./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix056_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-05-07_14-17-48.files/protection/mix056_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b44c8288 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/mix056_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i ./goblint.2024-05-07_14-17-48.files/protection/mix056_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-wip.fs.witness-ghost-b44c828-m [2024-05-12 13:28:31,985 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-05-12 13:28:32,045 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-05-12 13:28:32,050 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-05-12 13:28:32,050 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-05-12 13:28:32,075 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-05-12 13:28:32,076 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-05-12 13:28:32,076 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-05-12 13:28:32,077 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-05-12 13:28:32,080 INFO L153 SettingsManager]: * Use memory slicer=true [2024-05-12 13:28:32,081 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-05-12 13:28:32,081 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-05-12 13:28:32,082 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-05-12 13:28:32,083 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-05-12 13:28:32,083 INFO L153 SettingsManager]: * Use SBE=true [2024-05-12 13:28:32,084 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-05-12 13:28:32,084 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-05-12 13:28:32,084 INFO L153 SettingsManager]: * sizeof long=4 [2024-05-12 13:28:32,084 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-05-12 13:28:32,085 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-05-12 13:28:32,085 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-05-12 13:28:32,085 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-05-12 13:28:32,085 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-05-12 13:28:32,085 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-05-12 13:28:32,086 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-05-12 13:28:32,086 INFO L153 SettingsManager]: * sizeof long double=12 [2024-05-12 13:28:32,086 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-05-12 13:28:32,086 INFO L153 SettingsManager]: * Use constant arrays=true [2024-05-12 13:28:32,087 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-05-12 13:28:32,087 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-05-12 13:28:32,088 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-05-12 13:28:32,088 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-05-12 13:28:32,088 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 13:28:32,088 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-05-12 13:28:32,088 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-05-12 13:28:32,089 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-05-12 13:28:32,089 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-05-12 13:28:32,089 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-05-12 13:28:32,089 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-05-12 13:28:32,089 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-05-12 13:28:32,089 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-05-12 13:28:32,090 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-05-12 13:28:32,090 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-05-12 13:28:32,090 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-05-12 13:28:32,254 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-05-12 13:28:32,281 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-05-12 13:28:32,283 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-05-12 13:28:32,284 INFO L270 PluginConnector]: Initializing CDTParser... [2024-05-12 13:28:32,284 INFO L274 PluginConnector]: CDTParser initialized [2024-05-12 13:28:32,285 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix056_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-05-12 13:28:33,335 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-05-12 13:28:33,567 INFO L384 CDTParser]: Found 1 translation units. [2024-05-12 13:28:33,568 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix056_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-05-12 13:28:33,591 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/408f460d9/48d93f28ca3a47a49db9d204bf7157f8/FLAGffa6b9684 [2024-05-12 13:28:33,601 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/408f460d9/48d93f28ca3a47a49db9d204bf7157f8 [2024-05-12 13:28:33,603 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-05-12 13:28:33,604 INFO L274 PluginConnector]: Witness Parser initialized [2024-05-12 13:28:33,604 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-07_14-17-48.files/protection/mix056_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.yml/witness.yml [2024-05-12 13:28:33,798 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-05-12 13:28:33,799 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-05-12 13:28:33,800 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-05-12 13:28:33,800 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-05-12 13:28:33,804 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-05-12 13:28:33,805 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 01:28:33" (1/2) ... [2024-05-12 13:28:33,806 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61ae73d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:28:33, skipping insertion in model container [2024-05-12 13:28:33,806 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 01:28:33" (1/2) ... [2024-05-12 13:28:33,807 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2210b5c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:28:33, skipping insertion in model container [2024-05-12 13:28:33,808 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:28:33" (2/2) ... [2024-05-12 13:28:33,808 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61ae73d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:28:33, skipping insertion in model container [2024-05-12 13:28:33,808 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:28:33" (2/2) ... [2024-05-12 13:28:33,808 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-05-12 13:28:33,867 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-05-12 13:28:33,868 INFO L97 edCorrectnessWitness]: Location invariant before [L818-L818] ((((((((((((((((! multithreaded || y$r_buff1_thd0 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((((0 <= y$w_buff0 && y$w_buff0 <= 2) && y$w_buff0 <= 127) && y$w_buff0 % 2 == 0) && (y$w_buff0 == 0 || y$w_buff0 == 2)))) && (! multithreaded || ((((0 <= y$w_buff1 && y$w_buff1 <= 2) && y$w_buff1 <= 127) && y$w_buff1 % 2 == 0) && (y$w_buff1 == 0 || y$w_buff1 == 2)))) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || (((0 <= y$mem_tmp && y$mem_tmp <= 2) && y$mem_tmp <= 127) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2))) [2024-05-12 13:28:33,869 INFO L97 edCorrectnessWitness]: Location invariant before [L819-L819] ((((((((((((((((! multithreaded || y$r_buff1_thd0 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((((0 <= y$w_buff0 && y$w_buff0 <= 2) && y$w_buff0 <= 127) && y$w_buff0 % 2 == 0) && (y$w_buff0 == 0 || y$w_buff0 == 2)))) && (! multithreaded || ((((0 <= y$w_buff1 && y$w_buff1 <= 2) && y$w_buff1 <= 127) && y$w_buff1 % 2 == 0) && (y$w_buff1 == 0 || y$w_buff1 == 2)))) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || (((0 <= y$mem_tmp && y$mem_tmp <= 2) && y$mem_tmp <= 127) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2))) [2024-05-12 13:28:33,869 INFO L97 edCorrectnessWitness]: Location invariant before [L816-L816] ((((((((((((((((! multithreaded || y$r_buff1_thd0 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((((0 <= y$w_buff0 && y$w_buff0 <= 2) && y$w_buff0 <= 127) && y$w_buff0 % 2 == 0) && (y$w_buff0 == 0 || y$w_buff0 == 2)))) && (! multithreaded || ((((0 <= y$w_buff1 && y$w_buff1 <= 2) && y$w_buff1 <= 127) && y$w_buff1 % 2 == 0) && (y$w_buff1 == 0 || y$w_buff1 == 2)))) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || (((0 <= y$mem_tmp && y$mem_tmp <= 2) && y$mem_tmp <= 127) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2))) [2024-05-12 13:28:33,869 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-05-12 13:28:33,869 INFO L106 edCorrectnessWitness]: ghost_update [L814-L814] multithreaded = 1; [2024-05-12 13:28:33,906 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-05-12 13:28:34,056 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix056_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i[983,996] [2024-05-12 13:28:34,210 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 13:28:34,218 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-05-12 13:28:34,249 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix056_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i[983,996] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-05-12 13:28:34,328 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 13:28:34,356 INFO L206 MainTranslator]: Completed translation [2024-05-12 13:28:34,357 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:28:34 WrapperNode [2024-05-12 13:28:34,357 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-05-12 13:28:34,358 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-05-12 13:28:34,358 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-05-12 13:28:34,358 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-05-12 13:28:34,363 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 12.05 01:28:34" (1/1) ... [2024-05-12 13:28:34,381 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 12.05 01:28:34" (1/1) ... [2024-05-12 13:28:34,405 INFO L138 Inliner]: procedures = 176, calls = 54, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 149 [2024-05-12 13:28:34,405 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-05-12 13:28:34,406 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-05-12 13:28:34,406 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-05-12 13:28:34,406 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-05-12 13:28:34,414 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:28:34" (1/1) ... [2024-05-12 13:28:34,414 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:28:34" (1/1) ... [2024-05-12 13:28:34,417 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:28:34" (1/1) ... [2024-05-12 13:28:34,428 INFO L175 MemorySlicer]: Split 5 memory accesses to 4 slices as follows [2, 1, 1, 1]. 40 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2024-05-12 13:28:34,428 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:28:34" (1/1) ... [2024-05-12 13:28:34,429 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:28:34" (1/1) ... [2024-05-12 13:28:34,436 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:28:34" (1/1) ... [2024-05-12 13:28:34,437 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:28:34" (1/1) ... [2024-05-12 13:28:34,438 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:28:34" (1/1) ... [2024-05-12 13:28:34,440 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:28:34" (1/1) ... [2024-05-12 13:28:34,442 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-05-12 13:28:34,443 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-05-12 13:28:34,443 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-05-12 13:28:34,443 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-05-12 13:28:34,444 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:28:34" (1/1) ... [2024-05-12 13:28:34,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 13:28:34,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 13:28:34,465 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) [2024-05-12 13:28:34,473 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 [2024-05-12 13:28:34,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-05-12 13:28:34,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-05-12 13:28:34,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-05-12 13:28:34,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-05-12 13:28:34,494 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-05-12 13:28:34,494 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-05-12 13:28:34,494 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-05-12 13:28:34,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-05-12 13:28:34,494 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-05-12 13:28:34,495 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-05-12 13:28:34,495 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-05-12 13:28:34,495 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-05-12 13:28:34,495 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-05-12 13:28:34,495 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-05-12 13:28:34,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-05-12 13:28:34,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-05-12 13:28:34,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-05-12 13:28:34,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-05-12 13:28:34,496 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-05-12 13:28:34,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-05-12 13:28:34,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-05-12 13:28:34,497 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-05-12 13:28:34,645 INFO L244 CfgBuilder]: Building ICFG [2024-05-12 13:28:34,647 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-05-12 13:28:34,931 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-05-12 13:28:34,932 INFO L293 CfgBuilder]: Performing block encoding [2024-05-12 13:28:35,109 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-05-12 13:28:35,110 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-05-12 13:28:35,111 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 01:28:35 BoogieIcfgContainer [2024-05-12 13:28:35,111 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-05-12 13:28:35,115 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-05-12 13:28:35,115 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-05-12 13:28:35,117 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-05-12 13:28:35,118 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.05 01:28:33" (1/4) ... [2024-05-12 13:28:35,118 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@701a88fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 01:28:35, skipping insertion in model container [2024-05-12 13:28:35,118 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:28:33" (2/4) ... [2024-05-12 13:28:35,119 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@701a88fe and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 01:28:35, skipping insertion in model container [2024-05-12 13:28:35,119 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:28:34" (3/4) ... [2024-05-12 13:28:35,119 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@701a88fe and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 01:28:35, skipping insertion in model container [2024-05-12 13:28:35,120 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 01:28:35" (4/4) ... [2024-05-12 13:28:35,121 INFO L112 eAbstractionObserver]: Analyzing ICFG mix056_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-05-12 13:28:35,135 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-05-12 13:28:35,135 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-05-12 13:28:35,136 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-05-12 13:28:35,174 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-05-12 13:28:35,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 47 transitions, 106 flow [2024-05-12 13:28:35,235 INFO L124 PetriNetUnfolderBase]: 1/44 cut-off events. [2024-05-12 13:28:35,235 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 13:28:35,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 44 events. 1/44 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 74 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2024-05-12 13:28:35,238 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 47 transitions, 106 flow [2024-05-12 13:28:35,240 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 44 transitions, 97 flow [2024-05-12 13:28:35,247 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-05-12 13:28:35,252 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;@127f9e62, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-12 13:28:35,252 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-05-12 13:28:35,255 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-05-12 13:28:35,256 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-05-12 13:28:35,256 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 13:28:35,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:28:35,257 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-05-12 13:28:35,257 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:28:35,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:28:35,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1917670957, now seen corresponding path program 1 times [2024-05-12 13:28:35,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:28:35,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727636639] [2024-05-12 13:28:35,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:28:35,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:28:35,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:28:36,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:28:36,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:28:36,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727636639] [2024-05-12 13:28:36,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727636639] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:28:36,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:28:36,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 13:28:36,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076027473] [2024-05-12 13:28:36,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:28:36,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 13:28:36,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:28:36,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 13:28:36,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 13:28:36,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-05-12 13:28:36,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 97 flow. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:28:36,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:28:36,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-05-12 13:28:36,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:28:36,959 INFO L124 PetriNetUnfolderBase]: 3578/5786 cut-off events. [2024-05-12 13:28:36,959 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2024-05-12 13:28:36,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11021 conditions, 5786 events. 3578/5786 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 36550 event pairs, 2940 based on Foata normal form. 181/5495 useless extension candidates. Maximal degree in co-relation 11006. Up to 5143 conditions per place. [2024-05-12 13:28:36,991 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 44 selfloop transitions, 5 changer transitions 0/59 dead transitions. [2024-05-12 13:28:36,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 59 transitions, 231 flow [2024-05-12 13:28:36,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 13:28:36,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 13:28:37,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2024-05-12 13:28:37,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6595744680851063 [2024-05-12 13:28:37,002 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 97 flow. Second operand 3 states and 93 transitions. [2024-05-12 13:28:37,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 59 transitions, 231 flow [2024-05-12 13:28:37,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 59 transitions, 226 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-05-12 13:28:37,010 INFO L231 Difference]: Finished difference. Result has 53 places, 47 transitions, 129 flow [2024-05-12 13:28:37,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=129, PETRI_PLACES=53, PETRI_TRANSITIONS=47} [2024-05-12 13:28:37,014 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 0 predicate places. [2024-05-12 13:28:37,014 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 47 transitions, 129 flow [2024-05-12 13:28:37,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:28:37,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:28:37,015 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:28:37,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-05-12 13:28:37,015 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:28:37,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:28:37,017 INFO L85 PathProgramCache]: Analyzing trace with hash -340805838, now seen corresponding path program 1 times [2024-05-12 13:28:37,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:28:37,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739008756] [2024-05-12 13:28:37,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:28:37,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:28:37,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:28:37,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:28:37,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:28:37,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739008756] [2024-05-12 13:28:37,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739008756] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:28:37,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:28:37,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-05-12 13:28:37,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224558047] [2024-05-12 13:28:37,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:28:37,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 13:28:37,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:28:37,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 13:28:37,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-05-12 13:28:37,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-05-12 13:28:37,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 47 transitions, 129 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:28:37,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:28:37,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-05-12 13:28:37,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:28:38,253 INFO L124 PetriNetUnfolderBase]: 4173/6011 cut-off events. [2024-05-12 13:28:38,253 INFO L125 PetriNetUnfolderBase]: For 798/798 co-relation queries the response was YES. [2024-05-12 13:28:38,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13487 conditions, 6011 events. 4173/6011 cut-off events. For 798/798 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 32658 event pairs, 2028 based on Foata normal form. 3/5772 useless extension candidates. Maximal degree in co-relation 13472. Up to 5950 conditions per place. [2024-05-12 13:28:38,282 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 57 selfloop transitions, 9 changer transitions 0/75 dead transitions. [2024-05-12 13:28:38,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 75 transitions, 331 flow [2024-05-12 13:28:38,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 13:28:38,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 13:28:38,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 117 transitions. [2024-05-12 13:28:38,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6223404255319149 [2024-05-12 13:28:38,287 INFO L175 Difference]: Start difference. First operand has 53 places, 47 transitions, 129 flow. Second operand 4 states and 117 transitions. [2024-05-12 13:28:38,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 75 transitions, 331 flow [2024-05-12 13:28:38,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 75 transitions, 326 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 13:28:38,290 INFO L231 Difference]: Finished difference. Result has 56 places, 51 transitions, 175 flow [2024-05-12 13:28:38,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=175, PETRI_PLACES=56, PETRI_TRANSITIONS=51} [2024-05-12 13:28:38,294 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 3 predicate places. [2024-05-12 13:28:38,294 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 51 transitions, 175 flow [2024-05-12 13:28:38,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:28:38,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:28:38,295 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:28:38,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-05-12 13:28:38,295 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:28:38,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:28:38,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1975045892, now seen corresponding path program 1 times [2024-05-12 13:28:38,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:28:38,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468804733] [2024-05-12 13:28:38,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:28:38,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:28:38,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:28:38,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:28:38,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:28:38,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468804733] [2024-05-12 13:28:38,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468804733] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:28:38,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:28:38,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 13:28:38,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032971595] [2024-05-12 13:28:38,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:28:38,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 13:28:38,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:28:38,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 13:28:38,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-05-12 13:28:38,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-05-12 13:28:38,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 51 transitions, 175 flow. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:28:38,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:28:38,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-05-12 13:28:38,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:28:39,562 INFO L124 PetriNetUnfolderBase]: 4203/6068 cut-off events. [2024-05-12 13:28:39,562 INFO L125 PetriNetUnfolderBase]: For 2243/2243 co-relation queries the response was YES. [2024-05-12 13:28:39,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14990 conditions, 6068 events. 4203/6068 cut-off events. For 2243/2243 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 33477 event pairs, 1444 based on Foata normal form. 5/5820 useless extension candidates. Maximal degree in co-relation 14973. Up to 5868 conditions per place. [2024-05-12 13:28:39,594 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 75 selfloop transitions, 21 changer transitions 0/105 dead transitions. [2024-05-12 13:28:39,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 105 transitions, 535 flow [2024-05-12 13:28:39,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 13:28:39,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 13:28:39,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 153 transitions. [2024-05-12 13:28:39,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6510638297872341 [2024-05-12 13:28:39,597 INFO L175 Difference]: Start difference. First operand has 56 places, 51 transitions, 175 flow. Second operand 5 states and 153 transitions. [2024-05-12 13:28:39,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 105 transitions, 535 flow [2024-05-12 13:28:39,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 105 transitions, 516 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-05-12 13:28:39,600 INFO L231 Difference]: Finished difference. Result has 61 places, 65 transitions, 304 flow [2024-05-12 13:28:39,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=304, PETRI_PLACES=61, PETRI_TRANSITIONS=65} [2024-05-12 13:28:39,601 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 8 predicate places. [2024-05-12 13:28:39,601 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 65 transitions, 304 flow [2024-05-12 13:28:39,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:28:39,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:28:39,601 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:28:39,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-05-12 13:28:39,601 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:28:39,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:28:39,602 INFO L85 PathProgramCache]: Analyzing trace with hash 356459451, now seen corresponding path program 1 times [2024-05-12 13:28:39,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:28:39,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561782287] [2024-05-12 13:28:39,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:28:39,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:28:39,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:28:40,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:28:40,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:28:40,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561782287] [2024-05-12 13:28:40,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561782287] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:28:40,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:28:40,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 13:28:40,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220445754] [2024-05-12 13:28:40,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:28:40,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 13:28:40,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:28:40,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 13:28:40,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-05-12 13:28:40,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-05-12 13:28:40,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 65 transitions, 304 flow. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:28:40,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:28:40,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-05-12 13:28:40,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:28:41,015 INFO L124 PetriNetUnfolderBase]: 4254/6137 cut-off events. [2024-05-12 13:28:41,015 INFO L125 PetriNetUnfolderBase]: For 5577/5580 co-relation queries the response was YES. [2024-05-12 13:28:41,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17786 conditions, 6137 events. 4254/6137 cut-off events. For 5577/5580 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 33974 event pairs, 989 based on Foata normal form. 12/5882 useless extension candidates. Maximal degree in co-relation 17766. Up to 5845 conditions per place. [2024-05-12 13:28:41,041 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 84 selfloop transitions, 25 changer transitions 0/118 dead transitions. [2024-05-12 13:28:41,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 118 transitions, 680 flow [2024-05-12 13:28:41,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:28:41,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:28:41,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 178 transitions. [2024-05-12 13:28:41,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6312056737588653 [2024-05-12 13:28:41,045 INFO L175 Difference]: Start difference. First operand has 61 places, 65 transitions, 304 flow. Second operand 6 states and 178 transitions. [2024-05-12 13:28:41,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 118 transitions, 680 flow [2024-05-12 13:28:41,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 118 transitions, 668 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-05-12 13:28:41,053 INFO L231 Difference]: Finished difference. Result has 66 places, 68 transitions, 379 flow [2024-05-12 13:28:41,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=379, PETRI_PLACES=66, PETRI_TRANSITIONS=68} [2024-05-12 13:28:41,054 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 13 predicate places. [2024-05-12 13:28:41,054 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 68 transitions, 379 flow [2024-05-12 13:28:41,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:28:41,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:28:41,055 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:28:41,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-05-12 13:28:41,055 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:28:41,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:28:41,056 INFO L85 PathProgramCache]: Analyzing trace with hash 316869563, now seen corresponding path program 1 times [2024-05-12 13:28:41,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:28:41,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207561735] [2024-05-12 13:28:41,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:28:41,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:28:41,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:28:41,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:28:41,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:28:41,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207561735] [2024-05-12 13:28:41,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207561735] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:28:41,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:28:41,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 13:28:41,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944203641] [2024-05-12 13:28:41,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:28:41,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 13:28:41,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:28:41,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 13:28:41,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-05-12 13:28:41,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-05-12 13:28:41,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 68 transitions, 379 flow. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:28:41,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:28:41,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-05-12 13:28:41,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:28:42,391 INFO L124 PetriNetUnfolderBase]: 4101/6098 cut-off events. [2024-05-12 13:28:42,392 INFO L125 PetriNetUnfolderBase]: For 7806/7806 co-relation queries the response was YES. [2024-05-12 13:28:42,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19028 conditions, 6098 events. 4101/6098 cut-off events. For 7806/7806 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 34584 event pairs, 1276 based on Foata normal form. 2/5807 useless extension candidates. Maximal degree in co-relation 19005. Up to 5849 conditions per place. [2024-05-12 13:28:42,420 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 72 selfloop transitions, 10 changer transitions 0/91 dead transitions. [2024-05-12 13:28:42,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 91 transitions, 595 flow [2024-05-12 13:28:42,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 13:28:42,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 13:28:42,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 126 transitions. [2024-05-12 13:28:42,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5361702127659574 [2024-05-12 13:28:42,423 INFO L175 Difference]: Start difference. First operand has 66 places, 68 transitions, 379 flow. Second operand 5 states and 126 transitions. [2024-05-12 13:28:42,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 91 transitions, 595 flow [2024-05-12 13:28:42,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 91 transitions, 526 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-05-12 13:28:42,432 INFO L231 Difference]: Finished difference. Result has 67 places, 68 transitions, 339 flow [2024-05-12 13:28:42,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=339, PETRI_PLACES=67, PETRI_TRANSITIONS=68} [2024-05-12 13:28:42,434 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 14 predicate places. [2024-05-12 13:28:42,434 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 68 transitions, 339 flow [2024-05-12 13:28:42,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:28:42,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:28:42,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:28:42,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-05-12 13:28:42,435 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:28:42,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:28:42,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1187789351, now seen corresponding path program 1 times [2024-05-12 13:28:42,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:28:42,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032904037] [2024-05-12 13:28:42,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:28:42,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:28:42,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:28:43,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:28:43,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:28:43,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032904037] [2024-05-12 13:28:43,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032904037] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:28:43,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:28:43,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:28:43,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083947100] [2024-05-12 13:28:43,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:28:43,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:28:43,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:28:43,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:28:43,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:28:43,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-05-12 13:28:43,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 68 transitions, 339 flow. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:28:43,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:28:43,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-05-12 13:28:43,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:28:43,892 INFO L124 PetriNetUnfolderBase]: 4089/6616 cut-off events. [2024-05-12 13:28:43,892 INFO L125 PetriNetUnfolderBase]: For 8882/8882 co-relation queries the response was YES. [2024-05-12 13:28:43,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19131 conditions, 6616 events. 4089/6616 cut-off events. For 8882/8882 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 41621 event pairs, 1685 based on Foata normal form. 4/6147 useless extension candidates. Maximal degree in co-relation 19106. Up to 5812 conditions per place. [2024-05-12 13:28:43,926 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 82 selfloop transitions, 17 changer transitions 0/108 dead transitions. [2024-05-12 13:28:43,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 108 transitions, 705 flow [2024-05-12 13:28:43,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:28:43,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:28:43,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 147 transitions. [2024-05-12 13:28:43,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5212765957446809 [2024-05-12 13:28:43,928 INFO L175 Difference]: Start difference. First operand has 67 places, 68 transitions, 339 flow. Second operand 6 states and 147 transitions. [2024-05-12 13:28:43,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 108 transitions, 705 flow [2024-05-12 13:28:43,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 108 transitions, 652 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-05-12 13:28:43,935 INFO L231 Difference]: Finished difference. Result has 71 places, 83 transitions, 478 flow [2024-05-12 13:28:43,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=478, PETRI_PLACES=71, PETRI_TRANSITIONS=83} [2024-05-12 13:28:43,937 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 18 predicate places. [2024-05-12 13:28:43,938 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 83 transitions, 478 flow [2024-05-12 13:28:43,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:28:43,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:28:43,938 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:28:43,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-05-12 13:28:43,938 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:28:43,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:28:43,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1186495060, now seen corresponding path program 1 times [2024-05-12 13:28:43,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:28:43,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726202875] [2024-05-12 13:28:43,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:28:43,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:28:43,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:28:44,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:28:44,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:28:44,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726202875] [2024-05-12 13:28:44,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726202875] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:28:44,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:28:44,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 13:28:44,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582130908] [2024-05-12 13:28:44,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:28:44,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 13:28:44,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:28:44,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 13:28:44,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 13:28:44,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 47 [2024-05-12 13:28:44,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 83 transitions, 478 flow. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:28:44,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:28:44,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 47 [2024-05-12 13:28:44,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:28:44,330 INFO L124 PetriNetUnfolderBase]: 1245/2549 cut-off events. [2024-05-12 13:28:44,331 INFO L125 PetriNetUnfolderBase]: For 4510/4838 co-relation queries the response was YES. [2024-05-12 13:28:44,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6620 conditions, 2549 events. 1245/2549 cut-off events. For 4510/4838 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 19068 event pairs, 251 based on Foata normal form. 17/2400 useless extension candidates. Maximal degree in co-relation 6593. Up to 1402 conditions per place. [2024-05-12 13:28:44,347 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 32 selfloop transitions, 11 changer transitions 0/82 dead transitions. [2024-05-12 13:28:44,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 82 transitions, 500 flow [2024-05-12 13:28:44,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 13:28:44,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 13:28:44,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 101 transitions. [2024-05-12 13:28:44,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7163120567375887 [2024-05-12 13:28:44,349 INFO L175 Difference]: Start difference. First operand has 71 places, 83 transitions, 478 flow. Second operand 3 states and 101 transitions. [2024-05-12 13:28:44,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 82 transitions, 500 flow [2024-05-12 13:28:44,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 82 transitions, 486 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-05-12 13:28:44,355 INFO L231 Difference]: Finished difference. Result has 71 places, 73 transitions, 402 flow [2024-05-12 13:28:44,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=402, PETRI_PLACES=71, PETRI_TRANSITIONS=73} [2024-05-12 13:28:44,356 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 18 predicate places. [2024-05-12 13:28:44,356 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 73 transitions, 402 flow [2024-05-12 13:28:44,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:28:44,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:28:44,357 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:28:44,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-05-12 13:28:44,357 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:28:44,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:28:44,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1838955848, now seen corresponding path program 1 times [2024-05-12 13:28:44,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:28:44,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628603139] [2024-05-12 13:28:44,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:28:44,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:28:44,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:28:44,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:28:44,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:28:44,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628603139] [2024-05-12 13:28:44,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628603139] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:28:44,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:28:44,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:28:44,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564697722] [2024-05-12 13:28:44,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:28:44,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:28:44,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:28:44,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:28:44,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:28:45,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:28:45,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 73 transitions, 402 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 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) [2024-05-12 13:28:45,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:28:45,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:28:45,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:28:45,807 INFO L124 PetriNetUnfolderBase]: 4094/6031 cut-off events. [2024-05-12 13:28:45,808 INFO L125 PetriNetUnfolderBase]: For 13130/13139 co-relation queries the response was YES. [2024-05-12 13:28:45,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19087 conditions, 6031 events. 4094/6031 cut-off events. For 13130/13139 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 33231 event pairs, 1322 based on Foata normal form. 10/5999 useless extension candidates. Maximal degree in co-relation 19059. Up to 5694 conditions per place. [2024-05-12 13:28:45,839 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 77 selfloop transitions, 24 changer transitions 4/113 dead transitions. [2024-05-12 13:28:45,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 113 transitions, 748 flow [2024-05-12 13:28:45,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:28:45,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:28:45,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 152 transitions. [2024-05-12 13:28:45,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5390070921985816 [2024-05-12 13:28:45,841 INFO L175 Difference]: Start difference. First operand has 71 places, 73 transitions, 402 flow. Second operand 6 states and 152 transitions. [2024-05-12 13:28:45,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 113 transitions, 748 flow [2024-05-12 13:28:45,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 113 transitions, 724 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-05-12 13:28:45,848 INFO L231 Difference]: Finished difference. Result has 75 places, 75 transitions, 460 flow [2024-05-12 13:28:45,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=460, PETRI_PLACES=75, PETRI_TRANSITIONS=75} [2024-05-12 13:28:45,849 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 22 predicate places. [2024-05-12 13:28:45,849 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 75 transitions, 460 flow [2024-05-12 13:28:45,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 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) [2024-05-12 13:28:45,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:28:45,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:28:45,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-05-12 13:28:45,850 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:28:45,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:28:45,850 INFO L85 PathProgramCache]: Analyzing trace with hash -430979558, now seen corresponding path program 2 times [2024-05-12 13:28:45,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:28:45,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515436487] [2024-05-12 13:28:45,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:28:45,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:28:45,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:28:46,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:28:46,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:28:46,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515436487] [2024-05-12 13:28:46,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515436487] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:28:46,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:28:46,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:28:46,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229799482] [2024-05-12 13:28:46,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:28:46,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:28:46,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:28:46,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:28:46,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:28:46,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:28:46,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 75 transitions, 460 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 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) [2024-05-12 13:28:46,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:28:46,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:28:46,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:28:47,258 INFO L124 PetriNetUnfolderBase]: 3627/5361 cut-off events. [2024-05-12 13:28:47,258 INFO L125 PetriNetUnfolderBase]: For 12519/12519 co-relation queries the response was YES. [2024-05-12 13:28:47,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17289 conditions, 5361 events. 3627/5361 cut-off events. For 12519/12519 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 29276 event pairs, 1197 based on Foata normal form. 2/5318 useless extension candidates. Maximal degree in co-relation 17259. Up to 5055 conditions per place. [2024-05-12 13:28:47,285 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 72 selfloop transitions, 25 changer transitions 0/105 dead transitions. [2024-05-12 13:28:47,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 105 transitions, 728 flow [2024-05-12 13:28:47,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:28:47,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:28:47,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2024-05-12 13:28:47,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2024-05-12 13:28:47,286 INFO L175 Difference]: Start difference. First operand has 75 places, 75 transitions, 460 flow. Second operand 6 states and 144 transitions. [2024-05-12 13:28:47,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 105 transitions, 728 flow [2024-05-12 13:28:47,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 105 transitions, 691 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-05-12 13:28:47,294 INFO L231 Difference]: Finished difference. Result has 77 places, 75 transitions, 482 flow [2024-05-12 13:28:47,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=423, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=482, PETRI_PLACES=77, PETRI_TRANSITIONS=75} [2024-05-12 13:28:47,295 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 24 predicate places. [2024-05-12 13:28:47,295 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 75 transitions, 482 flow [2024-05-12 13:28:47,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 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) [2024-05-12 13:28:47,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:28:47,295 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:28:47,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-05-12 13:28:47,296 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:28:47,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:28:47,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1855042728, now seen corresponding path program 1 times [2024-05-12 13:28:47,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:28:47,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185106420] [2024-05-12 13:28:47,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:28:47,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:28:47,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:28:47,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:28:47,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:28:47,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185106420] [2024-05-12 13:28:47,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185106420] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:28:47,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:28:47,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:28:47,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881625746] [2024-05-12 13:28:47,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:28:47,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:28:47,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:28:47,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:28:47,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:28:47,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:28:47,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 75 transitions, 482 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:28:47,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:28:47,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:28:47,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:28:48,794 INFO L124 PetriNetUnfolderBase]: 3961/6290 cut-off events. [2024-05-12 13:28:48,794 INFO L125 PetriNetUnfolderBase]: For 16467/16467 co-relation queries the response was YES. [2024-05-12 13:28:48,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19988 conditions, 6290 events. 3961/6290 cut-off events. For 16467/16467 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 37747 event pairs, 1230 based on Foata normal form. 8/6110 useless extension candidates. Maximal degree in co-relation 19957. Up to 5133 conditions per place. [2024-05-12 13:28:48,826 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 118 selfloop transitions, 47 changer transitions 0/173 dead transitions. [2024-05-12 13:28:48,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 173 transitions, 1394 flow [2024-05-12 13:28:48,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:28:48,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:28:48,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 202 transitions. [2024-05-12 13:28:48,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5372340425531915 [2024-05-12 13:28:48,828 INFO L175 Difference]: Start difference. First operand has 77 places, 75 transitions, 482 flow. Second operand 8 states and 202 transitions. [2024-05-12 13:28:48,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 173 transitions, 1394 flow [2024-05-12 13:28:48,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 173 transitions, 1207 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-05-12 13:28:48,841 INFO L231 Difference]: Finished difference. Result has 82 places, 110 transitions, 782 flow [2024-05-12 13:28:48,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=782, PETRI_PLACES=82, PETRI_TRANSITIONS=110} [2024-05-12 13:28:48,842 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 29 predicate places. [2024-05-12 13:28:48,842 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 110 transitions, 782 flow [2024-05-12 13:28:48,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:28:48,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:28:48,842 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:28:48,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-05-12 13:28:48,842 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:28:48,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:28:48,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1173054680, now seen corresponding path program 2 times [2024-05-12 13:28:48,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:28:48,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616367084] [2024-05-12 13:28:48,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:28:48,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:28:48,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:28:49,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:28:49,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:28:49,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616367084] [2024-05-12 13:28:49,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616367084] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:28:49,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:28:49,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:28:49,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234736581] [2024-05-12 13:28:49,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:28:49,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:28:49,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:28:49,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:28:49,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:28:49,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:28:49,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 110 transitions, 782 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:28:49,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:28:49,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:28:49,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:28:50,565 INFO L124 PetriNetUnfolderBase]: 4113/6512 cut-off events. [2024-05-12 13:28:50,565 INFO L125 PetriNetUnfolderBase]: For 21615/21617 co-relation queries the response was YES. [2024-05-12 13:28:50,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23049 conditions, 6512 events. 4113/6512 cut-off events. For 21615/21617 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 38964 event pairs, 1252 based on Foata normal form. 12/6336 useless extension candidates. Maximal degree in co-relation 23014. Up to 5237 conditions per place. [2024-05-12 13:28:50,630 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 105 selfloop transitions, 59 changer transitions 0/172 dead transitions. [2024-05-12 13:28:50,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 172 transitions, 1437 flow [2024-05-12 13:28:50,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:28:50,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:28:50,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-05-12 13:28:50,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5258358662613982 [2024-05-12 13:28:50,644 INFO L175 Difference]: Start difference. First operand has 82 places, 110 transitions, 782 flow. Second operand 7 states and 173 transitions. [2024-05-12 13:28:50,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 172 transitions, 1437 flow [2024-05-12 13:28:50,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 172 transitions, 1377 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-05-12 13:28:50,678 INFO L231 Difference]: Finished difference. Result has 88 places, 125 transitions, 1042 flow [2024-05-12 13:28:50,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=730, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1042, PETRI_PLACES=88, PETRI_TRANSITIONS=125} [2024-05-12 13:28:50,678 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 35 predicate places. [2024-05-12 13:28:50,678 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 125 transitions, 1042 flow [2024-05-12 13:28:50,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:28:50,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:28:50,680 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:28:50,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-05-12 13:28:50,680 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:28:50,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:28:50,680 INFO L85 PathProgramCache]: Analyzing trace with hash -437032260, now seen corresponding path program 3 times [2024-05-12 13:28:50,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:28:50,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380022303] [2024-05-12 13:28:50,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:28:50,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:28:50,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:28:51,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:28:51,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:28:51,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380022303] [2024-05-12 13:28:51,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380022303] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:28:51,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:28:51,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:28:51,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685702639] [2024-05-12 13:28:51,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:28:51,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:28:51,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:28:51,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:28:51,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:28:51,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:28:51,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 125 transitions, 1042 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:28:51,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:28:51,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:28:51,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:28:52,676 INFO L124 PetriNetUnfolderBase]: 4189/6604 cut-off events. [2024-05-12 13:28:52,677 INFO L125 PetriNetUnfolderBase]: For 26119/26121 co-relation queries the response was YES. [2024-05-12 13:28:52,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24938 conditions, 6604 events. 4189/6604 cut-off events. For 26119/26121 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 39183 event pairs, 1275 based on Foata normal form. 6/6418 useless extension candidates. Maximal degree in co-relation 24900. Up to 5275 conditions per place. [2024-05-12 13:28:52,737 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 105 selfloop transitions, 73 changer transitions 0/186 dead transitions. [2024-05-12 13:28:52,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 186 transitions, 1801 flow [2024-05-12 13:28:52,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:28:52,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:28:52,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2024-05-12 13:28:52,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5288753799392097 [2024-05-12 13:28:52,739 INFO L175 Difference]: Start difference. First operand has 88 places, 125 transitions, 1042 flow. Second operand 7 states and 174 transitions. [2024-05-12 13:28:52,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 186 transitions, 1801 flow [2024-05-12 13:28:52,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 186 transitions, 1677 flow, removed 27 selfloop flow, removed 3 redundant places. [2024-05-12 13:28:52,772 INFO L231 Difference]: Finished difference. Result has 93 places, 141 transitions, 1280 flow [2024-05-12 13:28:52,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=942, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1280, PETRI_PLACES=93, PETRI_TRANSITIONS=141} [2024-05-12 13:28:52,773 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 40 predicate places. [2024-05-12 13:28:52,773 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 141 transitions, 1280 flow [2024-05-12 13:28:52,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:28:52,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:28:52,773 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:28:52,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-05-12 13:28:52,773 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:28:52,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:28:52,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1860507000, now seen corresponding path program 4 times [2024-05-12 13:28:52,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:28:52,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948073720] [2024-05-12 13:28:52,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:28:52,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:28:52,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:28:53,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:28:53,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:28:53,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948073720] [2024-05-12 13:28:53,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948073720] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:28:53,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:28:53,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:28:53,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990410864] [2024-05-12 13:28:53,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:28:53,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:28:53,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:28:53,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:28:53,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:28:53,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:28:53,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 141 transitions, 1280 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:28:53,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:28:53,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:28:53,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:28:54,427 INFO L124 PetriNetUnfolderBase]: 4173/6580 cut-off events. [2024-05-12 13:28:54,428 INFO L125 PetriNetUnfolderBase]: For 26492/26494 co-relation queries the response was YES. [2024-05-12 13:28:54,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24775 conditions, 6580 events. 4173/6580 cut-off events. For 26492/26494 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 39114 event pairs, 1245 based on Foata normal form. 6/6393 useless extension candidates. Maximal degree in co-relation 24735. Up to 5268 conditions per place. [2024-05-12 13:28:54,523 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 101 selfloop transitions, 77 changer transitions 0/186 dead transitions. [2024-05-12 13:28:54,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 186 transitions, 1840 flow [2024-05-12 13:28:54,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:28:54,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:28:54,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 171 transitions. [2024-05-12 13:28:54,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5197568389057751 [2024-05-12 13:28:54,528 INFO L175 Difference]: Start difference. First operand has 93 places, 141 transitions, 1280 flow. Second operand 7 states and 171 transitions. [2024-05-12 13:28:54,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 186 transitions, 1840 flow [2024-05-12 13:28:54,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 186 transitions, 1747 flow, removed 27 selfloop flow, removed 2 redundant places. [2024-05-12 13:28:54,563 INFO L231 Difference]: Finished difference. Result has 98 places, 143 transitions, 1373 flow [2024-05-12 13:28:54,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1187, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1373, PETRI_PLACES=98, PETRI_TRANSITIONS=143} [2024-05-12 13:28:54,564 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 45 predicate places. [2024-05-12 13:28:54,564 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 143 transitions, 1373 flow [2024-05-12 13:28:54,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:28:54,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:28:54,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:28:54,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-05-12 13:28:54,565 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:28:54,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:28:54,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1860498072, now seen corresponding path program 1 times [2024-05-12 13:28:54,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:28:54,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747074758] [2024-05-12 13:28:54,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:28:54,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:28:54,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:28:55,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:28:55,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:28:55,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747074758] [2024-05-12 13:28:55,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747074758] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:28:55,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:28:55,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:28:55,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507205455] [2024-05-12 13:28:55,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:28:55,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:28:55,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:28:55,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:28:55,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:28:55,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-05-12 13:28:55,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 143 transitions, 1373 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:28:55,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:28:55,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-05-12 13:28:55,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:28:56,437 INFO L124 PetriNetUnfolderBase]: 3563/5806 cut-off events. [2024-05-12 13:28:56,437 INFO L125 PetriNetUnfolderBase]: For 25217/25219 co-relation queries the response was YES. [2024-05-12 13:28:56,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22564 conditions, 5806 events. 3563/5806 cut-off events. For 25217/25219 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 35302 event pairs, 1108 based on Foata normal form. 4/5655 useless extension candidates. Maximal degree in co-relation 22521. Up to 5033 conditions per place. [2024-05-12 13:28:56,470 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 153 selfloop transitions, 17 changer transitions 0/179 dead transitions. [2024-05-12 13:28:56,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 179 transitions, 1833 flow [2024-05-12 13:28:56,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:28:56,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:28:56,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 165 transitions. [2024-05-12 13:28:56,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5015197568389058 [2024-05-12 13:28:56,472 INFO L175 Difference]: Start difference. First operand has 98 places, 143 transitions, 1373 flow. Second operand 7 states and 165 transitions. [2024-05-12 13:28:56,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 179 transitions, 1833 flow [2024-05-12 13:28:56,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 179 transitions, 1708 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-05-12 13:28:56,502 INFO L231 Difference]: Finished difference. Result has 101 places, 146 transitions, 1322 flow [2024-05-12 13:28:56,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1248, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1322, PETRI_PLACES=101, PETRI_TRANSITIONS=146} [2024-05-12 13:28:56,502 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 48 predicate places. [2024-05-12 13:28:56,502 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 146 transitions, 1322 flow [2024-05-12 13:28:56,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:28:56,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:28:56,503 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:28:56,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-05-12 13:28:56,503 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:28:56,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:28:56,503 INFO L85 PathProgramCache]: Analyzing trace with hash 2055382523, now seen corresponding path program 1 times [2024-05-12 13:28:56,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:28:56,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726858912] [2024-05-12 13:28:56,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:28:56,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:28:56,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:28:57,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:28:57,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:28:57,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726858912] [2024-05-12 13:28:57,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726858912] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:28:57,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:28:57,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 13:28:57,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699532136] [2024-05-12 13:28:57,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:28:57,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 13:28:57,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:28:57,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 13:28:57,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-05-12 13:28:57,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-05-12 13:28:57,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 146 transitions, 1322 flow. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:28:57,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:28:57,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-05-12 13:28:57,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:28:57,808 INFO L124 PetriNetUnfolderBase]: 3568/5801 cut-off events. [2024-05-12 13:28:57,808 INFO L125 PetriNetUnfolderBase]: For 26729/26731 co-relation queries the response was YES. [2024-05-12 13:28:57,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22586 conditions, 5801 events. 3568/5801 cut-off events. For 26729/26731 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 35155 event pairs, 1342 based on Foata normal form. 1/5646 useless extension candidates. Maximal degree in co-relation 22542. Up to 5106 conditions per place. [2024-05-12 13:28:57,845 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 150 selfloop transitions, 9 changer transitions 0/168 dead transitions. [2024-05-12 13:28:57,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 168 transitions, 1753 flow [2024-05-12 13:28:57,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 13:28:57,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 13:28:57,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 114 transitions. [2024-05-12 13:28:57,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4851063829787234 [2024-05-12 13:28:57,847 INFO L175 Difference]: Start difference. First operand has 101 places, 146 transitions, 1322 flow. Second operand 5 states and 114 transitions. [2024-05-12 13:28:57,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 168 transitions, 1753 flow [2024-05-12 13:28:57,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 168 transitions, 1697 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-05-12 13:28:57,878 INFO L231 Difference]: Finished difference. Result has 102 places, 153 transitions, 1376 flow [2024-05-12 13:28:57,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1272, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1376, PETRI_PLACES=102, PETRI_TRANSITIONS=153} [2024-05-12 13:28:57,879 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 49 predicate places. [2024-05-12 13:28:57,879 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 153 transitions, 1376 flow [2024-05-12 13:28:57,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:28:57,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:28:57,879 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:28:57,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-05-12 13:28:57,880 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:28:57,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:28:57,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1595661036, now seen corresponding path program 1 times [2024-05-12 13:28:57,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:28:57,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111214009] [2024-05-12 13:28:57,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:28:57,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:28:57,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:28:58,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:28:58,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:28:58,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111214009] [2024-05-12 13:28:58,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111214009] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:28:58,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:28:58,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:28:58,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440807509] [2024-05-12 13:28:58,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:28:58,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:28:58,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:28:58,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:28:58,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:28:58,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:28:58,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 153 transitions, 1376 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:28:58,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:28:58,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:28:58,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:28:59,470 INFO L124 PetriNetUnfolderBase]: 4259/6751 cut-off events. [2024-05-12 13:28:59,470 INFO L125 PetriNetUnfolderBase]: For 35662/35668 co-relation queries the response was YES. [2024-05-12 13:28:59,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27163 conditions, 6751 events. 4259/6751 cut-off events. For 35662/35668 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 40585 event pairs, 1294 based on Foata normal form. 14/6575 useless extension candidates. Maximal degree in co-relation 27117. Up to 5342 conditions per place. [2024-05-12 13:28:59,516 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 117 selfloop transitions, 86 changer transitions 0/211 dead transitions. [2024-05-12 13:28:59,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 211 transitions, 2114 flow [2024-05-12 13:28:59,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:28:59,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:28:59,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2024-05-12 13:28:59,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5379939209726444 [2024-05-12 13:28:59,519 INFO L175 Difference]: Start difference. First operand has 102 places, 153 transitions, 1376 flow. Second operand 7 states and 177 transitions. [2024-05-12 13:28:59,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 211 transitions, 2114 flow [2024-05-12 13:28:59,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 211 transitions, 2091 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-05-12 13:28:59,558 INFO L231 Difference]: Finished difference. Result has 109 places, 165 transitions, 1750 flow [2024-05-12 13:28:59,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1353, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1750, PETRI_PLACES=109, PETRI_TRANSITIONS=165} [2024-05-12 13:28:59,558 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 56 predicate places. [2024-05-12 13:28:59,558 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 165 transitions, 1750 flow [2024-05-12 13:28:59,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:28:59,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:28:59,559 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:28:59,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-05-12 13:28:59,559 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:28:59,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:28:59,559 INFO L85 PathProgramCache]: Analyzing trace with hash -2004955138, now seen corresponding path program 2 times [2024-05-12 13:28:59,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:28:59,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88983385] [2024-05-12 13:28:59,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:28:59,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:28:59,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:29:00,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:29:00,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:29:00,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88983385] [2024-05-12 13:29:00,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88983385] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:29:00,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:29:00,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:29:00,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833251947] [2024-05-12 13:29:00,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:29:00,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:29:00,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:29:00,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:29:00,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:29:00,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:29:00,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 165 transitions, 1750 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:29:00,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:29:00,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:29:00,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:29:01,419 INFO L124 PetriNetUnfolderBase]: 4331/6845 cut-off events. [2024-05-12 13:29:01,420 INFO L125 PetriNetUnfolderBase]: For 42256/42258 co-relation queries the response was YES. [2024-05-12 13:29:01,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29428 conditions, 6845 events. 4331/6845 cut-off events. For 42256/42258 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 41077 event pairs, 1264 based on Foata normal form. 8/6665 useless extension candidates. Maximal degree in co-relation 29378. Up to 5405 conditions per place. [2024-05-12 13:29:01,455 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 118 selfloop transitions, 90 changer transitions 0/216 dead transitions. [2024-05-12 13:29:01,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 216 transitions, 2484 flow [2024-05-12 13:29:01,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:29:01,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:29:01,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-05-12 13:29:01,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5258358662613982 [2024-05-12 13:29:01,458 INFO L175 Difference]: Start difference. First operand has 109 places, 165 transitions, 1750 flow. Second operand 7 states and 173 transitions. [2024-05-12 13:29:01,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 216 transitions, 2484 flow [2024-05-12 13:29:01,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 216 transitions, 2363 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-05-12 13:29:01,496 INFO L231 Difference]: Finished difference. Result has 113 places, 173 transitions, 1948 flow [2024-05-12 13:29:01,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1637, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1948, PETRI_PLACES=113, PETRI_TRANSITIONS=173} [2024-05-12 13:29:01,502 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 60 predicate places. [2024-05-12 13:29:01,502 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 173 transitions, 1948 flow [2024-05-12 13:29:01,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:29:01,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:29:01,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:29:01,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-05-12 13:29:01,503 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:29:01,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:29:01,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1847087038, now seen corresponding path program 3 times [2024-05-12 13:29:01,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:29:01,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50904347] [2024-05-12 13:29:01,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:29:01,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:29:01,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:29:02,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:29:02,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:29:02,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50904347] [2024-05-12 13:29:02,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50904347] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:29:02,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:29:02,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:29:02,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819899872] [2024-05-12 13:29:02,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:29:02,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:29:02,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:29:02,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:29:02,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:29:02,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:29:02,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 173 transitions, 1948 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:29:02,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:29:02,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:29:02,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:29:03,217 INFO L124 PetriNetUnfolderBase]: 4315/6827 cut-off events. [2024-05-12 13:29:03,218 INFO L125 PetriNetUnfolderBase]: For 46220/46228 co-relation queries the response was YES. [2024-05-12 13:29:03,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29481 conditions, 6827 events. 4315/6827 cut-off events. For 46220/46228 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 41089 event pairs, 1281 based on Foata normal form. 10/6642 useless extension candidates. Maximal degree in co-relation 29430. Up to 5392 conditions per place. [2024-05-12 13:29:03,258 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 117 selfloop transitions, 88 changer transitions 0/213 dead transitions. [2024-05-12 13:29:03,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 213 transitions, 2516 flow [2024-05-12 13:29:03,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:29:03,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:29:03,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 166 transitions. [2024-05-12 13:29:03,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5045592705167173 [2024-05-12 13:29:03,260 INFO L175 Difference]: Start difference. First operand has 113 places, 173 transitions, 1948 flow. Second operand 7 states and 166 transitions. [2024-05-12 13:29:03,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 213 transitions, 2516 flow [2024-05-12 13:29:03,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 213 transitions, 2340 flow, removed 24 selfloop flow, removed 4 redundant places. [2024-05-12 13:29:03,315 INFO L231 Difference]: Finished difference. Result has 116 places, 175 transitions, 1987 flow [2024-05-12 13:29:03,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1774, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1987, PETRI_PLACES=116, PETRI_TRANSITIONS=175} [2024-05-12 13:29:03,315 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 63 predicate places. [2024-05-12 13:29:03,315 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 175 transitions, 1987 flow [2024-05-12 13:29:03,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:29:03,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:29:03,316 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:29:03,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-05-12 13:29:03,316 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:29:03,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:29:03,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1449303273, now seen corresponding path program 1 times [2024-05-12 13:29:03,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:29:03,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409934201] [2024-05-12 13:29:03,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:29:03,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:29:03,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:29:04,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:29:04,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:29:04,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409934201] [2024-05-12 13:29:04,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409934201] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:29:04,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:29:04,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:29:04,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717761402] [2024-05-12 13:29:04,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:29:04,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:29:04,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:29:04,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:29:04,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:29:04,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:29:04,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 175 transitions, 1987 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:29:04,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:29:04,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:29:04,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:29:05,132 INFO L124 PetriNetUnfolderBase]: 4357/6880 cut-off events. [2024-05-12 13:29:05,132 INFO L125 PetriNetUnfolderBase]: For 49816/49824 co-relation queries the response was YES. [2024-05-12 13:29:05,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29801 conditions, 6880 events. 4357/6880 cut-off events. For 49816/49824 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 41291 event pairs, 1018 based on Foata normal form. 8/6702 useless extension candidates. Maximal degree in co-relation 29749. Up to 5745 conditions per place. [2024-05-12 13:29:05,177 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 168 selfloop transitions, 48 changer transitions 0/224 dead transitions. [2024-05-12 13:29:05,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 224 transitions, 2669 flow [2024-05-12 13:29:05,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:29:05,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:29:05,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 171 transitions. [2024-05-12 13:29:05,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5197568389057751 [2024-05-12 13:29:05,178 INFO L175 Difference]: Start difference. First operand has 116 places, 175 transitions, 1987 flow. Second operand 7 states and 171 transitions. [2024-05-12 13:29:05,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 224 transitions, 2669 flow [2024-05-12 13:29:05,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 224 transitions, 2528 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-05-12 13:29:05,241 INFO L231 Difference]: Finished difference. Result has 119 places, 179 transitions, 1997 flow [2024-05-12 13:29:05,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1846, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1997, PETRI_PLACES=119, PETRI_TRANSITIONS=179} [2024-05-12 13:29:05,241 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 66 predicate places. [2024-05-12 13:29:05,241 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 179 transitions, 1997 flow [2024-05-12 13:29:05,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:29:05,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:29:05,242 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:29:05,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-05-12 13:29:05,242 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:29:05,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:29:05,243 INFO L85 PathProgramCache]: Analyzing trace with hash -2139534453, now seen corresponding path program 2 times [2024-05-12 13:29:05,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:29:05,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076092328] [2024-05-12 13:29:05,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:29:05,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:29:05,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:29:05,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:29:05,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:29:05,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076092328] [2024-05-12 13:29:05,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076092328] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:29:05,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:29:05,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:29:05,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008864610] [2024-05-12 13:29:05,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:29:05,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:29:05,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:29:05,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:29:05,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:29:05,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:29:05,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 179 transitions, 1997 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:29:05,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:29:05,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:29:05,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:29:06,974 INFO L124 PetriNetUnfolderBase]: 4349/6875 cut-off events. [2024-05-12 13:29:06,974 INFO L125 PetriNetUnfolderBase]: For 52691/52699 co-relation queries the response was YES. [2024-05-12 13:29:06,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29865 conditions, 6875 events. 4349/6875 cut-off events. For 52691/52699 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 41263 event pairs, 1330 based on Foata normal form. 8/6693 useless extension candidates. Maximal degree in co-relation 29811. Up to 5892 conditions per place. [2024-05-12 13:29:07,020 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 162 selfloop transitions, 52 changer transitions 0/222 dead transitions. [2024-05-12 13:29:07,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 222 transitions, 2569 flow [2024-05-12 13:29:07,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:29:07,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:29:07,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-05-12 13:29:07,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.513677811550152 [2024-05-12 13:29:07,021 INFO L175 Difference]: Start difference. First operand has 119 places, 179 transitions, 1997 flow. Second operand 7 states and 169 transitions. [2024-05-12 13:29:07,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 222 transitions, 2569 flow [2024-05-12 13:29:07,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 222 transitions, 2498 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-05-12 13:29:07,087 INFO L231 Difference]: Finished difference. Result has 123 places, 179 transitions, 2040 flow [2024-05-12 13:29:07,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1926, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2040, PETRI_PLACES=123, PETRI_TRANSITIONS=179} [2024-05-12 13:29:07,088 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 70 predicate places. [2024-05-12 13:29:07,088 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 179 transitions, 2040 flow [2024-05-12 13:29:07,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:29:07,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:29:07,088 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:29:07,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-05-12 13:29:07,089 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:29:07,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:29:07,089 INFO L85 PathProgramCache]: Analyzing trace with hash 2074296965, now seen corresponding path program 1 times [2024-05-12 13:29:07,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:29:07,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232920190] [2024-05-12 13:29:07,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:29:07,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:29:07,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:29:08,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:29:08,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:29:08,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232920190] [2024-05-12 13:29:08,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232920190] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:29:08,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:29:08,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:29:08,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680629194] [2024-05-12 13:29:08,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:29:08,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:29:08,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:29:08,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:29:08,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:29:08,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:29:08,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 179 transitions, 2040 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:29:08,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:29:08,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:29:08,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:29:09,361 INFO L124 PetriNetUnfolderBase]: 4537/7158 cut-off events. [2024-05-12 13:29:09,362 INFO L125 PetriNetUnfolderBase]: For 61183/61185 co-relation queries the response was YES. [2024-05-12 13:29:09,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31492 conditions, 7158 events. 4537/7158 cut-off events. For 61183/61185 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 43073 event pairs, 1186 based on Foata normal form. 24/6990 useless extension candidates. Maximal degree in co-relation 31436. Up to 5442 conditions per place. [2024-05-12 13:29:09,412 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 128 selfloop transitions, 98 changer transitions 0/234 dead transitions. [2024-05-12 13:29:09,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 234 transitions, 2700 flow [2024-05-12 13:29:09,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:29:09,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:29:09,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-05-12 13:29:09,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.523936170212766 [2024-05-12 13:29:09,414 INFO L175 Difference]: Start difference. First operand has 123 places, 179 transitions, 2040 flow. Second operand 8 states and 197 transitions. [2024-05-12 13:29:09,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 234 transitions, 2700 flow [2024-05-12 13:29:09,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 234 transitions, 2586 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-05-12 13:29:09,485 INFO L231 Difference]: Finished difference. Result has 125 places, 182 transitions, 2175 flow [2024-05-12 13:29:09,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1926, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2175, PETRI_PLACES=125, PETRI_TRANSITIONS=182} [2024-05-12 13:29:09,485 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 72 predicate places. [2024-05-12 13:29:09,485 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 182 transitions, 2175 flow [2024-05-12 13:29:09,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:29:09,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:29:09,486 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:29:09,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-05-12 13:29:09,486 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:29:09,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:29:09,486 INFO L85 PathProgramCache]: Analyzing trace with hash 55606018, now seen corresponding path program 1 times [2024-05-12 13:29:09,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:29:09,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771177947] [2024-05-12 13:29:09,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:29:09,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:29:09,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:29:10,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:29:10,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:29:10,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771177947] [2024-05-12 13:29:10,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771177947] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:29:10,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:29:10,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:29:10,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280817784] [2024-05-12 13:29:10,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:29:10,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:29:10,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:29:10,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:29:10,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:29:10,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:29:10,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 182 transitions, 2175 flow. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:29:10,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:29:10,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:29:10,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:29:11,071 INFO L124 PetriNetUnfolderBase]: 4557/7202 cut-off events. [2024-05-12 13:29:11,071 INFO L125 PetriNetUnfolderBase]: For 65516/65522 co-relation queries the response was YES. [2024-05-12 13:29:11,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32893 conditions, 7202 events. 4557/7202 cut-off events. For 65516/65522 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 43206 event pairs, 1580 based on Foata normal form. 7/7019 useless extension candidates. Maximal degree in co-relation 32836. Up to 6478 conditions per place. [2024-05-12 13:29:11,123 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 194 selfloop transitions, 15 changer transitions 0/217 dead transitions. [2024-05-12 13:29:11,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 217 transitions, 2800 flow [2024-05-12 13:29:11,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:29:11,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:29:11,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 134 transitions. [2024-05-12 13:29:11,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.475177304964539 [2024-05-12 13:29:11,125 INFO L175 Difference]: Start difference. First operand has 125 places, 182 transitions, 2175 flow. Second operand 6 states and 134 transitions. [2024-05-12 13:29:11,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 217 transitions, 2800 flow [2024-05-12 13:29:11,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 217 transitions, 2585 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-05-12 13:29:11,224 INFO L231 Difference]: Finished difference. Result has 126 places, 191 transitions, 2137 flow [2024-05-12 13:29:11,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1968, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2137, PETRI_PLACES=126, PETRI_TRANSITIONS=191} [2024-05-12 13:29:11,225 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 73 predicate places. [2024-05-12 13:29:11,225 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 191 transitions, 2137 flow [2024-05-12 13:29:11,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:29:11,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:29:11,225 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:29:11,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-05-12 13:29:11,226 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:29:11,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:29:11,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1468675671, now seen corresponding path program 2 times [2024-05-12 13:29:11,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:29:11,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497622810] [2024-05-12 13:29:11,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:29:11,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:29:11,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:29:12,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:29:12,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:29:12,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497622810] [2024-05-12 13:29:12,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497622810] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:29:12,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:29:12,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:29:12,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835737287] [2024-05-12 13:29:12,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:29:12,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:29:12,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:29:12,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:29:12,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:29:12,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:29:12,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 191 transitions, 2137 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:29:12,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:29:12,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:29:12,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:29:13,566 INFO L124 PetriNetUnfolderBase]: 4591/7224 cut-off events. [2024-05-12 13:29:13,566 INFO L125 PetriNetUnfolderBase]: For 66949/66951 co-relation queries the response was YES. [2024-05-12 13:29:13,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33244 conditions, 7224 events. 4591/7224 cut-off events. For 66949/66951 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 43269 event pairs, 1292 based on Foata normal form. 4/7028 useless extension candidates. Maximal degree in co-relation 33185. Up to 5767 conditions per place. [2024-05-12 13:29:13,616 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 129 selfloop transitions, 104 changer transitions 0/241 dead transitions. [2024-05-12 13:29:13,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 241 transitions, 2813 flow [2024-05-12 13:29:13,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:29:13,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:29:13,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-05-12 13:29:13,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2024-05-12 13:29:13,620 INFO L175 Difference]: Start difference. First operand has 126 places, 191 transitions, 2137 flow. Second operand 8 states and 192 transitions. [2024-05-12 13:29:13,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 241 transitions, 2813 flow [2024-05-12 13:29:13,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 241 transitions, 2775 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-05-12 13:29:13,709 INFO L231 Difference]: Finished difference. Result has 131 places, 194 transitions, 2364 flow [2024-05-12 13:29:13,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2099, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2364, PETRI_PLACES=131, PETRI_TRANSITIONS=194} [2024-05-12 13:29:13,710 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 78 predicate places. [2024-05-12 13:29:13,710 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 194 transitions, 2364 flow [2024-05-12 13:29:13,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:29:13,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:29:13,711 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:29:13,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-05-12 13:29:13,711 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:29:13,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:29:13,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1232500311, now seen corresponding path program 3 times [2024-05-12 13:29:13,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:29:13,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734910897] [2024-05-12 13:29:13,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:29:13,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:29:13,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:29:14,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:29:14,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:29:14,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734910897] [2024-05-12 13:29:14,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734910897] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:29:14,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:29:14,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:29:14,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679759545] [2024-05-12 13:29:14,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:29:14,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:29:14,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:29:14,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:29:14,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:29:14,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:29:14,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 194 transitions, 2364 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:29:14,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:29:14,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:29:14,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:29:15,938 INFO L124 PetriNetUnfolderBase]: 4625/7272 cut-off events. [2024-05-12 13:29:15,938 INFO L125 PetriNetUnfolderBase]: For 77642/77644 co-relation queries the response was YES. [2024-05-12 13:29:15,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35058 conditions, 7272 events. 4625/7272 cut-off events. For 77642/77644 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 43513 event pairs, 1267 based on Foata normal form. 4/7074 useless extension candidates. Maximal degree in co-relation 34998. Up to 5817 conditions per place. [2024-05-12 13:29:15,984 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 130 selfloop transitions, 106 changer transitions 0/244 dead transitions. [2024-05-12 13:29:15,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 244 transitions, 3054 flow [2024-05-12 13:29:15,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:29:15,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:29:15,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2024-05-12 13:29:15,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5079787234042553 [2024-05-12 13:29:15,985 INFO L175 Difference]: Start difference. First operand has 131 places, 194 transitions, 2364 flow. Second operand 8 states and 191 transitions. [2024-05-12 13:29:15,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 244 transitions, 3054 flow [2024-05-12 13:29:16,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 244 transitions, 2815 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-05-12 13:29:16,068 INFO L231 Difference]: Finished difference. Result has 133 places, 197 transitions, 2400 flow [2024-05-12 13:29:16,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2125, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2400, PETRI_PLACES=133, PETRI_TRANSITIONS=197} [2024-05-12 13:29:16,069 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 80 predicate places. [2024-05-12 13:29:16,069 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 197 transitions, 2400 flow [2024-05-12 13:29:16,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:29:16,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:29:16,070 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:29:16,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-05-12 13:29:16,070 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:29:16,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:29:16,070 INFO L85 PathProgramCache]: Analyzing trace with hash 932079621, now seen corresponding path program 4 times [2024-05-12 13:29:16,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:29:16,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981039948] [2024-05-12 13:29:16,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:29:16,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:29:16,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:29:16,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:29:16,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:29:16,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981039948] [2024-05-12 13:29:16,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981039948] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:29:16,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:29:16,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:29:16,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436834628] [2024-05-12 13:29:16,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:29:16,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:29:16,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:29:16,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:29:16,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:29:17,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:29:17,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 197 transitions, 2400 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:29:17,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:29:17,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:29:17,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:29:18,076 INFO L124 PetriNetUnfolderBase]: 4617/7134 cut-off events. [2024-05-12 13:29:18,076 INFO L125 PetriNetUnfolderBase]: For 83318/83320 co-relation queries the response was YES. [2024-05-12 13:29:18,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35390 conditions, 7134 events. 4617/7134 cut-off events. For 83318/83320 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 42148 event pairs, 1145 based on Foata normal form. 4/6978 useless extension candidates. Maximal degree in co-relation 35329. Up to 5417 conditions per place. [2024-05-12 13:29:18,123 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 125 selfloop transitions, 117 changer transitions 0/250 dead transitions. [2024-05-12 13:29:18,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 250 transitions, 3116 flow [2024-05-12 13:29:18,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:29:18,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:29:18,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-05-12 13:29:18,127 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5186170212765957 [2024-05-12 13:29:18,127 INFO L175 Difference]: Start difference. First operand has 133 places, 197 transitions, 2400 flow. Second operand 8 states and 195 transitions. [2024-05-12 13:29:18,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 250 transitions, 3116 flow [2024-05-12 13:29:18,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 250 transitions, 2867 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-05-12 13:29:18,225 INFO L231 Difference]: Finished difference. Result has 135 places, 200 transitions, 2453 flow [2024-05-12 13:29:18,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2151, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2453, PETRI_PLACES=135, PETRI_TRANSITIONS=200} [2024-05-12 13:29:18,225 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 82 predicate places. [2024-05-12 13:29:18,225 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 200 transitions, 2453 flow [2024-05-12 13:29:18,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:29:18,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:29:18,226 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:29:18,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-05-12 13:29:18,226 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:29:18,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:29:18,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1819892452, now seen corresponding path program 2 times [2024-05-12 13:29:18,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:29:18,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988109136] [2024-05-12 13:29:18,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:29:18,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:29:18,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:29:18,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:29:18,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:29:18,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988109136] [2024-05-12 13:29:18,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988109136] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:29:18,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:29:18,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:29:18,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959549744] [2024-05-12 13:29:18,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:29:18,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:29:18,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:29:18,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:29:18,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:29:18,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:29:18,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 200 transitions, 2453 flow. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:29:18,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:29:18,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:29:18,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:29:19,763 INFO L124 PetriNetUnfolderBase]: 4622/7173 cut-off events. [2024-05-12 13:29:19,763 INFO L125 PetriNetUnfolderBase]: For 88955/88979 co-relation queries the response was YES. [2024-05-12 13:29:19,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36117 conditions, 7173 events. 4622/7173 cut-off events. For 88955/88979 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 42271 event pairs, 1584 based on Foata normal form. 21/7045 useless extension candidates. Maximal degree in co-relation 36055. Up to 6550 conditions per place. [2024-05-12 13:29:19,814 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 202 selfloop transitions, 20 changer transitions 0/230 dead transitions. [2024-05-12 13:29:19,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 230 transitions, 3055 flow [2024-05-12 13:29:19,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:29:19,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:29:19,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 132 transitions. [2024-05-12 13:29:19,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46808510638297873 [2024-05-12 13:29:19,816 INFO L175 Difference]: Start difference. First operand has 135 places, 200 transitions, 2453 flow. Second operand 6 states and 132 transitions. [2024-05-12 13:29:19,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 230 transitions, 3055 flow [2024-05-12 13:29:19,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 230 transitions, 2777 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-05-12 13:29:19,952 INFO L231 Difference]: Finished difference. Result has 136 places, 206 transitions, 2292 flow [2024-05-12 13:29:19,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2175, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2292, PETRI_PLACES=136, PETRI_TRANSITIONS=206} [2024-05-12 13:29:19,953 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 83 predicate places. [2024-05-12 13:29:19,953 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 206 transitions, 2292 flow [2024-05-12 13:29:19,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:29:19,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:29:19,953 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:29:19,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-05-12 13:29:19,954 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:29:19,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:29:19,954 INFO L85 PathProgramCache]: Analyzing trace with hash -2099656596, now seen corresponding path program 1 times [2024-05-12 13:29:19,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:29:19,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773576318] [2024-05-12 13:29:19,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:29:19,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:29:19,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:29:20,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:29:20,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:29:20,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773576318] [2024-05-12 13:29:20,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773576318] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:29:20,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:29:20,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:29:20,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997391051] [2024-05-12 13:29:20,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:29:20,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:29:20,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:29:20,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:29:20,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:29:20,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-05-12 13:29:20,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 206 transitions, 2292 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:29:20,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:29:20,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-05-12 13:29:20,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:29:21,537 INFO L124 PetriNetUnfolderBase]: 4324/6878 cut-off events. [2024-05-12 13:29:21,537 INFO L125 PetriNetUnfolderBase]: For 92894/92896 co-relation queries the response was YES. [2024-05-12 13:29:21,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34819 conditions, 6878 events. 4324/6878 cut-off events. For 92894/92896 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 41993 event pairs, 1429 based on Foata normal form. 2/6702 useless extension candidates. Maximal degree in co-relation 34755. Up to 6105 conditions per place. [2024-05-12 13:29:21,589 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 209 selfloop transitions, 13 changer transitions 0/234 dead transitions. [2024-05-12 13:29:21,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 234 transitions, 2887 flow [2024-05-12 13:29:21,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:29:21,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:29:21,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 136 transitions. [2024-05-12 13:29:21,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48226950354609927 [2024-05-12 13:29:21,591 INFO L175 Difference]: Start difference. First operand has 136 places, 206 transitions, 2292 flow. Second operand 6 states and 136 transitions. [2024-05-12 13:29:21,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 234 transitions, 2887 flow [2024-05-12 13:29:21,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 234 transitions, 2851 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-05-12 13:29:21,755 INFO L231 Difference]: Finished difference. Result has 141 places, 213 transitions, 2382 flow [2024-05-12 13:29:21,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2256, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2382, PETRI_PLACES=141, PETRI_TRANSITIONS=213} [2024-05-12 13:29:21,755 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 88 predicate places. [2024-05-12 13:29:21,756 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 213 transitions, 2382 flow [2024-05-12 13:29:21,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:29:21,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:29:21,756 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:29:21,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-05-12 13:29:21,756 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:29:21,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:29:21,757 INFO L85 PathProgramCache]: Analyzing trace with hash -462310630, now seen corresponding path program 2 times [2024-05-12 13:29:21,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:29:21,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118017294] [2024-05-12 13:29:21,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:29:21,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:29:21,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:29:22,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:29:22,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:29:22,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118017294] [2024-05-12 13:29:22,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118017294] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:29:22,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:29:22,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:29:22,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509285376] [2024-05-12 13:29:22,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:29:22,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:29:22,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:29:22,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:29:22,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:29:22,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-05-12 13:29:22,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 213 transitions, 2382 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:29:22,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:29:22,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-05-12 13:29:22,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:29:23,379 INFO L124 PetriNetUnfolderBase]: 4352/6916 cut-off events. [2024-05-12 13:29:23,379 INFO L125 PetriNetUnfolderBase]: For 98313/98324 co-relation queries the response was YES. [2024-05-12 13:29:23,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36058 conditions, 6916 events. 4352/6916 cut-off events. For 98313/98324 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 42137 event pairs, 1422 based on Foata normal form. 8/6745 useless extension candidates. Maximal degree in co-relation 35991. Up to 6103 conditions per place. [2024-05-12 13:29:23,429 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 205 selfloop transitions, 20 changer transitions 0/237 dead transitions. [2024-05-12 13:29:23,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 237 transitions, 2954 flow [2024-05-12 13:29:23,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:29:23,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:29:23,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 137 transitions. [2024-05-12 13:29:23,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4858156028368794 [2024-05-12 13:29:23,430 INFO L175 Difference]: Start difference. First operand has 141 places, 213 transitions, 2382 flow. Second operand 6 states and 137 transitions. [2024-05-12 13:29:23,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 237 transitions, 2954 flow [2024-05-12 13:29:23,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 237 transitions, 2917 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-05-12 13:29:23,563 INFO L231 Difference]: Finished difference. Result has 144 places, 216 transitions, 2428 flow [2024-05-12 13:29:23,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2345, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2428, PETRI_PLACES=144, PETRI_TRANSITIONS=216} [2024-05-12 13:29:23,563 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 91 predicate places. [2024-05-12 13:29:23,564 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 216 transitions, 2428 flow [2024-05-12 13:29:23,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:29:23,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:29:23,564 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:29:23,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-05-12 13:29:23,564 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:29:23,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:29:23,565 INFO L85 PathProgramCache]: Analyzing trace with hash -462301702, now seen corresponding path program 1 times [2024-05-12 13:29:23,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:29:23,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479160870] [2024-05-12 13:29:23,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:29:23,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:29:23,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:29:24,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:29:24,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:29:24,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479160870] [2024-05-12 13:29:24,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479160870] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:29:24,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:29:24,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:29:24,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530356835] [2024-05-12 13:29:24,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:29:24,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:29:24,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:29:24,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:29:24,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:29:24,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:29:24,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 216 transitions, 2428 flow. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 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) [2024-05-12 13:29:24,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:29:24,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:29:24,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:29:25,541 INFO L124 PetriNetUnfolderBase]: 4669/7372 cut-off events. [2024-05-12 13:29:25,542 INFO L125 PetriNetUnfolderBase]: For 102523/102525 co-relation queries the response was YES. [2024-05-12 13:29:25,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38143 conditions, 7372 events. 4669/7372 cut-off events. For 102523/102525 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 44267 event pairs, 1617 based on Foata normal form. 1/7178 useless extension candidates. Maximal degree in co-relation 38075. Up to 6647 conditions per place. [2024-05-12 13:29:25,597 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 220 selfloop transitions, 27 changer transitions 0/255 dead transitions. [2024-05-12 13:29:25,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 255 transitions, 3206 flow [2024-05-12 13:29:25,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:29:25,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:29:25,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 148 transitions. [2024-05-12 13:29:25,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44984802431610943 [2024-05-12 13:29:25,599 INFO L175 Difference]: Start difference. First operand has 144 places, 216 transitions, 2428 flow. Second operand 7 states and 148 transitions. [2024-05-12 13:29:25,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 255 transitions, 3206 flow [2024-05-12 13:29:25,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 255 transitions, 3141 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-05-12 13:29:25,775 INFO L231 Difference]: Finished difference. Result has 149 places, 234 transitions, 2675 flow [2024-05-12 13:29:25,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2371, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2675, PETRI_PLACES=149, PETRI_TRANSITIONS=234} [2024-05-12 13:29:25,776 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 96 predicate places. [2024-05-12 13:29:25,776 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 234 transitions, 2675 flow [2024-05-12 13:29:25,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 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) [2024-05-12 13:29:25,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:29:25,776 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:29:25,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-05-12 13:29:25,776 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:29:25,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:29:25,777 INFO L85 PathProgramCache]: Analyzing trace with hash -79596859, now seen corresponding path program 1 times [2024-05-12 13:29:25,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:29:25,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503350775] [2024-05-12 13:29:25,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:29:25,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:29:25,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:29:26,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:29:26,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:29:26,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503350775] [2024-05-12 13:29:26,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503350775] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:29:26,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:29:26,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:29:26,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680492387] [2024-05-12 13:29:26,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:29:26,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:29:26,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:29:26,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:29:26,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:29:26,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:29:26,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 234 transitions, 2675 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 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) [2024-05-12 13:29:26,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:29:26,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:29:26,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:29:27,748 INFO L124 PetriNetUnfolderBase]: 4895/7730 cut-off events. [2024-05-12 13:29:27,748 INFO L125 PetriNetUnfolderBase]: For 124574/124576 co-relation queries the response was YES. [2024-05-12 13:29:27,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41629 conditions, 7730 events. 4895/7730 cut-off events. For 124574/124576 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 46740 event pairs, 962 based on Foata normal form. 16/7548 useless extension candidates. Maximal degree in co-relation 41558. Up to 5145 conditions per place. [2024-05-12 13:29:27,810 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 187 selfloop transitions, 105 changer transitions 0/300 dead transitions. [2024-05-12 13:29:27,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 300 transitions, 3685 flow [2024-05-12 13:29:27,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:29:27,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:29:27,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 200 transitions. [2024-05-12 13:29:27,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2024-05-12 13:29:27,811 INFO L175 Difference]: Start difference. First operand has 149 places, 234 transitions, 2675 flow. Second operand 8 states and 200 transitions. [2024-05-12 13:29:27,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 300 transitions, 3685 flow [2024-05-12 13:29:28,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 300 transitions, 3547 flow, removed 64 selfloop flow, removed 2 redundant places. [2024-05-12 13:29:28,010 INFO L231 Difference]: Finished difference. Result has 157 places, 244 transitions, 2944 flow [2024-05-12 13:29:28,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2537, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2944, PETRI_PLACES=157, PETRI_TRANSITIONS=244} [2024-05-12 13:29:28,010 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 104 predicate places. [2024-05-12 13:29:28,010 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 244 transitions, 2944 flow [2024-05-12 13:29:28,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 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) [2024-05-12 13:29:28,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:29:28,011 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:29:28,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-05-12 13:29:28,011 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:29:28,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:29:28,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1534441277, now seen corresponding path program 2 times [2024-05-12 13:29:28,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:29:28,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145474937] [2024-05-12 13:29:28,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:29:28,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:29:28,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:29:28,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:29:28,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:29:28,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145474937] [2024-05-12 13:29:28,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145474937] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:29:28,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:29:28,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:29:28,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622789213] [2024-05-12 13:29:28,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:29:28,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:29:28,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:29:28,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:29:28,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:29:28,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:29:28,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 244 transitions, 2944 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 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) [2024-05-12 13:29:28,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:29:28,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:29:28,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:29:30,131 INFO L124 PetriNetUnfolderBase]: 5015/7915 cut-off events. [2024-05-12 13:29:30,131 INFO L125 PetriNetUnfolderBase]: For 139616/139618 co-relation queries the response was YES. [2024-05-12 13:29:30,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44248 conditions, 7915 events. 5015/7915 cut-off events. For 139616/139618 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 48120 event pairs, 1404 based on Foata normal form. 16/7734 useless extension candidates. Maximal degree in co-relation 44173. Up to 5966 conditions per place. [2024-05-12 13:29:30,181 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 187 selfloop transitions, 107 changer transitions 0/302 dead transitions. [2024-05-12 13:29:30,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 302 transitions, 3798 flow [2024-05-12 13:29:30,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:29:30,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:29:30,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 200 transitions. [2024-05-12 13:29:30,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2024-05-12 13:29:30,183 INFO L175 Difference]: Start difference. First operand has 157 places, 244 transitions, 2944 flow. Second operand 8 states and 200 transitions. [2024-05-12 13:29:30,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 302 transitions, 3798 flow [2024-05-12 13:29:30,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 302 transitions, 3643 flow, removed 30 selfloop flow, removed 3 redundant places. [2024-05-12 13:29:30,369 INFO L231 Difference]: Finished difference. Result has 163 places, 248 transitions, 3103 flow [2024-05-12 13:29:30,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2793, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3103, PETRI_PLACES=163, PETRI_TRANSITIONS=248} [2024-05-12 13:29:30,370 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 110 predicate places. [2024-05-12 13:29:30,370 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 248 transitions, 3103 flow [2024-05-12 13:29:30,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 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) [2024-05-12 13:29:30,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:29:30,371 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:29:30,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-05-12 13:29:30,371 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:29:30,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:29:30,372 INFO L85 PathProgramCache]: Analyzing trace with hash -937575070, now seen corresponding path program 1 times [2024-05-12 13:29:30,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:29:30,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146917195] [2024-05-12 13:29:30,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:29:30,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:29:30,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:29:30,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:29:30,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:29:30,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146917195] [2024-05-12 13:29:30,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146917195] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:29:30,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:29:30,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:29:30,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809492298] [2024-05-12 13:29:30,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:29:30,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:29:30,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:29:30,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:29:30,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:29:31,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:29:31,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 248 transitions, 3103 flow. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 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) [2024-05-12 13:29:31,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:29:31,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:29:31,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:29:32,292 INFO L124 PetriNetUnfolderBase]: 5055/7964 cut-off events. [2024-05-12 13:29:32,292 INFO L125 PetriNetUnfolderBase]: For 141833/141852 co-relation queries the response was YES. [2024-05-12 13:29:32,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45329 conditions, 7964 events. 5055/7964 cut-off events. For 141833/141852 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 48395 event pairs, 1609 based on Foata normal form. 18/7790 useless extension candidates. Maximal degree in co-relation 45251. Up to 7044 conditions per place. [2024-05-12 13:29:32,359 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 263 selfloop transitions, 40 changer transitions 0/311 dead transitions. [2024-05-12 13:29:32,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 311 transitions, 4339 flow [2024-05-12 13:29:32,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:29:32,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:29:32,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 163 transitions. [2024-05-12 13:29:32,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49544072948328266 [2024-05-12 13:29:32,361 INFO L175 Difference]: Start difference. First operand has 163 places, 248 transitions, 3103 flow. Second operand 7 states and 163 transitions. [2024-05-12 13:29:32,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 311 transitions, 4339 flow [2024-05-12 13:29:32,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 311 transitions, 4160 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-05-12 13:29:32,654 INFO L231 Difference]: Finished difference. Result has 168 places, 275 transitions, 3589 flow [2024-05-12 13:29:32,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2944, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3589, PETRI_PLACES=168, PETRI_TRANSITIONS=275} [2024-05-12 13:29:32,654 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 115 predicate places. [2024-05-12 13:29:32,654 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 275 transitions, 3589 flow [2024-05-12 13:29:32,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 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) [2024-05-12 13:29:32,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:29:32,655 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:29:32,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-05-12 13:29:32,655 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:29:32,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:29:32,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1672969427, now seen corresponding path program 3 times [2024-05-12 13:29:32,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:29:32,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353607397] [2024-05-12 13:29:32,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:29:32,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:29:32,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:29:33,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:29:33,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:29:33,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353607397] [2024-05-12 13:29:33,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353607397] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:29:33,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:29:33,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:29:33,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403510201] [2024-05-12 13:29:33,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:29:33,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:29:33,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:29:33,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:29:33,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:29:33,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:29:33,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 275 transitions, 3589 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 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) [2024-05-12 13:29:33,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:29:33,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:29:33,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:29:34,814 INFO L124 PetriNetUnfolderBase]: 5281/8368 cut-off events. [2024-05-12 13:29:34,814 INFO L125 PetriNetUnfolderBase]: For 161661/161675 co-relation queries the response was YES. [2024-05-12 13:29:34,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49507 conditions, 8368 events. 5281/8368 cut-off events. For 161661/161675 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 51789 event pairs, 1172 based on Foata normal form. 30/8199 useless extension candidates. Maximal degree in co-relation 49425. Up to 6251 conditions per place. [2024-05-12 13:29:34,878 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 207 selfloop transitions, 124 changer transitions 0/339 dead transitions. [2024-05-12 13:29:34,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 339 transitions, 4694 flow [2024-05-12 13:29:34,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:29:34,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:29:34,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-05-12 13:29:34,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5452127659574468 [2024-05-12 13:29:34,879 INFO L175 Difference]: Start difference. First operand has 168 places, 275 transitions, 3589 flow. Second operand 8 states and 205 transitions. [2024-05-12 13:29:34,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 339 transitions, 4694 flow [2024-05-12 13:29:35,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 339 transitions, 4611 flow, removed 22 selfloop flow, removed 3 redundant places. [2024-05-12 13:29:35,129 INFO L231 Difference]: Finished difference. Result has 174 places, 280 transitions, 3893 flow [2024-05-12 13:29:35,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3506, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3893, PETRI_PLACES=174, PETRI_TRANSITIONS=280} [2024-05-12 13:29:35,130 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 121 predicate places. [2024-05-12 13:29:35,130 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 280 transitions, 3893 flow [2024-05-12 13:29:35,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 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) [2024-05-12 13:29:35,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:29:35,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:29:35,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-05-12 13:29:35,130 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:29:35,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:29:35,131 INFO L85 PathProgramCache]: Analyzing trace with hash -126879533, now seen corresponding path program 4 times [2024-05-12 13:29:35,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:29:35,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823619567] [2024-05-12 13:29:35,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:29:35,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:29:35,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:29:35,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:29:35,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:29:35,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823619567] [2024-05-12 13:29:35,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823619567] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:29:35,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:29:35,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:29:35,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167580197] [2024-05-12 13:29:35,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:29:35,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:29:35,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:29:35,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:29:35,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:29:35,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:29:35,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 280 transitions, 3893 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 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) [2024-05-12 13:29:35,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:29:35,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:29:35,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:29:37,352 INFO L124 PetriNetUnfolderBase]: 5435/8599 cut-off events. [2024-05-12 13:29:37,352 INFO L125 PetriNetUnfolderBase]: For 181537/181551 co-relation queries the response was YES. [2024-05-12 13:29:37,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52113 conditions, 8599 events. 5435/8599 cut-off events. For 181537/181551 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 53405 event pairs, 1527 based on Foata normal form. 34/8435 useless extension candidates. Maximal degree in co-relation 52029. Up to 6862 conditions per place. [2024-05-12 13:29:37,423 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 209 selfloop transitions, 121 changer transitions 0/338 dead transitions. [2024-05-12 13:29:37,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 338 transitions, 4839 flow [2024-05-12 13:29:37,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:29:37,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:29:37,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 200 transitions. [2024-05-12 13:29:37,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2024-05-12 13:29:37,425 INFO L175 Difference]: Start difference. First operand has 174 places, 280 transitions, 3893 flow. Second operand 8 states and 200 transitions. [2024-05-12 13:29:37,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 338 transitions, 4839 flow [2024-05-12 13:29:37,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 338 transitions, 4662 flow, removed 19 selfloop flow, removed 4 redundant places. [2024-05-12 13:29:37,786 INFO L231 Difference]: Finished difference. Result has 178 places, 282 transitions, 4028 flow [2024-05-12 13:29:37,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3718, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4028, PETRI_PLACES=178, PETRI_TRANSITIONS=282} [2024-05-12 13:29:37,787 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 125 predicate places. [2024-05-12 13:29:37,787 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 282 transitions, 4028 flow [2024-05-12 13:29:37,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 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) [2024-05-12 13:29:37,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:29:37,787 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:29:37,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-05-12 13:29:37,788 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:29:37,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:29:37,788 INFO L85 PathProgramCache]: Analyzing trace with hash -121517153, now seen corresponding path program 5 times [2024-05-12 13:29:37,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:29:37,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579517639] [2024-05-12 13:29:37,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:29:37,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:29:37,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:29:38,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:29:38,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:29:38,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579517639] [2024-05-12 13:29:38,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579517639] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:29:38,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:29:38,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:29:38,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048351727] [2024-05-12 13:29:38,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:29:38,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:29:38,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:29:38,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:29:38,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:29:38,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:29:38,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 282 transitions, 4028 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 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) [2024-05-12 13:29:38,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:29:38,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:29:38,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:29:40,221 INFO L124 PetriNetUnfolderBase]: 5589/8810 cut-off events. [2024-05-12 13:29:40,221 INFO L125 PetriNetUnfolderBase]: For 192269/192271 co-relation queries the response was YES. [2024-05-12 13:29:40,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54246 conditions, 8810 events. 5589/8810 cut-off events. For 192269/192271 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 54758 event pairs, 1529 based on Foata normal form. 20/8633 useless extension candidates. Maximal degree in co-relation 54160. Up to 7096 conditions per place. [2024-05-12 13:29:40,299 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 215 selfloop transitions, 114 changer transitions 0/337 dead transitions. [2024-05-12 13:29:40,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 337 transitions, 4962 flow [2024-05-12 13:29:40,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:29:40,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:29:40,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-05-12 13:29:40,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5212765957446809 [2024-05-12 13:29:40,301 INFO L175 Difference]: Start difference. First operand has 178 places, 282 transitions, 4028 flow. Second operand 8 states and 196 transitions. [2024-05-12 13:29:40,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 337 transitions, 4962 flow [2024-05-12 13:29:40,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 337 transitions, 4696 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-05-12 13:29:40,647 INFO L231 Difference]: Finished difference. Result has 180 places, 284 transitions, 4062 flow [2024-05-12 13:29:40,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3762, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4062, PETRI_PLACES=180, PETRI_TRANSITIONS=284} [2024-05-12 13:29:40,648 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 127 predicate places. [2024-05-12 13:29:40,648 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 284 transitions, 4062 flow [2024-05-12 13:29:40,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 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) [2024-05-12 13:29:40,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:29:40,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:29:40,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-05-12 13:29:40,648 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:29:40,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:29:40,649 INFO L85 PathProgramCache]: Analyzing trace with hash -121301951, now seen corresponding path program 1 times [2024-05-12 13:29:40,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:29:40,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411246567] [2024-05-12 13:29:40,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:29:40,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:29:40,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:29:41,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:29:41,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:29:41,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411246567] [2024-05-12 13:29:41,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411246567] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:29:41,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:29:41,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:29:41,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215590403] [2024-05-12 13:29:41,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:29:41,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:29:41,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:29:41,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:29:41,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:29:41,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:29:41,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 284 transitions, 4062 flow. Second operand has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:29:41,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:29:41,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:29:41,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:29:43,395 INFO L124 PetriNetUnfolderBase]: 5675/8953 cut-off events. [2024-05-12 13:29:43,395 INFO L125 PetriNetUnfolderBase]: For 195351/195353 co-relation queries the response was YES. [2024-05-12 13:29:43,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54944 conditions, 8953 events. 5675/8953 cut-off events. For 195351/195353 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 55928 event pairs, 1520 based on Foata normal form. 12/8769 useless extension candidates. Maximal degree in co-relation 54857. Up to 6558 conditions per place. [2024-05-12 13:29:43,485 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 210 selfloop transitions, 121 changer transitions 0/339 dead transitions. [2024-05-12 13:29:43,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 339 transitions, 4994 flow [2024-05-12 13:29:43,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:29:43,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:29:43,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-05-12 13:29:43,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.523936170212766 [2024-05-12 13:29:43,486 INFO L175 Difference]: Start difference. First operand has 180 places, 284 transitions, 4062 flow. Second operand 8 states and 197 transitions. [2024-05-12 13:29:43,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 339 transitions, 4994 flow [2024-05-12 13:29:43,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 339 transitions, 4802 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-05-12 13:29:43,905 INFO L231 Difference]: Finished difference. Result has 183 places, 286 transitions, 4178 flow [2024-05-12 13:29:43,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3870, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4178, PETRI_PLACES=183, PETRI_TRANSITIONS=286} [2024-05-12 13:29:43,906 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 130 predicate places. [2024-05-12 13:29:43,906 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 286 transitions, 4178 flow [2024-05-12 13:29:43,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:29:43,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:29:43,906 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:29:43,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-05-12 13:29:43,906 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:29:43,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:29:43,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1723788115, now seen corresponding path program 1 times [2024-05-12 13:29:43,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:29:43,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561907849] [2024-05-12 13:29:43,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:29:43,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:29:43,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:29:44,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:29:44,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:29:44,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561907849] [2024-05-12 13:29:44,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561907849] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:29:44,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:29:44,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:29:44,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002659537] [2024-05-12 13:29:44,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:29:44,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:29:44,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:29:44,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:29:44,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:29:44,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:29:44,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 286 transitions, 4178 flow. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 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) [2024-05-12 13:29:44,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:29:44,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:29:44,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:29:45,972 INFO L124 PetriNetUnfolderBase]: 5695/8980 cut-off events. [2024-05-12 13:29:45,972 INFO L125 PetriNetUnfolderBase]: For 195400/195414 co-relation queries the response was YES. [2024-05-12 13:29:46,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55053 conditions, 8980 events. 5695/8980 cut-off events. For 195400/195414 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 56017 event pairs, 1845 based on Foata normal form. 15/8803 useless extension candidates. Maximal degree in co-relation 54965. Up to 8191 conditions per place. [2024-05-12 13:29:46,067 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 295 selfloop transitions, 18 changer transitions 0/321 dead transitions. [2024-05-12 13:29:46,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 321 transitions, 5006 flow [2024-05-12 13:29:46,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:29:46,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:29:46,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 154 transitions. [2024-05-12 13:29:46,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46808510638297873 [2024-05-12 13:29:46,069 INFO L175 Difference]: Start difference. First operand has 183 places, 286 transitions, 4178 flow. Second operand 7 states and 154 transitions. [2024-05-12 13:29:46,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 321 transitions, 5006 flow [2024-05-12 13:29:46,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 321 transitions, 4730 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-05-12 13:29:46,441 INFO L231 Difference]: Finished difference. Result has 184 places, 289 transitions, 4002 flow [2024-05-12 13:29:46,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3902, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4002, PETRI_PLACES=184, PETRI_TRANSITIONS=289} [2024-05-12 13:29:46,441 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 131 predicate places. [2024-05-12 13:29:46,442 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 289 transitions, 4002 flow [2024-05-12 13:29:46,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 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) [2024-05-12 13:29:46,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:29:46,442 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:29:46,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-05-12 13:29:46,442 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:29:46,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:29:46,443 INFO L85 PathProgramCache]: Analyzing trace with hash -937275610, now seen corresponding path program 2 times [2024-05-12 13:29:46,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:29:46,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956032182] [2024-05-12 13:29:46,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:29:46,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:29:46,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:29:47,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:29:47,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:29:47,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956032182] [2024-05-12 13:29:47,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956032182] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:29:47,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:29:47,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:29:47,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229317173] [2024-05-12 13:29:47,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:29:47,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:29:47,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:29:47,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:29:47,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:29:47,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:29:47,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 289 transitions, 4002 flow. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 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) [2024-05-12 13:29:47,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:29:47,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:29:47,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:29:48,669 INFO L124 PetriNetUnfolderBase]: 5783/9119 cut-off events. [2024-05-12 13:29:48,670 INFO L125 PetriNetUnfolderBase]: For 197181/197192 co-relation queries the response was YES. [2024-05-12 13:29:48,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55504 conditions, 9119 events. 5783/9119 cut-off events. For 197181/197192 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 57110 event pairs, 1810 based on Foata normal form. 8/8929 useless extension candidates. Maximal degree in co-relation 55415. Up to 8034 conditions per place. [2024-05-12 13:29:48,764 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 278 selfloop transitions, 43 changer transitions 0/329 dead transitions. [2024-05-12 13:29:48,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 329 transitions, 4970 flow [2024-05-12 13:29:48,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:29:48,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:29:48,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 161 transitions. [2024-05-12 13:29:48,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48936170212765956 [2024-05-12 13:29:48,765 INFO L175 Difference]: Start difference. First operand has 184 places, 289 transitions, 4002 flow. Second operand 7 states and 161 transitions. [2024-05-12 13:29:48,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 329 transitions, 4970 flow [2024-05-12 13:29:49,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 329 transitions, 4909 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-05-12 13:29:49,130 INFO L231 Difference]: Finished difference. Result has 188 places, 297 transitions, 4174 flow [2024-05-12 13:29:49,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3941, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4174, PETRI_PLACES=188, PETRI_TRANSITIONS=297} [2024-05-12 13:29:49,131 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 135 predicate places. [2024-05-12 13:29:49,131 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 297 transitions, 4174 flow [2024-05-12 13:29:49,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 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) [2024-05-12 13:29:49,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:29:49,131 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:29:49,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-05-12 13:29:49,131 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:29:49,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:29:49,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1229098879, now seen corresponding path program 6 times [2024-05-12 13:29:49,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:29:49,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671918831] [2024-05-12 13:29:49,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:29:49,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:29:49,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:29:49,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:29:49,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:29:49,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671918831] [2024-05-12 13:29:49,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671918831] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:29:49,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:29:49,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:29:49,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059571401] [2024-05-12 13:29:49,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:29:49,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:29:49,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:29:49,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:29:49,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:29:49,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:29:49,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 297 transitions, 4174 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 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) [2024-05-12 13:29:49,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:29:49,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:29:49,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:29:51,576 INFO L124 PetriNetUnfolderBase]: 5747/9074 cut-off events. [2024-05-12 13:29:51,576 INFO L125 PetriNetUnfolderBase]: For 211327/211338 co-relation queries the response was YES. [2024-05-12 13:29:51,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56237 conditions, 9074 events. 5747/9074 cut-off events. For 211327/211338 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 56769 event pairs, 1573 based on Foata normal form. 26/8891 useless extension candidates. Maximal degree in co-relation 56146. Up to 7326 conditions per place. [2024-05-12 13:29:51,660 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 229 selfloop transitions, 110 changer transitions 0/347 dead transitions. [2024-05-12 13:29:51,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 347 transitions, 5080 flow [2024-05-12 13:29:51,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:29:51,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:29:51,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2024-05-12 13:29:51,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5079787234042553 [2024-05-12 13:29:51,662 INFO L175 Difference]: Start difference. First operand has 188 places, 297 transitions, 4174 flow. Second operand 8 states and 191 transitions. [2024-05-12 13:29:51,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 347 transitions, 5080 flow [2024-05-12 13:29:52,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 347 transitions, 4957 flow, removed 45 selfloop flow, removed 3 redundant places. [2024-05-12 13:29:52,126 INFO L231 Difference]: Finished difference. Result has 193 places, 298 transitions, 4307 flow [2024-05-12 13:29:52,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4061, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4307, PETRI_PLACES=193, PETRI_TRANSITIONS=298} [2024-05-12 13:29:52,129 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 140 predicate places. [2024-05-12 13:29:52,129 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 298 transitions, 4307 flow [2024-05-12 13:29:52,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 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) [2024-05-12 13:29:52,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:29:52,129 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:29:52,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-05-12 13:29:52,129 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:29:52,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:29:52,130 INFO L85 PathProgramCache]: Analyzing trace with hash -972383167, now seen corresponding path program 2 times [2024-05-12 13:29:52,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:29:52,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230804786] [2024-05-12 13:29:52,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:29:52,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:29:52,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:29:53,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:29:53,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:29:53,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230804786] [2024-05-12 13:29:53,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230804786] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:29:53,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:29:53,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:29:53,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979033917] [2024-05-12 13:29:53,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:29:53,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:29:53,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:29:53,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:29:53,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:29:53,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:29:53,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 298 transitions, 4307 flow. Second operand has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:29:53,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:29:53,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:29:53,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:29:54,745 INFO L124 PetriNetUnfolderBase]: 5727/9024 cut-off events. [2024-05-12 13:29:54,745 INFO L125 PetriNetUnfolderBase]: For 204062/204073 co-relation queries the response was YES. [2024-05-12 13:29:54,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55929 conditions, 9024 events. 5727/9024 cut-off events. For 204062/204073 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 56216 event pairs, 1541 based on Foata normal form. 18/8837 useless extension candidates. Maximal degree in co-relation 55836. Up to 7144 conditions per place. [2024-05-12 13:29:54,832 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 226 selfloop transitions, 114 changer transitions 0/348 dead transitions. [2024-05-12 13:29:54,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 348 transitions, 5195 flow [2024-05-12 13:29:54,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:29:54,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:29:54,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 193 transitions. [2024-05-12 13:29:54,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5132978723404256 [2024-05-12 13:29:54,834 INFO L175 Difference]: Start difference. First operand has 193 places, 298 transitions, 4307 flow. Second operand 8 states and 193 transitions. [2024-05-12 13:29:54,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 348 transitions, 5195 flow [2024-05-12 13:29:55,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 348 transitions, 5011 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-05-12 13:29:55,266 INFO L231 Difference]: Finished difference. Result has 196 places, 298 transitions, 4358 flow [2024-05-12 13:29:55,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4123, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4358, PETRI_PLACES=196, PETRI_TRANSITIONS=298} [2024-05-12 13:29:55,266 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 143 predicate places. [2024-05-12 13:29:55,266 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 298 transitions, 4358 flow [2024-05-12 13:29:55,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:29:55,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:29:55,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:29:55,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-05-12 13:29:55,267 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:29:55,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:29:55,267 INFO L85 PathProgramCache]: Analyzing trace with hash -963186397, now seen corresponding path program 3 times [2024-05-12 13:29:55,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:29:55,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396736265] [2024-05-12 13:29:55,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:29:55,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:29:55,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:29:56,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:29:56,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:29:56,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396736265] [2024-05-12 13:29:56,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396736265] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:29:56,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:29:56,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:29:56,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910566136] [2024-05-12 13:29:56,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:29:56,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:29:56,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:29:56,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:29:56,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:29:56,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:29:56,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 298 transitions, 4358 flow. Second operand has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:29:56,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:29:56,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:29:56,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:29:57,961 INFO L124 PetriNetUnfolderBase]: 5707/9009 cut-off events. [2024-05-12 13:29:57,961 INFO L125 PetriNetUnfolderBase]: For 203173/203184 co-relation queries the response was YES. [2024-05-12 13:29:58,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55308 conditions, 9009 events. 5707/9009 cut-off events. For 203173/203184 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 56380 event pairs, 1381 based on Foata normal form. 18/8817 useless extension candidates. Maximal degree in co-relation 55213. Up to 6036 conditions per place. [2024-05-12 13:29:58,062 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 210 selfloop transitions, 130 changer transitions 0/348 dead transitions. [2024-05-12 13:29:58,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 348 transitions, 5224 flow [2024-05-12 13:29:58,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:29:58,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:29:58,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2024-05-12 13:29:58,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5079787234042553 [2024-05-12 13:29:58,066 INFO L175 Difference]: Start difference. First operand has 196 places, 298 transitions, 4358 flow. Second operand 8 states and 191 transitions. [2024-05-12 13:29:58,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 348 transitions, 5224 flow [2024-05-12 13:29:58,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 348 transitions, 4732 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-05-12 13:29:58,488 INFO L231 Difference]: Finished difference. Result has 194 places, 299 transitions, 4121 flow [2024-05-12 13:29:58,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3806, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4121, PETRI_PLACES=194, PETRI_TRANSITIONS=299} [2024-05-12 13:29:58,490 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 141 predicate places. [2024-05-12 13:29:58,490 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 299 transitions, 4121 flow [2024-05-12 13:29:58,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:29:58,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:29:58,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:29:58,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-05-12 13:29:58,490 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:29:58,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:29:58,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1446465127, now seen corresponding path program 2 times [2024-05-12 13:29:58,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:29:58,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383156025] [2024-05-12 13:29:58,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:29:58,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:29:58,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:29:59,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:29:59,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:29:59,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383156025] [2024-05-12 13:29:59,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383156025] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:29:59,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:29:59,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:29:59,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386569272] [2024-05-12 13:29:59,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:29:59,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:29:59,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:29:59,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:29:59,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:29:59,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:29:59,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 299 transitions, 4121 flow. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 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) [2024-05-12 13:29:59,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:29:59,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:29:59,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:30:00,817 INFO L124 PetriNetUnfolderBase]: 5727/9048 cut-off events. [2024-05-12 13:30:00,819 INFO L125 PetriNetUnfolderBase]: For 202197/202199 co-relation queries the response was YES. [2024-05-12 13:30:00,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54292 conditions, 9048 events. 5727/9048 cut-off events. For 202197/202199 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 56579 event pairs, 1836 based on Foata normal form. 1/8846 useless extension candidates. Maximal degree in co-relation 54198. Up to 8234 conditions per place. [2024-05-12 13:30:00,920 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 300 selfloop transitions, 21 changer transitions 0/329 dead transitions. [2024-05-12 13:30:00,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 329 transitions, 4949 flow [2024-05-12 13:30:00,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:30:00,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:30:00,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 149 transitions. [2024-05-12 13:30:00,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45288753799392095 [2024-05-12 13:30:00,927 INFO L175 Difference]: Start difference. First operand has 194 places, 299 transitions, 4121 flow. Second operand 7 states and 149 transitions. [2024-05-12 13:30:00,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 329 transitions, 4949 flow [2024-05-12 13:30:01,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 329 transitions, 4656 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-05-12 13:30:01,397 INFO L231 Difference]: Finished difference. Result has 195 places, 302 transitions, 3945 flow [2024-05-12 13:30:01,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3828, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3945, PETRI_PLACES=195, PETRI_TRANSITIONS=302} [2024-05-12 13:30:01,398 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 142 predicate places. [2024-05-12 13:30:01,398 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 302 transitions, 3945 flow [2024-05-12 13:30:01,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 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) [2024-05-12 13:30:01,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:30:01,399 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:30:01,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-05-12 13:30:01,399 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:30:01,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:30:01,399 INFO L85 PathProgramCache]: Analyzing trace with hash -582090010, now seen corresponding path program 3 times [2024-05-12 13:30:01,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:30:01,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646001461] [2024-05-12 13:30:01,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:30:01,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:30:01,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:30:02,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:30:02,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:30:02,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646001461] [2024-05-12 13:30:02,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646001461] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:30:02,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:30:02,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:30:02,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565158019] [2024-05-12 13:30:02,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:30:02,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:30:02,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:30:02,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:30:02,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:30:02,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:30:02,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 302 transitions, 3945 flow. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 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) [2024-05-12 13:30:02,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:30:02,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:30:02,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:30:03,552 INFO L124 PetriNetUnfolderBase]: 5770/9096 cut-off events. [2024-05-12 13:30:03,553 INFO L125 PetriNetUnfolderBase]: For 205211/205222 co-relation queries the response was YES. [2024-05-12 13:30:03,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54098 conditions, 9096 events. 5770/9096 cut-off events. For 205211/205222 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 56926 event pairs, 1755 based on Foata normal form. 8/8894 useless extension candidates. Maximal degree in co-relation 54003. Up to 7885 conditions per place. [2024-05-12 13:30:03,637 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 282 selfloop transitions, 57 changer transitions 0/347 dead transitions. [2024-05-12 13:30:03,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 347 transitions, 5120 flow [2024-05-12 13:30:03,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:30:03,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:30:03,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2024-05-12 13:30:03,638 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48632218844984804 [2024-05-12 13:30:03,639 INFO L175 Difference]: Start difference. First operand has 195 places, 302 transitions, 3945 flow. Second operand 7 states and 160 transitions. [2024-05-12 13:30:03,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 347 transitions, 5120 flow [2024-05-12 13:30:04,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 347 transitions, 5011 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-05-12 13:30:04,061 INFO L231 Difference]: Finished difference. Result has 198 places, 315 transitions, 4179 flow [2024-05-12 13:30:04,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3836, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4179, PETRI_PLACES=198, PETRI_TRANSITIONS=315} [2024-05-12 13:30:04,062 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 145 predicate places. [2024-05-12 13:30:04,062 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 315 transitions, 4179 flow [2024-05-12 13:30:04,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 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) [2024-05-12 13:30:04,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:30:04,062 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:30:04,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-05-12 13:30:04,063 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:30:04,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:30:04,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1446910597, now seen corresponding path program 3 times [2024-05-12 13:30:04,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:30:04,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056112548] [2024-05-12 13:30:04,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:30:04,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:30:04,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:30:04,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:30:04,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:30:04,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056112548] [2024-05-12 13:30:04,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056112548] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:30:04,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:30:04,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:30:04,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316122283] [2024-05-12 13:30:04,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:30:04,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:30:04,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:30:04,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:30:04,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:30:04,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:30:04,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 315 transitions, 4179 flow. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 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) [2024-05-12 13:30:04,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:30:04,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:30:04,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:30:06,241 INFO L124 PetriNetUnfolderBase]: 5775/9127 cut-off events. [2024-05-12 13:30:06,241 INFO L125 PetriNetUnfolderBase]: For 219344/219378 co-relation queries the response was YES. [2024-05-12 13:30:06,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55970 conditions, 9127 events. 5775/9127 cut-off events. For 219344/219378 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 57142 event pairs, 1793 based on Foata normal form. 29/8951 useless extension candidates. Maximal degree in co-relation 55873. Up to 8221 conditions per place. [2024-05-12 13:30:06,331 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 307 selfloop transitions, 35 changer transitions 0/350 dead transitions. [2024-05-12 13:30:06,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 350 transitions, 5117 flow [2024-05-12 13:30:06,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:30:06,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:30:06,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 153 transitions. [2024-05-12 13:30:06,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46504559270516715 [2024-05-12 13:30:06,332 INFO L175 Difference]: Start difference. First operand has 198 places, 315 transitions, 4179 flow. Second operand 7 states and 153 transitions. [2024-05-12 13:30:06,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 350 transitions, 5117 flow [2024-05-12 13:30:06,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 350 transitions, 5010 flow, removed 39 selfloop flow, removed 2 redundant places. [2024-05-12 13:30:06,817 INFO L231 Difference]: Finished difference. Result has 203 places, 318 transitions, 4226 flow [2024-05-12 13:30:06,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4072, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4226, PETRI_PLACES=203, PETRI_TRANSITIONS=318} [2024-05-12 13:30:06,818 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 150 predicate places. [2024-05-12 13:30:06,818 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 318 transitions, 4226 flow [2024-05-12 13:30:06,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 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) [2024-05-12 13:30:06,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:30:06,819 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:30:06,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-05-12 13:30:06,819 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:30:06,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:30:06,819 INFO L85 PathProgramCache]: Analyzing trace with hash -760080292, now seen corresponding path program 1 times [2024-05-12 13:30:06,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:30:06,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119984653] [2024-05-12 13:30:06,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:30:06,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:30:06,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:30:07,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:30:07,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:30:07,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119984653] [2024-05-12 13:30:07,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119984653] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:30:07,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:30:07,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:30:07,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707269776] [2024-05-12 13:30:07,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:30:07,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:30:07,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:30:07,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:30:07,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:30:07,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-05-12 13:30:07,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 318 transitions, 4226 flow. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:30:07,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:30:07,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-05-12 13:30:07,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:30:09,189 INFO L124 PetriNetUnfolderBase]: 5569/8885 cut-off events. [2024-05-12 13:30:09,189 INFO L125 PetriNetUnfolderBase]: For 232695/232809 co-relation queries the response was YES. [2024-05-12 13:30:09,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55221 conditions, 8885 events. 5569/8885 cut-off events. For 232695/232809 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 56476 event pairs, 1589 based on Foata normal form. 35/8685 useless extension candidates. Maximal degree in co-relation 55122. Up to 7847 conditions per place. [2024-05-12 13:30:09,280 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 306 selfloop transitions, 29 changer transitions 0/355 dead transitions. [2024-05-12 13:30:09,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 355 transitions, 5100 flow [2024-05-12 13:30:09,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:30:09,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:30:09,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 162 transitions. [2024-05-12 13:30:09,282 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49240121580547114 [2024-05-12 13:30:09,282 INFO L175 Difference]: Start difference. First operand has 203 places, 318 transitions, 4226 flow. Second operand 7 states and 162 transitions. [2024-05-12 13:30:09,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 355 transitions, 5100 flow [2024-05-12 13:30:09,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 355 transitions, 4978 flow, removed 28 selfloop flow, removed 5 redundant places. [2024-05-12 13:30:09,756 INFO L231 Difference]: Finished difference. Result has 206 places, 327 transitions, 4292 flow [2024-05-12 13:30:09,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4104, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4292, PETRI_PLACES=206, PETRI_TRANSITIONS=327} [2024-05-12 13:30:09,756 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 153 predicate places. [2024-05-12 13:30:09,756 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 327 transitions, 4292 flow [2024-05-12 13:30:09,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:30:09,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:30:09,757 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:30:09,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-05-12 13:30:09,757 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:30:09,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:30:09,757 INFO L85 PathProgramCache]: Analyzing trace with hash -759959392, now seen corresponding path program 2 times [2024-05-12 13:30:09,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:30:09,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125799084] [2024-05-12 13:30:09,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:30:09,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:30:09,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:30:10,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:30:10,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:30:10,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125799084] [2024-05-12 13:30:10,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125799084] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:30:10,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:30:10,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:30:10,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049885569] [2024-05-12 13:30:10,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:30:10,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:30:10,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:30:10,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:30:10,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:30:10,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-05-12 13:30:10,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 327 transitions, 4292 flow. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:30:10,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:30:10,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-05-12 13:30:10,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:30:12,075 INFO L124 PetriNetUnfolderBase]: 5757/9137 cut-off events. [2024-05-12 13:30:12,075 INFO L125 PetriNetUnfolderBase]: For 253397/253507 co-relation queries the response was YES. [2024-05-12 13:30:12,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58761 conditions, 9137 events. 5757/9137 cut-off events. For 253397/253507 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 57912 event pairs, 1584 based on Foata normal form. 38/8943 useless extension candidates. Maximal degree in co-relation 58660. Up to 7962 conditions per place. [2024-05-12 13:30:12,170 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 313 selfloop transitions, 38 changer transitions 0/371 dead transitions. [2024-05-12 13:30:12,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 371 transitions, 5393 flow [2024-05-12 13:30:12,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:30:12,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:30:12,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 164 transitions. [2024-05-12 13:30:12,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49848024316109424 [2024-05-12 13:30:12,172 INFO L175 Difference]: Start difference. First operand has 206 places, 327 transitions, 4292 flow. Second operand 7 states and 164 transitions. [2024-05-12 13:30:12,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 371 transitions, 5393 flow [2024-05-12 13:30:12,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 371 transitions, 5300 flow, removed 31 selfloop flow, removed 3 redundant places. [2024-05-12 13:30:12,810 INFO L231 Difference]: Finished difference. Result has 211 places, 341 transitions, 4495 flow [2024-05-12 13:30:12,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4199, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4495, PETRI_PLACES=211, PETRI_TRANSITIONS=341} [2024-05-12 13:30:12,811 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 158 predicate places. [2024-05-12 13:30:12,811 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 341 transitions, 4495 flow [2024-05-12 13:30:12,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:30:12,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:30:12,812 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:30:12,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-05-12 13:30:12,812 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:30:12,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:30:12,812 INFO L85 PathProgramCache]: Analyzing trace with hash -660173236, now seen corresponding path program 3 times [2024-05-12 13:30:12,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:30:12,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978047508] [2024-05-12 13:30:12,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:30:12,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:30:12,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:30:13,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:30:13,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:30:13,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978047508] [2024-05-12 13:30:13,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978047508] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:30:13,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:30:13,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:30:13,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402738169] [2024-05-12 13:30:13,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:30:13,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:30:13,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:30:13,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:30:13,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:30:13,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-05-12 13:30:13,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 341 transitions, 4495 flow. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:30:13,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:30:13,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-05-12 13:30:13,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:30:15,162 INFO L124 PetriNetUnfolderBase]: 5812/9205 cut-off events. [2024-05-12 13:30:15,162 INFO L125 PetriNetUnfolderBase]: For 265575/265690 co-relation queries the response was YES. [2024-05-12 13:30:15,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60820 conditions, 9205 events. 5812/9205 cut-off events. For 265575/265690 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 58154 event pairs, 1641 based on Foata normal form. 34/9000 useless extension candidates. Maximal degree in co-relation 60717. Up to 7895 conditions per place. [2024-05-12 13:30:15,272 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 307 selfloop transitions, 60 changer transitions 0/387 dead transitions. [2024-05-12 13:30:15,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 387 transitions, 5774 flow [2024-05-12 13:30:15,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:30:15,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:30:15,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-05-12 13:30:15,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5075987841945289 [2024-05-12 13:30:15,274 INFO L175 Difference]: Start difference. First operand has 211 places, 341 transitions, 4495 flow. Second operand 7 states and 167 transitions. [2024-05-12 13:30:15,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 387 transitions, 5774 flow [2024-05-12 13:30:15,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 387 transitions, 5672 flow, removed 39 selfloop flow, removed 3 redundant places. [2024-05-12 13:30:15,907 INFO L231 Difference]: Finished difference. Result has 216 places, 355 transitions, 4751 flow [2024-05-12 13:30:15,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4393, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4751, PETRI_PLACES=216, PETRI_TRANSITIONS=355} [2024-05-12 13:30:15,907 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 163 predicate places. [2024-05-12 13:30:15,907 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 355 transitions, 4751 flow [2024-05-12 13:30:15,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:30:15,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:30:15,908 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:30:15,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-05-12 13:30:15,908 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:30:15,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:30:15,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1446449255, now seen corresponding path program 1 times [2024-05-12 13:30:15,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:30:15,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806690885] [2024-05-12 13:30:15,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:30:15,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:30:15,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:30:16,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:30:16,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:30:16,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806690885] [2024-05-12 13:30:16,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806690885] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:30:16,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:30:16,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:30:16,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671463981] [2024-05-12 13:30:16,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:30:16,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:30:16,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:30:16,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:30:16,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:30:16,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:30:16,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 355 transitions, 4751 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:30:16,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:30:16,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:30:16,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:30:18,606 INFO L124 PetriNetUnfolderBase]: 6072/9491 cut-off events. [2024-05-12 13:30:18,606 INFO L125 PetriNetUnfolderBase]: For 266738/266740 co-relation queries the response was YES. [2024-05-12 13:30:18,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63181 conditions, 9491 events. 6072/9491 cut-off events. For 266738/266740 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 58673 event pairs, 1799 based on Foata normal form. 2/9294 useless extension candidates. Maximal degree in co-relation 63075. Up to 8676 conditions per place. [2024-05-12 13:30:18,714 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 361 selfloop transitions, 28 changer transitions 0/397 dead transitions. [2024-05-12 13:30:18,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 397 transitions, 5840 flow [2024-05-12 13:30:18,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:30:18,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:30:18,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 169 transitions. [2024-05-12 13:30:18,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.449468085106383 [2024-05-12 13:30:18,716 INFO L175 Difference]: Start difference. First operand has 216 places, 355 transitions, 4751 flow. Second operand 8 states and 169 transitions. [2024-05-12 13:30:18,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 397 transitions, 5840 flow [2024-05-12 13:30:19,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 397 transitions, 5640 flow, removed 57 selfloop flow, removed 4 redundant places. [2024-05-12 13:30:19,351 INFO L231 Difference]: Finished difference. Result has 221 places, 365 transitions, 4812 flow [2024-05-12 13:30:19,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4565, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4812, PETRI_PLACES=221, PETRI_TRANSITIONS=365} [2024-05-12 13:30:19,351 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 168 predicate places. [2024-05-12 13:30:19,352 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 365 transitions, 4812 flow [2024-05-12 13:30:19,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:30:19,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:30:19,352 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:30:19,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-05-12 13:30:19,352 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:30:19,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:30:19,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1888529817, now seen corresponding path program 1 times [2024-05-12 13:30:19,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:30:19,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911968686] [2024-05-12 13:30:19,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:30:19,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:30:19,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:30:20,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:30:20,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:30:20,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911968686] [2024-05-12 13:30:20,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911968686] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:30:20,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:30:20,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:30:20,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489337348] [2024-05-12 13:30:20,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:30:20,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:30:20,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:30:20,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:30:20,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:30:20,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:30:20,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 365 transitions, 4812 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:30:20,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:30:20,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:30:20,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:30:21,884 INFO L124 PetriNetUnfolderBase]: 6112/9557 cut-off events. [2024-05-12 13:30:21,885 INFO L125 PetriNetUnfolderBase]: For 271352/271378 co-relation queries the response was YES. [2024-05-12 13:30:21,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62881 conditions, 9557 events. 6112/9557 cut-off events. For 271352/271378 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 59414 event pairs, 1743 based on Foata normal form. 24/9376 useless extension candidates. Maximal degree in co-relation 62773. Up to 8542 conditions per place. [2024-05-12 13:30:22,002 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 359 selfloop transitions, 44 changer transitions 0/411 dead transitions. [2024-05-12 13:30:22,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 411 transitions, 5908 flow [2024-05-12 13:30:22,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:30:22,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:30:22,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 183 transitions. [2024-05-12 13:30:22,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4867021276595745 [2024-05-12 13:30:22,004 INFO L175 Difference]: Start difference. First operand has 221 places, 365 transitions, 4812 flow. Second operand 8 states and 183 transitions. [2024-05-12 13:30:22,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 411 transitions, 5908 flow [2024-05-12 13:30:22,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 411 transitions, 5774 flow, removed 56 selfloop flow, removed 4 redundant places. [2024-05-12 13:30:22,672 INFO L231 Difference]: Finished difference. Result has 225 places, 369 transitions, 4865 flow [2024-05-12 13:30:22,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4678, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4865, PETRI_PLACES=225, PETRI_TRANSITIONS=369} [2024-05-12 13:30:22,673 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 172 predicate places. [2024-05-12 13:30:22,673 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 369 transitions, 4865 flow [2024-05-12 13:30:22,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:30:22,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:30:22,673 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:30:22,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-05-12 13:30:22,673 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:30:22,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:30:22,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1003488635, now seen corresponding path program 1 times [2024-05-12 13:30:22,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:30:22,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337764688] [2024-05-12 13:30:22,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:30:22,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:30:22,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:30:23,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:30:23,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:30:23,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337764688] [2024-05-12 13:30:23,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337764688] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:30:23,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:30:23,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:30:23,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449636476] [2024-05-12 13:30:23,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:30:23,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:30:23,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:30:23,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:30:23,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:30:23,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:30:23,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 369 transitions, 4865 flow. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 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) [2024-05-12 13:30:23,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:30:23,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:30:23,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:30:25,086 INFO L124 PetriNetUnfolderBase]: 6152/9615 cut-off events. [2024-05-12 13:30:25,086 INFO L125 PetriNetUnfolderBase]: For 283625/283639 co-relation queries the response was YES. [2024-05-12 13:30:25,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64401 conditions, 9615 events. 6152/9615 cut-off events. For 283625/283639 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 59736 event pairs, 1758 based on Foata normal form. 10/9416 useless extension candidates. Maximal degree in co-relation 64291. Up to 8614 conditions per place. [2024-05-12 13:30:25,207 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 358 selfloop transitions, 41 changer transitions 0/407 dead transitions. [2024-05-12 13:30:25,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 407 transitions, 5883 flow [2024-05-12 13:30:25,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:30:25,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:30:25,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 159 transitions. [2024-05-12 13:30:25,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48328267477203646 [2024-05-12 13:30:25,224 INFO L175 Difference]: Start difference. First operand has 225 places, 369 transitions, 4865 flow. Second operand 7 states and 159 transitions. [2024-05-12 13:30:25,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 407 transitions, 5883 flow [2024-05-12 13:30:25,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 407 transitions, 5728 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-05-12 13:30:26,006 INFO L231 Difference]: Finished difference. Result has 226 places, 374 transitions, 4885 flow [2024-05-12 13:30:26,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4712, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4885, PETRI_PLACES=226, PETRI_TRANSITIONS=374} [2024-05-12 13:30:26,011 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 173 predicate places. [2024-05-12 13:30:26,011 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 374 transitions, 4885 flow [2024-05-12 13:30:26,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 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) [2024-05-12 13:30:26,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:30:26,012 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:30:26,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-05-12 13:30:26,012 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:30:26,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:30:26,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1009232315, now seen corresponding path program 2 times [2024-05-12 13:30:26,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:30:26,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462105077] [2024-05-12 13:30:26,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:30:26,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:30:26,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:30:26,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:30:26,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:30:26,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462105077] [2024-05-12 13:30:26,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462105077] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:30:26,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:30:26,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:30:26,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91285283] [2024-05-12 13:30:26,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:30:26,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:30:26,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:30:26,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:30:26,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:30:26,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:30:26,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 374 transitions, 4885 flow. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 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) [2024-05-12 13:30:26,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:30:26,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:30:26,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:30:28,480 INFO L124 PetriNetUnfolderBase]: 6427/10055 cut-off events. [2024-05-12 13:30:28,481 INFO L125 PetriNetUnfolderBase]: For 300136/300150 co-relation queries the response was YES. [2024-05-12 13:30:28,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67743 conditions, 10055 events. 6427/10055 cut-off events. For 300136/300150 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 62954 event pairs, 1786 based on Foata normal form. 12/9842 useless extension candidates. Maximal degree in co-relation 67632. Up to 8815 conditions per place. [2024-05-12 13:30:28,613 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 372 selfloop transitions, 63 changer transitions 0/443 dead transitions. [2024-05-12 13:30:28,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 443 transitions, 6728 flow [2024-05-12 13:30:28,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:30:28,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:30:28,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 174 transitions. [2024-05-12 13:30:28,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4627659574468085 [2024-05-12 13:30:28,615 INFO L175 Difference]: Start difference. First operand has 226 places, 374 transitions, 4885 flow. Second operand 8 states and 174 transitions. [2024-05-12 13:30:28,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 443 transitions, 6728 flow [2024-05-12 13:30:29,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 443 transitions, 6618 flow, removed 28 selfloop flow, removed 3 redundant places. [2024-05-12 13:30:29,314 INFO L231 Difference]: Finished difference. Result has 234 places, 406 transitions, 5550 flow [2024-05-12 13:30:29,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4818, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5550, PETRI_PLACES=234, PETRI_TRANSITIONS=406} [2024-05-12 13:30:29,314 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 181 predicate places. [2024-05-12 13:30:29,314 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 406 transitions, 5550 flow [2024-05-12 13:30:29,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 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) [2024-05-12 13:30:29,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:30:29,315 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:30:29,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-05-12 13:30:29,315 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:30:29,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:30:29,315 INFO L85 PathProgramCache]: Analyzing trace with hash 253300317, now seen corresponding path program 3 times [2024-05-12 13:30:29,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:30:29,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093922220] [2024-05-12 13:30:29,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:30:29,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:30:29,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:30:30,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:30:30,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:30:30,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093922220] [2024-05-12 13:30:30,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093922220] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:30:30,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:30:30,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:30:30,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115315367] [2024-05-12 13:30:30,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:30:30,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:30:30,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:30:30,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:30:30,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:30:30,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:30:30,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 406 transitions, 5550 flow. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 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) [2024-05-12 13:30:30,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:30:30,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:30:30,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:30:31,845 INFO L124 PetriNetUnfolderBase]: 6624/10359 cut-off events. [2024-05-12 13:30:31,845 INFO L125 PetriNetUnfolderBase]: For 313531/313545 co-relation queries the response was YES. [2024-05-12 13:30:31,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70627 conditions, 10359 events. 6624/10359 cut-off events. For 313531/313545 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 65104 event pairs, 1956 based on Foata normal form. 12/10142 useless extension candidates. Maximal degree in co-relation 70512. Up to 8989 conditions per place. [2024-05-12 13:30:31,985 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 378 selfloop transitions, 89 changer transitions 0/475 dead transitions. [2024-05-12 13:30:31,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 475 transitions, 7308 flow [2024-05-12 13:30:31,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:30:31,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:30:31,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 184 transitions. [2024-05-12 13:30:31,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48936170212765956 [2024-05-12 13:30:31,986 INFO L175 Difference]: Start difference. First operand has 234 places, 406 transitions, 5550 flow. Second operand 8 states and 184 transitions. [2024-05-12 13:30:31,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 475 transitions, 7308 flow [2024-05-12 13:30:32,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 475 transitions, 7238 flow, removed 34 selfloop flow, removed 1 redundant places. [2024-05-12 13:30:32,920 INFO L231 Difference]: Finished difference. Result has 243 places, 435 transitions, 6220 flow [2024-05-12 13:30:32,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5514, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6220, PETRI_PLACES=243, PETRI_TRANSITIONS=435} [2024-05-12 13:30:32,921 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 190 predicate places. [2024-05-12 13:30:32,921 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 435 transitions, 6220 flow [2024-05-12 13:30:32,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 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) [2024-05-12 13:30:32,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:30:32,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:30:32,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-05-12 13:30:32,922 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:30:32,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:30:32,922 INFO L85 PathProgramCache]: Analyzing trace with hash -2119551307, now seen corresponding path program 2 times [2024-05-12 13:30:32,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:30:32,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242021494] [2024-05-12 13:30:32,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:30:32,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:30:32,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:30:33,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:30:33,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:30:33,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242021494] [2024-05-12 13:30:33,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242021494] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:30:33,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:30:33,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:30:33,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463220539] [2024-05-12 13:30:33,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:30:33,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:30:33,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:30:33,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:30:33,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:30:33,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:30:33,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 435 transitions, 6220 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:30:33,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:30:33,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:30:33,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:30:35,833 INFO L124 PetriNetUnfolderBase]: 6795/10613 cut-off events. [2024-05-12 13:30:35,833 INFO L125 PetriNetUnfolderBase]: For 334986/335000 co-relation queries the response was YES. [2024-05-12 13:30:35,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73875 conditions, 10613 events. 6795/10613 cut-off events. For 334986/335000 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 66965 event pairs, 1962 based on Foata normal form. 12/10392 useless extension candidates. Maximal degree in co-relation 73755. Up to 8990 conditions per place. [2024-05-12 13:30:35,931 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 396 selfloop transitions, 94 changer transitions 0/498 dead transitions. [2024-05-12 13:30:35,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 498 transitions, 7996 flow [2024-05-12 13:30:35,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:30:35,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:30:35,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 207 transitions. [2024-05-12 13:30:35,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48936170212765956 [2024-05-12 13:30:35,933 INFO L175 Difference]: Start difference. First operand has 243 places, 435 transitions, 6220 flow. Second operand 9 states and 207 transitions. [2024-05-12 13:30:35,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 498 transitions, 7996 flow [2024-05-12 13:30:36,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 498 transitions, 7885 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-05-12 13:30:36,989 INFO L231 Difference]: Finished difference. Result has 250 places, 448 transitions, 6560 flow [2024-05-12 13:30:36,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6109, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6560, PETRI_PLACES=250, PETRI_TRANSITIONS=448} [2024-05-12 13:30:36,991 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 197 predicate places. [2024-05-12 13:30:36,991 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 448 transitions, 6560 flow [2024-05-12 13:30:36,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:30:36,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:30:36,991 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:30:36,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-05-12 13:30:36,991 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:30:36,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:30:36,992 INFO L85 PathProgramCache]: Analyzing trace with hash 817840553, now seen corresponding path program 1 times [2024-05-12 13:30:36,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:30:36,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571643957] [2024-05-12 13:30:36,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:30:36,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:30:37,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:30:37,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:30:37,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:30:37,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571643957] [2024-05-12 13:30:37,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571643957] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:30:37,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:30:37,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:30:37,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817617539] [2024-05-12 13:30:37,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:30:37,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:30:37,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:30:37,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:30:37,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:30:37,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:30:37,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 448 transitions, 6560 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:30:37,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:30:37,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:30:37,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:30:40,049 INFO L124 PetriNetUnfolderBase]: 6816/10677 cut-off events. [2024-05-12 13:30:40,049 INFO L125 PetriNetUnfolderBase]: For 358028/358028 co-relation queries the response was YES. [2024-05-12 13:30:40,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75827 conditions, 10677 events. 6816/10677 cut-off events. For 358028/358028 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 67869 event pairs, 2360 based on Foata normal form. 1/10438 useless extension candidates. Maximal degree in co-relation 75705. Up to 9663 conditions per place. [2024-05-12 13:30:40,167 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 450 selfloop transitions, 48 changer transitions 0/506 dead transitions. [2024-05-12 13:30:40,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 506 transitions, 8192 flow [2024-05-12 13:30:40,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:30:40,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:30:40,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 195 transitions. [2024-05-12 13:30:40,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46099290780141844 [2024-05-12 13:30:40,168 INFO L175 Difference]: Start difference. First operand has 250 places, 448 transitions, 6560 flow. Second operand 9 states and 195 transitions. [2024-05-12 13:30:40,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 506 transitions, 8192 flow [2024-05-12 13:30:41,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 506 transitions, 7986 flow, removed 51 selfloop flow, removed 5 redundant places. [2024-05-12 13:30:41,157 INFO L231 Difference]: Finished difference. Result has 257 places, 473 transitions, 7035 flow [2024-05-12 13:30:41,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6362, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7035, PETRI_PLACES=257, PETRI_TRANSITIONS=473} [2024-05-12 13:30:41,157 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 204 predicate places. [2024-05-12 13:30:41,158 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 473 transitions, 7035 flow [2024-05-12 13:30:41,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:30:41,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:30:41,158 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:30:41,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-05-12 13:30:41,158 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:30:41,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:30:41,158 INFO L85 PathProgramCache]: Analyzing trace with hash -2119563397, now seen corresponding path program 3 times [2024-05-12 13:30:41,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:30:41,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263362243] [2024-05-12 13:30:41,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:30:41,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:30:41,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:30:41,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:30:41,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:30:41,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263362243] [2024-05-12 13:30:41,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263362243] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:30:41,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:30:41,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:30:41,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373618714] [2024-05-12 13:30:41,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:30:41,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:30:41,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:30:41,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:30:41,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:30:41,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:30:41,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 473 transitions, 7035 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:30:41,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:30:41,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:30:41,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:30:44,088 INFO L124 PetriNetUnfolderBase]: 6835/10679 cut-off events. [2024-05-12 13:30:44,089 INFO L125 PetriNetUnfolderBase]: For 370130/370142 co-relation queries the response was YES. [2024-05-12 13:30:44,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77041 conditions, 10679 events. 6835/10679 cut-off events. For 370130/370142 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 67516 event pairs, 1957 based on Foata normal form. 10/10454 useless extension candidates. Maximal degree in co-relation 76914. Up to 9040 conditions per place. [2024-05-12 13:30:44,235 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 416 selfloop transitions, 102 changer transitions 0/526 dead transitions. [2024-05-12 13:30:44,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 526 transitions, 8659 flow [2024-05-12 13:30:44,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:30:44,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:30:44,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 207 transitions. [2024-05-12 13:30:44,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48936170212765956 [2024-05-12 13:30:44,242 INFO L175 Difference]: Start difference. First operand has 257 places, 473 transitions, 7035 flow. Second operand 9 states and 207 transitions. [2024-05-12 13:30:44,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 526 transitions, 8659 flow [2024-05-12 13:30:45,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 526 transitions, 8061 flow, removed 176 selfloop flow, removed 5 redundant places. [2024-05-12 13:30:45,419 INFO L231 Difference]: Finished difference. Result has 262 places, 480 transitions, 6900 flow [2024-05-12 13:30:45,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6490, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=473, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6900, PETRI_PLACES=262, PETRI_TRANSITIONS=480} [2024-05-12 13:30:45,420 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 209 predicate places. [2024-05-12 13:30:45,420 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 480 transitions, 6900 flow [2024-05-12 13:30:45,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:30:45,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:30:45,421 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:30:45,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-05-12 13:30:45,421 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:30:45,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:30:45,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1009228719, now seen corresponding path program 4 times [2024-05-12 13:30:45,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:30:45,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039709034] [2024-05-12 13:30:45,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:30:45,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:30:45,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:30:46,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:30:46,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:30:46,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039709034] [2024-05-12 13:30:46,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039709034] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:30:46,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:30:46,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:30:46,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568502570] [2024-05-12 13:30:46,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:30:46,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:30:46,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:30:46,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:30:46,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:30:46,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:30:46,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 480 transitions, 6900 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:30:46,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:30:46,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:30:46,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:30:48,304 INFO L124 PetriNetUnfolderBase]: 6969/10881 cut-off events. [2024-05-12 13:30:48,305 INFO L125 PetriNetUnfolderBase]: For 387478/387490 co-relation queries the response was YES. [2024-05-12 13:30:48,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80100 conditions, 10881 events. 6969/10881 cut-off events. For 387478/387490 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 69086 event pairs, 1781 based on Foata normal form. 10/10660 useless extension candidates. Maximal degree in co-relation 79971. Up to 8912 conditions per place. [2024-05-12 13:30:48,449 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 394 selfloop transitions, 128 changer transitions 0/530 dead transitions. [2024-05-12 13:30:48,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 530 transitions, 8688 flow [2024-05-12 13:30:48,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:30:48,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:30:48,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 184 transitions. [2024-05-12 13:30:48,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48936170212765956 [2024-05-12 13:30:48,450 INFO L175 Difference]: Start difference. First operand has 262 places, 480 transitions, 6900 flow. Second operand 8 states and 184 transitions. [2024-05-12 13:30:48,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 530 transitions, 8688 flow [2024-05-12 13:30:50,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 530 transitions, 8512 flow, removed 32 selfloop flow, removed 4 redundant places. [2024-05-12 13:30:50,077 INFO L231 Difference]: Finished difference. Result has 267 places, 492 transitions, 7386 flow [2024-05-12 13:30:50,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6724, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=480, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7386, PETRI_PLACES=267, PETRI_TRANSITIONS=492} [2024-05-12 13:30:50,077 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 214 predicate places. [2024-05-12 13:30:50,077 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 492 transitions, 7386 flow [2024-05-12 13:30:50,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:30:50,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:30:50,078 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:30:50,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-05-12 13:30:50,078 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:30:50,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:30:50,079 INFO L85 PathProgramCache]: Analyzing trace with hash 2065295781, now seen corresponding path program 2 times [2024-05-12 13:30:50,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:30:50,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478221926] [2024-05-12 13:30:50,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:30:50,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:30:50,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:30:51,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:30:51,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:30:51,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478221926] [2024-05-12 13:30:51,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478221926] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:30:51,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:30:51,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:30:51,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927887837] [2024-05-12 13:30:51,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:30:51,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:30:51,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:30:51,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:30:51,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:30:51,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:30:51,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 492 transitions, 7386 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:30:51,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:30:51,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:30:51,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:30:54,096 INFO L124 PetriNetUnfolderBase]: 6990/10940 cut-off events. [2024-05-12 13:30:54,096 INFO L125 PetriNetUnfolderBase]: For 412372/412372 co-relation queries the response was YES. [2024-05-12 13:30:54,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82585 conditions, 10940 events. 6990/10940 cut-off events. For 412372/412372 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 69731 event pairs, 2295 based on Foata normal form. 1/10700 useless extension candidates. Maximal degree in co-relation 82454. Up to 9869 conditions per place. [2024-05-12 13:30:54,431 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 467 selfloop transitions, 63 changer transitions 0/538 dead transitions. [2024-05-12 13:30:54,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 538 transitions, 9019 flow [2024-05-12 13:30:54,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:30:54,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:30:54,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 172 transitions. [2024-05-12 13:30:54,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4574468085106383 [2024-05-12 13:30:54,433 INFO L175 Difference]: Start difference. First operand has 267 places, 492 transitions, 7386 flow. Second operand 8 states and 172 transitions. [2024-05-12 13:30:54,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 538 transitions, 9019 flow [2024-05-12 13:30:55,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 538 transitions, 8849 flow, removed 58 selfloop flow, removed 3 redundant places. [2024-05-12 13:30:55,724 INFO L231 Difference]: Finished difference. Result has 274 places, 510 transitions, 7879 flow [2024-05-12 13:30:55,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7216, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=492, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=435, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7879, PETRI_PLACES=274, PETRI_TRANSITIONS=510} [2024-05-12 13:30:55,736 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 221 predicate places. [2024-05-12 13:30:55,737 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 510 transitions, 7879 flow [2024-05-12 13:30:55,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:30:55,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:30:55,737 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:30:55,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-05-12 13:30:55,737 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:30:55,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:30:55,738 INFO L85 PathProgramCache]: Analyzing trace with hash 2065295347, now seen corresponding path program 5 times [2024-05-12 13:30:55,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:30:55,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070246789] [2024-05-12 13:30:55,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:30:55,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:30:55,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:30:56,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:30:56,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:30:56,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070246789] [2024-05-12 13:30:56,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070246789] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:30:56,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:30:56,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:30:56,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773632493] [2024-05-12 13:30:56,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:30:56,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:30:56,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:30:56,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:30:56,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:30:56,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:30:56,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 510 transitions, 7879 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:30:56,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:30:56,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:30:56,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:30:59,331 INFO L124 PetriNetUnfolderBase]: 6986/10880 cut-off events. [2024-05-12 13:30:59,332 INFO L125 PetriNetUnfolderBase]: For 424040/424052 co-relation queries the response was YES. [2024-05-12 13:30:59,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83497 conditions, 10880 events. 6986/10880 cut-off events. For 424040/424052 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 68816 event pairs, 1764 based on Foata normal form. 10/10662 useless extension candidates. Maximal degree in co-relation 83362. Up to 8938 conditions per place. [2024-05-12 13:30:59,578 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 410 selfloop transitions, 132 changer transitions 0/550 dead transitions. [2024-05-12 13:30:59,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 550 transitions, 9475 flow [2024-05-12 13:30:59,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:30:59,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:30:59,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 183 transitions. [2024-05-12 13:30:59,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4867021276595745 [2024-05-12 13:30:59,579 INFO L175 Difference]: Start difference. First operand has 274 places, 510 transitions, 7879 flow. Second operand 8 states and 183 transitions. [2024-05-12 13:30:59,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 550 transitions, 9475 flow [2024-05-12 13:31:01,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 550 transitions, 9020 flow, removed 213 selfloop flow, removed 3 redundant places. [2024-05-12 13:31:01,031 INFO L231 Difference]: Finished difference. Result has 279 places, 510 transitions, 7756 flow [2024-05-12 13:31:01,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7476, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=510, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7756, PETRI_PLACES=279, PETRI_TRANSITIONS=510} [2024-05-12 13:31:01,032 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 226 predicate places. [2024-05-12 13:31:01,032 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 510 transitions, 7756 flow [2024-05-12 13:31:01,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:01,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:01,033 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:01,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-05-12 13:31:01,033 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:31:01,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:01,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1585469621, now seen corresponding path program 4 times [2024-05-12 13:31:01,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:01,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657023603] [2024-05-12 13:31:01,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:01,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:01,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:01,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:31:01,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:01,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657023603] [2024-05-12 13:31:01,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657023603] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:01,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:01,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:31:01,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555221113] [2024-05-12 13:31:01,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:01,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:31:01,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:01,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:31:01,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:31:01,838 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:31:01,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 510 transitions, 7756 flow. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 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) [2024-05-12 13:31:01,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:01,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:31:01,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:04,449 INFO L124 PetriNetUnfolderBase]: 6972/10881 cut-off events. [2024-05-12 13:31:04,449 INFO L125 PetriNetUnfolderBase]: For 421094/421094 co-relation queries the response was YES. [2024-05-12 13:31:04,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83498 conditions, 10881 events. 6972/10881 cut-off events. For 421094/421094 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 68844 event pairs, 1820 based on Foata normal form. 2/10635 useless extension candidates. Maximal degree in co-relation 83361. Up to 9697 conditions per place. [2024-05-12 13:31:04,568 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 469 selfloop transitions, 62 changer transitions 0/539 dead transitions. [2024-05-12 13:31:04,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 539 transitions, 8976 flow [2024-05-12 13:31:04,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:31:04,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:31:04,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 156 transitions. [2024-05-12 13:31:04,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47416413373860183 [2024-05-12 13:31:04,570 INFO L175 Difference]: Start difference. First operand has 279 places, 510 transitions, 7756 flow. Second operand 7 states and 156 transitions. [2024-05-12 13:31:04,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 539 transitions, 8976 flow [2024-05-12 13:31:05,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 539 transitions, 8677 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-05-12 13:31:05,950 INFO L231 Difference]: Finished difference. Result has 280 places, 510 transitions, 7591 flow [2024-05-12 13:31:05,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7457, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=510, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=448, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7591, PETRI_PLACES=280, PETRI_TRANSITIONS=510} [2024-05-12 13:31:05,951 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 227 predicate places. [2024-05-12 13:31:05,951 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 510 transitions, 7591 flow [2024-05-12 13:31:05,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 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) [2024-05-12 13:31:05,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:05,951 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:05,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-05-12 13:31:05,951 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:31:05,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:05,952 INFO L85 PathProgramCache]: Analyzing trace with hash -2083911237, now seen corresponding path program 5 times [2024-05-12 13:31:05,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:05,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165267880] [2024-05-12 13:31:05,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:05,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:05,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:06,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:31:06,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:06,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165267880] [2024-05-12 13:31:06,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165267880] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:06,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:06,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:31:06,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034551250] [2024-05-12 13:31:06,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:06,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:31:06,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:06,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:31:06,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:31:06,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:31:06,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 510 transitions, 7591 flow. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 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) [2024-05-12 13:31:06,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:06,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:31:06,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:09,486 INFO L124 PetriNetUnfolderBase]: 6992/10913 cut-off events. [2024-05-12 13:31:09,487 INFO L125 PetriNetUnfolderBase]: For 422663/422663 co-relation queries the response was YES. [2024-05-12 13:31:09,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83171 conditions, 10913 events. 6992/10913 cut-off events. For 422663/422663 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 69091 event pairs, 1795 based on Foata normal form. 1/10666 useless extension candidates. Maximal degree in co-relation 83033. Up to 9633 conditions per place. [2024-05-12 13:31:09,602 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 455 selfloop transitions, 80 changer transitions 0/543 dead transitions. [2024-05-12 13:31:09,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 543 transitions, 8919 flow [2024-05-12 13:31:09,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:31:09,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:31:09,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 157 transitions. [2024-05-12 13:31:09,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47720364741641336 [2024-05-12 13:31:09,604 INFO L175 Difference]: Start difference. First operand has 280 places, 510 transitions, 7591 flow. Second operand 7 states and 157 transitions. [2024-05-12 13:31:09,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 543 transitions, 8919 flow [2024-05-12 13:31:11,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 543 transitions, 8633 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-05-12 13:31:11,197 INFO L231 Difference]: Finished difference. Result has 281 places, 514 transitions, 7574 flow [2024-05-12 13:31:11,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7305, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=510, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=430, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7574, PETRI_PLACES=281, PETRI_TRANSITIONS=514} [2024-05-12 13:31:11,198 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 228 predicate places. [2024-05-12 13:31:11,198 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 514 transitions, 7574 flow [2024-05-12 13:31:11,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 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) [2024-05-12 13:31:11,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:11,198 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:11,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-05-12 13:31:11,198 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:31:11,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:11,199 INFO L85 PathProgramCache]: Analyzing trace with hash -859202053, now seen corresponding path program 6 times [2024-05-12 13:31:11,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:11,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302176405] [2024-05-12 13:31:11,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:11,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:11,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:11,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:31:11,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:11,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302176405] [2024-05-12 13:31:11,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302176405] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:11,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:11,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:31:11,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973525274] [2024-05-12 13:31:11,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:11,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:31:11,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:11,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:31:11,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:31:11,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:31:11,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 514 transitions, 7574 flow. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 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) [2024-05-12 13:31:11,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:11,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:31:11,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:14,370 INFO L124 PetriNetUnfolderBase]: 7012/10917 cut-off events. [2024-05-12 13:31:14,371 INFO L125 PetriNetUnfolderBase]: For 430581/430593 co-relation queries the response was YES. [2024-05-12 13:31:14,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83669 conditions, 10917 events. 7012/10917 cut-off events. For 430581/430593 co-relation queries the response was YES. Maximal size of possible extension queue 453. Compared 68923 event pairs, 1736 based on Foata normal form. 9/10684 useless extension candidates. Maximal degree in co-relation 83529. Up to 9240 conditions per place. [2024-05-12 13:31:14,672 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 406 selfloop transitions, 135 changer transitions 0/549 dead transitions. [2024-05-12 13:31:14,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 549 transitions, 9073 flow [2024-05-12 13:31:14,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:31:14,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:31:14,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 158 transitions. [2024-05-12 13:31:14,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48024316109422494 [2024-05-12 13:31:14,674 INFO L175 Difference]: Start difference. First operand has 281 places, 514 transitions, 7574 flow. Second operand 7 states and 158 transitions. [2024-05-12 13:31:14,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 549 transitions, 9073 flow [2024-05-12 13:31:15,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 549 transitions, 8913 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-05-12 13:31:15,896 INFO L231 Difference]: Finished difference. Result has 284 places, 517 transitions, 7747 flow [2024-05-12 13:31:15,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7414, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=514, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7747, PETRI_PLACES=284, PETRI_TRANSITIONS=517} [2024-05-12 13:31:15,897 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 231 predicate places. [2024-05-12 13:31:15,897 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 517 transitions, 7747 flow [2024-05-12 13:31:15,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 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) [2024-05-12 13:31:15,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:15,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:15,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-05-12 13:31:15,897 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:31:15,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:15,898 INFO L85 PathProgramCache]: Analyzing trace with hash -864915973, now seen corresponding path program 7 times [2024-05-12 13:31:15,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:15,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507584753] [2024-05-12 13:31:15,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:15,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:15,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:16,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:31:16,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:16,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507584753] [2024-05-12 13:31:16,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507584753] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:16,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:16,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:31:16,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666837510] [2024-05-12 13:31:16,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:16,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:31:16,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:16,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:31:16,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:31:16,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:31:16,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 517 transitions, 7747 flow. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 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) [2024-05-12 13:31:16,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:16,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:31:16,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:19,220 INFO L124 PetriNetUnfolderBase]: 7004/10936 cut-off events. [2024-05-12 13:31:19,220 INFO L125 PetriNetUnfolderBase]: For 439438/439450 co-relation queries the response was YES. [2024-05-12 13:31:19,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84054 conditions, 10936 events. 7004/10936 cut-off events. For 439438/439450 co-relation queries the response was YES. Maximal size of possible extension queue 453. Compared 69339 event pairs, 1756 based on Foata normal form. 10/10693 useless extension candidates. Maximal degree in co-relation 83913. Up to 9232 conditions per place. [2024-05-12 13:31:19,337 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 419 selfloop transitions, 121 changer transitions 0/548 dead transitions. [2024-05-12 13:31:19,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 548 transitions, 9072 flow [2024-05-12 13:31:19,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:31:19,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:31:19,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 158 transitions. [2024-05-12 13:31:19,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48024316109422494 [2024-05-12 13:31:19,338 INFO L175 Difference]: Start difference. First operand has 284 places, 517 transitions, 7747 flow. Second operand 7 states and 158 transitions. [2024-05-12 13:31:19,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 548 transitions, 9072 flow [2024-05-12 13:31:20,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 548 transitions, 8739 flow, removed 38 selfloop flow, removed 5 redundant places. [2024-05-12 13:31:20,984 INFO L231 Difference]: Finished difference. Result has 286 places, 517 transitions, 7664 flow [2024-05-12 13:31:20,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7414, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=517, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7664, PETRI_PLACES=286, PETRI_TRANSITIONS=517} [2024-05-12 13:31:20,985 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 233 predicate places. [2024-05-12 13:31:20,985 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 517 transitions, 7664 flow [2024-05-12 13:31:20,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 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) [2024-05-12 13:31:20,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:20,985 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:20,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-05-12 13:31:20,985 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:31:20,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:20,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1890269159, now seen corresponding path program 3 times [2024-05-12 13:31:20,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:20,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787231577] [2024-05-12 13:31:20,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:20,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:21,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:22,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:31:22,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:22,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787231577] [2024-05-12 13:31:22,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787231577] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:22,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:22,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:31:22,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916976043] [2024-05-12 13:31:22,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:22,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:31:22,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:22,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:31:22,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:31:22,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:31:22,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 517 transitions, 7664 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:22,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:22,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:31:22,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:25,077 INFO L124 PetriNetUnfolderBase]: 7024/11005 cut-off events. [2024-05-12 13:31:25,078 INFO L125 PetriNetUnfolderBase]: For 449967/449967 co-relation queries the response was YES. [2024-05-12 13:31:25,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84153 conditions, 11005 events. 7024/11005 cut-off events. For 449967/449967 co-relation queries the response was YES. Maximal size of possible extension queue 458. Compared 70174 event pairs, 2701 based on Foata normal form. 1/10763 useless extension candidates. Maximal degree in co-relation 84012. Up to 9953 conditions per place. [2024-05-12 13:31:25,208 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 516 selfloop transitions, 33 changer transitions 0/557 dead transitions. [2024-05-12 13:31:25,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 557 transitions, 9072 flow [2024-05-12 13:31:25,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:31:25,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:31:25,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 189 transitions. [2024-05-12 13:31:25,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44680851063829785 [2024-05-12 13:31:25,209 INFO L175 Difference]: Start difference. First operand has 286 places, 517 transitions, 7664 flow. Second operand 9 states and 189 transitions. [2024-05-12 13:31:25,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 557 transitions, 9072 flow [2024-05-12 13:31:26,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 557 transitions, 8817 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-05-12 13:31:26,935 INFO L231 Difference]: Finished difference. Result has 289 places, 521 transitions, 7616 flow [2024-05-12 13:31:26,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7409, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=517, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=484, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7616, PETRI_PLACES=289, PETRI_TRANSITIONS=521} [2024-05-12 13:31:26,936 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 236 predicate places. [2024-05-12 13:31:26,936 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 521 transitions, 7616 flow [2024-05-12 13:31:26,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:26,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:26,937 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:26,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-05-12 13:31:26,937 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:31:26,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:26,937 INFO L85 PathProgramCache]: Analyzing trace with hash -864919569, now seen corresponding path program 6 times [2024-05-12 13:31:26,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:26,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057846204] [2024-05-12 13:31:26,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:26,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:26,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:27,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:31:27,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:27,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057846204] [2024-05-12 13:31:27,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057846204] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:27,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:27,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:31:27,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225116357] [2024-05-12 13:31:27,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:27,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:31:27,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:27,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:31:27,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:31:27,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:31:27,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 521 transitions, 7616 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:27,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:27,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:31:27,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:30,339 INFO L124 PetriNetUnfolderBase]: 7111/11100 cut-off events. [2024-05-12 13:31:30,340 INFO L125 PetriNetUnfolderBase]: For 474211/474223 co-relation queries the response was YES. [2024-05-12 13:31:30,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85898 conditions, 11100 events. 7111/11100 cut-off events. For 474211/474223 co-relation queries the response was YES. Maximal size of possible extension queue 460. Compared 70701 event pairs, 1804 based on Foata normal form. 10/10853 useless extension candidates. Maximal degree in co-relation 85756. Up to 8757 conditions per place. [2024-05-12 13:31:30,466 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 415 selfloop transitions, 153 changer transitions 0/576 dead transitions. [2024-05-12 13:31:30,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 576 transitions, 9802 flow [2024-05-12 13:31:30,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:31:30,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:31:30,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 185 transitions. [2024-05-12 13:31:30,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4920212765957447 [2024-05-12 13:31:30,468 INFO L175 Difference]: Start difference. First operand has 289 places, 521 transitions, 7616 flow. Second operand 8 states and 185 transitions. [2024-05-12 13:31:30,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 576 transitions, 9802 flow [2024-05-12 13:31:32,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 576 transitions, 9633 flow, removed 58 selfloop flow, removed 6 redundant places. [2024-05-12 13:31:32,037 INFO L231 Difference]: Finished difference. Result has 292 places, 533 transitions, 8157 flow [2024-05-12 13:31:32,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7447, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8157, PETRI_PLACES=292, PETRI_TRANSITIONS=533} [2024-05-12 13:31:32,039 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 239 predicate places. [2024-05-12 13:31:32,039 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 533 transitions, 8157 flow [2024-05-12 13:31:32,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:32,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:32,039 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:32,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-05-12 13:31:32,040 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:31:32,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:32,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1904553959, now seen corresponding path program 4 times [2024-05-12 13:31:32,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:32,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828571956] [2024-05-12 13:31:32,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:32,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:32,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:33,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:31:33,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:33,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828571956] [2024-05-12 13:31:33,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828571956] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:33,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:33,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:31:33,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53487421] [2024-05-12 13:31:33,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:33,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:31:33,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:33,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:31:33,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:31:33,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:31:33,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 533 transitions, 8157 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:33,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:33,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:31:33,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:35,554 INFO L124 PetriNetUnfolderBase]: 7114/11129 cut-off events. [2024-05-12 13:31:35,554 INFO L125 PetriNetUnfolderBase]: For 496026/496035 co-relation queries the response was YES. [2024-05-12 13:31:35,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88133 conditions, 11129 events. 7114/11129 cut-off events. For 496026/496035 co-relation queries the response was YES. Maximal size of possible extension queue 466. Compared 71165 event pairs, 2288 based on Foata normal form. 7/10886 useless extension candidates. Maximal degree in co-relation 87988. Up to 9997 conditions per place. [2024-05-12 13:31:35,678 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 490 selfloop transitions, 81 changer transitions 0/579 dead transitions. [2024-05-12 13:31:35,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 579 transitions, 9973 flow [2024-05-12 13:31:35,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:31:35,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:31:35,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 170 transitions. [2024-05-12 13:31:35,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4521276595744681 [2024-05-12 13:31:35,680 INFO L175 Difference]: Start difference. First operand has 292 places, 533 transitions, 8157 flow. Second operand 8 states and 170 transitions. [2024-05-12 13:31:35,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 579 transitions, 9973 flow [2024-05-12 13:31:37,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 579 transitions, 9655 flow, removed 89 selfloop flow, removed 3 redundant places. [2024-05-12 13:31:37,456 INFO L231 Difference]: Finished difference. Result has 299 places, 555 transitions, 8625 flow [2024-05-12 13:31:37,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7845, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=533, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=459, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8625, PETRI_PLACES=299, PETRI_TRANSITIONS=555} [2024-05-12 13:31:37,457 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 246 predicate places. [2024-05-12 13:31:37,457 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 555 transitions, 8625 flow [2024-05-12 13:31:37,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:37,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:37,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:37,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-05-12 13:31:37,458 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:31:37,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:37,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1517258397, now seen corresponding path program 7 times [2024-05-12 13:31:37,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:37,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358811846] [2024-05-12 13:31:37,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:37,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:37,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:38,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:31:38,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:38,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358811846] [2024-05-12 13:31:38,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358811846] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:38,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:38,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:31:38,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566502641] [2024-05-12 13:31:38,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:38,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:31:38,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:38,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:31:38,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:31:38,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:31:38,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 555 transitions, 8625 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:38,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:38,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:31:38,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:41,200 INFO L124 PetriNetUnfolderBase]: 7202/11290 cut-off events. [2024-05-12 13:31:41,200 INFO L125 PetriNetUnfolderBase]: For 511393/511405 co-relation queries the response was YES. [2024-05-12 13:31:41,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90052 conditions, 11290 events. 7202/11290 cut-off events. For 511393/511405 co-relation queries the response was YES. Maximal size of possible extension queue 472. Compared 72646 event pairs, 2690 based on Foata normal form. 10/11048 useless extension candidates. Maximal degree in co-relation 89903. Up to 10087 conditions per place. [2024-05-12 13:31:41,332 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 543 selfloop transitions, 50 changer transitions 0/601 dead transitions. [2024-05-12 13:31:41,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 601 transitions, 10439 flow [2024-05-12 13:31:41,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:31:41,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:31:41,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 176 transitions. [2024-05-12 13:31:41,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46808510638297873 [2024-05-12 13:31:41,333 INFO L175 Difference]: Start difference. First operand has 299 places, 555 transitions, 8625 flow. Second operand 8 states and 176 transitions. [2024-05-12 13:31:41,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 601 transitions, 10439 flow [2024-05-12 13:31:43,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 601 transitions, 9908 flow, removed 231 selfloop flow, removed 3 redundant places. [2024-05-12 13:31:43,053 INFO L231 Difference]: Finished difference. Result has 305 places, 563 transitions, 8453 flow [2024-05-12 13:31:43,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8126, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=555, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=505, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8453, PETRI_PLACES=305, PETRI_TRANSITIONS=563} [2024-05-12 13:31:43,054 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 252 predicate places. [2024-05-12 13:31:43,054 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 563 transitions, 8453 flow [2024-05-12 13:31:43,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:43,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:43,058 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:43,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-05-12 13:31:43,058 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:31:43,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:43,058 INFO L85 PathProgramCache]: Analyzing trace with hash -864907479, now seen corresponding path program 8 times [2024-05-12 13:31:43,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:43,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69089332] [2024-05-12 13:31:43,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:43,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:43,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:43,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:31:43,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:43,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69089332] [2024-05-12 13:31:43,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69089332] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:43,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:43,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:31:43,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144103129] [2024-05-12 13:31:43,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:43,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:31:43,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:43,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:31:43,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:31:43,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:31:43,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 563 transitions, 8453 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:43,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:43,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:31:43,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:46,725 INFO L124 PetriNetUnfolderBase]: 7198/11224 cut-off events. [2024-05-12 13:31:46,726 INFO L125 PetriNetUnfolderBase]: For 512207/512219 co-relation queries the response was YES. [2024-05-12 13:31:46,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89839 conditions, 11224 events. 7198/11224 cut-off events. For 512207/512219 co-relation queries the response was YES. Maximal size of possible extension queue 470. Compared 71509 event pairs, 1803 based on Foata normal form. 10/10977 useless extension candidates. Maximal degree in co-relation 89687. Up to 8837 conditions per place. [2024-05-12 13:31:46,872 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 440 selfloop transitions, 160 changer transitions 0/608 dead transitions. [2024-05-12 13:31:46,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 608 transitions, 10389 flow [2024-05-12 13:31:46,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:31:46,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:31:46,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 185 transitions. [2024-05-12 13:31:46,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4920212765957447 [2024-05-12 13:31:46,874 INFO L175 Difference]: Start difference. First operand has 305 places, 563 transitions, 8453 flow. Second operand 8 states and 185 transitions. [2024-05-12 13:31:46,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 608 transitions, 10389 flow [2024-05-12 13:31:48,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 608 transitions, 9933 flow, removed 92 selfloop flow, removed 6 redundant places. [2024-05-12 13:31:48,511 INFO L231 Difference]: Finished difference. Result has 307 places, 563 transitions, 8326 flow [2024-05-12 13:31:48,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7997, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=563, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=403, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8326, PETRI_PLACES=307, PETRI_TRANSITIONS=563} [2024-05-12 13:31:48,511 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 254 predicate places. [2024-05-12 13:31:48,511 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 563 transitions, 8326 flow [2024-05-12 13:31:48,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:48,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:48,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:48,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-05-12 13:31:48,512 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:31:48,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:48,512 INFO L85 PathProgramCache]: Analyzing trace with hash 730903765, now seen corresponding path program 1 times [2024-05-12 13:31:48,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:48,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272192041] [2024-05-12 13:31:48,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:48,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:48,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat