024-06-28 01:25:52,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:25:52,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:25:52,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 202 transitions. [2024-06-28 01:25:52,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.51010101010101 [2024-06-28 01:25:52,567 INFO L175 Difference]: Start difference. First operand has 407 places, 474 transitions, 8930 flow. Second operand 11 states and 202 transitions. [2024-06-28 01:25:52,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 536 transitions, 10470 flow [2024-06-28 01:25:54,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 536 transitions, 10172 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-28 01:25:54,244 INFO L231 Difference]: Finished difference. Result has 410 places, 474 transitions, 8936 flow [2024-06-28 01:25:54,244 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=8632, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8936, PETRI_PLACES=410, PETRI_TRANSITIONS=474} [2024-06-28 01:25:54,245 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 370 predicate places. [2024-06-28 01:25:54,245 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 474 transitions, 8936 flow [2024-06-28 01:25:54,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:54,245 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:54,245 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:25:54,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 01:25:54,245 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:25:54,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:54,246 INFO L85 PathProgramCache]: Analyzing trace with hash -645622851, now seen corresponding path program 15 times [2024-06-28 01:25:54,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:54,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910224887] [2024-06-28 01:25:54,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:54,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:54,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:55,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:25:55,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:55,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910224887] [2024-06-28 01:25:55,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910224887] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:55,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:55,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:25:55,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915696355] [2024-06-28 01:25:55,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:55,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:25:55,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:55,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:25:55,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:25:55,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:25:55,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 474 transitions, 8936 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:55,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:55,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:25:55,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:57,399 INFO L124 PetriNetUnfolderBase]: 4328/8075 cut-off events. [2024-06-28 01:25:57,399 INFO L125 PetriNetUnfolderBase]: For 212035/212062 co-relation queries the response was YES. [2024-06-28 01:25:57,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55201 conditions, 8075 events. 4328/8075 cut-off events. For 212035/212062 co-relation queries the response was YES. Maximal size of possible extension queue 583. Compared 66966 event pairs, 1180 based on Foata normal form. 37/7909 useless extension candidates. Maximal degree in co-relation 55011. Up to 5812 conditions per place. [2024-06-28 01:25:57,520 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 320 selfloop transitions, 209 changer transitions 0/537 dead transitions. [2024-06-28 01:25:57,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 537 transitions, 10469 flow [2024-06-28 01:25:57,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:25:57,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:25:57,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 205 transitions. [2024-06-28 01:25:57,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5176767676767676 [2024-06-28 01:25:57,521 INFO L175 Difference]: Start difference. First operand has 410 places, 474 transitions, 8936 flow. Second operand 11 states and 205 transitions. [2024-06-28 01:25:57,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 537 transitions, 10469 flow [2024-06-28 01:25:59,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 537 transitions, 10163 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-28 01:25:59,520 INFO L231 Difference]: Finished difference. Result has 413 places, 474 transitions, 9056 flow [2024-06-28 01:25:59,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=8630, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=209, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9056, PETRI_PLACES=413, PETRI_TRANSITIONS=474} [2024-06-28 01:25:59,521 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 373 predicate places. [2024-06-28 01:25:59,521 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 474 transitions, 9056 flow [2024-06-28 01:25:59,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:59,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:59,521 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:25:59,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 01:25:59,522 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:25:59,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:59,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1859619117, now seen corresponding path program 16 times [2024-06-28 01:25:59,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:59,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358875747] [2024-06-28 01:25:59,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:59,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:59,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:00,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:26:00,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:00,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358875747] [2024-06-28 01:26:00,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358875747] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:00,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:00,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:26:00,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525526538] [2024-06-28 01:26:00,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:00,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:26:00,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:00,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:26:00,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:26:00,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:26:00,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 474 transitions, 9056 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:00,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:00,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:26:00,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:02,853 INFO L124 PetriNetUnfolderBase]: 4468/8307 cut-off events. [2024-06-28 01:26:02,854 INFO L125 PetriNetUnfolderBase]: For 209781/209808 co-relation queries the response was YES. [2024-06-28 01:26:02,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56847 conditions, 8307 events. 4468/8307 cut-off events. For 209781/209808 co-relation queries the response was YES. Maximal size of possible extension queue 610. Compared 69263 event pairs, 1212 based on Foata normal form. 35/8151 useless extension candidates. Maximal degree in co-relation 56657. Up to 5544 conditions per place. [2024-06-28 01:26:02,978 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 324 selfloop transitions, 211 changer transitions 0/543 dead transitions. [2024-06-28 01:26:02,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 543 transitions, 10649 flow [2024-06-28 01:26:02,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:26:02,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:26:02,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 224 transitions. [2024-06-28 01:26:02,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5185185185185185 [2024-06-28 01:26:02,980 INFO L175 Difference]: Start difference. First operand has 413 places, 474 transitions, 9056 flow. Second operand 12 states and 224 transitions. [2024-06-28 01:26:02,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 543 transitions, 10649 flow [2024-06-28 01:26:04,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 543 transitions, 10237 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-28 01:26:04,710 INFO L231 Difference]: Finished difference. Result has 416 places, 474 transitions, 9070 flow [2024-06-28 01:26:04,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=8644, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=211, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9070, PETRI_PLACES=416, PETRI_TRANSITIONS=474} [2024-06-28 01:26:04,711 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 376 predicate places. [2024-06-28 01:26:04,711 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 474 transitions, 9070 flow [2024-06-28 01:26:04,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:04,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:04,711 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:26:04,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-28 01:26:04,711 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:26:04,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:04,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1169107569, now seen corresponding path program 17 times [2024-06-28 01:26:04,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:04,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147348877] [2024-06-28 01:26:04,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:04,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:04,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:05,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:26:05,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:05,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147348877] [2024-06-28 01:26:05,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147348877] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:05,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:05,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:26:05,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566333680] [2024-06-28 01:26:05,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:05,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:26:05,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:05,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:26:05,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:26:05,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:26:05,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 474 transitions, 9070 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:05,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:05,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:26:05,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:08,304 INFO L124 PetriNetUnfolderBase]: 4630/8539 cut-off events. [2024-06-28 01:26:08,304 INFO L125 PetriNetUnfolderBase]: For 254444/254465 co-relation queries the response was YES. [2024-06-28 01:26:08,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59231 conditions, 8539 events. 4630/8539 cut-off events. For 254444/254465 co-relation queries the response was YES. Maximal size of possible extension queue 632. Compared 71167 event pairs, 2006 based on Foata normal form. 29/8393 useless extension candidates. Maximal degree in co-relation 59040. Up to 6762 conditions per place. [2024-06-28 01:26:08,437 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 461 selfloop transitions, 86 changer transitions 0/555 dead transitions. [2024-06-28 01:26:08,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 555 transitions, 10993 flow [2024-06-28 01:26:08,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:26:08,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:26:08,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 219 transitions. [2024-06-28 01:26:08,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5069444444444444 [2024-06-28 01:26:08,439 INFO L175 Difference]: Start difference. First operand has 416 places, 474 transitions, 9070 flow. Second operand 12 states and 219 transitions. [2024-06-28 01:26:08,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 555 transitions, 10993 flow [2024-06-28 01:26:10,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 555 transitions, 10573 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-28 01:26:10,633 INFO L231 Difference]: Finished difference. Result has 421 places, 483 transitions, 8968 flow [2024-06-28 01:26:10,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=8650, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8968, PETRI_PLACES=421, PETRI_TRANSITIONS=483} [2024-06-28 01:26:10,633 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 381 predicate places. [2024-06-28 01:26:10,634 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 483 transitions, 8968 flow [2024-06-28 01:26:10,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:10,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:10,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:26:10,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-28 01:26:10,634 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:26:10,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:10,635 INFO L85 PathProgramCache]: Analyzing trace with hash -496569953, now seen corresponding path program 18 times [2024-06-28 01:26:10,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:10,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926083419] [2024-06-28 01:26:10,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:10,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:10,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:11,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:26:11,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:11,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926083419] [2024-06-28 01:26:11,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926083419] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:11,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:11,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:26:11,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128453827] [2024-06-28 01:26:11,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:11,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:26:11,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:11,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:26:11,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:26:11,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:26:11,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 483 transitions, 8968 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:11,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:11,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:26:11,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:14,438 INFO L124 PetriNetUnfolderBase]: 4529/8348 cut-off events. [2024-06-28 01:26:14,439 INFO L125 PetriNetUnfolderBase]: For 221772/221793 co-relation queries the response was YES. [2024-06-28 01:26:14,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57122 conditions, 8348 events. 4529/8348 cut-off events. For 221772/221793 co-relation queries the response was YES. Maximal size of possible extension queue 616. Compared 69132 event pairs, 1995 based on Foata normal form. 31/8196 useless extension candidates. Maximal degree in co-relation 56927. Up to 6991 conditions per place. [2024-06-28 01:26:14,544 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 466 selfloop transitions, 81 changer transitions 0/555 dead transitions. [2024-06-28 01:26:14,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 555 transitions, 10642 flow [2024-06-28 01:26:14,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 01:26:14,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 01:26:14,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 230 transitions. [2024-06-28 01:26:14,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49145299145299143 [2024-06-28 01:26:14,545 INFO L175 Difference]: Start difference. First operand has 421 places, 483 transitions, 8968 flow. Second operand 13 states and 230 transitions. [2024-06-28 01:26:14,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 555 transitions, 10642 flow [2024-06-28 01:26:16,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 555 transitions, 10521 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-28 01:26:16,470 INFO L231 Difference]: Finished difference. Result has 428 places, 486 transitions, 9088 flow [2024-06-28 01:26:16,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=8847, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=9088, PETRI_PLACES=428, PETRI_TRANSITIONS=486} [2024-06-28 01:26:16,471 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 388 predicate places. [2024-06-28 01:26:16,471 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 486 transitions, 9088 flow [2024-06-28 01:26:16,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:16,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:16,471 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:26:16,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-28 01:26:16,471 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:26:16,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:16,472 INFO L85 PathProgramCache]: Analyzing trace with hash -496689923, now seen corresponding path program 19 times [2024-06-28 01:26:16,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:16,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193858935] [2024-06-28 01:26:16,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:16,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:16,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:17,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:26:17,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:17,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193858935] [2024-06-28 01:26:17,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193858935] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:17,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:17,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:26:17,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781928725] [2024-06-28 01:26:17,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:17,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:26:17,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:17,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:26:17,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:26:17,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:26:17,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 486 transitions, 9088 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:17,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:17,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:26:17,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:20,247 INFO L124 PetriNetUnfolderBase]: 4662/8537 cut-off events. [2024-06-28 01:26:20,247 INFO L125 PetriNetUnfolderBase]: For 259449/259472 co-relation queries the response was YES. [2024-06-28 01:26:20,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59560 conditions, 8537 events. 4662/8537 cut-off events. For 259449/259472 co-relation queries the response was YES. Maximal size of possible extension queue 639. Compared 70800 event pairs, 1928 based on Foata normal form. 31/8415 useless extension candidates. Maximal degree in co-relation 59364. Up to 6127 conditions per place. [2024-06-28 01:26:20,365 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 466 selfloop transitions, 74 changer transitions 0/548 dead transitions. [2024-06-28 01:26:20,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 548 transitions, 10853 flow [2024-06-28 01:26:20,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:26:20,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:26:20,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 199 transitions. [2024-06-28 01:26:20,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5025252525252525 [2024-06-28 01:26:20,366 INFO L175 Difference]: Start difference. First operand has 428 places, 486 transitions, 9088 flow. Second operand 11 states and 199 transitions. [2024-06-28 01:26:20,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 548 transitions, 10853 flow [2024-06-28 01:26:22,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 548 transitions, 10692 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-28 01:26:22,744 INFO L231 Difference]: Finished difference. Result has 430 places, 486 transitions, 9078 flow [2024-06-28 01:26:22,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=8927, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9078, PETRI_PLACES=430, PETRI_TRANSITIONS=486} [2024-06-28 01:26:22,745 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 390 predicate places. [2024-06-28 01:26:22,745 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 486 transitions, 9078 flow [2024-06-28 01:26:22,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:22,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:22,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:26:22,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-28 01:26:22,746 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:26:22,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:22,746 INFO L85 PathProgramCache]: Analyzing trace with hash -325867523, now seen corresponding path program 20 times [2024-06-28 01:26:22,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:22,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079177552] [2024-06-28 01:26:22,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:22,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:22,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:23,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:26:23,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:23,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079177552] [2024-06-28 01:26:23,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079177552] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:23,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:23,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:26:23,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703501963] [2024-06-28 01:26:23,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:23,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:26:23,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:23,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:26:23,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:26:23,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:26:23,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 486 transitions, 9078 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:23,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:23,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:26:23,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:26,225 INFO L124 PetriNetUnfolderBase]: 4746/8738 cut-off events. [2024-06-28 01:26:26,225 INFO L125 PetriNetUnfolderBase]: For 273210/273233 co-relation queries the response was YES. [2024-06-28 01:26:26,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60549 conditions, 8738 events. 4746/8738 cut-off events. For 273210/273233 co-relation queries the response was YES. Maximal size of possible extension queue 652. Compared 73084 event pairs, 2155 based on Foata normal form. 33/8587 useless extension candidates. Maximal degree in co-relation 60352. Up to 7440 conditions per place. [2024-06-28 01:26:26,361 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 453 selfloop transitions, 91 changer transitions 0/552 dead transitions. [2024-06-28 01:26:26,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 552 transitions, 10700 flow [2024-06-28 01:26:26,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:26:26,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:26:26,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 199 transitions. [2024-06-28 01:26:26,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5025252525252525 [2024-06-28 01:26:26,363 INFO L175 Difference]: Start difference. First operand has 430 places, 486 transitions, 9078 flow. Second operand 11 states and 199 transitions. [2024-06-28 01:26:26,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 552 transitions, 10700 flow [2024-06-28 01:26:28,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 552 transitions, 10553 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-28 01:26:28,908 INFO L231 Difference]: Finished difference. Result has 432 places, 486 transitions, 9119 flow [2024-06-28 01:26:28,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=8931, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9119, PETRI_PLACES=432, PETRI_TRANSITIONS=486} [2024-06-28 01:26:28,909 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 392 predicate places. [2024-06-28 01:26:28,909 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 486 transitions, 9119 flow [2024-06-28 01:26:28,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:28,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:28,909 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:26:28,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-28 01:26:28,910 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:26:28,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:28,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1391282241, now seen corresponding path program 21 times [2024-06-28 01:26:28,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:28,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902480923] [2024-06-28 01:26:28,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:28,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:28,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:29,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:26:29,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:29,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902480923] [2024-06-28 01:26:29,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902480923] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:29,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:29,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:26:29,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606562584] [2024-06-28 01:26:29,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:29,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:26:29,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:29,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:26:29,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:26:29,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:26:29,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 486 transitions, 9119 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:29,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:29,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:26:29,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:32,315 INFO L124 PetriNetUnfolderBase]: 4822/8784 cut-off events. [2024-06-28 01:26:32,315 INFO L125 PetriNetUnfolderBase]: For 268310/268334 co-relation queries the response was YES. [2024-06-28 01:26:32,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61197 conditions, 8784 events. 4822/8784 cut-off events. For 268310/268334 co-relation queries the response was YES. Maximal size of possible extension queue 668. Compared 72999 event pairs, 2182 based on Foata normal form. 32/8662 useless extension candidates. Maximal degree in co-relation 60999. Up to 7455 conditions per place. [2024-06-28 01:26:32,441 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 473 selfloop transitions, 67 changer transitions 0/548 dead transitions. [2024-06-28 01:26:32,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 548 transitions, 10928 flow [2024-06-28 01:26:32,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 01:26:32,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 01:26:32,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 232 transitions. [2024-06-28 01:26:32,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4603174603174603 [2024-06-28 01:26:32,443 INFO L175 Difference]: Start difference. First operand has 432 places, 486 transitions, 9119 flow. Second operand 14 states and 232 transitions. [2024-06-28 01:26:32,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 548 transitions, 10928 flow [2024-06-28 01:26:35,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 548 transitions, 10750 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-28 01:26:35,174 INFO L231 Difference]: Finished difference. Result has 438 places, 487 transitions, 9145 flow [2024-06-28 01:26:35,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=8941, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=9145, PETRI_PLACES=438, PETRI_TRANSITIONS=487} [2024-06-28 01:26:35,175 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 398 predicate places. [2024-06-28 01:26:35,175 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 487 transitions, 9145 flow [2024-06-28 01:26:35,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:35,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:35,176 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:26:35,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-28 01:26:35,176 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:26:35,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:35,176 INFO L85 PathProgramCache]: Analyzing trace with hash -325872173, now seen corresponding path program 22 times [2024-06-28 01:26:35,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:35,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704707819] [2024-06-28 01:26:35,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:35,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:35,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:35,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:26:35,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:35,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704707819] [2024-06-28 01:26:35,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704707819] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:35,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:35,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:26:35,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24691853] [2024-06-28 01:26:35,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:35,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:26:35,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:35,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:26:35,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:26:36,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:26:36,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 487 transitions, 9145 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:36,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:36,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:26:36,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:38,794 INFO L124 PetriNetUnfolderBase]: 4930/9094 cut-off events. [2024-06-28 01:26:38,795 INFO L125 PetriNetUnfolderBase]: For 277375/277398 co-relation queries the response was YES. [2024-06-28 01:26:38,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62549 conditions, 9094 events. 4930/9094 cut-off events. For 277375/277398 co-relation queries the response was YES. Maximal size of possible extension queue 693. Compared 76828 event pairs, 2247 based on Foata normal form. 31/8946 useless extension candidates. Maximal degree in co-relation 62349. Up to 7504 conditions per place. [2024-06-28 01:26:38,947 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 458 selfloop transitions, 91 changer transitions 0/557 dead transitions. [2024-06-28 01:26:38,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 557 transitions, 10867 flow [2024-06-28 01:26:38,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:26:38,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:26:38,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 201 transitions. [2024-06-28 01:26:38,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5075757575757576 [2024-06-28 01:26:38,948 INFO L175 Difference]: Start difference. First operand has 438 places, 487 transitions, 9145 flow. Second operand 11 states and 201 transitions. [2024-06-28 01:26:38,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 557 transitions, 10867 flow [2024-06-28 01:26:41,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 557 transitions, 10455 flow, removed 20 selfloop flow, removed 16 redundant places. [2024-06-28 01:26:41,876 INFO L231 Difference]: Finished difference. Result has 434 places, 488 transitions, 8985 flow [2024-06-28 01:26:41,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=8733, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=487, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8985, PETRI_PLACES=434, PETRI_TRANSITIONS=488} [2024-06-28 01:26:41,877 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 394 predicate places. [2024-06-28 01:26:41,877 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 488 transitions, 8985 flow [2024-06-28 01:26:41,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:41,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:41,877 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:26:41,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-28 01:26:41,877 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:26:41,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:41,878 INFO L85 PathProgramCache]: Analyzing trace with hash 499112185, now seen corresponding path program 23 times [2024-06-28 01:26:41,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:41,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76035463] [2024-06-28 01:26:41,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:41,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:41,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:42,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:26:42,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:42,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76035463] [2024-06-28 01:26:42,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76035463] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:42,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:42,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:26:42,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406288615] [2024-06-28 01:26:42,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:42,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:26:42,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:42,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:26:42,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:26:42,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:26:42,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 488 transitions, 8985 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:42,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:42,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:26:42,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:45,414 INFO L124 PetriNetUnfolderBase]: 5004/9162 cut-off events. [2024-06-28 01:26:45,414 INFO L125 PetriNetUnfolderBase]: For 291250/291274 co-relation queries the response was YES. [2024-06-28 01:26:45,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62590 conditions, 9162 events. 5004/9162 cut-off events. For 291250/291274 co-relation queries the response was YES. Maximal size of possible extension queue 704. Compared 77056 event pairs, 2372 based on Foata normal form. 34/9028 useless extension candidates. Maximal degree in co-relation 62392. Up to 8148 conditions per place. [2024-06-28 01:26:45,558 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 471 selfloop transitions, 65 changer transitions 0/544 dead transitions. [2024-06-28 01:26:45,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 544 transitions, 10550 flow [2024-06-28 01:26:45,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:26:45,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:26:45,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 192 transitions. [2024-06-28 01:26:45,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48484848484848486 [2024-06-28 01:26:45,560 INFO L175 Difference]: Start difference. First operand has 434 places, 488 transitions, 8985 flow. Second operand 11 states and 192 transitions. [2024-06-28 01:26:45,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 544 transitions, 10550 flow [2024-06-28 01:26:48,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 544 transitions, 10352 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-28 01:26:48,545 INFO L231 Difference]: Finished difference. Result has 438 places, 491 transitions, 9048 flow [2024-06-28 01:26:48,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=8787, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=488, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9048, PETRI_PLACES=438, PETRI_TRANSITIONS=491} [2024-06-28 01:26:48,546 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 398 predicate places. [2024-06-28 01:26:48,546 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 491 transitions, 9048 flow [2024-06-28 01:26:48,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:48,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:48,546 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:26:48,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-28 01:26:48,546 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:26:48,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:48,547 INFO L85 PathProgramCache]: Analyzing trace with hash -373529985, now seen corresponding path program 4 times [2024-06-28 01:26:48,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:48,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674989546] [2024-06-28 01:26:48,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:48,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:48,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:49,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:26:49,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:49,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674989546] [2024-06-28 01:26:49,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674989546] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:49,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:49,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:26:49,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757944086] [2024-06-28 01:26:49,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:49,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:26:49,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:49,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:26:49,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:26:49,532 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:26:49,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 491 transitions, 9048 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:49,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:49,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:26:49,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:52,031 INFO L124 PetriNetUnfolderBase]: 5020/9187 cut-off events. [2024-06-28 01:26:52,031 INFO L125 PetriNetUnfolderBase]: For 260898/260921 co-relation queries the response was YES. [2024-06-28 01:26:52,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62849 conditions, 9187 events. 5020/9187 cut-off events. For 260898/260921 co-relation queries the response was YES. Maximal size of possible extension queue 708. Compared 77389 event pairs, 2440 based on Foata normal form. 25/9049 useless extension candidates. Maximal degree in co-relation 62649. Up to 8299 conditions per place. [2024-06-28 01:26:52,219 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 475 selfloop transitions, 59 changer transitions 0/542 dead transitions. [2024-06-28 01:26:52,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 542 transitions, 10536 flow [2024-06-28 01:26:52,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:26:52,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:26:52,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 173 transitions. [2024-06-28 01:26:52,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48055555555555557 [2024-06-28 01:26:52,220 INFO L175 Difference]: Start difference. First operand has 438 places, 491 transitions, 9048 flow. Second operand 10 states and 173 transitions. [2024-06-28 01:26:52,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 542 transitions, 10536 flow [2024-06-28 01:26:55,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 542 transitions, 10320 flow, removed 47 selfloop flow, removed 8 redundant places. [2024-06-28 01:26:55,247 INFO L231 Difference]: Finished difference. Result has 441 places, 494 transitions, 9051 flow [2024-06-28 01:26:55,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=8832, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=491, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=433, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9051, PETRI_PLACES=441, PETRI_TRANSITIONS=494} [2024-06-28 01:26:55,248 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 401 predicate places. [2024-06-28 01:26:55,248 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 494 transitions, 9051 flow [2024-06-28 01:26:55,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:55,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:55,249 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:26:55,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-28 01:26:55,249 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:26:55,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:55,249 INFO L85 PathProgramCache]: Analyzing trace with hash 505787229, now seen corresponding path program 5 times [2024-06-28 01:26:55,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:55,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887511371] [2024-06-28 01:26:55,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:55,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:55,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:56,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:26:56,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:56,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887511371] [2024-06-28 01:26:56,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887511371] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:56,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:56,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:26:56,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976465780] [2024-06-28 01:26:56,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:56,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:26:56,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:56,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:26:56,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:26:56,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:26:56,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 494 transitions, 9051 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:56,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:56,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:26:56,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:59,045 INFO L124 PetriNetUnfolderBase]: 5036/9190 cut-off events. [2024-06-28 01:26:59,045 INFO L125 PetriNetUnfolderBase]: For 262928/262952 co-relation queries the response was YES. [2024-06-28 01:26:59,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63045 conditions, 9190 events. 5036/9190 cut-off events. For 262928/262952 co-relation queries the response was YES. Maximal size of possible extension queue 708. Compared 77102 event pairs, 2469 based on Foata normal form. 26/9059 useless extension candidates. Maximal degree in co-relation 62843. Up to 8490 conditions per place. [2024-06-28 01:26:59,195 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 489 selfloop transitions, 38 changer transitions 0/535 dead transitions. [2024-06-28 01:26:59,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 535 transitions, 10400 flow [2024-06-28 01:26:59,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:26:59,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:26:59,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 180 transitions. [2024-06-28 01:26:59,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-28 01:26:59,203 INFO L175 Difference]: Start difference. First operand has 441 places, 494 transitions, 9051 flow. Second operand 11 states and 180 transitions. [2024-06-28 01:26:59,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 451 places, 535 transitions, 10400 flow [2024-06-28 01:27:02,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 447 places, 535 transitions, 10291 flow, removed 36 selfloop flow, removed 4 redundant places. [2024-06-28 01:27:02,118 INFO L231 Difference]: Finished difference. Result has 448 places, 496 transitions, 9084 flow [2024-06-28 01:27:02,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=8942, PETRI_DIFFERENCE_MINUEND_PLACES=437, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=457, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9084, PETRI_PLACES=448, PETRI_TRANSITIONS=496} [2024-06-28 01:27:02,119 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 408 predicate places. [2024-06-28 01:27:02,119 INFO L495 AbstractCegarLoop]: Abstraction has has 448 places, 496 transitions, 9084 flow [2024-06-28 01:27:02,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:02,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:02,119 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:27:02,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-28 01:27:02,120 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:27:02,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:02,120 INFO L85 PathProgramCache]: Analyzing trace with hash 726003967, now seen corresponding path program 6 times [2024-06-28 01:27:02,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:02,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202047259] [2024-06-28 01:27:02,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:02,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:02,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:03,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:27:03,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:03,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202047259] [2024-06-28 01:27:03,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202047259] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:03,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:03,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:27:03,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305035395] [2024-06-28 01:27:03,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:03,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:27:03,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:03,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:27:03,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:27:03,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:27:03,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 496 transitions, 9084 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:03,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:03,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:27:03,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:06,092 INFO L124 PetriNetUnfolderBase]: 5052/9195 cut-off events. [2024-06-28 01:27:06,093 INFO L125 PetriNetUnfolderBase]: For 263621/263645 co-relation queries the response was YES. [2024-06-28 01:27:06,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63099 conditions, 9195 events. 5052/9195 cut-off events. For 263621/263645 co-relation queries the response was YES. Maximal size of possible extension queue 710. Compared 77052 event pairs, 2515 based on Foata normal form. 26/9068 useless extension candidates. Maximal degree in co-relation 62895. Up to 8701 conditions per place. [2024-06-28 01:27:06,207 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 495 selfloop transitions, 26 changer transitions 0/529 dead transitions. [2024-06-28 01:27:06,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 529 transitions, 10324 flow [2024-06-28 01:27:06,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:27:06,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:27:06,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-06-28 01:27:06,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-28 01:27:06,208 INFO L175 Difference]: Start difference. First operand has 448 places, 496 transitions, 9084 flow. Second operand 10 states and 165 transitions. [2024-06-28 01:27:06,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 529 transitions, 10324 flow [2024-06-28 01:27:08,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 529 transitions, 10199 flow, removed 30 selfloop flow, removed 5 redundant places. [2024-06-28 01:27:08,781 INFO L231 Difference]: Finished difference. Result has 453 places, 497 transitions, 9050 flow [2024-06-28 01:27:08,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=8959, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=496, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=470, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9050, PETRI_PLACES=453, PETRI_TRANSITIONS=497} [2024-06-28 01:27:08,782 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 413 predicate places. [2024-06-28 01:27:08,782 INFO L495 AbstractCegarLoop]: Abstraction has has 453 places, 497 transitions, 9050 flow [2024-06-28 01:27:08,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:08,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:08,782 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:27:08,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-28 01:27:08,783 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:27:08,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:08,783 INFO L85 PathProgramCache]: Analyzing trace with hash 725997023, now seen corresponding path program 24 times [2024-06-28 01:27:08,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:08,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680980996] [2024-06-28 01:27:08,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:08,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:08,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:09,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:27:09,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:09,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680980996] [2024-06-28 01:27:09,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680980996] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:09,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:09,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:27:09,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615498591] [2024-06-28 01:27:09,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:09,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:27:09,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:09,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:27:09,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:27:09,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:27:09,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 497 transitions, 9050 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:09,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:09,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:27:09,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:12,629 INFO L124 PetriNetUnfolderBase]: 5091/9263 cut-off events. [2024-06-28 01:27:12,629 INFO L125 PetriNetUnfolderBase]: For 282254/282278 co-relation queries the response was YES. [2024-06-28 01:27:12,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62239 conditions, 9263 events. 5091/9263 cut-off events. For 282254/282278 co-relation queries the response was YES. Maximal size of possible extension queue 716. Compared 77685 event pairs, 2502 based on Foata normal form. 40/9157 useless extension candidates. Maximal degree in co-relation 62034. Up to 8505 conditions per place. [2024-06-28 01:27:12,778 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 502 selfloop transitions, 29 changer transitions 0/539 dead transitions. [2024-06-28 01:27:12,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 463 places, 539 transitions, 10386 flow [2024-06-28 01:27:12,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:27:12,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:27:12,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 186 transitions. [2024-06-28 01:27:12,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4696969696969697 [2024-06-28 01:27:12,779 INFO L175 Difference]: Start difference. First operand has 453 places, 497 transitions, 9050 flow. Second operand 11 states and 186 transitions. [2024-06-28 01:27:12,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 463 places, 539 transitions, 10386 flow [2024-06-28 01:27:15,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 455 places, 539 transitions, 10299 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-28 01:27:15,385 INFO L231 Difference]: Finished difference. Result has 456 places, 497 transitions, 9029 flow [2024-06-28 01:27:15,385 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=8963, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=497, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=468, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9029, PETRI_PLACES=456, PETRI_TRANSITIONS=497} [2024-06-28 01:27:15,386 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 416 predicate places. [2024-06-28 01:27:15,386 INFO L495 AbstractCegarLoop]: Abstraction has has 456 places, 497 transitions, 9029 flow [2024-06-28 01:27:15,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:15,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:15,386 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:27:15,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-28 01:27:15,387 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:27:15,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:15,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1039048477, now seen corresponding path program 7 times [2024-06-28 01:27:15,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:15,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406088790] [2024-06-28 01:27:15,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:15,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:15,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:16,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:27:16,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:16,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406088790] [2024-06-28 01:27:16,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406088790] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:16,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:16,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:27:16,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316132086] [2024-06-28 01:27:16,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:16,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:27:16,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:16,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:27:16,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:27:16,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:27:16,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 497 transitions, 9029 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:16,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:16,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:27:16,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:18,931 INFO L124 PetriNetUnfolderBase]: 5111/9319 cut-off events. [2024-06-28 01:27:18,932 INFO L125 PetriNetUnfolderBase]: For 222228/222252 co-relation queries the response was YES. [2024-06-28 01:27:19,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62410 conditions, 9319 events. 5111/9319 cut-off events. For 222228/222252 co-relation queries the response was YES. Maximal size of possible extension queue 720. Compared 78447 event pairs, 2552 based on Foata normal form. 26/9191 useless extension candidates. Maximal degree in co-relation 62204. Up to 8766 conditions per place. [2024-06-28 01:27:19,073 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 497 selfloop transitions, 26 changer transitions 0/531 dead transitions. [2024-06-28 01:27:19,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 465 places, 531 transitions, 10277 flow [2024-06-28 01:27:19,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:27:19,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:27:19,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-06-28 01:27:19,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46111111111111114 [2024-06-28 01:27:19,078 INFO L175 Difference]: Start difference. First operand has 456 places, 497 transitions, 9029 flow. Second operand 10 states and 166 transitions. [2024-06-28 01:27:19,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 465 places, 531 transitions, 10277 flow [2024-06-28 01:27:21,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 531 transitions, 10225 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-28 01:27:21,660 INFO L231 Difference]: Finished difference. Result has 458 places, 499 transitions, 9081 flow [2024-06-28 01:27:21,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=8977, PETRI_DIFFERENCE_MINUEND_PLACES=447, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=497, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=471, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9081, PETRI_PLACES=458, PETRI_TRANSITIONS=499} [2024-06-28 01:27:21,661 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 418 predicate places. [2024-06-28 01:27:21,661 INFO L495 AbstractCegarLoop]: Abstraction has has 458 places, 499 transitions, 9081 flow [2024-06-28 01:27:21,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:21,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:21,661 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:27:21,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-28 01:27:21,662 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:27:21,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:21,662 INFO L85 PathProgramCache]: Analyzing trace with hash 735764139, now seen corresponding path program 8 times [2024-06-28 01:27:21,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:21,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934406653] [2024-06-28 01:27:21,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:21,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:21,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:22,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:27:22,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:22,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934406653] [2024-06-28 01:27:22,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934406653] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:22,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:22,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:27:22,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549300491] [2024-06-28 01:27:22,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:22,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:27:22,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:22,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:27:22,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:27:22,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:27:22,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 458 places, 499 transitions, 9081 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:22,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:22,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:27:22,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:25,408 INFO L124 PetriNetUnfolderBase]: 5112/9300 cut-off events. [2024-06-28 01:27:25,408 INFO L125 PetriNetUnfolderBase]: For 213812/213836 co-relation queries the response was YES. [2024-06-28 01:27:25,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62316 conditions, 9300 events. 5112/9300 cut-off events. For 213812/213836 co-relation queries the response was YES. Maximal size of possible extension queue 723. Compared 77879 event pairs, 2556 based on Foata normal form. 26/9179 useless extension candidates. Maximal degree in co-relation 62108. Up to 8831 conditions per place. [2024-06-28 01:27:25,568 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 502 selfloop transitions, 24 changer transitions 0/534 dead transitions. [2024-06-28 01:27:25,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 467 places, 534 transitions, 10325 flow [2024-06-28 01:27:25,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:27:25,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:27:25,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-06-28 01:27:25,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-28 01:27:25,569 INFO L175 Difference]: Start difference. First operand has 458 places, 499 transitions, 9081 flow. Second operand 10 states and 165 transitions. [2024-06-28 01:27:25,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 467 places, 534 transitions, 10325 flow [2024-06-28 01:27:28,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 534 transitions, 10249 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-28 01:27:28,315 INFO L231 Difference]: Finished difference. Result has 461 places, 500 transitions, 9095 flow [2024-06-28 01:27:28,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=9005, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=499, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=475, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9095, PETRI_PLACES=461, PETRI_TRANSITIONS=500} [2024-06-28 01:27:28,316 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 421 predicate places. [2024-06-28 01:27:28,316 INFO L495 AbstractCegarLoop]: Abstraction has has 461 places, 500 transitions, 9095 flow [2024-06-28 01:27:28,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:28,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:28,316 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:27:28,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-28 01:27:28,316 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:27:28,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:28,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1791984561, now seen corresponding path program 25 times [2024-06-28 01:27:28,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:28,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531964477] [2024-06-28 01:27:28,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:28,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:28,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:29,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:27:29,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:29,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531964477] [2024-06-28 01:27:29,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531964477] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:29,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:29,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:27:29,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661994249] [2024-06-28 01:27:29,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:29,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:27:29,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:29,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:27:29,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:27:29,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:27:29,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 500 transitions, 9095 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:29,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:29,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:27:29,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:32,671 INFO L124 PetriNetUnfolderBase]: 5542/10604 cut-off events. [2024-06-28 01:27:32,671 INFO L125 PetriNetUnfolderBase]: For 239587/239612 co-relation queries the response was YES. [2024-06-28 01:27:32,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67822 conditions, 10604 events. 5542/10604 cut-off events. For 239587/239612 co-relation queries the response was YES. Maximal size of possible extension queue 791. Compared 95170 event pairs, 1945 based on Foata normal form. 33/10353 useless extension candidates. Maximal degree in co-relation 67613. Up to 7352 conditions per place. [2024-06-28 01:27:32,853 INFO L140 encePairwiseOnDemand]: 22/36 looper letters, 447 selfloop transitions, 179 changer transitions 0/634 dead transitions. [2024-06-28 01:27:32,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 473 places, 634 transitions, 12179 flow [2024-06-28 01:27:32,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 01:27:32,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 01:27:32,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 249 transitions. [2024-06-28 01:27:32,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.532051282051282 [2024-06-28 01:27:32,854 INFO L175 Difference]: Start difference. First operand has 461 places, 500 transitions, 9095 flow. Second operand 13 states and 249 transitions. [2024-06-28 01:27:32,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 473 places, 634 transitions, 12179 flow [2024-06-28 01:27:36,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 465 places, 634 transitions, 12099 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-28 01:27:36,166 INFO L231 Difference]: Finished difference. Result has 469 places, 546 transitions, 10539 flow [2024-06-28 01:27:36,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=9015, PETRI_DIFFERENCE_MINUEND_PLACES=453, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=500, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=10539, PETRI_PLACES=469, PETRI_TRANSITIONS=546} [2024-06-28 01:27:36,166 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 429 predicate places. [2024-06-28 01:27:36,167 INFO L495 AbstractCegarLoop]: Abstraction has has 469 places, 546 transitions, 10539 flow [2024-06-28 01:27:36,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:36,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:36,167 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:27:36,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-28 01:27:36,167 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:27:36,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:36,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1667455877, now seen corresponding path program 1 times [2024-06-28 01:27:36,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:36,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46594895] [2024-06-28 01:27:36,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:36,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:36,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:37,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:27:37,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:37,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46594895] [2024-06-28 01:27:37,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46594895] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:37,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:37,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:27:37,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147030882] [2024-06-28 01:27:37,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:37,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:27:37,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:37,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:27:37,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:27:37,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:27:37,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 469 places, 546 transitions, 10539 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:37,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:37,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:27:37,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:41,545 INFO L124 PetriNetUnfolderBase]: 5578/10727 cut-off events. [2024-06-28 01:27:41,545 INFO L125 PetriNetUnfolderBase]: For 248073/248100 co-relation queries the response was YES. [2024-06-28 01:27:41,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70760 conditions, 10727 events. 5578/10727 cut-off events. For 248073/248100 co-relation queries the response was YES. Maximal size of possible extension queue 800. Compared 96984 event pairs, 2088 based on Foata normal form. 33/10474 useless extension candidates. Maximal degree in co-relation 70547. Up to 7027 conditions per place. [2024-06-28 01:27:41,692 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 405 selfloop transitions, 196 changer transitions 0/609 dead transitions. [2024-06-28 01:27:41,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 479 places, 609 transitions, 12318 flow [2024-06-28 01:27:41,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:27:41,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:27:41,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 202 transitions. [2024-06-28 01:27:41,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.51010101010101 [2024-06-28 01:27:41,693 INFO L175 Difference]: Start difference. First operand has 469 places, 546 transitions, 10539 flow. Second operand 11 states and 202 transitions. [2024-06-28 01:27:41,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 479 places, 609 transitions, 12318 flow [2024-06-28 01:27:44,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 472 places, 609 transitions, 12152 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-28 01:27:44,362 INFO L231 Difference]: Finished difference. Result has 474 places, 547 transitions, 10841 flow [2024-06-28 01:27:44,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=10383, PETRI_DIFFERENCE_MINUEND_PLACES=462, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=546, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=195, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10841, PETRI_PLACES=474, PETRI_TRANSITIONS=547} [2024-06-28 01:27:44,363 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 434 predicate places. [2024-06-28 01:27:44,363 INFO L495 AbstractCegarLoop]: Abstraction has has 474 places, 547 transitions, 10841 flow [2024-06-28 01:27:44,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:44,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:44,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:27:44,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-28 01:27:44,364 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:27:44,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:44,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1815935949, now seen corresponding path program 2 times [2024-06-28 01:27:44,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:44,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408570399] [2024-06-28 01:27:44,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:44,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:44,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:45,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:27:45,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:45,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408570399] [2024-06-28 01:27:45,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408570399] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:45,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:45,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:27:45,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330834739] [2024-06-28 01:27:45,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:45,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:27:45,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:45,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:27:45,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:27:45,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:27:45,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 474 places, 547 transitions, 10841 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:45,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:45,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:27:45,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:49,381 INFO L124 PetriNetUnfolderBase]: 5614/10497 cut-off events. [2024-06-28 01:27:49,381 INFO L125 PetriNetUnfolderBase]: For 257204/257227 co-relation queries the response was YES. [2024-06-28 01:27:49,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71464 conditions, 10497 events. 5614/10497 cut-off events. For 257204/257227 co-relation queries the response was YES. Maximal size of possible extension queue 810. Compared 92412 event pairs, 2870 based on Foata normal form. 29/10306 useless extension candidates. Maximal degree in co-relation 71248. Up to 9221 conditions per place. [2024-06-28 01:27:49,535 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 518 selfloop transitions, 79 changer transitions 0/605 dead transitions. [2024-06-28 01:27:49,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 484 places, 605 transitions, 12536 flow [2024-06-28 01:27:49,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:27:49,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:27:49,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 190 transitions. [2024-06-28 01:27:49,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4797979797979798 [2024-06-28 01:27:49,544 INFO L175 Difference]: Start difference. First operand has 474 places, 547 transitions, 10841 flow. Second operand 11 states and 190 transitions. [2024-06-28 01:27:49,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 484 places, 605 transitions, 12536 flow [2024-06-28 01:27:52,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 474 places, 605 transitions, 12137 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 01:27:52,315 INFO L231 Difference]: Finished difference. Result has 475 places, 547 transitions, 10603 flow [2024-06-28 01:27:52,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=10442, PETRI_DIFFERENCE_MINUEND_PLACES=464, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=547, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=468, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10603, PETRI_PLACES=475, PETRI_TRANSITIONS=547} [2024-06-28 01:27:52,315 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 435 predicate places. [2024-06-28 01:27:52,315 INFO L495 AbstractCegarLoop]: Abstraction has has 475 places, 547 transitions, 10603 flow [2024-06-28 01:27:52,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:52,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:52,316 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:27:52,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-28 01:27:52,316 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:27:52,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:52,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1038697221, now seen corresponding path program 3 times [2024-06-28 01:27:52,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:52,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873892653] [2024-06-28 01:27:52,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:52,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:52,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:53,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:27:53,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:53,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873892653] [2024-06-28 01:27:53,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873892653] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:53,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:53,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:27:53,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741225473] [2024-06-28 01:27:53,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:53,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:27:53,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:53,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:27:53,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:27:53,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:27:53,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 547 transitions, 10603 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:53,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:53,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:27:53,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:57,605 INFO L124 PetriNetUnfolderBase]: 5710/10684 cut-off events. [2024-06-28 01:27:57,605 INFO L125 PetriNetUnfolderBase]: For 255398/255422 co-relation queries the response was YES. [2024-06-28 01:27:57,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72021 conditions, 10684 events. 5710/10684 cut-off events. For 255398/255422 co-relation queries the response was YES. Maximal size of possible extension queue 825. Compared 94527 event pairs, 2908 based on Foata normal form. 30/10492 useless extension candidates. Maximal degree in co-relation 71806. Up to 9390 conditions per place. [2024-06-28 01:27:57,755 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 564 selfloop transitions, 38 changer transitions 0/610 dead transitions. [2024-06-28 01:27:57,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 487 places, 610 transitions, 12366 flow [2024-06-28 01:27:57,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 01:27:57,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 01:27:57,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 217 transitions. [2024-06-28 01:27:57,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4636752136752137 [2024-06-28 01:27:57,781 INFO L175 Difference]: Start difference. First operand has 475 places, 547 transitions, 10603 flow. Second operand 13 states and 217 transitions. [2024-06-28 01:27:57,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 487 places, 610 transitions, 12366 flow [2024-06-28 01:28:00,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 610 transitions, 12209 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-28 01:28:00,568 INFO L231 Difference]: Finished difference. Result has 484 places, 556 transitions, 10720 flow [2024-06-28 01:28:00,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=10446, PETRI_DIFFERENCE_MINUEND_PLACES=466, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=547, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=509, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=10720, PETRI_PLACES=484, PETRI_TRANSITIONS=556} [2024-06-28 01:28:00,569 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 444 predicate places. [2024-06-28 01:28:00,569 INFO L495 AbstractCegarLoop]: Abstraction has has 484 places, 556 transitions, 10720 flow [2024-06-28 01:28:00,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:00,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:00,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:00,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-28 01:28:00,570 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:28:00,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:00,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1500463671, now seen corresponding path program 4 times [2024-06-28 01:28:00,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:00,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477691819] [2024-06-28 01:28:00,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:00,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:00,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:01,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:01,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:01,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477691819] [2024-06-28 01:28:01,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477691819] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:01,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:01,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:28:01,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702006099] [2024-06-28 01:28:01,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:01,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:28:01,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:01,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:28:01,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:28:01,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:28:01,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 484 places, 556 transitions, 10720 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:01,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:01,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:28:01,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:05,644 INFO L124 PetriNetUnfolderBase]: 5746/10748 cut-off events. [2024-06-28 01:28:05,644 INFO L125 PetriNetUnfolderBase]: For 257294/257318 co-relation queries the response was YES. [2024-06-28 01:28:05,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72413 conditions, 10748 events. 5746/10748 cut-off events. For 257294/257318 co-relation queries the response was YES. Maximal size of possible extension queue 834. Compared 95162 event pairs, 2999 based on Foata normal form. 30/10559 useless extension candidates. Maximal degree in co-relation 72192. Up to 9741 conditions per place. [2024-06-28 01:28:05,983 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 552 selfloop transitions, 42 changer transitions 0/602 dead transitions. [2024-06-28 01:28:05,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 494 places, 602 transitions, 12249 flow [2024-06-28 01:28:05,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:28:05,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:28:05,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 184 transitions. [2024-06-28 01:28:05,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46464646464646464 [2024-06-28 01:28:05,985 INFO L175 Difference]: Start difference. First operand has 484 places, 556 transitions, 10720 flow. Second operand 11 states and 184 transitions. [2024-06-28 01:28:05,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 494 places, 602 transitions, 12249 flow [2024-06-28 01:28:08,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 488 places, 602 transitions, 12164 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-28 01:28:08,882 INFO L231 Difference]: Finished difference. Result has 489 places, 556 transitions, 10722 flow [2024-06-28 01:28:08,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=10635, PETRI_DIFFERENCE_MINUEND_PLACES=478, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=556, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=514, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10722, PETRI_PLACES=489, PETRI_TRANSITIONS=556} [2024-06-28 01:28:08,885 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 449 predicate places. [2024-06-28 01:28:08,885 INFO L495 AbstractCegarLoop]: Abstraction has has 489 places, 556 transitions, 10722 flow [2024-06-28 01:28:08,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:08,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:08,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:08,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-28 01:28:08,886 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:28:08,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:08,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1807829307, now seen corresponding path program 5 times [2024-06-28 01:28:08,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:08,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642886005] [2024-06-28 01:28:08,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:08,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:08,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:09,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:09,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:09,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642886005] [2024-06-28 01:28:09,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642886005] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:09,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:09,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:28:09,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869304717] [2024-06-28 01:28:09,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:09,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:28:09,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:09,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:28:09,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:28:09,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:28:09,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 489 places, 556 transitions, 10722 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:09,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:09,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:28:09,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:13,779 INFO L124 PetriNetUnfolderBase]: 5767/10787 cut-off events. [2024-06-28 01:28:13,779 INFO L125 PetriNetUnfolderBase]: For 228427/228451 co-relation queries the response was YES. [2024-06-28 01:28:13,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72128 conditions, 10787 events. 5767/10787 cut-off events. For 228427/228451 co-relation queries the response was YES. Maximal size of possible extension queue 842. Compared 95364 event pairs, 3018 based on Foata normal form. 30/10597 useless extension candidates. Maximal degree in co-relation 71906. Up to 9954 conditions per place. [2024-06-28 01:28:13,951 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 568 selfloop transitions, 25 changer transitions 0/601 dead transitions. [2024-06-28 01:28:13,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 499 places, 601 transitions, 12026 flow [2024-06-28 01:28:13,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:28:13,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:28:13,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 192 transitions. [2024-06-28 01:28:13,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-28 01:28:13,952 INFO L175 Difference]: Start difference. First operand has 489 places, 556 transitions, 10722 flow. Second operand 12 states and 192 transitions. [2024-06-28 01:28:13,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 499 places, 601 transitions, 12026 flow [2024-06-28 01:28:15,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 601 transitions, 11375 flow, removed 29 selfloop flow, removed 79 redundant places. [2024-06-28 01:28:15,808 INFO L231 Difference]: Finished difference. Result has 423 places, 560 transitions, 10021 flow [2024-06-28 01:28:15,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=9878, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=555, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=530, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10021, PETRI_PLACES=423, PETRI_TRANSITIONS=560} [2024-06-28 01:28:15,809 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 383 predicate places. [2024-06-28 01:28:15,809 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 560 transitions, 10021 flow [2024-06-28 01:28:15,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:15,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:15,809 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:15,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-28 01:28:15,810 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:28:15,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:15,810 INFO L85 PathProgramCache]: Analyzing trace with hash 500420736, now seen corresponding path program 1 times [2024-06-28 01:28:15,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:15,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798265151] [2024-06-28 01:28:15,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:15,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:15,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:15,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:15,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:15,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798265151] [2024-06-28 01:28:15,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798265151] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:15,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:15,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:28:15,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565101856] [2024-06-28 01:28:15,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:15,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:28:15,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:15,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:28:15,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:28:15,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 36 [2024-06-28 01:28:15,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 560 transitions, 10021 flow. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:15,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:15,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 36 [2024-06-28 01:28:15,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:18,305 INFO L124 PetriNetUnfolderBase]: 4307/10167 cut-off events. [2024-06-28 01:28:18,305 INFO L125 PetriNetUnfolderBase]: For 136934/137165 co-relation queries the response was YES. [2024-06-28 01:28:18,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52014 conditions, 10167 events. 4307/10167 cut-off events. For 136934/137165 co-relation queries the response was YES. Maximal size of possible extension queue 631. Compared 103112 event pairs, 800 based on Foata normal form. 702/10216 useless extension candidates. Maximal degree in co-relation 51872. Up to 4321 conditions per place. [2024-06-28 01:28:18,401 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 202 selfloop transitions, 132 changer transitions 0/418 dead transitions. [2024-06-28 01:28:18,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 418 transitions, 8525 flow [2024-06-28 01:28:18,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:28:18,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:28:18,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 99 transitions. [2024-06-28 01:28:18,402 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6875 [2024-06-28 01:28:18,403 INFO L175 Difference]: Start difference. First operand has 423 places, 560 transitions, 10021 flow. Second operand 4 states and 99 transitions. [2024-06-28 01:28:18,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 418 transitions, 8525 flow [2024-06-28 01:28:18,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 418 transitions, 5956 flow, removed 58 selfloop flow, removed 143 redundant places. [2024-06-28 01:28:18,913 INFO L231 Difference]: Finished difference. Result has 281 places, 376 transitions, 5310 flow [2024-06-28 01:28:18,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4776, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=5310, PETRI_PLACES=281, PETRI_TRANSITIONS=376} [2024-06-28 01:28:18,914 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 241 predicate places. [2024-06-28 01:28:18,914 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 376 transitions, 5310 flow [2024-06-28 01:28:18,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:18,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:18,914 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, 1] [2024-06-28 01:28:18,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-28 01:28:18,915 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:28:18,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:18,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1994352435, now seen corresponding path program 1 times [2024-06-28 01:28:18,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:18,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361883539] [2024-06-28 01:28:18,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:18,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:18,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:18,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:18,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:18,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361883539] [2024-06-28 01:28:18,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361883539] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:18,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:18,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:28:18,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193511854] [2024-06-28 01:28:18,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:18,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:28:18,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:18,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:28:18,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:28:19,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 36 [2024-06-28 01:28:19,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 376 transitions, 5310 flow. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 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) [2024-06-28 01:28:19,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:19,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 36 [2024-06-28 01:28:19,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand