./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix006_power.oepc_pso.oepc_rmo.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-05-07_14-17-48.files/protection/mix006_power.oepc_pso.oepc_rmo.oepc.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/mix006_power.oepc_pso.oepc_rmo.oepc.i ./goblint.2024-05-07_14-17-48.files/protection/mix006_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-wip.fs.witness-ghost-b44c828-m [2024-05-12 13:04:05,376 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-05-12 13:04:05,439 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-05-12 13:04:05,444 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-05-12 13:04:05,444 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-05-12 13:04:05,470 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-05-12 13:04:05,472 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-05-12 13:04:05,472 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-05-12 13:04:05,473 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-05-12 13:04:05,475 INFO L153 SettingsManager]: * Use memory slicer=true [2024-05-12 13:04:05,476 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-05-12 13:04:05,476 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-05-12 13:04:05,477 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-05-12 13:04:05,478 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-05-12 13:04:05,478 INFO L153 SettingsManager]: * Use SBE=true [2024-05-12 13:04:05,478 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-05-12 13:04:05,478 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-05-12 13:04:05,478 INFO L153 SettingsManager]: * sizeof long=4 [2024-05-12 13:04:05,479 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-05-12 13:04:05,479 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-05-12 13:04:05,479 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-05-12 13:04:05,479 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-05-12 13:04:05,479 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-05-12 13:04:05,480 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-05-12 13:04:05,480 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-05-12 13:04:05,480 INFO L153 SettingsManager]: * sizeof long double=12 [2024-05-12 13:04:05,480 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-05-12 13:04:05,480 INFO L153 SettingsManager]: * Use constant arrays=true [2024-05-12 13:04:05,481 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-05-12 13:04:05,481 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-05-12 13:04:05,482 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-05-12 13:04:05,482 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-05-12 13:04:05,482 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 13:04:05,482 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-05-12 13:04:05,483 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-05-12 13:04:05,483 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-05-12 13:04:05,483 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-05-12 13:04:05,483 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-05-12 13:04:05,483 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-05-12 13:04:05,483 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-05-12 13:04:05,483 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-05-12 13:04:05,484 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-05-12 13:04:05,484 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-05-12 13:04:05,484 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-05-12 13:04:05,737 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-05-12 13:04:05,759 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-05-12 13:04:05,761 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-05-12 13:04:05,762 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-05-12 13:04:05,763 INFO L274 PluginConnector]: Witness Parser initialized [2024-05-12 13:04:05,764 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-07_14-17-48.files/protection/mix006_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml [2024-05-12 13:04:05,936 INFO L270 PluginConnector]: Initializing CDTParser... [2024-05-12 13:04:05,936 INFO L274 PluginConnector]: CDTParser initialized [2024-05-12 13:04:05,937 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix006_power.oepc_pso.oepc_rmo.oepc.i [2024-05-12 13:04:07,065 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-05-12 13:04:07,301 INFO L384 CDTParser]: Found 1 translation units. [2024-05-12 13:04:07,310 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix006_power.oepc_pso.oepc_rmo.oepc.i [2024-05-12 13:04:07,324 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8e12696e/01f7ad65ea284744bdf5458e53cf8f28/FLAG5a35098d6 [2024-05-12 13:04:07,343 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8e12696e/01f7ad65ea284744bdf5458e53cf8f28 [2024-05-12 13:04:07,344 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-05-12 13:04:07,345 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-05-12 13:04:07,348 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-05-12 13:04:07,348 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-05-12 13:04:07,353 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-05-12 13:04:07,353 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:04:05" (1/2) ... [2024-05-12 13:04:07,354 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@465da13c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:04:07, skipping insertion in model container [2024-05-12 13:04:07,355 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:04:05" (1/2) ... [2024-05-12 13:04:07,357 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1ea42a8f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:04:07, skipping insertion in model container [2024-05-12 13:04:07,357 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 01:04:07" (2/2) ... [2024-05-12 13:04:07,358 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@465da13c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:04:07, skipping insertion in model container [2024-05-12 13:04:07,358 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 01:04:07" (2/2) ... [2024-05-12 13:04:07,359 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-05-12 13:04:07,441 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-05-12 13:04:07,442 INFO L97 edCorrectnessWitness]: Location invariant before [L848-L848] (((((((((((((((((((! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || ((0 <= z$w_buff1 && z$w_buff1 <= 1) && (z$w_buff1 == 0 || z$w_buff1 == 1)))) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= z$mem_tmp && z$mem_tmp <= 1) && (z$mem_tmp == 0 || z$mem_tmp == 1)))) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || (((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 2) && __unbuffered_p1_EAX <= 127) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)))) && (! multithreaded || ((0 <= z$w_buff0 && z$w_buff0 <= 1) && (z$w_buff0 == 0 || z$w_buff0 == 1)))) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || ((0 <= __unbuffered_p2_EBX && __unbuffered_p2_EBX <= 1) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)))) && (! multithreaded || z$read_delayed == (_Bool)0) [2024-05-12 13:04:07,442 INFO L97 edCorrectnessWitness]: Location invariant before [L846-L846] (((((((((((((((((((! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || ((0 <= z$w_buff1 && z$w_buff1 <= 1) && (z$w_buff1 == 0 || z$w_buff1 == 1)))) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= z$mem_tmp && z$mem_tmp <= 1) && (z$mem_tmp == 0 || z$mem_tmp == 1)))) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || (((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 2) && __unbuffered_p1_EAX <= 127) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)))) && (! multithreaded || ((0 <= z$w_buff0 && z$w_buff0 <= 1) && (z$w_buff0 == 0 || z$w_buff0 == 1)))) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || ((0 <= __unbuffered_p2_EBX && __unbuffered_p2_EBX <= 1) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)))) && (! multithreaded || z$read_delayed == (_Bool)0) [2024-05-12 13:04:07,443 INFO L97 edCorrectnessWitness]: Location invariant before [L849-L849] (((((((((((((((((((! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || ((0 <= z$w_buff1 && z$w_buff1 <= 1) && (z$w_buff1 == 0 || z$w_buff1 == 1)))) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= z$mem_tmp && z$mem_tmp <= 1) && (z$mem_tmp == 0 || z$mem_tmp == 1)))) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || (((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 2) && __unbuffered_p1_EAX <= 127) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)))) && (! multithreaded || ((0 <= z$w_buff0 && z$w_buff0 <= 1) && (z$w_buff0 == 0 || z$w_buff0 == 1)))) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || ((0 <= __unbuffered_p2_EBX && __unbuffered_p2_EBX <= 1) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)))) && (! multithreaded || z$read_delayed == (_Bool)0) [2024-05-12 13:04:07,443 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-05-12 13:04:07,443 INFO L106 edCorrectnessWitness]: ghost_update [L844-L844] multithreaded = 1; [2024-05-12 13:04:07,482 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-05-12 13:04:07,636 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/mix006_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2024-05-12 13:04:07,792 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 13:04:07,805 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-05-12 13:04:07,838 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/mix006_power.oepc_pso.oepc_rmo.oepc.i[969,982] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-05-12 13:04:07,972 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 13:04:08,025 INFO L206 MainTranslator]: Completed translation [2024-05-12 13:04:08,027 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:04:08 WrapperNode [2024-05-12 13:04:08,028 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-05-12 13:04:08,028 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-05-12 13:04:08,034 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-05-12 13:04:08,035 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-05-12 13:04:08,040 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:04:08" (1/1) ... [2024-05-12 13:04:08,055 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:04:08" (1/1) ... [2024-05-12 13:04:08,091 INFO L138 Inliner]: procedures = 176, calls = 58, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 135 [2024-05-12 13:04:08,092 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-05-12 13:04:08,092 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-05-12 13:04:08,093 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-05-12 13:04:08,093 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-05-12 13:04:08,101 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:04:08" (1/1) ... [2024-05-12 13:04:08,101 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:04:08" (1/1) ... [2024-05-12 13:04:08,104 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:04:08" (1/1) ... [2024-05-12 13:04:08,117 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 13:04:08,118 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:04:08" (1/1) ... [2024-05-12 13:04:08,118 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:04:08" (1/1) ... [2024-05-12 13:04:08,126 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:04:08" (1/1) ... [2024-05-12 13:04:08,128 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:04:08" (1/1) ... [2024-05-12 13:04:08,129 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:04:08" (1/1) ... [2024-05-12 13:04:08,131 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:04:08" (1/1) ... [2024-05-12 13:04:08,144 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-05-12 13:04:08,145 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-05-12 13:04:08,145 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-05-12 13:04:08,145 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-05-12 13:04:08,146 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:04:08" (1/1) ... [2024-05-12 13:04:08,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 13:04:08,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 13:04:08,185 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 13:04:08,200 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 13:04:08,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-05-12 13:04:08,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-05-12 13:04:08,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-05-12 13:04:08,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-05-12 13:04:08,225 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-05-12 13:04:08,225 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-05-12 13:04:08,225 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-05-12 13:04:08,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-05-12 13:04:08,225 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-05-12 13:04:08,225 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-05-12 13:04:08,225 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-05-12 13:04:08,226 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-05-12 13:04:08,226 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-05-12 13:04:08,226 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-05-12 13:04:08,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-05-12 13:04:08,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-05-12 13:04:08,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-05-12 13:04:08,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-05-12 13:04:08,227 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-05-12 13:04:08,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-05-12 13:04:08,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-05-12 13:04:08,228 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 13:04:08,366 INFO L244 CfgBuilder]: Building ICFG [2024-05-12 13:04:08,375 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-05-12 13:04:08,728 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-05-12 13:04:08,728 INFO L293 CfgBuilder]: Performing block encoding [2024-05-12 13:04:08,891 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-05-12 13:04:08,891 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-05-12 13:04:08,892 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 01:04:08 BoogieIcfgContainer [2024-05-12 13:04:08,892 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-05-12 13:04:08,894 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-05-12 13:04:08,894 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-05-12 13:04:08,897 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-05-12 13:04:08,897 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:04:05" (1/4) ... [2024-05-12 13:04:08,898 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a77c21b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 01:04:08, skipping insertion in model container [2024-05-12 13:04:08,898 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.05 01:04:07" (2/4) ... [2024-05-12 13:04:08,899 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a77c21b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 01:04:08, skipping insertion in model container [2024-05-12 13:04:08,899 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:04:08" (3/4) ... [2024-05-12 13:04:08,899 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a77c21b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 01:04:08, skipping insertion in model container [2024-05-12 13:04:08,900 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 01:04:08" (4/4) ... [2024-05-12 13:04:08,901 INFO L112 eAbstractionObserver]: Analyzing ICFG mix006_power.oepc_pso.oepc_rmo.oepc.i [2024-05-12 13:04:08,915 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-05-12 13:04:08,915 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-05-12 13:04:08,915 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-05-12 13:04:08,961 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-05-12 13:04:08,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 49 transitions, 110 flow [2024-05-12 13:04:09,020 INFO L124 PetriNetUnfolderBase]: 1/46 cut-off events. [2024-05-12 13:04:09,020 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 13:04:09,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56 conditions, 46 events. 1/46 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 77 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2024-05-12 13:04:09,023 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 49 transitions, 110 flow [2024-05-12 13:04:09,027 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 46 transitions, 101 flow [2024-05-12 13:04:09,040 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-05-12 13:04:09,054 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;@60229c57, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-12 13:04:09,054 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-05-12 13:04:09,057 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-05-12 13:04:09,058 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-05-12 13:04:09,058 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 13:04:09,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:04:09,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-05-12 13:04:09,059 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:04:09,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:04:09,065 INFO L85 PathProgramCache]: Analyzing trace with hash 2118164472, now seen corresponding path program 1 times [2024-05-12 13:04:09,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:04:09,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442540037] [2024-05-12 13:04:09,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:04:09,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:04:09,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:04:10,093 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 13:04:10,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:04:10,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442540037] [2024-05-12 13:04:10,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442540037] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:04:10,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:04:10,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 13:04:10,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112404395] [2024-05-12 13:04:10,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:04:10,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 13:04:10,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:04:10,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 13:04:10,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 13:04:10,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2024-05-12 13:04:10,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 46 transitions, 101 flow. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 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 13:04:10,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:04:10,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2024-05-12 13:04:10,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:04:10,864 INFO L124 PetriNetUnfolderBase]: 3699/6173 cut-off events. [2024-05-12 13:04:10,864 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2024-05-12 13:04:10,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11601 conditions, 6173 events. 3699/6173 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 41132 event pairs, 2881 based on Foata normal form. 176/5839 useless extension candidates. Maximal degree in co-relation 11586. Up to 5323 conditions per place. [2024-05-12 13:04:10,893 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 43 selfloop transitions, 5 changer transitions 0/60 dead transitions. [2024-05-12 13:04:10,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 60 transitions, 231 flow [2024-05-12 13:04:10,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 13:04:10,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 13:04:10,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 98 transitions. [2024-05-12 13:04:10,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-05-12 13:04:10,903 INFO L175 Difference]: Start difference. First operand has 55 places, 46 transitions, 101 flow. Second operand 3 states and 98 transitions. [2024-05-12 13:04:10,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 60 transitions, 231 flow [2024-05-12 13:04:10,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 60 transitions, 226 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-05-12 13:04:10,907 INFO L231 Difference]: Finished difference. Result has 55 places, 49 transitions, 133 flow [2024-05-12 13:04:10,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=133, PETRI_PLACES=55, PETRI_TRANSITIONS=49} [2024-05-12 13:04:10,911 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 0 predicate places. [2024-05-12 13:04:10,911 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 49 transitions, 133 flow [2024-05-12 13:04:10,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 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 13:04:10,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:04:10,912 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-05-12 13:04:10,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-05-12 13:04:10,912 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:04:10,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:04:10,913 INFO L85 PathProgramCache]: Analyzing trace with hash 2118165501, now seen corresponding path program 1 times [2024-05-12 13:04:10,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:04:10,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146082600] [2024-05-12 13:04:10,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:04:10,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:04:10,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:04:10,961 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 13:04:10,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:04:10,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146082600] [2024-05-12 13:04:10,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146082600] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:04:10,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:04:10,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 13:04:10,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884298576] [2024-05-12 13:04:10,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:04:10,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 13:04:10,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:04:10,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 13:04:10,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 13:04:10,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 49 [2024-05-12 13:04:10,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 49 transitions, 133 flow. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 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 13:04:10,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:04:10,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 49 [2024-05-12 13:04:10,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:04:11,265 INFO L124 PetriNetUnfolderBase]: 996/1923 cut-off events. [2024-05-12 13:04:11,265 INFO L125 PetriNetUnfolderBase]: For 157/157 co-relation queries the response was YES. [2024-05-12 13:04:11,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3689 conditions, 1923 events. 996/1923 cut-off events. For 157/157 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 12995 event pairs, 655 based on Foata normal form. 0/1774 useless extension candidates. Maximal degree in co-relation 3674. Up to 1277 conditions per place. [2024-05-12 13:04:11,277 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 37 selfloop transitions, 3 changer transitions 0/63 dead transitions. [2024-05-12 13:04:11,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 63 transitions, 240 flow [2024-05-12 13:04:11,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 13:04:11,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 13:04:11,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 112 transitions. [2024-05-12 13:04:11,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7619047619047619 [2024-05-12 13:04:11,280 INFO L175 Difference]: Start difference. First operand has 55 places, 49 transitions, 133 flow. Second operand 3 states and 112 transitions. [2024-05-12 13:04:11,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 63 transitions, 240 flow [2024-05-12 13:04:11,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 63 transitions, 236 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 13:04:11,282 INFO L231 Difference]: Finished difference. Result has 55 places, 47 transitions, 126 flow [2024-05-12 13:04:11,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=55, PETRI_TRANSITIONS=47} [2024-05-12 13:04:11,283 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 0 predicate places. [2024-05-12 13:04:11,283 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 47 transitions, 126 flow [2024-05-12 13:04:11,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 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 13:04:11,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:04:11,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:04:11,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-05-12 13:04:11,284 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:04:11,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:04:11,284 INFO L85 PathProgramCache]: Analyzing trace with hash -258394570, now seen corresponding path program 1 times [2024-05-12 13:04:11,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:04:11,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288297915] [2024-05-12 13:04:11,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:04:11,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:04:11,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:04:11,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:04:11,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:04:11,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288297915] [2024-05-12 13:04:11,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288297915] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:04:11,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:04:11,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-05-12 13:04:11,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785964473] [2024-05-12 13:04:11,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:04:11,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 13:04:11,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:04:11,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 13:04:11,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-05-12 13:04:11,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2024-05-12 13:04:11,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 47 transitions, 126 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 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 13:04:11,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:04:11,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2024-05-12 13:04:11,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:04:12,416 INFO L124 PetriNetUnfolderBase]: 3141/5177 cut-off events. [2024-05-12 13:04:12,417 INFO L125 PetriNetUnfolderBase]: For 1200/1200 co-relation queries the response was YES. [2024-05-12 13:04:12,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10960 conditions, 5177 events. 3141/5177 cut-off events. For 1200/1200 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 32793 event pairs, 2003 based on Foata normal form. 3/4983 useless extension candidates. Maximal degree in co-relation 10944. Up to 4514 conditions per place. [2024-05-12 13:04:12,440 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 51 selfloop transitions, 8 changer transitions 2/73 dead transitions. [2024-05-12 13:04:12,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 73 transitions, 320 flow [2024-05-12 13:04:12,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 13:04:12,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 13:04:12,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 121 transitions. [2024-05-12 13:04:12,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6173469387755102 [2024-05-12 13:04:12,445 INFO L175 Difference]: Start difference. First operand has 55 places, 47 transitions, 126 flow. Second operand 4 states and 121 transitions. [2024-05-12 13:04:12,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 73 transitions, 320 flow [2024-05-12 13:04:12,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 73 transitions, 312 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-05-12 13:04:12,449 INFO L231 Difference]: Finished difference. Result has 58 places, 53 transitions, 187 flow [2024-05-12 13:04:12,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=187, PETRI_PLACES=58, PETRI_TRANSITIONS=53} [2024-05-12 13:04:12,450 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 3 predicate places. [2024-05-12 13:04:12,450 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 53 transitions, 187 flow [2024-05-12 13:04:12,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 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 13:04:12,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:04:12,451 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:04:12,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-05-12 13:04:12,451 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:04:12,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:04:12,452 INFO L85 PathProgramCache]: Analyzing trace with hash 579704455, now seen corresponding path program 1 times [2024-05-12 13:04:12,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:04:12,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222930193] [2024-05-12 13:04:12,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:04:12,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:04:12,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:04:13,142 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 13:04:13,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:04:13,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222930193] [2024-05-12 13:04:13,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222930193] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:04:13,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:04:13,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 13:04:13,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999410633] [2024-05-12 13:04:13,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:04:13,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 13:04:13,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:04:13,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 13:04:13,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-05-12 13:04:13,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-05-12 13:04:13,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 53 transitions, 187 flow. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:04:13,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:04:13,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-05-12 13:04:13,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:04:13,763 INFO L124 PetriNetUnfolderBase]: 3310/5596 cut-off events. [2024-05-12 13:04:13,764 INFO L125 PetriNetUnfolderBase]: For 2341/2341 co-relation queries the response was YES. [2024-05-12 13:04:13,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12663 conditions, 5596 events. 3310/5596 cut-off events. For 2341/2341 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 36114 event pairs, 1990 based on Foata normal form. 5/5421 useless extension candidates. Maximal degree in co-relation 12645. Up to 4663 conditions per place. [2024-05-12 13:04:13,801 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 68 selfloop transitions, 18 changer transitions 0/97 dead transitions. [2024-05-12 13:04:13,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 97 transitions, 501 flow [2024-05-12 13:04:13,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 13:04:13,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 13:04:13,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 151 transitions. [2024-05-12 13:04:13,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6163265306122448 [2024-05-12 13:04:13,804 INFO L175 Difference]: Start difference. First operand has 58 places, 53 transitions, 187 flow. Second operand 5 states and 151 transitions. [2024-05-12 13:04:13,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 97 transitions, 501 flow [2024-05-12 13:04:13,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 97 transitions, 490 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-05-12 13:04:13,809 INFO L231 Difference]: Finished difference. Result has 63 places, 65 transitions, 301 flow [2024-05-12 13:04:13,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=301, PETRI_PLACES=63, PETRI_TRANSITIONS=65} [2024-05-12 13:04:13,810 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 8 predicate places. [2024-05-12 13:04:13,811 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 65 transitions, 301 flow [2024-05-12 13:04:13,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:04:13,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:04:13,811 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:04:13,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-05-12 13:04:13,811 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:04:13,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:04:13,812 INFO L85 PathProgramCache]: Analyzing trace with hash 790970485, now seen corresponding path program 1 times [2024-05-12 13:04:13,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:04:13,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018751965] [2024-05-12 13:04:13,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:04:13,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:04:13,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:04:14,655 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 13:04:14,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:04:14,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018751965] [2024-05-12 13:04:14,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018751965] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:04:14,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:04:14,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 13:04:14,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474673745] [2024-05-12 13:04:14,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:04:14,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 13:04:14,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:04:14,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 13:04:14,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-05-12 13:04:14,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-05-12 13:04:14,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 65 transitions, 301 flow. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:04:14,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:04:14,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-05-12 13:04:14,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:04:15,389 INFO L124 PetriNetUnfolderBase]: 3332/5557 cut-off events. [2024-05-12 13:04:15,389 INFO L125 PetriNetUnfolderBase]: For 5714/5717 co-relation queries the response was YES. [2024-05-12 13:04:15,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14696 conditions, 5557 events. 3332/5557 cut-off events. For 5714/5717 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 35421 event pairs, 1356 based on Foata normal form. 7/5381 useless extension candidates. Maximal degree in co-relation 14674. Up to 4656 conditions per place. [2024-05-12 13:04:15,420 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 78 selfloop transitions, 22 changer transitions 0/111 dead transitions. [2024-05-12 13:04:15,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 111 transitions, 659 flow [2024-05-12 13:04:15,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:04:15,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:04:15,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 179 transitions. [2024-05-12 13:04:15,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.608843537414966 [2024-05-12 13:04:15,423 INFO L175 Difference]: Start difference. First operand has 63 places, 65 transitions, 301 flow. Second operand 6 states and 179 transitions. [2024-05-12 13:04:15,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 111 transitions, 659 flow [2024-05-12 13:04:15,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 111 transitions, 651 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-05-12 13:04:15,428 INFO L231 Difference]: Finished difference. Result has 69 places, 69 transitions, 378 flow [2024-05-12 13:04:15,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=378, PETRI_PLACES=69, PETRI_TRANSITIONS=69} [2024-05-12 13:04:15,428 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 14 predicate places. [2024-05-12 13:04:15,428 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 69 transitions, 378 flow [2024-05-12 13:04:15,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:04:15,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:04:15,429 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:04:15,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-05-12 13:04:15,429 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:04:15,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:04:15,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1249717146, now seen corresponding path program 1 times [2024-05-12 13:04:15,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:04:15,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33672032] [2024-05-12 13:04:15,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:04:15,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:04:15,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:04:16,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:04:16,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:04:16,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33672032] [2024-05-12 13:04:16,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33672032] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:04:16,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:04:16,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:04:16,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717183411] [2024-05-12 13:04:16,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:04:16,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:04:16,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:04:16,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:04:16,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:04:16,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-05-12 13:04:16,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 69 transitions, 378 flow. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:04:16,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:04:16,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-05-12 13:04:16,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:04:17,127 INFO L124 PetriNetUnfolderBase]: 3369/5207 cut-off events. [2024-05-12 13:04:17,127 INFO L125 PetriNetUnfolderBase]: For 8490/8493 co-relation queries the response was YES. [2024-05-12 13:04:17,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15780 conditions, 5207 events. 3369/5207 cut-off events. For 8490/8493 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 30533 event pairs, 884 based on Foata normal form. 12/5181 useless extension candidates. Maximal degree in co-relation 15755. Up to 4602 conditions per place. [2024-05-12 13:04:17,154 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 87 selfloop transitions, 40 changer transitions 0/138 dead transitions. [2024-05-12 13:04:17,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 138 transitions, 934 flow [2024-05-12 13:04:17,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:04:17,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:04:17,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 204 transitions. [2024-05-12 13:04:17,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5947521865889213 [2024-05-12 13:04:17,156 INFO L175 Difference]: Start difference. First operand has 69 places, 69 transitions, 378 flow. Second operand 7 states and 204 transitions. [2024-05-12 13:04:17,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 138 transitions, 934 flow [2024-05-12 13:04:17,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 138 transitions, 881 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-05-12 13:04:17,163 INFO L231 Difference]: Finished difference. Result has 74 places, 87 transitions, 601 flow [2024-05-12 13:04:17,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=601, PETRI_PLACES=74, PETRI_TRANSITIONS=87} [2024-05-12 13:04:17,166 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 19 predicate places. [2024-05-12 13:04:17,166 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 87 transitions, 601 flow [2024-05-12 13:04:17,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:04:17,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:04:17,166 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:04:17,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-05-12 13:04:17,167 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:04:17,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:04:17,167 INFO L85 PathProgramCache]: Analyzing trace with hash 2061821786, now seen corresponding path program 1 times [2024-05-12 13:04:17,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:04:17,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076480630] [2024-05-12 13:04:17,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:04:17,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:04:17,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:04:17,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:04:17,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:04:17,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076480630] [2024-05-12 13:04:17,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076480630] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:04:17,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:04:17,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 13:04:17,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523873308] [2024-05-12 13:04:17,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:04:17,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 13:04:17,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:04:17,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 13:04:17,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-05-12 13:04:17,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-05-12 13:04:17,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 87 transitions, 601 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 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 13:04:17,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:04:17,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-05-12 13:04:17,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:04:18,614 INFO L124 PetriNetUnfolderBase]: 3915/6546 cut-off events. [2024-05-12 13:04:18,614 INFO L125 PetriNetUnfolderBase]: For 15503/15503 co-relation queries the response was YES. [2024-05-12 13:04:18,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20721 conditions, 6546 events. 3915/6546 cut-off events. For 15503/15503 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 42470 event pairs, 1649 based on Foata normal form. 2/6360 useless extension candidates. Maximal degree in co-relation 20692. Up to 5605 conditions per place. [2024-05-12 13:04:18,663 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 80 selfloop transitions, 14 changer transitions 0/104 dead transitions. [2024-05-12 13:04:18,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 104 transitions, 829 flow [2024-05-12 13:04:18,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 13:04:18,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 13:04:18,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 124 transitions. [2024-05-12 13:04:18,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5061224489795918 [2024-05-12 13:04:18,665 INFO L175 Difference]: Start difference. First operand has 74 places, 87 transitions, 601 flow. Second operand 5 states and 124 transitions. [2024-05-12 13:04:18,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 104 transitions, 829 flow [2024-05-12 13:04:18,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 104 transitions, 765 flow, removed 32 selfloop flow, removed 0 redundant places. [2024-05-12 13:04:18,680 INFO L231 Difference]: Finished difference. Result has 79 places, 87 transitions, 577 flow [2024-05-12 13:04:18,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=537, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=577, PETRI_PLACES=79, PETRI_TRANSITIONS=87} [2024-05-12 13:04:18,681 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 24 predicate places. [2024-05-12 13:04:18,681 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 87 transitions, 577 flow [2024-05-12 13:04:18,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 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 13:04:18,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:04:18,682 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:04:18,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-05-12 13:04:18,682 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:04:18,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:04:18,683 INFO L85 PathProgramCache]: Analyzing trace with hash -555112105, now seen corresponding path program 1 times [2024-05-12 13:04:18,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:04:18,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227894096] [2024-05-12 13:04:18,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:04:18,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:04:18,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:04:19,347 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 13:04:19,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:04:19,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227894096] [2024-05-12 13:04:19,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227894096] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:04:19,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:04:19,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:04:19,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945199659] [2024-05-12 13:04:19,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:04:19,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:04:19,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:04:19,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:04:19,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:04:19,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-05-12 13:04:19,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 87 transitions, 577 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:04:19,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:04:19,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-05-12 13:04:19,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:04:20,484 INFO L124 PetriNetUnfolderBase]: 3905/6581 cut-off events. [2024-05-12 13:04:20,485 INFO L125 PetriNetUnfolderBase]: For 14019/14019 co-relation queries the response was YES. [2024-05-12 13:04:20,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19805 conditions, 6581 events. 3905/6581 cut-off events. For 14019/14019 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 43092 event pairs, 1567 based on Foata normal form. 4/6397 useless extension candidates. Maximal degree in co-relation 19772. Up to 5557 conditions per place. [2024-05-12 13:04:20,530 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 89 selfloop transitions, 17 changer transitions 0/116 dead transitions. [2024-05-12 13:04:20,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 116 transitions, 873 flow [2024-05-12 13:04:20,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:04:20,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:04:20,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 149 transitions. [2024-05-12 13:04:20,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5068027210884354 [2024-05-12 13:04:20,532 INFO L175 Difference]: Start difference. First operand has 79 places, 87 transitions, 577 flow. Second operand 6 states and 149 transitions. [2024-05-12 13:04:20,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 116 transitions, 873 flow [2024-05-12 13:04:20,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 116 transitions, 834 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-05-12 13:04:20,546 INFO L231 Difference]: Finished difference. Result has 81 places, 90 transitions, 607 flow [2024-05-12 13:04:20,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=607, PETRI_PLACES=81, PETRI_TRANSITIONS=90} [2024-05-12 13:04:20,548 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 26 predicate places. [2024-05-12 13:04:20,549 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 90 transitions, 607 flow [2024-05-12 13:04:20,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:04:20,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:04:20,549 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:04:20,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-05-12 13:04:20,549 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:04:20,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:04:20,550 INFO L85 PathProgramCache]: Analyzing trace with hash -35250058, now seen corresponding path program 1 times [2024-05-12 13:04:20,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:04:20,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154903628] [2024-05-12 13:04:20,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:04:20,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:04:20,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:04:21,378 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 13:04:21,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:04:21,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154903628] [2024-05-12 13:04:21,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154903628] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:04:21,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:04:21,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:04:21,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973608784] [2024-05-12 13:04:21,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:04:21,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:04:21,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:04:21,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:04:21,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:04:21,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-05-12 13:04:21,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 90 transitions, 607 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:04:21,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:04:21,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-05-12 13:04:21,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:04:22,252 INFO L124 PetriNetUnfolderBase]: 3923/6482 cut-off events. [2024-05-12 13:04:22,252 INFO L125 PetriNetUnfolderBase]: For 16717/16726 co-relation queries the response was YES. [2024-05-12 13:04:22,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20794 conditions, 6482 events. 3923/6482 cut-off events. For 16717/16726 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 41185 event pairs, 1422 based on Foata normal form. 10/6305 useless extension candidates. Maximal degree in co-relation 20761. Up to 5499 conditions per place. [2024-05-12 13:04:22,296 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 92 selfloop transitions, 21 changer transitions 0/123 dead transitions. [2024-05-12 13:04:22,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 123 transitions, 970 flow [2024-05-12 13:04:22,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:04:22,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:04:22,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 156 transitions. [2024-05-12 13:04:22,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5306122448979592 [2024-05-12 13:04:22,298 INFO L175 Difference]: Start difference. First operand has 81 places, 90 transitions, 607 flow. Second operand 6 states and 156 transitions. [2024-05-12 13:04:22,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 123 transitions, 970 flow [2024-05-12 13:04:22,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 123 transitions, 929 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-05-12 13:04:22,312 INFO L231 Difference]: Finished difference. Result has 83 places, 93 transitions, 651 flow [2024-05-12 13:04:22,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=566, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=651, PETRI_PLACES=83, PETRI_TRANSITIONS=93} [2024-05-12 13:04:22,313 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 28 predicate places. [2024-05-12 13:04:22,313 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 93 transitions, 651 flow [2024-05-12 13:04:22,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:04:22,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:04:22,314 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:04:22,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-05-12 13:04:22,314 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:04:22,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:04:22,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1430847512, now seen corresponding path program 2 times [2024-05-12 13:04:22,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:04:22,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406946731] [2024-05-12 13:04:22,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:04:22,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:04:22,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:04:23,042 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 13:04:23,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:04:23,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406946731] [2024-05-12 13:04:23,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406946731] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:04:23,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:04:23,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:04:23,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859001516] [2024-05-12 13:04:23,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:04:23,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:04:23,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:04:23,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:04:23,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:04:23,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-05-12 13:04:23,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 93 transitions, 651 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:04:23,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:04:23,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-05-12 13:04:23,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:04:23,894 INFO L124 PetriNetUnfolderBase]: 3908/6577 cut-off events. [2024-05-12 13:04:23,894 INFO L125 PetriNetUnfolderBase]: For 18451/18451 co-relation queries the response was YES. [2024-05-12 13:04:23,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21068 conditions, 6577 events. 3908/6577 cut-off events. For 18451/18451 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 43025 event pairs, 1607 based on Foata normal form. 2/6391 useless extension candidates. Maximal degree in co-relation 21034. Up to 5582 conditions per place. [2024-05-12 13:04:23,930 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 93 selfloop transitions, 13 changer transitions 0/116 dead transitions. [2024-05-12 13:04:23,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 116 transitions, 921 flow [2024-05-12 13:04:23,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:04:23,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:04:23,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2024-05-12 13:04:23,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4965986394557823 [2024-05-12 13:04:23,931 INFO L175 Difference]: Start difference. First operand has 83 places, 93 transitions, 651 flow. Second operand 6 states and 146 transitions. [2024-05-12 13:04:23,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 116 transitions, 921 flow [2024-05-12 13:04:23,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 116 transitions, 876 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-05-12 13:04:23,950 INFO L231 Difference]: Finished difference. Result has 86 places, 93 transitions, 640 flow [2024-05-12 13:04:23,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=606, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=640, PETRI_PLACES=86, PETRI_TRANSITIONS=93} [2024-05-12 13:04:23,950 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 31 predicate places. [2024-05-12 13:04:23,951 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 93 transitions, 640 flow [2024-05-12 13:04:23,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:04:23,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:04:23,951 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:04:23,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-05-12 13:04:23,951 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:04:23,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:04:23,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1006400067, now seen corresponding path program 1 times [2024-05-12 13:04:23,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:04:23,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120036893] [2024-05-12 13:04:23,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:04:23,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:04:23,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:04:24,873 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 13:04:24,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:04:24,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120036893] [2024-05-12 13:04:24,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120036893] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:04:24,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:04:24,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:04:24,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045054844] [2024-05-12 13:04:24,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:04:24,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:04:24,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:04:24,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:04:24,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:04:24,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-05-12 13:04:24,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 93 transitions, 640 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:04:24,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:04:24,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-05-12 13:04:24,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:04:25,755 INFO L124 PetriNetUnfolderBase]: 4066/6685 cut-off events. [2024-05-12 13:04:25,756 INFO L125 PetriNetUnfolderBase]: For 21162/21171 co-relation queries the response was YES. [2024-05-12 13:04:25,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21939 conditions, 6685 events. 4066/6685 cut-off events. For 21162/21171 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 42367 event pairs, 1247 based on Foata normal form. 10/6505 useless extension candidates. Maximal degree in co-relation 21904. Up to 5490 conditions per place. [2024-05-12 13:04:25,803 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 106 selfloop transitions, 29 changer transitions 0/145 dead transitions. [2024-05-12 13:04:25,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 145 transitions, 1120 flow [2024-05-12 13:04:25,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:04:25,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:04:25,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 185 transitions. [2024-05-12 13:04:25,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5393586005830904 [2024-05-12 13:04:25,805 INFO L175 Difference]: Start difference. First operand has 86 places, 93 transitions, 640 flow. Second operand 7 states and 185 transitions. [2024-05-12 13:04:25,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 145 transitions, 1120 flow [2024-05-12 13:04:25,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 145 transitions, 1064 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-05-12 13:04:25,824 INFO L231 Difference]: Finished difference. Result has 88 places, 104 transitions, 742 flow [2024-05-12 13:04:25,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=584, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=742, PETRI_PLACES=88, PETRI_TRANSITIONS=104} [2024-05-12 13:04:25,824 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 33 predicate places. [2024-05-12 13:04:25,824 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 104 transitions, 742 flow [2024-05-12 13:04:25,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:04:25,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:04:25,825 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:04:25,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-05-12 13:04:25,825 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:04:25,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:04:25,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1406867251, now seen corresponding path program 2 times [2024-05-12 13:04:25,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:04:25,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490826651] [2024-05-12 13:04:25,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:04:25,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:04:25,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:04:26,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:04:26,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:04:26,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490826651] [2024-05-12 13:04:26,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490826651] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:04:26,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:04:26,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:04:26,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686601531] [2024-05-12 13:04:26,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:04:26,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:04:26,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:04:26,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:04:26,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:04:26,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-05-12 13:04:26,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 104 transitions, 742 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:04:26,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:04:26,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-05-12 13:04:26,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:04:27,641 INFO L124 PetriNetUnfolderBase]: 4112/6903 cut-off events. [2024-05-12 13:04:27,641 INFO L125 PetriNetUnfolderBase]: For 26911/26911 co-relation queries the response was YES. [2024-05-12 13:04:27,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24396 conditions, 6903 events. 4112/6903 cut-off events. For 26911/26911 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 45191 event pairs, 1508 based on Foata normal form. 4/6711 useless extension candidates. Maximal degree in co-relation 24360. Up to 5836 conditions per place. [2024-05-12 13:04:27,684 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 110 selfloop transitions, 17 changer transitions 0/137 dead transitions. [2024-05-12 13:04:27,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 137 transitions, 1102 flow [2024-05-12 13:04:27,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:04:27,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:04:27,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-05-12 13:04:27,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4956268221574344 [2024-05-12 13:04:27,686 INFO L175 Difference]: Start difference. First operand has 88 places, 104 transitions, 742 flow. Second operand 7 states and 170 transitions. [2024-05-12 13:04:27,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 137 transitions, 1102 flow [2024-05-12 13:04:27,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 137 transitions, 1076 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-05-12 13:04:27,708 INFO L231 Difference]: Finished difference. Result has 93 places, 107 transitions, 792 flow [2024-05-12 13:04:27,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=716, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=792, PETRI_PLACES=93, PETRI_TRANSITIONS=107} [2024-05-12 13:04:27,708 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 38 predicate places. [2024-05-12 13:04:27,708 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 107 transitions, 792 flow [2024-05-12 13:04:27,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:04:27,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:04:27,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:04:27,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-05-12 13:04:27,709 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:04:27,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:04:27,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1011041697, now seen corresponding path program 3 times [2024-05-12 13:04:27,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:04:27,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736967208] [2024-05-12 13:04:27,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:04:27,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:04:27,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:04:28,525 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 13:04:28,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:04:28,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736967208] [2024-05-12 13:04:28,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736967208] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:04:28,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:04:28,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:04:28,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563094091] [2024-05-12 13:04:28,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:04:28,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:04:28,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:04:28,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:04:28,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:04:28,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-05-12 13:04:28,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 107 transitions, 792 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:04:28,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:04:28,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-05-12 13:04:28,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:04:29,656 INFO L124 PetriNetUnfolderBase]: 4102/6881 cut-off events. [2024-05-12 13:04:29,656 INFO L125 PetriNetUnfolderBase]: For 30123/30123 co-relation queries the response was YES. [2024-05-12 13:04:29,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24760 conditions, 6881 events. 4102/6881 cut-off events. For 30123/30123 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 44993 event pairs, 1512 based on Foata normal form. 4/6689 useless extension candidates. Maximal degree in co-relation 24721. Up to 5773 conditions per place. [2024-05-12 13:04:29,699 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 111 selfloop transitions, 22 changer transitions 0/143 dead transitions. [2024-05-12 13:04:29,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 143 transitions, 1184 flow [2024-05-12 13:04:29,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:04:29,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:04:29,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2024-05-12 13:04:29,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5072886297376094 [2024-05-12 13:04:29,702 INFO L175 Difference]: Start difference. First operand has 93 places, 107 transitions, 792 flow. Second operand 7 states and 174 transitions. [2024-05-12 13:04:29,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 143 transitions, 1184 flow [2024-05-12 13:04:29,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 143 transitions, 1124 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-05-12 13:04:29,723 INFO L231 Difference]: Finished difference. Result has 95 places, 110 transitions, 824 flow [2024-05-12 13:04:29,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=732, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=824, PETRI_PLACES=95, PETRI_TRANSITIONS=110} [2024-05-12 13:04:29,724 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 40 predicate places. [2024-05-12 13:04:29,724 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 110 transitions, 824 flow [2024-05-12 13:04:29,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:04:29,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:04:29,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:04:29,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-05-12 13:04:29,725 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:04:29,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:04:29,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1729914374, now seen corresponding path program 1 times [2024-05-12 13:04:29,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:04:29,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735364164] [2024-05-12 13:04:29,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:04:29,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:04:29,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:04:30,309 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 13:04:30,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:04:30,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735364164] [2024-05-12 13:04:30,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735364164] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:04:30,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:04:30,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 13:04:30,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237360927] [2024-05-12 13:04:30,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:04:30,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 13:04:30,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:04:30,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 13:04:30,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-05-12 13:04:30,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-05-12 13:04:30,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 110 transitions, 824 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 13:04:30,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:04:30,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-05-12 13:04:30,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:04:31,379 INFO L124 PetriNetUnfolderBase]: 5315/8747 cut-off events. [2024-05-12 13:04:31,379 INFO L125 PetriNetUnfolderBase]: For 43967/43997 co-relation queries the response was YES. [2024-05-12 13:04:31,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31515 conditions, 8747 events. 5315/8747 cut-off events. For 43967/43997 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 57340 event pairs, 2104 based on Foata normal form. 19/8493 useless extension candidates. Maximal degree in co-relation 31476. Up to 7549 conditions per place. [2024-05-12 13:04:31,435 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 98 selfloop transitions, 11 changer transitions 0/128 dead transitions. [2024-05-12 13:04:31,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 128 transitions, 1106 flow [2024-05-12 13:04:31,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 13:04:31,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 13:04:31,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 116 transitions. [2024-05-12 13:04:31,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47346938775510206 [2024-05-12 13:04:31,438 INFO L175 Difference]: Start difference. First operand has 95 places, 110 transitions, 824 flow. Second operand 5 states and 116 transitions. [2024-05-12 13:04:31,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 128 transitions, 1106 flow [2024-05-12 13:04:31,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 128 transitions, 1042 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-05-12 13:04:31,469 INFO L231 Difference]: Finished difference. Result has 95 places, 113 transitions, 819 flow [2024-05-12 13:04:31,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=760, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=819, PETRI_PLACES=95, PETRI_TRANSITIONS=113} [2024-05-12 13:04:31,471 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 40 predicate places. [2024-05-12 13:04:31,471 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 113 transitions, 819 flow [2024-05-12 13:04:31,471 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 13:04:31,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:04:31,471 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:04:31,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-05-12 13:04:31,471 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:04:31,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:04:31,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1129817163, now seen corresponding path program 1 times [2024-05-12 13:04:31,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:04:31,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078933822] [2024-05-12 13:04:31,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:04:31,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:04:31,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:04:32,417 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 13:04:32,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:04:32,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078933822] [2024-05-12 13:04:32,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078933822] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:04:32,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:04:32,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:04:32,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170542669] [2024-05-12 13:04:32,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:04:32,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:04:32,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:04:32,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:04:32,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:04:32,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-05-12 13:04:32,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 113 transitions, 819 flow. Second operand has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 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 13:04:32,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:04:32,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-05-12 13:04:32,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:04:33,403 INFO L124 PetriNetUnfolderBase]: 4286/6563 cut-off events. [2024-05-12 13:04:33,404 INFO L125 PetriNetUnfolderBase]: For 41710/41716 co-relation queries the response was YES. [2024-05-12 13:04:33,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26836 conditions, 6563 events. 4286/6563 cut-off events. For 41710/41716 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 38630 event pairs, 1153 based on Foata normal form. 6/6515 useless extension candidates. Maximal degree in co-relation 26796. Up to 5842 conditions per place. [2024-05-12 13:04:33,443 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 109 selfloop transitions, 41 changer transitions 0/161 dead transitions. [2024-05-12 13:04:33,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 161 transitions, 1337 flow [2024-05-12 13:04:33,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:04:33,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:04:33,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 184 transitions. [2024-05-12 13:04:33,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5364431486880467 [2024-05-12 13:04:33,445 INFO L175 Difference]: Start difference. First operand has 95 places, 113 transitions, 819 flow. Second operand 7 states and 184 transitions. [2024-05-12 13:04:33,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 161 transitions, 1337 flow [2024-05-12 13:04:33,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 161 transitions, 1304 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-05-12 13:04:33,471 INFO L231 Difference]: Finished difference. Result has 99 places, 119 transitions, 935 flow [2024-05-12 13:04:33,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=786, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=935, PETRI_PLACES=99, PETRI_TRANSITIONS=119} [2024-05-12 13:04:33,472 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 44 predicate places. [2024-05-12 13:04:33,472 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 119 transitions, 935 flow [2024-05-12 13:04:33,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 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 13:04:33,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:04:33,472 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:04:33,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-05-12 13:04:33,472 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:04:33,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:04:33,473 INFO L85 PathProgramCache]: Analyzing trace with hash 480751127, now seen corresponding path program 2 times [2024-05-12 13:04:33,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:04:33,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968051492] [2024-05-12 13:04:33,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:04:33,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:04:33,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:04:34,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:04:34,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:04:34,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968051492] [2024-05-12 13:04:34,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968051492] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:04:34,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:04:34,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:04:34,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155604369] [2024-05-12 13:04:34,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:04:34,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:04:34,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:04:34,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:04:34,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:04:34,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-05-12 13:04:34,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 119 transitions, 935 flow. Second operand has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 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 13:04:34,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:04:34,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-05-12 13:04:34,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:04:35,521 INFO L124 PetriNetUnfolderBase]: 4335/7062 cut-off events. [2024-05-12 13:04:35,521 INFO L125 PetriNetUnfolderBase]: For 47829/47835 co-relation queries the response was YES. [2024-05-12 13:04:35,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28623 conditions, 7062 events. 4335/7062 cut-off events. For 47829/47835 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 44826 event pairs, 1336 based on Foata normal form. 6/6858 useless extension candidates. Maximal degree in co-relation 28582. Up to 6013 conditions per place. [2024-05-12 13:04:35,566 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 123 selfloop transitions, 24 changer transitions 0/158 dead transitions. [2024-05-12 13:04:35,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 158 transitions, 1363 flow [2024-05-12 13:04:35,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:04:35,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:04:35,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-05-12 13:04:35,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5189504373177842 [2024-05-12 13:04:35,568 INFO L175 Difference]: Start difference. First operand has 99 places, 119 transitions, 935 flow. Second operand 7 states and 178 transitions. [2024-05-12 13:04:35,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 158 transitions, 1363 flow [2024-05-12 13:04:35,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 158 transitions, 1293 flow, removed 19 selfloop flow, removed 3 redundant places. [2024-05-12 13:04:35,607 INFO L231 Difference]: Finished difference. Result has 103 places, 122 transitions, 959 flow [2024-05-12 13:04:35,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=873, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=959, PETRI_PLACES=103, PETRI_TRANSITIONS=122} [2024-05-12 13:04:35,607 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 48 predicate places. [2024-05-12 13:04:35,607 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 122 transitions, 959 flow [2024-05-12 13:04:35,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 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 13:04:35,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:04:35,608 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:04:35,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-05-12 13:04:35,608 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:04:35,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:04:35,608 INFO L85 PathProgramCache]: Analyzing trace with hash 484475932, now seen corresponding path program 1 times [2024-05-12 13:04:35,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:04:35,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183778713] [2024-05-12 13:04:35,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:04:35,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:04:35,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:04:36,628 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 13:04:36,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:04:36,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183778713] [2024-05-12 13:04:36,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183778713] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:04:36,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:04:36,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:04:36,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443774675] [2024-05-12 13:04:36,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:04:36,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:04:36,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:04:36,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:04:36,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:04:36,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-05-12 13:04:36,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 122 transitions, 959 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 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 13:04:36,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:04:36,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-05-12 13:04:36,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:04:37,770 INFO L124 PetriNetUnfolderBase]: 4381/7127 cut-off events. [2024-05-12 13:04:37,770 INFO L125 PetriNetUnfolderBase]: For 51631/51637 co-relation queries the response was YES. [2024-05-12 13:04:37,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29034 conditions, 7127 events. 4381/7127 cut-off events. For 51631/51637 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 45153 event pairs, 1258 based on Foata normal form. 5/6924 useless extension candidates. Maximal degree in co-relation 28991. Up to 5828 conditions per place. [2024-05-12 13:04:37,820 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 127 selfloop transitions, 36 changer transitions 0/174 dead transitions. [2024-05-12 13:04:37,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 174 transitions, 1519 flow [2024-05-12 13:04:37,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:04:37,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:04:37,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 210 transitions. [2024-05-12 13:04:37,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2024-05-12 13:04:37,822 INFO L175 Difference]: Start difference. First operand has 103 places, 122 transitions, 959 flow. Second operand 8 states and 210 transitions. [2024-05-12 13:04:37,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 174 transitions, 1519 flow [2024-05-12 13:04:37,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 174 transitions, 1463 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-05-12 13:04:37,860 INFO L231 Difference]: Finished difference. Result has 106 places, 125 transitions, 1017 flow [2024-05-12 13:04:37,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=903, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1017, PETRI_PLACES=106, PETRI_TRANSITIONS=125} [2024-05-12 13:04:37,861 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 51 predicate places. [2024-05-12 13:04:37,861 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 125 transitions, 1017 flow [2024-05-12 13:04:37,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 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 13:04:37,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:04:37,861 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:04:37,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-05-12 13:04:37,861 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:04:37,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:04:37,862 INFO L85 PathProgramCache]: Analyzing trace with hash 484470352, now seen corresponding path program 2 times [2024-05-12 13:04:37,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:04:37,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364599115] [2024-05-12 13:04:37,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:04:37,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:04:37,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:04:38,704 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 13:04:38,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:04:38,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364599115] [2024-05-12 13:04:38,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364599115] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:04:38,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:04:38,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:04:38,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290238648] [2024-05-12 13:04:38,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:04:38,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:04:38,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:04:38,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:04:38,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:04:38,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-05-12 13:04:38,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 125 transitions, 1017 flow. Second operand has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 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 13:04:38,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:04:38,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-05-12 13:04:38,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:04:39,629 INFO L124 PetriNetUnfolderBase]: 4427/7207 cut-off events. [2024-05-12 13:04:39,630 INFO L125 PetriNetUnfolderBase]: For 56797/56803 co-relation queries the response was YES. [2024-05-12 13:04:39,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29844 conditions, 7207 events. 4427/7207 cut-off events. For 56797/56803 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 45821 event pairs, 1257 based on Foata normal form. 5/6999 useless extension candidates. Maximal degree in co-relation 29800. Up to 5867 conditions per place. [2024-05-12 13:04:39,681 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 119 selfloop transitions, 42 changer transitions 0/172 dead transitions. [2024-05-12 13:04:39,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 172 transitions, 1567 flow [2024-05-12 13:04:39,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:04:39,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:04:39,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 189 transitions. [2024-05-12 13:04:39,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5510204081632653 [2024-05-12 13:04:39,683 INFO L175 Difference]: Start difference. First operand has 106 places, 125 transitions, 1017 flow. Second operand 7 states and 189 transitions. [2024-05-12 13:04:39,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 172 transitions, 1567 flow [2024-05-12 13:04:39,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 172 transitions, 1467 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-05-12 13:04:39,730 INFO L231 Difference]: Finished difference. Result has 107 places, 128 transitions, 1049 flow [2024-05-12 13:04:39,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=923, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1049, PETRI_PLACES=107, PETRI_TRANSITIONS=128} [2024-05-12 13:04:39,731 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 52 predicate places. [2024-05-12 13:04:39,731 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 128 transitions, 1049 flow [2024-05-12 13:04:39,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 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 13:04:39,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:04:39,731 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:04:39,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-05-12 13:04:39,731 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:04:39,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:04:39,732 INFO L85 PathProgramCache]: Analyzing trace with hash 663212994, now seen corresponding path program 3 times [2024-05-12 13:04:39,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:04:39,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219060442] [2024-05-12 13:04:39,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:04:39,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:04:39,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:04:40,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:04:40,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:04:40,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219060442] [2024-05-12 13:04:40,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219060442] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:04:40,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:04:40,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:04:40,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715853155] [2024-05-12 13:04:40,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:04:40,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:04:40,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:04:40,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:04:40,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:04:40,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-05-12 13:04:40,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 128 transitions, 1049 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 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 13:04:40,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:04:40,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-05-12 13:04:40,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:04:41,691 INFO L124 PetriNetUnfolderBase]: 4474/7120 cut-off events. [2024-05-12 13:04:41,691 INFO L125 PetriNetUnfolderBase]: For 61357/61357 co-relation queries the response was YES. [2024-05-12 13:04:41,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30281 conditions, 7120 events. 4474/7120 cut-off events. For 61357/61357 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 44713 event pairs, 1550 based on Foata normal form. 4/6985 useless extension candidates. Maximal degree in co-relation 30236. Up to 6244 conditions per place. [2024-05-12 13:04:41,744 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 139 selfloop transitions, 20 changer transitions 0/170 dead transitions. [2024-05-12 13:04:41,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 170 transitions, 1513 flow [2024-05-12 13:04:41,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:04:41,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:04:41,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-05-12 13:04:41,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49744897959183676 [2024-05-12 13:04:41,746 INFO L175 Difference]: Start difference. First operand has 107 places, 128 transitions, 1049 flow. Second operand 8 states and 195 transitions. [2024-05-12 13:04:41,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 170 transitions, 1513 flow [2024-05-12 13:04:41,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 170 transitions, 1424 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-05-12 13:04:41,810 INFO L231 Difference]: Finished difference. Result has 111 places, 131 transitions, 1054 flow [2024-05-12 13:04:41,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=963, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1054, PETRI_PLACES=111, PETRI_TRANSITIONS=131} [2024-05-12 13:04:41,811 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 56 predicate places. [2024-05-12 13:04:41,811 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 131 transitions, 1054 flow [2024-05-12 13:04:41,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 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 13:04:41,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:04:41,811 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:04:41,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-05-12 13:04:41,811 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:04:41,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:04:41,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1727801380, now seen corresponding path program 4 times [2024-05-12 13:04:41,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:04:41,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139426293] [2024-05-12 13:04:41,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:04:41,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:04:41,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:04:42,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:04:42,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:04:42,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139426293] [2024-05-12 13:04:42,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139426293] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:04:42,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:04:42,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:04:42,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475461655] [2024-05-12 13:04:42,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:04:42,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:04:42,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:04:42,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:04:42,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:04:42,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-05-12 13:04:42,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 131 transitions, 1054 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 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 13:04:42,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:04:42,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-05-12 13:04:42,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:04:43,842 INFO L124 PetriNetUnfolderBase]: 4464/7099 cut-off events. [2024-05-12 13:04:43,843 INFO L125 PetriNetUnfolderBase]: For 64692/64692 co-relation queries the response was YES. [2024-05-12 13:04:43,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30106 conditions, 7099 events. 4464/7099 cut-off events. For 64692/64692 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 44562 event pairs, 1532 based on Foata normal form. 4/6966 useless extension candidates. Maximal degree in co-relation 30060. Up to 6181 conditions per place. [2024-05-12 13:04:43,896 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 137 selfloop transitions, 25 changer transitions 0/173 dead transitions. [2024-05-12 13:04:43,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 173 transitions, 1498 flow [2024-05-12 13:04:43,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:04:43,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:04:43,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-05-12 13:04:43,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5076530612244898 [2024-05-12 13:04:43,914 INFO L175 Difference]: Start difference. First operand has 111 places, 131 transitions, 1054 flow. Second operand 8 states and 199 transitions. [2024-05-12 13:04:43,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 173 transitions, 1498 flow [2024-05-12 13:04:43,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 173 transitions, 1422 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-05-12 13:04:43,979 INFO L231 Difference]: Finished difference. Result has 113 places, 131 transitions, 1036 flow [2024-05-12 13:04:43,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=978, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1036, PETRI_PLACES=113, PETRI_TRANSITIONS=131} [2024-05-12 13:04:43,979 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 58 predicate places. [2024-05-12 13:04:43,979 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 131 transitions, 1036 flow [2024-05-12 13:04:43,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 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 13:04:43,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:04:43,980 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:04:43,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-05-12 13:04:43,980 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:04:43,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:04:43,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1719249162, now seen corresponding path program 1 times [2024-05-12 13:04:43,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:04:43,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629084082] [2024-05-12 13:04:43,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:04:43,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:04:43,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:04:45,130 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 13:04:45,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:04:45,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629084082] [2024-05-12 13:04:45,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629084082] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:04:45,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:04:45,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:04:45,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912359403] [2024-05-12 13:04:45,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:04:45,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:04:45,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:04:45,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:04:45,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:04:45,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-05-12 13:04:45,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 131 transitions, 1036 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 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 13:04:45,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:04:45,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-05-12 13:04:45,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:04:46,536 INFO L124 PetriNetUnfolderBase]: 5311/8390 cut-off events. [2024-05-12 13:04:46,536 INFO L125 PetriNetUnfolderBase]: For 78814/78814 co-relation queries the response was YES. [2024-05-12 13:04:46,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34773 conditions, 8390 events. 5311/8390 cut-off events. For 78814/78814 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 52600 event pairs, 1867 based on Foata normal form. 4/8215 useless extension candidates. Maximal degree in co-relation 34726. Up to 7408 conditions per place. [2024-05-12 13:04:46,593 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 145 selfloop transitions, 26 changer transitions 0/181 dead transitions. [2024-05-12 13:04:46,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 181 transitions, 1559 flow [2024-05-12 13:04:46,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:04:46,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:04:46,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-05-12 13:04:46,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4846938775510204 [2024-05-12 13:04:46,595 INFO L175 Difference]: Start difference. First operand has 113 places, 131 transitions, 1036 flow. Second operand 8 states and 190 transitions. [2024-05-12 13:04:46,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 181 transitions, 1559 flow [2024-05-12 13:04:46,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 181 transitions, 1454 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-05-12 13:04:46,663 INFO L231 Difference]: Finished difference. Result has 114 places, 138 transitions, 1069 flow [2024-05-12 13:04:46,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=938, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1069, PETRI_PLACES=114, PETRI_TRANSITIONS=138} [2024-05-12 13:04:46,664 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 59 predicate places. [2024-05-12 13:04:46,664 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 138 transitions, 1069 flow [2024-05-12 13:04:46,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 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 13:04:46,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:04:46,664 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:04:46,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-05-12 13:04:46,665 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:04:46,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:04:46,665 INFO L85 PathProgramCache]: Analyzing trace with hash -2055562816, now seen corresponding path program 1 times [2024-05-12 13:04:46,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:04:46,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838591688] [2024-05-12 13:04:46,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:04:46,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:04:46,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:04:47,316 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 13:04:47,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:04:47,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838591688] [2024-05-12 13:04:47,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838591688] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:04:47,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:04:47,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:04:47,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366043861] [2024-05-12 13:04:47,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:04:47,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:04:47,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:04:47,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:04:47,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:04:47,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-05-12 13:04:47,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 138 transitions, 1069 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 13:04:47,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:04:47,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-05-12 13:04:47,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:04:48,493 INFO L124 PetriNetUnfolderBase]: 5507/8479 cut-off events. [2024-05-12 13:04:48,493 INFO L125 PetriNetUnfolderBase]: For 84707/84743 co-relation queries the response was YES. [2024-05-12 13:04:48,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35745 conditions, 8479 events. 5507/8479 cut-off events. For 84707/84743 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 51151 event pairs, 2075 based on Foata normal form. 23/8366 useless extension candidates. Maximal degree in co-relation 35696. Up to 7774 conditions per place. [2024-05-12 13:04:48,553 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 127 selfloop transitions, 14 changer transitions 0/163 dead transitions. [2024-05-12 13:04:48,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 163 transitions, 1441 flow [2024-05-12 13:04:48,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:04:48,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:04:48,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 138 transitions. [2024-05-12 13:04:48,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46938775510204084 [2024-05-12 13:04:48,554 INFO L175 Difference]: Start difference. First operand has 114 places, 138 transitions, 1069 flow. Second operand 6 states and 138 transitions. [2024-05-12 13:04:48,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 163 transitions, 1441 flow [2024-05-12 13:04:48,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 163 transitions, 1370 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-05-12 13:04:48,630 INFO L231 Difference]: Finished difference. Result has 115 places, 141 transitions, 1068 flow [2024-05-12 13:04:48,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=998, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1068, PETRI_PLACES=115, PETRI_TRANSITIONS=141} [2024-05-12 13:04:48,630 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 60 predicate places. [2024-05-12 13:04:48,631 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 141 transitions, 1068 flow [2024-05-12 13:04:48,631 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 13:04:48,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:04:48,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:04:48,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-05-12 13:04:48,631 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:04:48,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:04:48,632 INFO L85 PathProgramCache]: Analyzing trace with hash 2124582176, now seen corresponding path program 1 times [2024-05-12 13:04:48,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:04:48,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017755595] [2024-05-12 13:04:48,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:04:48,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:04:48,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:04:49,748 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 13:04:49,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:04:49,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017755595] [2024-05-12 13:04:49,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017755595] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:04:49,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:04:49,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:04:49,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028742790] [2024-05-12 13:04:49,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:04:49,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:04:49,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:04:49,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:04:49,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:04:49,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-05-12 13:04:49,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 141 transitions, 1068 flow. Second operand has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 0 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 13:04:49,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:04:49,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-05-12 13:04:49,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:04:51,131 INFO L124 PetriNetUnfolderBase]: 5083/7926 cut-off events. [2024-05-12 13:04:51,131 INFO L125 PetriNetUnfolderBase]: For 89793/89803 co-relation queries the response was YES. [2024-05-12 13:04:51,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35195 conditions, 7926 events. 5083/7926 cut-off events. For 89793/89803 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 49065 event pairs, 1219 based on Foata normal form. 12/7803 useless extension candidates. Maximal degree in co-relation 35145. Up to 6819 conditions per place. [2024-05-12 13:04:51,188 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 156 selfloop transitions, 34 changer transitions 0/202 dead transitions. [2024-05-12 13:04:51,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 202 transitions, 1752 flow [2024-05-12 13:04:51,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:04:51,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:04:51,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 208 transitions. [2024-05-12 13:04:51,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5306122448979592 [2024-05-12 13:04:51,190 INFO L175 Difference]: Start difference. First operand has 115 places, 141 transitions, 1068 flow. Second operand 8 states and 208 transitions. [2024-05-12 13:04:51,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 202 transitions, 1752 flow [2024-05-12 13:04:51,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 202 transitions, 1706 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-05-12 13:04:51,270 INFO L231 Difference]: Finished difference. Result has 121 places, 151 transitions, 1214 flow [2024-05-12 13:04:51,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1022, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1214, PETRI_PLACES=121, PETRI_TRANSITIONS=151} [2024-05-12 13:04:51,271 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 66 predicate places. [2024-05-12 13:04:51,271 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 151 transitions, 1214 flow [2024-05-12 13:04:51,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 0 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 13:04:51,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:04:51,271 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:04:51,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-05-12 13:04:51,272 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:04:51,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:04:51,272 INFO L85 PathProgramCache]: Analyzing trace with hash 664595044, now seen corresponding path program 1 times [2024-05-12 13:04:51,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:04:51,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784255993] [2024-05-12 13:04:51,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:04:51,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:04:51,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:04:52,331 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 13:04:52,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:04:52,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784255993] [2024-05-12 13:04:52,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784255993] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:04:52,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:04:52,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:04:52,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808810917] [2024-05-12 13:04:52,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:04:52,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:04:52,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:04:52,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:04:52,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:04:52,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-05-12 13:04:52,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 151 transitions, 1214 flow. Second operand has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 0 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 13:04:52,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:04:52,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-05-12 13:04:52,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:04:53,731 INFO L124 PetriNetUnfolderBase]: 5169/8075 cut-off events. [2024-05-12 13:04:53,731 INFO L125 PetriNetUnfolderBase]: For 98532/98542 co-relation queries the response was YES. [2024-05-12 13:04:53,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36806 conditions, 8075 events. 5169/8075 cut-off events. For 98532/98542 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 50088 event pairs, 1366 based on Foata normal form. 9/7935 useless extension candidates. Maximal degree in co-relation 36753. Up to 6621 conditions per place. [2024-05-12 13:04:53,786 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 155 selfloop transitions, 59 changer transitions 0/226 dead transitions. [2024-05-12 13:04:53,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 226 transitions, 1992 flow [2024-05-12 13:04:53,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:04:53,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:04:53,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 264 transitions. [2024-05-12 13:04:53,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5387755102040817 [2024-05-12 13:04:53,788 INFO L175 Difference]: Start difference. First operand has 121 places, 151 transitions, 1214 flow. Second operand 10 states and 264 transitions. [2024-05-12 13:04:53,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 226 transitions, 1992 flow [2024-05-12 13:04:53,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 226 transitions, 1943 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-05-12 13:04:53,887 INFO L231 Difference]: Finished difference. Result has 128 places, 157 transitions, 1363 flow [2024-05-12 13:04:53,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1165, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1363, PETRI_PLACES=128, PETRI_TRANSITIONS=157} [2024-05-12 13:04:53,888 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 73 predicate places. [2024-05-12 13:04:53,888 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 157 transitions, 1363 flow [2024-05-12 13:04:53,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 0 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 13:04:53,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:04:53,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:04:53,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-05-12 13:04:53,889 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:04:53,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:04:53,889 INFO L85 PathProgramCache]: Analyzing trace with hash 664594920, now seen corresponding path program 2 times [2024-05-12 13:04:53,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:04:53,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727860865] [2024-05-12 13:04:53,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:04:53,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:04:53,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:04:54,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:04:54,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:04:54,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727860865] [2024-05-12 13:04:54,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727860865] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:04:54,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:04:54,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:04:54,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306048097] [2024-05-12 13:04:54,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:04:54,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:04:54,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:04:54,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:04:54,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:04:55,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-05-12 13:04:55,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 157 transitions, 1363 flow. Second operand has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 0 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 13:04:55,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:04:55,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-05-12 13:04:55,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:04:56,306 INFO L124 PetriNetUnfolderBase]: 5160/8055 cut-off events. [2024-05-12 13:04:56,306 INFO L125 PetriNetUnfolderBase]: For 106879/106889 co-relation queries the response was YES. [2024-05-12 13:04:56,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38126 conditions, 8055 events. 5160/8055 cut-off events. For 106879/106889 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 50005 event pairs, 1423 based on Foata normal form. 12/7922 useless extension candidates. Maximal degree in co-relation 38071. Up to 7053 conditions per place. [2024-05-12 13:04:56,370 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 168 selfloop transitions, 33 changer transitions 0/213 dead transitions. [2024-05-12 13:04:56,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 213 transitions, 1925 flow [2024-05-12 13:04:56,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:04:56,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:04:56,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 230 transitions. [2024-05-12 13:04:56,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5215419501133787 [2024-05-12 13:04:56,372 INFO L175 Difference]: Start difference. First operand has 128 places, 157 transitions, 1363 flow. Second operand 9 states and 230 transitions. [2024-05-12 13:04:56,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 213 transitions, 1925 flow [2024-05-12 13:04:56,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 213 transitions, 1818 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-05-12 13:04:56,469 INFO L231 Difference]: Finished difference. Result has 131 places, 157 transitions, 1330 flow [2024-05-12 13:04:56,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1256, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1330, PETRI_PLACES=131, PETRI_TRANSITIONS=157} [2024-05-12 13:04:56,470 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 76 predicate places. [2024-05-12 13:04:56,470 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 157 transitions, 1330 flow [2024-05-12 13:04:56,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 0 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 13:04:56,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:04:56,471 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:04:56,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-05-12 13:04:56,471 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:04:56,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:04:56,471 INFO L85 PathProgramCache]: Analyzing trace with hash 2133675578, now seen corresponding path program 2 times [2024-05-12 13:04:56,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:04:56,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572166644] [2024-05-12 13:04:56,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:04:56,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:04:56,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:04:57,430 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 13:04:57,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:04:57,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572166644] [2024-05-12 13:04:57,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572166644] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:04:57,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:04:57,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:04:57,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858690529] [2024-05-12 13:04:57,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:04:57,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:04:57,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:04:57,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:04:57,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:04:57,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-05-12 13:04:57,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 157 transitions, 1330 flow. Second operand has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 0 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 13:04:57,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:04:57,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-05-12 13:04:57,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:04:58,650 INFO L124 PetriNetUnfolderBase]: 5214/7923 cut-off events. [2024-05-12 13:04:58,650 INFO L125 PetriNetUnfolderBase]: For 113242/113252 co-relation queries the response was YES. [2024-05-12 13:04:58,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38542 conditions, 7923 events. 5214/7923 cut-off events. For 113242/113252 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 47375 event pairs, 1143 based on Foata normal form. 9/7868 useless extension candidates. Maximal degree in co-relation 38485. Up to 6602 conditions per place. [2024-05-12 13:04:58,716 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 140 selfloop transitions, 84 changer transitions 0/236 dead transitions. [2024-05-12 13:04:58,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 236 transitions, 2432 flow [2024-05-12 13:04:58,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:04:58,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:04:58,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 225 transitions. [2024-05-12 13:04:58,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5739795918367347 [2024-05-12 13:04:58,718 INFO L175 Difference]: Start difference. First operand has 131 places, 157 transitions, 1330 flow. Second operand 8 states and 225 transitions. [2024-05-12 13:04:58,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 236 transitions, 2432 flow [2024-05-12 13:04:58,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 236 transitions, 2366 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-05-12 13:04:58,826 INFO L231 Difference]: Finished difference. Result has 133 places, 173 transitions, 1682 flow [2024-05-12 13:04:58,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1264, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1682, PETRI_PLACES=133, PETRI_TRANSITIONS=173} [2024-05-12 13:04:58,827 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 78 predicate places. [2024-05-12 13:04:58,827 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 173 transitions, 1682 flow [2024-05-12 13:04:58,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 0 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 13:04:58,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:04:58,827 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:04:58,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-05-12 13:04:58,828 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:04:58,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:04:58,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1144407718, now seen corresponding path program 3 times [2024-05-12 13:04:58,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:04:58,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235534147] [2024-05-12 13:04:58,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:04:58,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:04:58,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:04:59,800 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 13:04:59,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:04:59,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235534147] [2024-05-12 13:04:59,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235534147] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:04:59,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:04:59,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:04:59,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387796965] [2024-05-12 13:04:59,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:04:59,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:04:59,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:04:59,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:04:59,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:04:59,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-05-12 13:04:59,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 173 transitions, 1682 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 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 13:04:59,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:04:59,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-05-12 13:04:59,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:05:01,182 INFO L124 PetriNetUnfolderBase]: 5292/8253 cut-off events. [2024-05-12 13:05:01,182 INFO L125 PetriNetUnfolderBase]: For 128108/128118 co-relation queries the response was YES. [2024-05-12 13:05:01,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41868 conditions, 8253 events. 5292/8253 cut-off events. For 128108/128118 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 51485 event pairs, 1277 based on Foata normal form. 9/8118 useless extension candidates. Maximal degree in co-relation 41809. Up to 6972 conditions per place. [2024-05-12 13:05:01,265 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 173 selfloop transitions, 47 changer transitions 0/232 dead transitions. [2024-05-12 13:05:01,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 232 transitions, 2328 flow [2024-05-12 13:05:01,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:05:01,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:05:01,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 233 transitions. [2024-05-12 13:05:01,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.528344671201814 [2024-05-12 13:05:01,266 INFO L175 Difference]: Start difference. First operand has 133 places, 173 transitions, 1682 flow. Second operand 9 states and 233 transitions. [2024-05-12 13:05:01,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 232 transitions, 2328 flow [2024-05-12 13:05:01,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 232 transitions, 2248 flow, removed 30 selfloop flow, removed 2 redundant places. [2024-05-12 13:05:01,418 INFO L231 Difference]: Finished difference. Result has 140 places, 176 transitions, 1750 flow [2024-05-12 13:05:01,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1602, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1750, PETRI_PLACES=140, PETRI_TRANSITIONS=176} [2024-05-12 13:05:01,419 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 85 predicate places. [2024-05-12 13:05:01,419 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 176 transitions, 1750 flow [2024-05-12 13:05:01,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 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 13:05:01,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:05:01,419 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:05:01,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-05-12 13:05:01,420 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:05:01,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:05:01,420 INFO L85 PathProgramCache]: Analyzing trace with hash 2133680228, now seen corresponding path program 4 times [2024-05-12 13:05:01,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:05:01,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740849422] [2024-05-12 13:05:01,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:05:01,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:05:01,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:05:02,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:05:02,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:05:02,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740849422] [2024-05-12 13:05:02,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740849422] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:05:02,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:05:02,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:05:02,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528590202] [2024-05-12 13:05:02,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:05:02,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:05:02,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:05:02,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:05:02,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:05:02,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-05-12 13:05:02,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 176 transitions, 1750 flow. Second operand has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 0 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 13:05:02,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:05:02,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-05-12 13:05:02,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:05:03,718 INFO L124 PetriNetUnfolderBase]: 5326/8315 cut-off events. [2024-05-12 13:05:03,718 INFO L125 PetriNetUnfolderBase]: For 131300/131310 co-relation queries the response was YES. [2024-05-12 13:05:03,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41749 conditions, 8315 events. 5326/8315 cut-off events. For 131300/131310 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 51990 event pairs, 1363 based on Foata normal form. 9/8173 useless extension candidates. Maximal degree in co-relation 41688. Up to 7047 conditions per place. [2024-05-12 13:05:03,799 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 168 selfloop transitions, 50 changer transitions 0/230 dead transitions. [2024-05-12 13:05:03,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 230 transitions, 2382 flow [2024-05-12 13:05:03,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:05:03,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:05:03,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 212 transitions. [2024-05-12 13:05:03,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5408163265306123 [2024-05-12 13:05:03,801 INFO L175 Difference]: Start difference. First operand has 140 places, 176 transitions, 1750 flow. Second operand 8 states and 212 transitions. [2024-05-12 13:05:03,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 230 transitions, 2382 flow [2024-05-12 13:05:03,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 230 transitions, 2270 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-05-12 13:05:03,962 INFO L231 Difference]: Finished difference. Result has 141 places, 179 transitions, 1798 flow [2024-05-12 13:05:03,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1638, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1798, PETRI_PLACES=141, PETRI_TRANSITIONS=179} [2024-05-12 13:05:03,963 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 86 predicate places. [2024-05-12 13:05:03,963 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 179 transitions, 1798 flow [2024-05-12 13:05:03,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 0 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 13:05:03,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:05:03,963 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:05:03,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-05-12 13:05:03,963 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:05:03,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:05:03,964 INFO L85 PathProgramCache]: Analyzing trace with hash -308658120, now seen corresponding path program 1 times [2024-05-12 13:05:03,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:05:03,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676224930] [2024-05-12 13:05:03,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:05:03,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:05:03,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:05:04,595 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 13:05:04,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:05:04,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676224930] [2024-05-12 13:05:04,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676224930] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:05:04,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:05:04,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:05:04,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792639484] [2024-05-12 13:05:04,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:05:04,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:05:04,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:05:04,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:05:04,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:05:04,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-05-12 13:05:04,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 179 transitions, 1798 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 13:05:04,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:05:04,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-05-12 13:05:04,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:05:05,789 INFO L124 PetriNetUnfolderBase]: 5935/9138 cut-off events. [2024-05-12 13:05:05,789 INFO L125 PetriNetUnfolderBase]: For 142250/142271 co-relation queries the response was YES. [2024-05-12 13:05:05,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45185 conditions, 9138 events. 5935/9138 cut-off events. For 142250/142271 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 55829 event pairs, 1845 based on Foata normal form. 22/8988 useless extension candidates. Maximal degree in co-relation 45123. Up to 8342 conditions per place. [2024-05-12 13:05:05,877 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 171 selfloop transitions, 18 changer transitions 0/215 dead transitions. [2024-05-12 13:05:05,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 215 transitions, 2390 flow [2024-05-12 13:05:05,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:05:05,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:05:05,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2024-05-12 13:05:05,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4897959183673469 [2024-05-12 13:05:05,878 INFO L175 Difference]: Start difference. First operand has 141 places, 179 transitions, 1798 flow. Second operand 6 states and 144 transitions. [2024-05-12 13:05:05,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 215 transitions, 2390 flow [2024-05-12 13:05:06,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 215 transitions, 2266 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-05-12 13:05:06,031 INFO L231 Difference]: Finished difference. Result has 142 places, 189 transitions, 1826 flow [2024-05-12 13:05:06,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1674, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1826, PETRI_PLACES=142, PETRI_TRANSITIONS=189} [2024-05-12 13:05:06,032 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 87 predicate places. [2024-05-12 13:05:06,032 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 189 transitions, 1826 flow [2024-05-12 13:05:06,032 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 13:05:06,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:05:06,032 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:05:06,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-05-12 13:05:06,033 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:05:06,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:05:06,033 INFO L85 PathProgramCache]: Analyzing trace with hash -2015731960, now seen corresponding path program 1 times [2024-05-12 13:05:06,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:05:06,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800513653] [2024-05-12 13:05:06,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:05:06,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:05:06,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:05:07,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:05:07,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:05:07,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800513653] [2024-05-12 13:05:07,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800513653] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:05:07,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:05:07,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:05:07,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393665134] [2024-05-12 13:05:07,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:05:07,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:05:07,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:05:07,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:05:07,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:05:07,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-05-12 13:05:07,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 189 transitions, 1826 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 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 13:05:07,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:05:07,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-05-12 13:05:07,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:05:08,600 INFO L124 PetriNetUnfolderBase]: 5836/9074 cut-off events. [2024-05-12 13:05:08,600 INFO L125 PetriNetUnfolderBase]: For 154761/154781 co-relation queries the response was YES. [2024-05-12 13:05:08,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46228 conditions, 9074 events. 5836/9074 cut-off events. For 154761/154781 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 56268 event pairs, 1865 based on Foata normal form. 2/8904 useless extension candidates. Maximal degree in co-relation 46164. Up to 8098 conditions per place. [2024-05-12 13:05:08,676 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 195 selfloop transitions, 30 changer transitions 0/238 dead transitions. [2024-05-12 13:05:08,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 238 transitions, 2476 flow [2024-05-12 13:05:08,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:05:08,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:05:08,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2024-05-12 13:05:08,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4872448979591837 [2024-05-12 13:05:08,677 INFO L175 Difference]: Start difference. First operand has 142 places, 189 transitions, 1826 flow. Second operand 8 states and 191 transitions. [2024-05-12 13:05:08,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 238 transitions, 2476 flow [2024-05-12 13:05:08,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 238 transitions, 2428 flow, removed 23 selfloop flow, removed 1 redundant places. [2024-05-12 13:05:08,898 INFO L231 Difference]: Finished difference. Result has 149 places, 195 transitions, 1940 flow [2024-05-12 13:05:08,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1788, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1940, PETRI_PLACES=149, PETRI_TRANSITIONS=195} [2024-05-12 13:05:08,898 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 94 predicate places. [2024-05-12 13:05:08,898 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 195 transitions, 1940 flow [2024-05-12 13:05:08,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 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 13:05:08,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:05:08,899 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:05:08,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-05-12 13:05:08,899 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:05:08,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:05:08,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1766627244, now seen corresponding path program 5 times [2024-05-12 13:05:08,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:05:08,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840171134] [2024-05-12 13:05:08,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:05:08,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:05:08,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:05:09,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:05:09,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:05:09,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840171134] [2024-05-12 13:05:09,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840171134] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:05:09,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:05:09,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:05:09,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9834130] [2024-05-12 13:05:09,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:05:09,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:05:09,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:05:09,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:05:09,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:05:09,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-05-12 13:05:09,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 195 transitions, 1940 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 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 13:05:09,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:05:09,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-05-12 13:05:09,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:05:11,439 INFO L124 PetriNetUnfolderBase]: 5541/8674 cut-off events. [2024-05-12 13:05:11,439 INFO L125 PetriNetUnfolderBase]: For 160923/160939 co-relation queries the response was YES. [2024-05-12 13:05:11,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45073 conditions, 8674 events. 5541/8674 cut-off events. For 160923/160939 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 54935 event pairs, 1598 based on Foata normal form. 8/8526 useless extension candidates. Maximal degree in co-relation 45006. Up to 7461 conditions per place. [2024-05-12 13:05:11,503 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 200 selfloop transitions, 47 changer transitions 0/262 dead transitions. [2024-05-12 13:05:11,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 262 transitions, 2889 flow [2024-05-12 13:05:11,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:05:11,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:05:11,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 226 transitions. [2024-05-12 13:05:11,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5124716553287982 [2024-05-12 13:05:11,505 INFO L175 Difference]: Start difference. First operand has 149 places, 195 transitions, 1940 flow. Second operand 9 states and 226 transitions. [2024-05-12 13:05:11,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 262 transitions, 2889 flow [2024-05-12 13:05:11,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 262 transitions, 2821 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-05-12 13:05:11,722 INFO L231 Difference]: Finished difference. Result has 154 places, 207 transitions, 2209 flow [2024-05-12 13:05:11,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1872, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2209, PETRI_PLACES=154, PETRI_TRANSITIONS=207} [2024-05-12 13:05:11,722 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 99 predicate places. [2024-05-12 13:05:11,722 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 207 transitions, 2209 flow [2024-05-12 13:05:11,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 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 13:05:11,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:05:11,723 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:05:11,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-05-12 13:05:11,723 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:05:11,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:05:11,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1597855006, now seen corresponding path program 6 times [2024-05-12 13:05:11,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:05:11,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403767228] [2024-05-12 13:05:11,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:05:11,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:05:11,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:05:12,725 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 13:05:12,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:05:12,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403767228] [2024-05-12 13:05:12,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403767228] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:05:12,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:05:12,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:05:12,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948180573] [2024-05-12 13:05:12,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:05:12,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:05:12,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:05:12,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:05:12,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:05:12,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-05-12 13:05:12,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 207 transitions, 2209 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 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 13:05:12,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:05:12,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-05-12 13:05:12,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:05:14,256 INFO L124 PetriNetUnfolderBase]: 5531/8647 cut-off events. [2024-05-12 13:05:14,256 INFO L125 PetriNetUnfolderBase]: For 167701/167717 co-relation queries the response was YES. [2024-05-12 13:05:14,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45690 conditions, 8647 events. 5531/8647 cut-off events. For 167701/167717 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 54581 event pairs, 1618 based on Foata normal form. 4/8499 useless extension candidates. Maximal degree in co-relation 45620. Up to 7572 conditions per place. [2024-05-12 13:05:14,335 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 210 selfloop transitions, 33 changer transitions 0/258 dead transitions. [2024-05-12 13:05:14,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 258 transitions, 2851 flow [2024-05-12 13:05:14,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:05:14,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:05:14,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 224 transitions. [2024-05-12 13:05:14,336 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5079365079365079 [2024-05-12 13:05:14,337 INFO L175 Difference]: Start difference. First operand has 154 places, 207 transitions, 2209 flow. Second operand 9 states and 224 transitions. [2024-05-12 13:05:14,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 258 transitions, 2851 flow [2024-05-12 13:05:14,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 258 transitions, 2691 flow, removed 50 selfloop flow, removed 5 redundant places. [2024-05-12 13:05:14,730 INFO L231 Difference]: Finished difference. Result has 158 places, 207 transitions, 2123 flow [2024-05-12 13:05:14,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2049, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2123, PETRI_PLACES=158, PETRI_TRANSITIONS=207} [2024-05-12 13:05:14,730 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 103 predicate places. [2024-05-12 13:05:14,731 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 207 transitions, 2123 flow [2024-05-12 13:05:14,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 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 13:05:14,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:05:14,731 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:05:14,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-05-12 13:05:14,731 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:05:14,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:05:14,732 INFO L85 PathProgramCache]: Analyzing trace with hash -295355400, now seen corresponding path program 2 times [2024-05-12 13:05:14,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:05:14,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688702808] [2024-05-12 13:05:14,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:05:14,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:05:14,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:05:15,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:05:15,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:05:15,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688702808] [2024-05-12 13:05:15,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688702808] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:05:15,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:05:15,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:05:15,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401685120] [2024-05-12 13:05:15,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:05:15,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:05:15,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:05:15,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:05:15,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:05:15,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-05-12 13:05:15,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 207 transitions, 2123 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 13:05:15,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:05:15,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-05-12 13:05:15,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:05:16,643 INFO L124 PetriNetUnfolderBase]: 6080/9436 cut-off events. [2024-05-12 13:05:16,643 INFO L125 PetriNetUnfolderBase]: For 175355/175387 co-relation queries the response was YES. [2024-05-12 13:05:16,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48013 conditions, 9436 events. 6080/9436 cut-off events. For 175355/175387 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 58608 event pairs, 2161 based on Foata normal form. 33/9300 useless extension candidates. Maximal degree in co-relation 47942. Up to 8587 conditions per place. [2024-05-12 13:05:16,737 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 185 selfloop transitions, 13 changer transitions 0/224 dead transitions. [2024-05-12 13:05:16,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 224 transitions, 2565 flow [2024-05-12 13:05:16,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:05:16,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:05:16,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 134 transitions. [2024-05-12 13:05:16,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4557823129251701 [2024-05-12 13:05:16,739 INFO L175 Difference]: Start difference. First operand has 158 places, 207 transitions, 2123 flow. Second operand 6 states and 134 transitions. [2024-05-12 13:05:16,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 224 transitions, 2565 flow [2024-05-12 13:05:16,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 224 transitions, 2455 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-05-12 13:05:16,986 INFO L231 Difference]: Finished difference. Result has 157 places, 207 transitions, 2045 flow [2024-05-12 13:05:16,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2013, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2045, PETRI_PLACES=157, PETRI_TRANSITIONS=207} [2024-05-12 13:05:16,986 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 102 predicate places. [2024-05-12 13:05:16,987 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 207 transitions, 2045 flow [2024-05-12 13:05:16,987 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 13:05:16,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:05:16,987 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:05:16,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-05-12 13:05:16,987 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:05:16,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:05:16,988 INFO L85 PathProgramCache]: Analyzing trace with hash 577219235, now seen corresponding path program 1 times [2024-05-12 13:05:16,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:05:16,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210293048] [2024-05-12 13:05:16,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:05:16,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:05:16,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:05:17,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:05:17,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:05:17,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210293048] [2024-05-12 13:05:17,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210293048] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:05:17,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:05:17,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:05:17,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041709757] [2024-05-12 13:05:17,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:05:17,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:05:17,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:05:17,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:05:17,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:05:17,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2024-05-12 13:05:17,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 207 transitions, 2045 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 13:05:17,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:05:17,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2024-05-12 13:05:17,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:05:19,060 INFO L124 PetriNetUnfolderBase]: 6396/9760 cut-off events. [2024-05-12 13:05:19,060 INFO L125 PetriNetUnfolderBase]: For 183225/183225 co-relation queries the response was YES. [2024-05-12 13:05:19,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49578 conditions, 9760 events. 6396/9760 cut-off events. For 183225/183225 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 59215 event pairs, 2169 based on Foata normal form. 1/9594 useless extension candidates. Maximal degree in co-relation 49506. Up to 9035 conditions per place. [2024-05-12 13:05:19,152 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 205 selfloop transitions, 24 changer transitions 0/237 dead transitions. [2024-05-12 13:05:19,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 237 transitions, 2701 flow [2024-05-12 13:05:19,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:05:19,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:05:19,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 137 transitions. [2024-05-12 13:05:19,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46598639455782315 [2024-05-12 13:05:19,154 INFO L175 Difference]: Start difference. First operand has 157 places, 207 transitions, 2045 flow. Second operand 6 states and 137 transitions. [2024-05-12 13:05:19,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 237 transitions, 2701 flow [2024-05-12 13:05:19,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 237 transitions, 2652 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-05-12 13:05:19,416 INFO L231 Difference]: Finished difference. Result has 158 places, 213 transitions, 2121 flow [2024-05-12 13:05:19,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1996, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2121, PETRI_PLACES=158, PETRI_TRANSITIONS=213} [2024-05-12 13:05:19,417 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 103 predicate places. [2024-05-12 13:05:19,417 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 213 transitions, 2121 flow [2024-05-12 13:05:19,417 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 13:05:19,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:05:19,417 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:05:19,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-05-12 13:05:19,418 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:05:19,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:05:19,418 INFO L85 PathProgramCache]: Analyzing trace with hash 735958273, now seen corresponding path program 2 times [2024-05-12 13:05:19,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:05:19,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231144043] [2024-05-12 13:05:19,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:05:19,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:05:19,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:05:20,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:05:20,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:05:20,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231144043] [2024-05-12 13:05:20,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231144043] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:05:20,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:05:20,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:05:20,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841057234] [2024-05-12 13:05:20,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:05:20,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:05:20,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:05:20,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:05:20,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:05:20,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2024-05-12 13:05:20,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 213 transitions, 2121 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 13:05:20,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:05:20,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2024-05-12 13:05:20,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:05:21,529 INFO L124 PetriNetUnfolderBase]: 6393/9757 cut-off events. [2024-05-12 13:05:21,529 INFO L125 PetriNetUnfolderBase]: For 194533/194539 co-relation queries the response was YES. [2024-05-12 13:05:21,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50599 conditions, 9757 events. 6393/9757 cut-off events. For 194533/194539 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 59250 event pairs, 2156 based on Foata normal form. 5/9594 useless extension candidates. Maximal degree in co-relation 50527. Up to 9032 conditions per place. [2024-05-12 13:05:21,627 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 201 selfloop transitions, 24 changer transitions 0/233 dead transitions. [2024-05-12 13:05:21,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 233 transitions, 2631 flow [2024-05-12 13:05:21,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:05:21,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:05:21,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 133 transitions. [2024-05-12 13:05:21,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-05-12 13:05:21,628 INFO L175 Difference]: Start difference. First operand has 158 places, 213 transitions, 2121 flow. Second operand 6 states and 133 transitions. [2024-05-12 13:05:21,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 233 transitions, 2631 flow [2024-05-12 13:05:21,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 233 transitions, 2574 flow, removed 22 selfloop flow, removed 2 redundant places. [2024-05-12 13:05:21,961 INFO L231 Difference]: Finished difference. Result has 162 places, 213 transitions, 2119 flow [2024-05-12 13:05:21,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2064, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2119, PETRI_PLACES=162, PETRI_TRANSITIONS=213} [2024-05-12 13:05:21,961 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 107 predicate places. [2024-05-12 13:05:21,961 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 213 transitions, 2119 flow [2024-05-12 13:05:21,962 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 13:05:21,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:05:21,962 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 13:05:21,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-05-12 13:05:21,962 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:05:21,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:05:21,963 INFO L85 PathProgramCache]: Analyzing trace with hash -874266551, now seen corresponding path program 1 times [2024-05-12 13:05:21,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:05:21,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497624343] [2024-05-12 13:05:21,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:05:21,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:05:21,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:05:23,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:05:23,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:05:23,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497624343] [2024-05-12 13:05:23,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497624343] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:05:23,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:05:23,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:05:23,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343638702] [2024-05-12 13:05:23,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:05:23,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:05:23,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:05:23,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:05:23,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:05:23,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-05-12 13:05:23,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 213 transitions, 2119 flow. Second operand has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 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 13:05:23,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:05:23,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-05-12 13:05:23,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:05:24,797 INFO L124 PetriNetUnfolderBase]: 6072/9600 cut-off events. [2024-05-12 13:05:24,798 INFO L125 PetriNetUnfolderBase]: For 228520/228554 co-relation queries the response was YES. [2024-05-12 13:05:24,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51230 conditions, 9600 events. 6072/9600 cut-off events. For 228520/228554 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 61796 event pairs, 879 based on Foata normal form. 17/9361 useless extension candidates. Maximal degree in co-relation 51156. Up to 6701 conditions per place. [2024-05-12 13:05:24,904 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 197 selfloop transitions, 72 changer transitions 0/286 dead transitions. [2024-05-12 13:05:24,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 286 transitions, 3069 flow [2024-05-12 13:05:24,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:05:24,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:05:24,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 245 transitions. [2024-05-12 13:05:24,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-05-12 13:05:24,907 INFO L175 Difference]: Start difference. First operand has 162 places, 213 transitions, 2119 flow. Second operand 9 states and 245 transitions. [2024-05-12 13:05:24,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 286 transitions, 3069 flow [2024-05-12 13:05:25,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 286 transitions, 2994 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-05-12 13:05:25,246 INFO L231 Difference]: Finished difference. Result has 165 places, 215 transitions, 2240 flow [2024-05-12 13:05:25,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2044, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2240, PETRI_PLACES=165, PETRI_TRANSITIONS=215} [2024-05-12 13:05:25,246 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 110 predicate places. [2024-05-12 13:05:25,246 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 215 transitions, 2240 flow [2024-05-12 13:05:25,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 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 13:05:25,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:05:25,247 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 13:05:25,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-05-12 13:05:25,247 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:05:25,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:05:25,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1941283367, now seen corresponding path program 2 times [2024-05-12 13:05:25,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:05:25,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70565412] [2024-05-12 13:05:25,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:05:25,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:05:25,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:05:26,379 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 13:05:26,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:05:26,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70565412] [2024-05-12 13:05:26,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70565412] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:05:26,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:05:26,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:05:26,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964874802] [2024-05-12 13:05:26,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:05:26,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:05:26,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:05:26,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:05:26,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:05:26,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-05-12 13:05:26,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 215 transitions, 2240 flow. Second operand has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 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 13:05:26,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:05:26,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-05-12 13:05:26,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:05:28,275 INFO L124 PetriNetUnfolderBase]: 6242/9818 cut-off events. [2024-05-12 13:05:28,275 INFO L125 PetriNetUnfolderBase]: For 248784/248818 co-relation queries the response was YES. [2024-05-12 13:05:28,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53928 conditions, 9818 events. 6242/9818 cut-off events. For 248784/248818 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 63259 event pairs, 1397 based on Foata normal form. 29/9623 useless extension candidates. Maximal degree in co-relation 53854. Up to 7675 conditions per place. [2024-05-12 13:05:28,374 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 206 selfloop transitions, 75 changer transitions 0/298 dead transitions. [2024-05-12 13:05:28,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 298 transitions, 3108 flow [2024-05-12 13:05:28,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:05:28,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:05:28,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 291 transitions. [2024-05-12 13:05:28,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5398886827458256 [2024-05-12 13:05:28,375 INFO L175 Difference]: Start difference. First operand has 165 places, 215 transitions, 2240 flow. Second operand 11 states and 291 transitions. [2024-05-12 13:05:28,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 298 transitions, 3108 flow [2024-05-12 13:05:28,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 298 transitions, 3014 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-05-12 13:05:28,716 INFO L231 Difference]: Finished difference. Result has 171 places, 217 transitions, 2347 flow [2024-05-12 13:05:28,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2146, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2347, PETRI_PLACES=171, PETRI_TRANSITIONS=217} [2024-05-12 13:05:28,716 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 116 predicate places. [2024-05-12 13:05:28,717 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 217 transitions, 2347 flow [2024-05-12 13:05:28,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 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 13:05:28,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:05:28,717 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 13:05:28,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-05-12 13:05:28,717 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:05:28,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:05:28,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1264512975, now seen corresponding path program 3 times [2024-05-12 13:05:28,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:05:28,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831921956] [2024-05-12 13:05:28,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:05:28,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:05:28,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:05:29,781 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 13:05:29,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:05:29,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831921956] [2024-05-12 13:05:29,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831921956] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:05:29,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:05:29,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:05:29,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862774282] [2024-05-12 13:05:29,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:05:29,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:05:29,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:05:29,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:05:29,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:05:29,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-05-12 13:05:29,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 217 transitions, 2347 flow. Second operand has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 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 13:05:29,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:05:29,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-05-12 13:05:29,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:05:31,625 INFO L124 PetriNetUnfolderBase]: 6372/10032 cut-off events. [2024-05-12 13:05:31,626 INFO L125 PetriNetUnfolderBase]: For 259027/259061 co-relation queries the response was YES. [2024-05-12 13:05:31,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56316 conditions, 10032 events. 6372/10032 cut-off events. For 259027/259061 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 64901 event pairs, 1396 based on Foata normal form. 17/9827 useless extension candidates. Maximal degree in co-relation 56240. Up to 7662 conditions per place. [2024-05-12 13:05:31,746 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 203 selfloop transitions, 75 changer transitions 0/295 dead transitions. [2024-05-12 13:05:31,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 295 transitions, 3187 flow [2024-05-12 13:05:31,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:05:31,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:05:31,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 271 transitions. [2024-05-12 13:05:31,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5530612244897959 [2024-05-12 13:05:31,748 INFO L175 Difference]: Start difference. First operand has 171 places, 217 transitions, 2347 flow. Second operand 10 states and 271 transitions. [2024-05-12 13:05:31,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 295 transitions, 3187 flow [2024-05-12 13:05:32,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 295 transitions, 3022 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-05-12 13:05:32,214 INFO L231 Difference]: Finished difference. Result has 172 places, 218 transitions, 2366 flow [2024-05-12 13:05:32,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2182, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2366, PETRI_PLACES=172, PETRI_TRANSITIONS=218} [2024-05-12 13:05:32,215 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 117 predicate places. [2024-05-12 13:05:32,215 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 218 transitions, 2366 flow [2024-05-12 13:05:32,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 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 13:05:32,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:05:32,215 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 13:05:32,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-05-12 13:05:32,216 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:05:32,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:05:32,216 INFO L85 PathProgramCache]: Analyzing trace with hash -978794875, now seen corresponding path program 1 times [2024-05-12 13:05:32,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:05:32,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536793466] [2024-05-12 13:05:32,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:05:32,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:05:32,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:05:32,965 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 13:05:32,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:05:32,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536793466] [2024-05-12 13:05:32,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536793466] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:05:32,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:05:32,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:05:32,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062643686] [2024-05-12 13:05:32,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:05:32,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:05:32,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:05:32,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:05:32,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:05:33,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2024-05-12 13:05:33,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 218 transitions, 2366 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 13:05:33,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:05:33,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2024-05-12 13:05:33,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:05:34,613 INFO L124 PetriNetUnfolderBase]: 7338/11275 cut-off events. [2024-05-12 13:05:34,613 INFO L125 PetriNetUnfolderBase]: For 267797/267803 co-relation queries the response was YES. [2024-05-12 13:05:34,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61888 conditions, 11275 events. 7338/11275 cut-off events. For 267797/267803 co-relation queries the response was YES. Maximal size of possible extension queue 458. Compared 70743 event pairs, 2184 based on Foata normal form. 6/11059 useless extension candidates. Maximal degree in co-relation 61811. Up to 10229 conditions per place. [2024-05-12 13:05:34,722 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 224 selfloop transitions, 43 changer transitions 0/275 dead transitions. [2024-05-12 13:05:34,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 275 transitions, 3334 flow [2024-05-12 13:05:34,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:05:34,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:05:34,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 171 transitions. [2024-05-12 13:05:34,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49854227405247814 [2024-05-12 13:05:34,723 INFO L175 Difference]: Start difference. First operand has 172 places, 218 transitions, 2366 flow. Second operand 7 states and 171 transitions. [2024-05-12 13:05:34,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 275 transitions, 3334 flow [2024-05-12 13:05:35,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 275 transitions, 3170 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-05-12 13:05:35,132 INFO L231 Difference]: Finished difference. Result has 173 places, 237 transitions, 2531 flow [2024-05-12 13:05:35,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2202, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2531, PETRI_PLACES=173, PETRI_TRANSITIONS=237} [2024-05-12 13:05:35,133 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 118 predicate places. [2024-05-12 13:05:35,133 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 237 transitions, 2531 flow [2024-05-12 13:05:35,134 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 13:05:35,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:05:35,134 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 13:05:35,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-05-12 13:05:35,134 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:05:35,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:05:35,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1719430993, now seen corresponding path program 4 times [2024-05-12 13:05:35,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:05:35,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804137811] [2024-05-12 13:05:35,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:05:35,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:05:35,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:05:36,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:05:36,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:05:36,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804137811] [2024-05-12 13:05:36,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804137811] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:05:36,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:05:36,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:05:36,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114362889] [2024-05-12 13:05:36,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:05:36,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:05:36,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:05:36,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:05:36,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:05:36,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-05-12 13:05:36,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 237 transitions, 2531 flow. Second operand has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 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 13:05:36,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:05:36,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-05-12 13:05:36,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:05:38,133 INFO L124 PetriNetUnfolderBase]: 6850/10423 cut-off events. [2024-05-12 13:05:38,133 INFO L125 PetriNetUnfolderBase]: For 309364/309384 co-relation queries the response was YES. [2024-05-12 13:05:38,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62380 conditions, 10423 events. 6850/10423 cut-off events. For 309364/309384 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 65028 event pairs, 964 based on Foata normal form. 17/10382 useless extension candidates. Maximal degree in co-relation 62300. Up to 7814 conditions per place. [2024-05-12 13:05:38,241 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 180 selfloop transitions, 116 changer transitions 0/318 dead transitions. [2024-05-12 13:05:38,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 318 transitions, 3769 flow [2024-05-12 13:05:38,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:05:38,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:05:38,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 253 transitions. [2024-05-12 13:05:38,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5736961451247166 [2024-05-12 13:05:38,243 INFO L175 Difference]: Start difference. First operand has 173 places, 237 transitions, 2531 flow. Second operand 9 states and 253 transitions. [2024-05-12 13:05:38,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 318 transitions, 3769 flow [2024-05-12 13:05:38,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 318 transitions, 3719 flow, removed 24 selfloop flow, removed 1 redundant places. [2024-05-12 13:05:38,640 INFO L231 Difference]: Finished difference. Result has 181 places, 241 transitions, 2829 flow [2024-05-12 13:05:38,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2481, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2829, PETRI_PLACES=181, PETRI_TRANSITIONS=241} [2024-05-12 13:05:38,641 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 126 predicate places. [2024-05-12 13:05:38,641 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 241 transitions, 2829 flow [2024-05-12 13:05:38,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 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 13:05:38,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:05:38,642 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 13:05:38,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-05-12 13:05:38,642 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:05:38,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:05:38,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1506638097, now seen corresponding path program 5 times [2024-05-12 13:05:38,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:05:38,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113685841] [2024-05-12 13:05:38,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:05:38,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:05:38,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:05:39,702 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 13:05:39,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:05:39,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113685841] [2024-05-12 13:05:39,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113685841] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:05:39,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:05:39,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:05:39,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384177248] [2024-05-12 13:05:39,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:05:39,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:05:39,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:05:39,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:05:39,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:05:39,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-05-12 13:05:39,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 241 transitions, 2829 flow. Second operand has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 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 13:05:39,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:05:39,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-05-12 13:05:39,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:05:41,785 INFO L124 PetriNetUnfolderBase]: 7171/11321 cut-off events. [2024-05-12 13:05:41,785 INFO L125 PetriNetUnfolderBase]: For 352350/352393 co-relation queries the response was YES. [2024-05-12 13:05:41,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67395 conditions, 11321 events. 7171/11321 cut-off events. For 352350/352393 co-relation queries the response was YES. Maximal size of possible extension queue 506. Compared 75270 event pairs, 1684 based on Foata normal form. 38/11151 useless extension candidates. Maximal degree in co-relation 67312. Up to 9056 conditions per place. [2024-05-12 13:05:41,931 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 227 selfloop transitions, 71 changer transitions 0/320 dead transitions. [2024-05-12 13:05:41,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 320 transitions, 3753 flow [2024-05-12 13:05:41,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:05:41,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:05:41,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 270 transitions. [2024-05-12 13:05:41,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5510204081632653 [2024-05-12 13:05:41,940 INFO L175 Difference]: Start difference. First operand has 181 places, 241 transitions, 2829 flow. Second operand 10 states and 270 transitions. [2024-05-12 13:05:41,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 320 transitions, 3753 flow [2024-05-12 13:05:42,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 320 transitions, 3585 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-05-12 13:05:42,480 INFO L231 Difference]: Finished difference. Result has 186 places, 243 transitions, 2878 flow [2024-05-12 13:05:42,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2661, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2878, PETRI_PLACES=186, PETRI_TRANSITIONS=243} [2024-05-12 13:05:42,482 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 131 predicate places. [2024-05-12 13:05:42,482 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 243 transitions, 2878 flow [2024-05-12 13:05:42,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 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 13:05:42,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:05:42,482 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 13:05:42,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-05-12 13:05:42,483 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:05:42,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:05:42,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1724941243, now seen corresponding path program 6 times [2024-05-12 13:05:42,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:05:42,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12404684] [2024-05-12 13:05:42,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:05:42,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:05:42,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:05:43,574 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 13:05:43,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:05:43,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12404684] [2024-05-12 13:05:43,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12404684] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:05:43,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:05:43,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:05:43,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911697869] [2024-05-12 13:05:43,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:05:43,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:05:43,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:05:43,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:05:43,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:05:43,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-05-12 13:05:43,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 243 transitions, 2878 flow. Second operand has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 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 13:05:43,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:05:43,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-05-12 13:05:43,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:05:45,638 INFO L124 PetriNetUnfolderBase]: 7466/11855 cut-off events. [2024-05-12 13:05:45,638 INFO L125 PetriNetUnfolderBase]: For 376149/376192 co-relation queries the response was YES. [2024-05-12 13:05:45,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71045 conditions, 11855 events. 7466/11855 cut-off events. For 376149/376192 co-relation queries the response was YES. Maximal size of possible extension queue 522. Compared 80035 event pairs, 1811 based on Foata normal form. 38/11659 useless extension candidates. Maximal degree in co-relation 70960. Up to 9768 conditions per place. [2024-05-12 13:05:45,796 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 242 selfloop transitions, 51 changer transitions 0/315 dead transitions. [2024-05-12 13:05:45,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 315 transitions, 3776 flow [2024-05-12 13:05:45,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:05:45,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:05:45,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 261 transitions. [2024-05-12 13:05:45,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5326530612244897 [2024-05-12 13:05:45,798 INFO L175 Difference]: Start difference. First operand has 186 places, 243 transitions, 2878 flow. Second operand 10 states and 261 transitions. [2024-05-12 13:05:45,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 315 transitions, 3776 flow [2024-05-12 13:05:46,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 315 transitions, 3619 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-05-12 13:05:46,427 INFO L231 Difference]: Finished difference. Result has 189 places, 245 transitions, 2900 flow [2024-05-12 13:05:46,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2721, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2900, PETRI_PLACES=189, PETRI_TRANSITIONS=245} [2024-05-12 13:05:46,428 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 134 predicate places. [2024-05-12 13:05:46,428 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 245 transitions, 2900 flow [2024-05-12 13:05:46,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 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 13:05:46,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:05:46,428 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 13:05:46,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-05-12 13:05:46,429 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:05:46,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:05:46,429 INFO L85 PathProgramCache]: Analyzing trace with hash -978466585, now seen corresponding path program 2 times [2024-05-12 13:05:46,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:05:46,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579648832] [2024-05-12 13:05:46,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:05:46,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:05:46,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:05:47,242 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 13:05:47,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:05:47,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579648832] [2024-05-12 13:05:47,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579648832] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:05:47,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:05:47,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:05:47,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722532019] [2024-05-12 13:05:47,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:05:47,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:05:47,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:05:47,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:05:47,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:05:47,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2024-05-12 13:05:47,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 245 transitions, 2900 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 13:05:47,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:05:47,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2024-05-12 13:05:47,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:05:49,169 INFO L124 PetriNetUnfolderBase]: 8535/13275 cut-off events. [2024-05-12 13:05:49,169 INFO L125 PetriNetUnfolderBase]: For 369219/369225 co-relation queries the response was YES. [2024-05-12 13:05:49,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77109 conditions, 13275 events. 8535/13275 cut-off events. For 369219/369225 co-relation queries the response was YES. Maximal size of possible extension queue 536. Compared 87156 event pairs, 2592 based on Foata normal form. 6/13006 useless extension candidates. Maximal degree in co-relation 77023. Up to 12032 conditions per place. [2024-05-12 13:05:49,348 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 231 selfloop transitions, 46 changer transitions 0/285 dead transitions. [2024-05-12 13:05:49,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 285 transitions, 3815 flow [2024-05-12 13:05:49,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:05:49,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:05:49,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 165 transitions. [2024-05-12 13:05:49,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48104956268221577 [2024-05-12 13:05:49,349 INFO L175 Difference]: Start difference. First operand has 189 places, 245 transitions, 2900 flow. Second operand 7 states and 165 transitions. [2024-05-12 13:05:49,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 285 transitions, 3815 flow [2024-05-12 13:05:50,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 285 transitions, 3690 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-05-12 13:05:50,081 INFO L231 Difference]: Finished difference. Result has 189 places, 253 transitions, 2988 flow [2024-05-12 13:05:50,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2775, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2988, PETRI_PLACES=189, PETRI_TRANSITIONS=253} [2024-05-12 13:05:50,082 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 134 predicate places. [2024-05-12 13:05:50,082 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 253 transitions, 2988 flow [2024-05-12 13:05:50,082 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 13:05:50,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:05:50,082 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 13:05:50,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-05-12 13:05:50,083 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:05:50,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:05:50,083 INFO L85 PathProgramCache]: Analyzing trace with hash -978466182, now seen corresponding path program 1 times [2024-05-12 13:05:50,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:05:50,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353033647] [2024-05-12 13:05:50,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:05:50,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:05:50,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:05:50,872 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 13:05:50,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:05:50,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353033647] [2024-05-12 13:05:50,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353033647] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:05:50,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:05:50,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:05:50,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642817718] [2024-05-12 13:05:50,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:05:50,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:05:50,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:05:50,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:05:50,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:05:50,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-05-12 13:05:50,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 253 transitions, 2988 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 13:05:50,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:05:50,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-05-12 13:05:50,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:05:52,773 INFO L124 PetriNetUnfolderBase]: 8315/13050 cut-off events. [2024-05-12 13:05:52,773 INFO L125 PetriNetUnfolderBase]: For 373778/373803 co-relation queries the response was YES. [2024-05-12 13:05:52,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75069 conditions, 13050 events. 8315/13050 cut-off events. For 373778/373803 co-relation queries the response was YES. Maximal size of possible extension queue 533. Compared 86628 event pairs, 2572 based on Foata normal form. 28/12775 useless extension candidates. Maximal degree in co-relation 74981. Up to 11777 conditions per place. [2024-05-12 13:05:52,918 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 237 selfloop transitions, 26 changer transitions 0/298 dead transitions. [2024-05-12 13:05:52,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 298 transitions, 3814 flow [2024-05-12 13:05:52,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:05:52,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:05:52,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-05-12 13:05:52,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4956268221574344 [2024-05-12 13:05:52,920 INFO L175 Difference]: Start difference. First operand has 189 places, 253 transitions, 2988 flow. Second operand 7 states and 170 transitions. [2024-05-12 13:05:52,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 298 transitions, 3814 flow [2024-05-12 13:05:53,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 298 transitions, 3723 flow, removed 20 selfloop flow, removed 3 redundant places. [2024-05-12 13:05:53,488 INFO L231 Difference]: Finished difference. Result has 194 places, 263 transitions, 3088 flow [2024-05-12 13:05:53,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2897, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3088, PETRI_PLACES=194, PETRI_TRANSITIONS=263} [2024-05-12 13:05:53,489 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 139 predicate places. [2024-05-12 13:05:53,489 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 263 transitions, 3088 flow [2024-05-12 13:05:53,492 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 13:05:53,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:05:53,492 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 13:05:53,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-05-12 13:05:53,493 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:05:53,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:05:53,493 INFO L85 PathProgramCache]: Analyzing trace with hash -2005885650, now seen corresponding path program 1 times [2024-05-12 13:05:53,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:05:53,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743213150] [2024-05-12 13:05:53,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:05:53,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:05:53,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:05:54,579 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 13:05:54,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:05:54,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743213150] [2024-05-12 13:05:54,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743213150] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:05:54,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:05:54,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:05:54,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810163827] [2024-05-12 13:05:54,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:05:54,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:05:54,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:05:54,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:05:54,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:05:54,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-05-12 13:05:54,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 263 transitions, 3088 flow. Second operand has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 13:05:54,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:05:54,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-05-12 13:05:54,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:05:56,953 INFO L124 PetriNetUnfolderBase]: 8295/13086 cut-off events. [2024-05-12 13:05:56,953 INFO L125 PetriNetUnfolderBase]: For 401380/401430 co-relation queries the response was YES. [2024-05-12 13:05:57,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78018 conditions, 13086 events. 8295/13086 cut-off events. For 401380/401430 co-relation queries the response was YES. Maximal size of possible extension queue 556. Compared 87482 event pairs, 2712 based on Foata normal form. 10/12840 useless extension candidates. Maximal degree in co-relation 77928. Up to 11640 conditions per place. [2024-05-12 13:05:57,087 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 266 selfloop transitions, 32 changer transitions 0/320 dead transitions. [2024-05-12 13:05:57,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 320 transitions, 3937 flow [2024-05-12 13:05:57,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:05:57,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:05:57,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 216 transitions. [2024-05-12 13:05:57,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4897959183673469 [2024-05-12 13:05:57,092 INFO L175 Difference]: Start difference. First operand has 194 places, 263 transitions, 3088 flow. Second operand 9 states and 216 transitions. [2024-05-12 13:05:57,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 320 transitions, 3937 flow [2024-05-12 13:05:57,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 320 transitions, 3895 flow, removed 18 selfloop flow, removed 2 redundant places. [2024-05-12 13:05:57,702 INFO L231 Difference]: Finished difference. Result has 202 places, 268 transitions, 3205 flow [2024-05-12 13:05:57,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3046, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3205, PETRI_PLACES=202, PETRI_TRANSITIONS=268} [2024-05-12 13:05:57,704 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 147 predicate places. [2024-05-12 13:05:57,704 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 268 transitions, 3205 flow [2024-05-12 13:05:57,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 13:05:57,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:05:57,704 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 13:05:57,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-05-12 13:05:57,705 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:05:57,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:05:57,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1735255931, now seen corresponding path program 7 times [2024-05-12 13:05:57,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:05:57,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412057065] [2024-05-12 13:05:57,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:05:57,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:05:57,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:05:58,823 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 13:05:58,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:05:58,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412057065] [2024-05-12 13:05:58,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412057065] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:05:58,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:05:58,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:05:58,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216478708] [2024-05-12 13:05:58,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:05:58,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:05:58,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:05:58,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:05:58,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:05:58,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-05-12 13:05:58,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 268 transitions, 3205 flow. Second operand has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 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 13:05:58,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:05:58,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-05-12 13:05:58,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:06:01,233 INFO L124 PetriNetUnfolderBase]: 8034/12811 cut-off events. [2024-05-12 13:06:01,233 INFO L125 PetriNetUnfolderBase]: For 452980/453030 co-relation queries the response was YES. [2024-05-12 13:06:01,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78352 conditions, 12811 events. 8034/12811 cut-off events. For 452980/453030 co-relation queries the response was YES. Maximal size of possible extension queue 573. Compared 88009 event pairs, 2442 based on Foata normal form. 42/12611 useless extension candidates. Maximal degree in co-relation 78258. Up to 10897 conditions per place. [2024-05-12 13:06:01,386 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 273 selfloop transitions, 37 changer transitions 0/335 dead transitions. [2024-05-12 13:06:01,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 335 transitions, 4131 flow [2024-05-12 13:06:01,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:06:01,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:06:01,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 252 transitions. [2024-05-12 13:06:01,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5142857142857142 [2024-05-12 13:06:01,387 INFO L175 Difference]: Start difference. First operand has 202 places, 268 transitions, 3205 flow. Second operand 10 states and 252 transitions. [2024-05-12 13:06:01,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 335 transitions, 4131 flow [2024-05-12 13:06:02,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 335 transitions, 4022 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-05-12 13:06:02,115 INFO L231 Difference]: Finished difference. Result has 206 places, 270 transitions, 3253 flow [2024-05-12 13:06:02,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3096, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3253, PETRI_PLACES=206, PETRI_TRANSITIONS=270} [2024-05-12 13:06:02,116 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 151 predicate places. [2024-05-12 13:06:02,116 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 270 transitions, 3253 flow [2024-05-12 13:06:02,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 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 13:06:02,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:06:02,116 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 13:06:02,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-05-12 13:06:02,117 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:06:02,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:06:02,117 INFO L85 PathProgramCache]: Analyzing trace with hash -467130818, now seen corresponding path program 2 times [2024-05-12 13:06:02,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:06:02,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310756311] [2024-05-12 13:06:02,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:06:02,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:06:02,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:06:03,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:06:03,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:06:03,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310756311] [2024-05-12 13:06:03,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310756311] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:06:03,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:06:03,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:06:03,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614945907] [2024-05-12 13:06:03,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:06:03,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:06:03,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:06:03,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:06:03,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:06:03,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-05-12 13:06:03,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 270 transitions, 3253 flow. Second operand has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 13:06:03,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:06:03,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-05-12 13:06:03,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:06:05,381 INFO L124 PetriNetUnfolderBase]: 8666/13729 cut-off events. [2024-05-12 13:06:05,382 INFO L125 PetriNetUnfolderBase]: For 454100/454150 co-relation queries the response was YES. [2024-05-12 13:06:05,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83788 conditions, 13729 events. 8666/13729 cut-off events. For 454100/454150 co-relation queries the response was YES. Maximal size of possible extension queue 580. Compared 93075 event pairs, 2842 based on Foata normal form. 10/13464 useless extension candidates. Maximal degree in co-relation 83693. Up to 12275 conditions per place. [2024-05-12 13:06:05,550 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 275 selfloop transitions, 27 changer transitions 0/324 dead transitions. [2024-05-12 13:06:05,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 324 transitions, 4112 flow [2024-05-12 13:06:05,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:06:05,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:06:05,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 213 transitions. [2024-05-12 13:06:05,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48299319727891155 [2024-05-12 13:06:05,551 INFO L175 Difference]: Start difference. First operand has 206 places, 270 transitions, 3253 flow. Second operand 9 states and 213 transitions. [2024-05-12 13:06:05,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 324 transitions, 4112 flow [2024-05-12 13:06:06,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 324 transitions, 4005 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-05-12 13:06:06,333 INFO L231 Difference]: Finished difference. Result has 208 places, 275 transitions, 3321 flow [2024-05-12 13:06:06,333 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3150, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3321, PETRI_PLACES=208, PETRI_TRANSITIONS=275} [2024-05-12 13:06:06,333 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 153 predicate places. [2024-05-12 13:06:06,333 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 275 transitions, 3321 flow [2024-05-12 13:06:06,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 13:06:06,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:06:06,334 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 13:06:06,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-05-12 13:06:06,334 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:06:06,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:06:06,334 INFO L85 PathProgramCache]: Analyzing trace with hash -467346299, now seen corresponding path program 8 times [2024-05-12 13:06:06,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:06:06,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485540122] [2024-05-12 13:06:06,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:06:06,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:06:06,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:06:07,418 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 13:06:07,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:06:07,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485540122] [2024-05-12 13:06:07,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485540122] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:06:07,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:06:07,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:06:07,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049051837] [2024-05-12 13:06:07,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:06:07,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:06:07,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:06:07,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:06:07,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:06:07,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-05-12 13:06:07,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 275 transitions, 3321 flow. Second operand has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 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 13:06:07,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:06:07,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-05-12 13:06:07,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:06:10,085 INFO L124 PetriNetUnfolderBase]: 8105/12914 cut-off events. [2024-05-12 13:06:10,085 INFO L125 PetriNetUnfolderBase]: For 468022/468072 co-relation queries the response was YES. [2024-05-12 13:06:10,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78953 conditions, 12914 events. 8105/12914 cut-off events. For 468022/468072 co-relation queries the response was YES. Maximal size of possible extension queue 580. Compared 88756 event pairs, 2434 based on Foata normal form. 42/12712 useless extension candidates. Maximal degree in co-relation 78856. Up to 11026 conditions per place. [2024-05-12 13:06:10,205 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 280 selfloop transitions, 32 changer transitions 0/338 dead transitions. [2024-05-12 13:06:10,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 338 transitions, 4201 flow [2024-05-12 13:06:10,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:06:10,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:06:10,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 248 transitions. [2024-05-12 13:06:10,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5061224489795918 [2024-05-12 13:06:10,206 INFO L175 Difference]: Start difference. First operand has 208 places, 275 transitions, 3321 flow. Second operand 10 states and 248 transitions. [2024-05-12 13:06:10,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 338 transitions, 4201 flow [2024-05-12 13:06:11,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 338 transitions, 4088 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-05-12 13:06:11,037 INFO L231 Difference]: Finished difference. Result has 212 places, 276 transitions, 3323 flow [2024-05-12 13:06:11,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3208, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3323, PETRI_PLACES=212, PETRI_TRANSITIONS=276} [2024-05-12 13:06:11,038 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 157 predicate places. [2024-05-12 13:06:11,038 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 276 transitions, 3323 flow [2024-05-12 13:06:11,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 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 13:06:11,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:06:11,038 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 13:06:11,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-05-12 13:06:11,038 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:06:11,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:06:11,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1076496840, now seen corresponding path program 3 times [2024-05-12 13:06:11,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:06:11,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163382239] [2024-05-12 13:06:11,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:06:11,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:06:11,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:06:12,100 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 13:06:12,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:06:12,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163382239] [2024-05-12 13:06:12,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163382239] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:06:12,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:06:12,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:06:12,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359282528] [2024-05-12 13:06:12,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:06:12,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:06:12,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:06:12,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:06:12,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:06:12,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-05-12 13:06:12,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 276 transitions, 3323 flow. Second operand has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 13:06:12,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:06:12,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-05-12 13:06:12,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:06:14,519 INFO L124 PetriNetUnfolderBase]: 8744/13885 cut-off events. [2024-05-12 13:06:14,519 INFO L125 PetriNetUnfolderBase]: For 459573/459623 co-relation queries the response was YES. [2024-05-12 13:06:14,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84050 conditions, 13885 events. 8744/13885 cut-off events. For 459573/459623 co-relation queries the response was YES. Maximal size of possible extension queue 585. Compared 94563 event pairs, 2862 based on Foata normal form. 10/13612 useless extension candidates. Maximal degree in co-relation 83952. Up to 12446 conditions per place. [2024-05-12 13:06:14,694 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 280 selfloop transitions, 23 changer transitions 0/325 dead transitions. [2024-05-12 13:06:14,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 325 transitions, 4139 flow [2024-05-12 13:06:14,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:06:14,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:06:14,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 209 transitions. [2024-05-12 13:06:14,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47392290249433106 [2024-05-12 13:06:14,695 INFO L175 Difference]: Start difference. First operand has 212 places, 276 transitions, 3323 flow. Second operand 9 states and 209 transitions. [2024-05-12 13:06:14,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 325 transitions, 4139 flow [2024-05-12 13:06:15,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 325 transitions, 4025 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-05-12 13:06:15,763 INFO L231 Difference]: Finished difference. Result has 214 places, 280 transitions, 3353 flow [2024-05-12 13:06:15,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3211, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3353, PETRI_PLACES=214, PETRI_TRANSITIONS=280} [2024-05-12 13:06:15,763 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 159 predicate places. [2024-05-12 13:06:15,764 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 280 transitions, 3353 flow [2024-05-12 13:06:15,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 13:06:15,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:06:15,764 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 13:06:15,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-05-12 13:06:15,764 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:06:15,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:06:15,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1363998900, now seen corresponding path program 4 times [2024-05-12 13:06:15,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:06:15,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169148629] [2024-05-12 13:06:15,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:06:15,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:06:15,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:06:16,880 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 13:06:16,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:06:16,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169148629] [2024-05-12 13:06:16,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169148629] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:06:16,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:06:16,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:06:16,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485396988] [2024-05-12 13:06:16,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:06:16,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:06:16,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:06:16,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:06:16,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:06:17,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-05-12 13:06:17,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 280 transitions, 3353 flow. Second operand has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 13:06:17,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:06:17,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-05-12 13:06:17,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:06:19,458 INFO L124 PetriNetUnfolderBase]: 8797/14011 cut-off events. [2024-05-12 13:06:19,459 INFO L125 PetriNetUnfolderBase]: For 464921/464979 co-relation queries the response was YES. [2024-05-12 13:06:19,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83931 conditions, 14011 events. 8797/14011 cut-off events. For 464921/464979 co-relation queries the response was YES. Maximal size of possible extension queue 593. Compared 95957 event pairs, 2732 based on Foata normal form. 10/13719 useless extension candidates. Maximal degree in co-relation 83831. Up to 12485 conditions per place. [2024-05-12 13:06:19,638 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 283 selfloop transitions, 30 changer transitions 0/335 dead transitions. [2024-05-12 13:06:19,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 335 transitions, 4195 flow [2024-05-12 13:06:19,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:06:19,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:06:19,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 213 transitions. [2024-05-12 13:06:19,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48299319727891155 [2024-05-12 13:06:19,639 INFO L175 Difference]: Start difference. First operand has 214 places, 280 transitions, 3353 flow. Second operand 9 states and 213 transitions. [2024-05-12 13:06:19,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 335 transitions, 4195 flow [2024-05-12 13:06:20,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 335 transitions, 4098 flow, removed 30 selfloop flow, removed 5 redundant places. [2024-05-12 13:06:20,778 INFO L231 Difference]: Finished difference. Result has 219 places, 285 transitions, 3413 flow [2024-05-12 13:06:20,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3256, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3413, PETRI_PLACES=219, PETRI_TRANSITIONS=285} [2024-05-12 13:06:20,782 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 164 predicate places. [2024-05-12 13:06:20,783 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 285 transitions, 3413 flow [2024-05-12 13:06:20,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 13:06:20,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:06:20,783 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 13:06:20,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-05-12 13:06:20,784 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:06:20,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:06:20,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1917253595, now seen corresponding path program 1 times [2024-05-12 13:06:20,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:06:20,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234527501] [2024-05-12 13:06:20,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:06:20,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:06:20,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:06:21,843 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 13:06:21,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:06:21,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234527501] [2024-05-12 13:06:21,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234527501] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:06:21,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:06:21,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:06:21,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367887798] [2024-05-12 13:06:21,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:06:21,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:06:21,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:06:21,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:06:21,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:06:21,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-05-12 13:06:21,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 285 transitions, 3413 flow. Second operand has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 13:06:21,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:06:21,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-05-12 13:06:21,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:06:24,451 INFO L124 PetriNetUnfolderBase]: 8845/14077 cut-off events. [2024-05-12 13:06:24,452 INFO L125 PetriNetUnfolderBase]: For 480065/480123 co-relation queries the response was YES. [2024-05-12 13:06:24,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85136 conditions, 14077 events. 8845/14077 cut-off events. For 480065/480123 co-relation queries the response was YES. Maximal size of possible extension queue 596. Compared 96462 event pairs, 2824 based on Foata normal form. 8/13783 useless extension candidates. Maximal degree in co-relation 85034. Up to 12507 conditions per place. [2024-05-12 13:06:24,593 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 283 selfloop transitions, 37 changer transitions 0/342 dead transitions. [2024-05-12 13:06:24,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 342 transitions, 4299 flow [2024-05-12 13:06:24,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:06:24,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:06:24,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 215 transitions. [2024-05-12 13:06:24,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4875283446712018 [2024-05-12 13:06:24,595 INFO L175 Difference]: Start difference. First operand has 219 places, 285 transitions, 3413 flow. Second operand 9 states and 215 transitions. [2024-05-12 13:06:24,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 342 transitions, 4299 flow [2024-05-12 13:06:25,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 342 transitions, 4148 flow, removed 49 selfloop flow, removed 6 redundant places. [2024-05-12 13:06:25,607 INFO L231 Difference]: Finished difference. Result has 222 places, 291 transitions, 3442 flow [2024-05-12 13:06:25,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3274, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3442, PETRI_PLACES=222, PETRI_TRANSITIONS=291} [2024-05-12 13:06:25,608 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 167 predicate places. [2024-05-12 13:06:25,608 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 291 transitions, 3442 flow [2024-05-12 13:06:25,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 13:06:25,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:06:25,609 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 13:06:25,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-05-12 13:06:25,609 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:06:25,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:06:25,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1363643640, now seen corresponding path program 5 times [2024-05-12 13:06:25,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:06:25,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531843053] [2024-05-12 13:06:25,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:06:25,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:06:25,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:06:26,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:06:26,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:06:26,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531843053] [2024-05-12 13:06:26,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531843053] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:06:26,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:06:26,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:06:26,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900359356] [2024-05-12 13:06:26,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:06:26,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:06:26,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:06:26,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:06:26,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:06:26,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-05-12 13:06:26,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 291 transitions, 3442 flow. Second operand has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 13:06:26,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:06:26,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-05-12 13:06:26,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:06:29,605 INFO L124 PetriNetUnfolderBase]: 8845/14084 cut-off events. [2024-05-12 13:06:29,605 INFO L125 PetriNetUnfolderBase]: For 492666/492724 co-relation queries the response was YES. [2024-05-12 13:06:29,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85022 conditions, 14084 events. 8845/14084 cut-off events. For 492666/492724 co-relation queries the response was YES. Maximal size of possible extension queue 597. Compared 96484 event pairs, 2825 based on Foata normal form. 10/13790 useless extension candidates. Maximal degree in co-relation 84919. Up to 12504 conditions per place. [2024-05-12 13:06:29,774 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 287 selfloop transitions, 35 changer transitions 0/344 dead transitions. [2024-05-12 13:06:29,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 344 transitions, 4304 flow [2024-05-12 13:06:29,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:06:29,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:06:29,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 214 transitions. [2024-05-12 13:06:29,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4852607709750567 [2024-05-12 13:06:29,776 INFO L175 Difference]: Start difference. First operand has 222 places, 291 transitions, 3442 flow. Second operand 9 states and 214 transitions. [2024-05-12 13:06:29,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 344 transitions, 4304 flow [2024-05-12 13:06:30,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 344 transitions, 4236 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-05-12 13:06:30,723 INFO L231 Difference]: Finished difference. Result has 224 places, 293 transitions, 3514 flow [2024-05-12 13:06:30,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3374, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3514, PETRI_PLACES=224, PETRI_TRANSITIONS=293} [2024-05-12 13:06:30,724 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 169 predicate places. [2024-05-12 13:06:30,724 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 293 transitions, 3514 flow [2024-05-12 13:06:30,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 13:06:30,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:06:30,724 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 13:06:30,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-05-12 13:06:30,725 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:06:30,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:06:30,725 INFO L85 PathProgramCache]: Analyzing trace with hash -565607562, now seen corresponding path program 2 times [2024-05-12 13:06:30,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:06:30,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669195437] [2024-05-12 13:06:30,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:06:30,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:06:30,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:06:31,393 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 13:06:31,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:06:31,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669195437] [2024-05-12 13:06:31,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669195437] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:06:31,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:06:31,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:06:31,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42588302] [2024-05-12 13:06:31,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:06:31,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:06:31,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:06:31,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:06:31,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:06:31,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-05-12 13:06:31,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 293 transitions, 3514 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 13:06:31,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:06:31,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-05-12 13:06:31,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:06:33,707 INFO L124 PetriNetUnfolderBase]: 8940/14237 cut-off events. [2024-05-12 13:06:33,708 INFO L125 PetriNetUnfolderBase]: For 509149/509191 co-relation queries the response was YES. [2024-05-12 13:06:33,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85556 conditions, 14237 events. 8940/14237 cut-off events. For 509149/509191 co-relation queries the response was YES. Maximal size of possible extension queue 594. Compared 97771 event pairs, 3014 based on Foata normal form. 45/13961 useless extension candidates. Maximal degree in co-relation 85452. Up to 12814 conditions per place. [2024-05-12 13:06:33,885 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 266 selfloop transitions, 17 changer transitions 0/318 dead transitions. [2024-05-12 13:06:33,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 318 transitions, 4192 flow [2024-05-12 13:06:33,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:06:33,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:06:33,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 155 transitions. [2024-05-12 13:06:33,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4518950437317784 [2024-05-12 13:06:33,886 INFO L175 Difference]: Start difference. First operand has 224 places, 293 transitions, 3514 flow. Second operand 7 states and 155 transitions. [2024-05-12 13:06:33,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 318 transitions, 4192 flow [2024-05-12 13:06:34,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 318 transitions, 4080 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-05-12 13:06:34,817 INFO L231 Difference]: Finished difference. Result has 224 places, 296 transitions, 3496 flow [2024-05-12 13:06:34,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3402, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3496, PETRI_PLACES=224, PETRI_TRANSITIONS=296} [2024-05-12 13:06:34,818 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 169 predicate places. [2024-05-12 13:06:34,818 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 296 transitions, 3496 flow [2024-05-12 13:06:34,818 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 13:06:34,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:06:34,818 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 13:06:34,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-05-12 13:06:34,818 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:06:34,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:06:34,819 INFO L85 PathProgramCache]: Analyzing trace with hash -566082265, now seen corresponding path program 3 times [2024-05-12 13:06:34,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:06:34,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805199961] [2024-05-12 13:06:34,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:06:34,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:06:34,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:06:35,553 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 13:06:35,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:06:35,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805199961] [2024-05-12 13:06:35,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805199961] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:06:35,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:06:35,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:06:35,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199403086] [2024-05-12 13:06:35,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:06:35,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:06:35,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:06:35,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:06:35,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:06:35,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2024-05-12 13:06:35,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 296 transitions, 3496 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 13:06:35,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:06:35,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2024-05-12 13:06:35,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:06:37,981 INFO L124 PetriNetUnfolderBase]: 9257/14591 cut-off events. [2024-05-12 13:06:37,982 INFO L125 PetriNetUnfolderBase]: For 519657/519663 co-relation queries the response was YES. [2024-05-12 13:06:38,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87638 conditions, 14591 events. 9257/14591 cut-off events. For 519657/519663 co-relation queries the response was YES. Maximal size of possible extension queue 596. Compared 98771 event pairs, 3101 based on Foata normal form. 6/14306 useless extension candidates. Maximal degree in co-relation 87533. Up to 13331 conditions per place. [2024-05-12 13:06:38,159 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 282 selfloop transitions, 29 changer transitions 0/319 dead transitions. [2024-05-12 13:06:38,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 319 transitions, 4300 flow [2024-05-12 13:06:38,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:06:38,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:06:38,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 154 transitions. [2024-05-12 13:06:38,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4489795918367347 [2024-05-12 13:06:38,160 INFO L175 Difference]: Start difference. First operand has 224 places, 296 transitions, 3496 flow. Second operand 7 states and 154 transitions. [2024-05-12 13:06:38,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 319 transitions, 4300 flow [2024-05-12 13:06:39,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 319 transitions, 4202 flow, removed 31 selfloop flow, removed 5 redundant places. [2024-05-12 13:06:39,398 INFO L231 Difference]: Finished difference. Result has 226 places, 296 transitions, 3464 flow [2024-05-12 13:06:39,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3398, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3464, PETRI_PLACES=226, PETRI_TRANSITIONS=296} [2024-05-12 13:06:39,398 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 171 predicate places. [2024-05-12 13:06:39,398 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 296 transitions, 3464 flow [2024-05-12 13:06:39,399 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 13:06:39,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:06:39,399 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 13:06:39,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-05-12 13:06:39,399 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:06:39,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:06:39,399 INFO L85 PathProgramCache]: Analyzing trace with hash -566081862, now seen corresponding path program 3 times [2024-05-12 13:06:39,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:06:39,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321414479] [2024-05-12 13:06:39,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:06:39,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:06:39,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:06:40,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:06:40,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:06:40,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321414479] [2024-05-12 13:06:40,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321414479] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:06:40,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:06:40,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:06:40,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542625731] [2024-05-12 13:06:40,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:06:40,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:06:40,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:06:40,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:06:40,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:06:40,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-05-12 13:06:40,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 296 transitions, 3464 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 13:06:40,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:06:40,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-05-12 13:06:40,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:06:42,488 INFO L124 PetriNetUnfolderBase]: 8927/14208 cut-off events. [2024-05-12 13:06:42,489 INFO L125 PetriNetUnfolderBase]: For 526770/526812 co-relation queries the response was YES. [2024-05-12 13:06:42,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85058 conditions, 14208 events. 8927/14208 cut-off events. For 526770/526812 co-relation queries the response was YES. Maximal size of possible extension queue 592. Compared 97497 event pairs, 3029 based on Foata normal form. 45/13935 useless extension candidates. Maximal degree in co-relation 84953. Up to 12755 conditions per place. [2024-05-12 13:06:42,695 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 265 selfloop transitions, 22 changer transitions 0/322 dead transitions. [2024-05-12 13:06:42,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 322 transitions, 4126 flow [2024-05-12 13:06:42,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:06:42,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:06:42,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2024-05-12 13:06:42,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46647230320699706 [2024-05-12 13:06:42,697 INFO L175 Difference]: Start difference. First operand has 226 places, 296 transitions, 3464 flow. Second operand 7 states and 160 transitions. [2024-05-12 13:06:42,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 322 transitions, 4126 flow [2024-05-12 13:06:43,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 322 transitions, 3966 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-05-12 13:06:43,767 INFO L231 Difference]: Finished difference. Result has 226 places, 296 transitions, 3354 flow [2024-05-12 13:06:43,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3304, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3354, PETRI_PLACES=226, PETRI_TRANSITIONS=296} [2024-05-12 13:06:43,768 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 171 predicate places. [2024-05-12 13:06:43,768 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 296 transitions, 3354 flow [2024-05-12 13:06:43,768 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 13:06:43,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:06:43,768 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 13:06:43,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-05-12 13:06:43,768 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:06:43,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:06:43,769 INFO L85 PathProgramCache]: Analyzing trace with hash 713778100, now seen corresponding path program 1 times [2024-05-12 13:06:43,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:06:43,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695664849] [2024-05-12 13:06:43,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:06:43,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:06:43,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:06:44,443 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 13:06:44,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:06:44,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695664849] [2024-05-12 13:06:44,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695664849] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:06:44,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:06:44,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:06:44,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506222441] [2024-05-12 13:06:44,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:06:44,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:06:44,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:06:44,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:06:44,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:06:44,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2024-05-12 13:06:44,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 296 transitions, 3354 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 13:06:44,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:06:44,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2024-05-12 13:06:44,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:06:46,834 INFO L124 PetriNetUnfolderBase]: 9265/14627 cut-off events. [2024-05-12 13:06:46,834 INFO L125 PetriNetUnfolderBase]: For 539051/539051 co-relation queries the response was YES. [2024-05-12 13:06:46,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87419 conditions, 14627 events. 9265/14627 cut-off events. For 539051/539051 co-relation queries the response was YES. Maximal size of possible extension queue 603. Compared 99350 event pairs, 3072 based on Foata normal form. 1/14330 useless extension candidates. Maximal degree in co-relation 87315. Up to 13342 conditions per place. [2024-05-12 13:06:47,013 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 285 selfloop transitions, 40 changer transitions 0/333 dead transitions. [2024-05-12 13:06:47,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 333 transitions, 4278 flow [2024-05-12 13:06:47,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:06:47,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:06:47,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2024-05-12 13:06:47,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46647230320699706 [2024-05-12 13:06:47,014 INFO L175 Difference]: Start difference. First operand has 226 places, 296 transitions, 3354 flow. Second operand 7 states and 160 transitions. [2024-05-12 13:06:47,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 333 transitions, 4278 flow [2024-05-12 13:06:48,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 333 transitions, 4198 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-05-12 13:06:48,257 INFO L231 Difference]: Finished difference. Result has 227 places, 302 transitions, 3435 flow [2024-05-12 13:06:48,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3274, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3435, PETRI_PLACES=227, PETRI_TRANSITIONS=302} [2024-05-12 13:06:48,257 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 172 predicate places. [2024-05-12 13:06:48,257 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 302 transitions, 3435 flow [2024-05-12 13:06:48,257 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 13:06:48,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:06:48,258 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 13:06:48,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-05-12 13:06:48,258 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:06:48,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:06:48,259 INFO L85 PathProgramCache]: Analyzing trace with hash -772521216, now seen corresponding path program 2 times [2024-05-12 13:06:48,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:06:48,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237009978] [2024-05-12 13:06:48,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:06:48,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:06:48,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:06:49,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:06:49,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:06:49,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237009978] [2024-05-12 13:06:49,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237009978] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:06:49,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:06:49,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:06:49,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500222847] [2024-05-12 13:06:49,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:06:49,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:06:49,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:06:49,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:06:49,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:06:49,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2024-05-12 13:06:49,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 302 transitions, 3435 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 13:06:49,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:06:49,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2024-05-12 13:06:49,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:06:51,533 INFO L124 PetriNetUnfolderBase]: 9282/14654 cut-off events. [2024-05-12 13:06:51,533 INFO L125 PetriNetUnfolderBase]: For 557608/557608 co-relation queries the response was YES. [2024-05-12 13:06:51,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88707 conditions, 14654 events. 9282/14654 cut-off events. For 557608/557608 co-relation queries the response was YES. Maximal size of possible extension queue 605. Compared 99615 event pairs, 3072 based on Foata normal form. 1/14356 useless extension candidates. Maximal degree in co-relation 88602. Up to 13360 conditions per place. [2024-05-12 13:06:51,723 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 286 selfloop transitions, 41 changer transitions 0/335 dead transitions. [2024-05-12 13:06:51,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 335 transitions, 4352 flow [2024-05-12 13:06:51,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:06:51,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:06:51,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 158 transitions. [2024-05-12 13:06:51,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4606413994169096 [2024-05-12 13:06:51,724 INFO L175 Difference]: Start difference. First operand has 227 places, 302 transitions, 3435 flow. Second operand 7 states and 158 transitions. [2024-05-12 13:06:51,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 335 transitions, 4352 flow [2024-05-12 13:06:52,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 335 transitions, 4267 flow, removed 26 selfloop flow, removed 3 redundant places. [2024-05-12 13:06:52,950 INFO L231 Difference]: Finished difference. Result has 231 places, 305 transitions, 3479 flow [2024-05-12 13:06:52,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3362, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3479, PETRI_PLACES=231, PETRI_TRANSITIONS=305} [2024-05-12 13:06:52,950 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 176 predicate places. [2024-05-12 13:06:52,951 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 305 transitions, 3479 flow [2024-05-12 13:06:52,951 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 13:06:52,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:06:52,951 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 13:06:52,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-05-12 13:06:52,951 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:06:52,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:06:52,952 INFO L85 PathProgramCache]: Analyzing trace with hash -772520999, now seen corresponding path program 1 times [2024-05-12 13:06:52,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:06:52,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104363025] [2024-05-12 13:06:52,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:06:52,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:06:52,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:06:53,685 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 13:06:53,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:06:53,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104363025] [2024-05-12 13:06:53,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104363025] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:06:53,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:06:53,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:06:53,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144705823] [2024-05-12 13:06:53,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:06:53,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:06:53,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:06:53,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:06:53,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:06:53,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2024-05-12 13:06:53,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 305 transitions, 3479 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 13:06:53,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:06:53,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2024-05-12 13:06:53,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:06:56,232 INFO L124 PetriNetUnfolderBase]: 9333/14646 cut-off events. [2024-05-12 13:06:56,232 INFO L125 PetriNetUnfolderBase]: For 574594/574594 co-relation queries the response was YES. [2024-05-12 13:06:56,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88816 conditions, 14646 events. 9333/14646 cut-off events. For 574594/574594 co-relation queries the response was YES. Maximal size of possible extension queue 607. Compared 98656 event pairs, 3046 based on Foata normal form. 3/14370 useless extension candidates. Maximal degree in co-relation 88709. Up to 13358 conditions per place. [2024-05-12 13:06:56,408 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 302 selfloop transitions, 37 changer transitions 0/347 dead transitions. [2024-05-12 13:06:56,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 347 transitions, 4476 flow [2024-05-12 13:06:56,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:06:56,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:06:56,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 164 transitions. [2024-05-12 13:06:56,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.478134110787172 [2024-05-12 13:06:56,410 INFO L175 Difference]: Start difference. First operand has 231 places, 305 transitions, 3479 flow. Second operand 7 states and 164 transitions. [2024-05-12 13:06:56,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 347 transitions, 4476 flow [2024-05-12 13:06:57,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 347 transitions, 4406 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-05-12 13:06:57,333 INFO L231 Difference]: Finished difference. Result has 234 places, 311 transitions, 3572 flow [2024-05-12 13:06:57,333 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3409, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3572, PETRI_PLACES=234, PETRI_TRANSITIONS=311} [2024-05-12 13:06:57,334 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 179 predicate places. [2024-05-12 13:06:57,334 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 311 transitions, 3572 flow [2024-05-12 13:06:57,334 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 13:06:57,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:06:57,334 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 13:06:57,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-05-12 13:06:57,334 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:06:57,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:06:57,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1749962927, now seen corresponding path program 2 times [2024-05-12 13:06:57,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:06:57,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136374439] [2024-05-12 13:06:57,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:06:57,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:06:57,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:06:58,073 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 13:06:58,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:06:58,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136374439] [2024-05-12 13:06:58,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136374439] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:06:58,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:06:58,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:06:58,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509893859] [2024-05-12 13:06:58,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:06:58,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:06:58,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:06:58,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:06:58,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:06:58,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2024-05-12 13:06:58,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 311 transitions, 3572 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 13:06:58,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:06:58,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2024-05-12 13:06:58,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:07:00,713 INFO L124 PetriNetUnfolderBase]: 9384/14726 cut-off events. [2024-05-12 13:07:00,714 INFO L125 PetriNetUnfolderBase]: For 594767/594773 co-relation queries the response was YES. [2024-05-12 13:07:00,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90374 conditions, 14726 events. 9384/14726 cut-off events. For 594767/594773 co-relation queries the response was YES. Maximal size of possible extension queue 614. Compared 99222 event pairs, 3013 based on Foata normal form. 7/14450 useless extension candidates. Maximal degree in co-relation 90266. Up to 13400 conditions per place. [2024-05-12 13:07:00,936 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 299 selfloop transitions, 40 changer transitions 0/347 dead transitions. [2024-05-12 13:07:00,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 347 transitions, 4531 flow [2024-05-12 13:07:00,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:07:00,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:07:00,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 161 transitions. [2024-05-12 13:07:00,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46938775510204084 [2024-05-12 13:07:00,937 INFO L175 Difference]: Start difference. First operand has 234 places, 311 transitions, 3572 flow. Second operand 7 states and 161 transitions. [2024-05-12 13:07:00,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 347 transitions, 4531 flow [2024-05-12 13:07:02,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 347 transitions, 4473 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-05-12 13:07:02,177 INFO L231 Difference]: Finished difference. Result has 238 places, 314 transitions, 3645 flow [2024-05-12 13:07:02,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3516, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3645, PETRI_PLACES=238, PETRI_TRANSITIONS=314} [2024-05-12 13:07:02,178 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 183 predicate places. [2024-05-12 13:07:02,178 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 314 transitions, 3645 flow [2024-05-12 13:07:02,178 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 13:07:02,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:07:02,178 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 13:07:02,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-05-12 13:07:02,179 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:07:02,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:07:02,179 INFO L85 PathProgramCache]: Analyzing trace with hash 719492020, now seen corresponding path program 3 times [2024-05-12 13:07:02,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:07:02,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485884150] [2024-05-12 13:07:02,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:07:02,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:07:02,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:07:02,835 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 13:07:02,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:07:02,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485884150] [2024-05-12 13:07:02,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485884150] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:07:02,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:07:02,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:07:02,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191862670] [2024-05-12 13:07:02,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:07:02,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:07:02,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:07:02,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:07:02,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:07:02,910 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2024-05-12 13:07:02,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 314 transitions, 3645 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 13:07:02,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:07:02,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2024-05-12 13:07:02,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:07:05,388 INFO L124 PetriNetUnfolderBase]: 9381/14808 cut-off events. [2024-05-12 13:07:05,388 INFO L125 PetriNetUnfolderBase]: For 605531/605537 co-relation queries the response was YES. [2024-05-12 13:07:05,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90691 conditions, 14808 events. 9381/14808 cut-off events. For 605531/605537 co-relation queries the response was YES. Maximal size of possible extension queue 613. Compared 100697 event pairs, 3035 based on Foata normal form. 2/14506 useless extension candidates. Maximal degree in co-relation 90581. Up to 13495 conditions per place. [2024-05-12 13:07:05,582 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 290 selfloop transitions, 41 changer transitions 0/339 dead transitions. [2024-05-12 13:07:05,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 339 transitions, 4394 flow [2024-05-12 13:07:05,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:07:05,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:07:05,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 154 transitions. [2024-05-12 13:07:05,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4489795918367347 [2024-05-12 13:07:05,583 INFO L175 Difference]: Start difference. First operand has 238 places, 314 transitions, 3645 flow. Second operand 7 states and 154 transitions. [2024-05-12 13:07:05,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 339 transitions, 4394 flow [2024-05-12 13:07:07,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 339 transitions, 4266 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-05-12 13:07:07,219 INFO L231 Difference]: Finished difference. Result has 240 places, 314 transitions, 3606 flow [2024-05-12 13:07:07,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3517, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3606, PETRI_PLACES=240, PETRI_TRANSITIONS=314} [2024-05-12 13:07:07,221 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 185 predicate places. [2024-05-12 13:07:07,221 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 314 transitions, 3606 flow [2024-05-12 13:07:07,222 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 13:07:07,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:07:07,222 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 13:07:07,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-05-12 13:07:07,222 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:07:07,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:07:07,222 INFO L85 PathProgramCache]: Analyzing trace with hash -565600649, now seen corresponding path program 3 times [2024-05-12 13:07:07,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:07:07,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513122496] [2024-05-12 13:07:07,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:07:07,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:07:07,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:07:07,966 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 13:07:07,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:07:07,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513122496] [2024-05-12 13:07:07,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513122496] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:07:07,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:07:07,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:07:07,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164985309] [2024-05-12 13:07:07,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:07:07,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:07:07,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:07:07,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:07:07,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:07:08,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2024-05-12 13:07:08,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 314 transitions, 3606 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 13:07:08,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:07:08,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2024-05-12 13:07:08,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:07:10,577 INFO L124 PetriNetUnfolderBase]: 9372/14710 cut-off events. [2024-05-12 13:07:10,577 INFO L125 PetriNetUnfolderBase]: For 616587/616593 co-relation queries the response was YES. [2024-05-12 13:07:10,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90214 conditions, 14710 events. 9372/14710 cut-off events. For 616587/616593 co-relation queries the response was YES. Maximal size of possible extension queue 614. Compared 99232 event pairs, 3013 based on Foata normal form. 7/14434 useless extension candidates. Maximal degree in co-relation 90103. Up to 13389 conditions per place. [2024-05-12 13:07:10,784 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 292 selfloop transitions, 42 changer transitions 0/342 dead transitions. [2024-05-12 13:07:10,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 342 transitions, 4366 flow [2024-05-12 13:07:10,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:07:10,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:07:10,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 157 transitions. [2024-05-12 13:07:10,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4577259475218659 [2024-05-12 13:07:10,785 INFO L175 Difference]: Start difference. First operand has 240 places, 314 transitions, 3606 flow. Second operand 7 states and 157 transitions. [2024-05-12 13:07:10,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 342 transitions, 4366 flow [2024-05-12 13:07:12,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 342 transitions, 4224 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-05-12 13:07:12,279 INFO L231 Difference]: Finished difference. Result has 239 places, 314 transitions, 3555 flow [2024-05-12 13:07:12,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3464, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3555, PETRI_PLACES=239, PETRI_TRANSITIONS=314} [2024-05-12 13:07:12,280 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 184 predicate places. [2024-05-12 13:07:12,280 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 314 transitions, 3555 flow [2024-05-12 13:07:12,280 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 13:07:12,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:07:12,280 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 13:07:12,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-05-12 13:07:12,281 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:07:12,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:07:12,281 INFO L85 PathProgramCache]: Analyzing trace with hash -796239587, now seen corresponding path program 1 times [2024-05-12 13:07:12,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:07:12,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225213983] [2024-05-12 13:07:12,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:07:12,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:07:12,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:07:13,315 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 13:07:13,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:07:13,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225213983] [2024-05-12 13:07:13,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225213983] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:07:13,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:07:13,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:07:13,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244721668] [2024-05-12 13:07:13,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:07:13,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:07:13,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:07:13,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:07:13,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:07:13,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2024-05-12 13:07:13,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 314 transitions, 3555 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 13:07:13,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:07:13,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2024-05-12 13:07:13,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:07:15,812 INFO L124 PetriNetUnfolderBase]: 9431/14724 cut-off events. [2024-05-12 13:07:15,813 INFO L125 PetriNetUnfolderBase]: For 630953/630959 co-relation queries the response was YES. [2024-05-12 13:07:15,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90976 conditions, 14724 events. 9431/14724 cut-off events. For 630953/630959 co-relation queries the response was YES. Maximal size of possible extension queue 595. Compared 98711 event pairs, 2720 based on Foata normal form. 6/14422 useless extension candidates. Maximal degree in co-relation 90865. Up to 13232 conditions per place. [2024-05-12 13:07:16,007 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 305 selfloop transitions, 63 changer transitions 0/376 dead transitions. [2024-05-12 13:07:16,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 376 transitions, 4845 flow [2024-05-12 13:07:16,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:07:16,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:07:16,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 218 transitions. [2024-05-12 13:07:16,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4943310657596372 [2024-05-12 13:07:16,008 INFO L175 Difference]: Start difference. First operand has 239 places, 314 transitions, 3555 flow. Second operand 9 states and 218 transitions. [2024-05-12 13:07:16,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 376 transitions, 4845 flow [2024-05-12 13:07:17,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 376 transitions, 4745 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-05-12 13:07:17,216 INFO L231 Difference]: Finished difference. Result has 242 places, 322 transitions, 3717 flow [2024-05-12 13:07:17,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3455, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3717, PETRI_PLACES=242, PETRI_TRANSITIONS=322} [2024-05-12 13:07:17,217 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 187 predicate places. [2024-05-12 13:07:17,217 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 322 transitions, 3717 flow [2024-05-12 13:07:17,217 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 13:07:17,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:07:17,217 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 13:07:17,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-05-12 13:07:17,217 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:07:17,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:07:17,218 INFO L85 PathProgramCache]: Analyzing trace with hash -277869107, now seen corresponding path program 1 times [2024-05-12 13:07:17,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:07:17,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107673779] [2024-05-12 13:07:17,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:07:17,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:07:17,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:07:17,991 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 13:07:17,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:07:17,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107673779] [2024-05-12 13:07:17,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107673779] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:07:17,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:07:17,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:07:17,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639867281] [2024-05-12 13:07:17,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:07:17,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:07:17,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:07:17,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:07:17,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:07:18,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2024-05-12 13:07:18,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 322 transitions, 3717 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 13:07:18,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:07:18,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2024-05-12 13:07:18,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:07:20,557 INFO L124 PetriNetUnfolderBase]: 9728/15184 cut-off events. [2024-05-12 13:07:20,557 INFO L125 PetriNetUnfolderBase]: For 682619/682625 co-relation queries the response was YES. [2024-05-12 13:07:20,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95760 conditions, 15184 events. 9728/15184 cut-off events. For 682619/682625 co-relation queries the response was YES. Maximal size of possible extension queue 624. Compared 102234 event pairs, 2782 based on Foata normal form. 10/14871 useless extension candidates. Maximal degree in co-relation 95648. Up to 13193 conditions per place. [2024-05-12 13:07:20,762 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 312 selfloop transitions, 71 changer transitions 0/391 dead transitions. [2024-05-12 13:07:20,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 391 transitions, 5135 flow [2024-05-12 13:07:20,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:07:20,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:07:20,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 200 transitions. [2024-05-12 13:07:20,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5102040816326531 [2024-05-12 13:07:20,764 INFO L175 Difference]: Start difference. First operand has 242 places, 322 transitions, 3717 flow. Second operand 8 states and 200 transitions. [2024-05-12 13:07:20,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 391 transitions, 5135 flow [2024-05-12 13:07:22,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 391 transitions, 4994 flow, removed 36 selfloop flow, removed 5 redundant places. [2024-05-12 13:07:22,426 INFO L231 Difference]: Finished difference. Result has 247 places, 342 transitions, 4050 flow [2024-05-12 13:07:22,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3576, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4050, PETRI_PLACES=247, PETRI_TRANSITIONS=342} [2024-05-12 13:07:22,426 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 192 predicate places. [2024-05-12 13:07:22,426 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 342 transitions, 4050 flow [2024-05-12 13:07:22,427 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 13:07:22,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:07:22,427 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 13:07:22,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-05-12 13:07:22,427 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:07:22,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:07:22,427 INFO L85 PathProgramCache]: Analyzing trace with hash 648021043, now seen corresponding path program 1 times [2024-05-12 13:07:22,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:07:22,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439600934] [2024-05-12 13:07:22,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:07:22,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:07:22,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:07:23,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:07:23,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:07:23,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439600934] [2024-05-12 13:07:23,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439600934] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:07:23,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:07:23,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:07:23,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544185528] [2024-05-12 13:07:23,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:07:23,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:07:23,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:07:23,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:07:23,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:07:23,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2024-05-12 13:07:23,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 342 transitions, 4050 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 13:07:23,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:07:23,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2024-05-12 13:07:23,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:07:25,737 INFO L124 PetriNetUnfolderBase]: 9802/15267 cut-off events. [2024-05-12 13:07:25,737 INFO L125 PetriNetUnfolderBase]: For 711890/711896 co-relation queries the response was YES. [2024-05-12 13:07:25,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99969 conditions, 15267 events. 9802/15267 cut-off events. For 711890/711896 co-relation queries the response was YES. Maximal size of possible extension queue 628. Compared 102691 event pairs, 2776 based on Foata normal form. 6/14947 useless extension candidates. Maximal degree in co-relation 99853. Up to 13804 conditions per place. [2024-05-12 13:07:26,000 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 321 selfloop transitions, 58 changer transitions 0/387 dead transitions. [2024-05-12 13:07:26,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 387 transitions, 5329 flow [2024-05-12 13:07:26,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:07:26,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:07:26,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2024-05-12 13:07:26,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4897959183673469 [2024-05-12 13:07:26,002 INFO L175 Difference]: Start difference. First operand has 247 places, 342 transitions, 4050 flow. Second operand 7 states and 168 transitions. [2024-05-12 13:07:26,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 387 transitions, 5329 flow [2024-05-12 13:07:27,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 387 transitions, 5250 flow, removed 36 selfloop flow, removed 2 redundant places. [2024-05-12 13:07:27,944 INFO L231 Difference]: Finished difference. Result has 253 places, 352 transitions, 4262 flow [2024-05-12 13:07:27,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3971, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4262, PETRI_PLACES=253, PETRI_TRANSITIONS=352} [2024-05-12 13:07:27,944 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 198 predicate places. [2024-05-12 13:07:27,945 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 352 transitions, 4262 flow [2024-05-12 13:07:27,945 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 13:07:27,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:07:27,945 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 13:07:27,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-05-12 13:07:27,945 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:07:27,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:07:27,946 INFO L85 PathProgramCache]: Analyzing trace with hash 654687283, now seen corresponding path program 2 times [2024-05-12 13:07:27,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:07:27,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642064067] [2024-05-12 13:07:27,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:07:27,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:07:27,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:07:28,656 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 13:07:28,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:07:28,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642064067] [2024-05-12 13:07:28,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642064067] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:07:28,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:07:28,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:07:28,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509848292] [2024-05-12 13:07:28,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:07:28,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:07:28,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:07:28,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:07:28,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:07:28,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2024-05-12 13:07:28,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 352 transitions, 4262 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 13:07:28,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:07:28,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2024-05-12 13:07:28,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:07:31,793 INFO L124 PetriNetUnfolderBase]: 9796/15251 cut-off events. [2024-05-12 13:07:31,793 INFO L125 PetriNetUnfolderBase]: For 718543/718549 co-relation queries the response was YES. [2024-05-12 13:07:31,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99697 conditions, 15251 events. 9796/15251 cut-off events. For 718543/718549 co-relation queries the response was YES. Maximal size of possible extension queue 626. Compared 102489 event pairs, 2785 based on Foata normal form. 6/14934 useless extension candidates. Maximal degree in co-relation 99577. Up to 13799 conditions per place. [2024-05-12 13:07:31,976 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 322 selfloop transitions, 54 changer transitions 0/384 dead transitions. [2024-05-12 13:07:31,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 384 transitions, 5386 flow [2024-05-12 13:07:31,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:07:31,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:07:31,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 165 transitions. [2024-05-12 13:07:31,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48104956268221577 [2024-05-12 13:07:31,977 INFO L175 Difference]: Start difference. First operand has 253 places, 352 transitions, 4262 flow. Second operand 7 states and 165 transitions. [2024-05-12 13:07:31,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 384 transitions, 5386 flow [2024-05-12 13:07:34,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 384 transitions, 5302 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-05-12 13:07:34,028 INFO L231 Difference]: Finished difference. Result has 257 places, 352 transitions, 4295 flow [2024-05-12 13:07:34,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=4178, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4295, PETRI_PLACES=257, PETRI_TRANSITIONS=352} [2024-05-12 13:07:34,029 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 202 predicate places. [2024-05-12 13:07:34,029 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 352 transitions, 4295 flow [2024-05-12 13:07:34,029 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 13:07:34,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:07:34,029 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 13:07:34,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-05-12 13:07:34,030 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:07:34,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:07:34,030 INFO L85 PathProgramCache]: Analyzing trace with hash 716242763, now seen corresponding path program 1 times [2024-05-12 13:07:34,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:07:34,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647981463] [2024-05-12 13:07:34,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:07:34,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:07:34,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:07:35,446 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 13:07:35,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:07:35,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647981463] [2024-05-12 13:07:35,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647981463] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:07:35,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:07:35,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:07:35,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302431601] [2024-05-12 13:07:35,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:07:35,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:07:35,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:07:35,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:07:35,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:07:35,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-05-12 13:07:35,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 352 transitions, 4295 flow. Second operand has 12 states, 12 states have (on average 13.333333333333334) internal successors, (160), 12 states have internal predecessors, (160), 0 states have call successors, (0), 0 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 13:07:35,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:07:35,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-05-12 13:07:35,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:07:38,861 INFO L124 PetriNetUnfolderBase]: 9511/14886 cut-off events. [2024-05-12 13:07:38,861 INFO L125 PetriNetUnfolderBase]: For 748919/748976 co-relation queries the response was YES. [2024-05-12 13:07:39,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99138 conditions, 14886 events. 9511/14886 cut-off events. For 748919/748976 co-relation queries the response was YES. Maximal size of possible extension queue 625. Compared 100504 event pairs, 2240 based on Foata normal form. 8/14548 useless extension candidates. Maximal degree in co-relation 99017. Up to 12703 conditions per place. [2024-05-12 13:07:39,360 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 351 selfloop transitions, 65 changer transitions 0/446 dead transitions. [2024-05-12 13:07:39,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 446 transitions, 5621 flow [2024-05-12 13:07:39,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-05-12 13:07:39,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-05-12 13:07:39,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 297 transitions. [2024-05-12 13:07:39,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5051020408163265 [2024-05-12 13:07:39,362 INFO L175 Difference]: Start difference. First operand has 257 places, 352 transitions, 4295 flow. Second operand 12 states and 297 transitions. [2024-05-12 13:07:39,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 446 transitions, 5621 flow [2024-05-12 13:07:41,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 446 transitions, 5526 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-05-12 13:07:41,592 INFO L231 Difference]: Finished difference. Result has 268 places, 364 transitions, 4532 flow [2024-05-12 13:07:41,592 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=4200, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4532, PETRI_PLACES=268, PETRI_TRANSITIONS=364} [2024-05-12 13:07:41,592 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 213 predicate places. [2024-05-12 13:07:41,593 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 364 transitions, 4532 flow [2024-05-12 13:07:41,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.333333333333334) internal successors, (160), 12 states have internal predecessors, (160), 0 states have call successors, (0), 0 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 13:07:41,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:07:41,593 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 13:07:41,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-05-12 13:07:41,593 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:07:41,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:07:41,594 INFO L85 PathProgramCache]: Analyzing trace with hash -267680027, now seen corresponding path program 2 times [2024-05-12 13:07:41,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:07:41,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828798431] [2024-05-12 13:07:41,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:07:41,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:07:41,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:07:42,553 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 13:07:42,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:07:42,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828798431] [2024-05-12 13:07:42,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828798431] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:07:42,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:07:42,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:07:42,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962176826] [2024-05-12 13:07:42,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:07:42,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:07:42,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:07:42,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:07:42,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:07:42,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2024-05-12 13:07:42,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 364 transitions, 4532 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 13:07:42,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:07:42,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2024-05-12 13:07:42,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:07:45,964 INFO L124 PetriNetUnfolderBase]: 10181/15783 cut-off events. [2024-05-12 13:07:45,964 INFO L125 PetriNetUnfolderBase]: For 803489/803495 co-relation queries the response was YES. [2024-05-12 13:07:46,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106665 conditions, 15783 events. 10181/15783 cut-off events. For 803489/803495 co-relation queries the response was YES. Maximal size of possible extension queue 645. Compared 105959 event pairs, 2684 based on Foata normal form. 10/15475 useless extension candidates. Maximal degree in co-relation 106540. Up to 13504 conditions per place. [2024-05-12 13:07:46,170 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 334 selfloop transitions, 78 changer transitions 0/420 dead transitions. [2024-05-12 13:07:46,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 420 transitions, 6098 flow [2024-05-12 13:07:46,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:07:46,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:07:46,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-05-12 13:07:46,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49744897959183676 [2024-05-12 13:07:46,172 INFO L175 Difference]: Start difference. First operand has 268 places, 364 transitions, 4532 flow. Second operand 8 states and 195 transitions. [2024-05-12 13:07:46,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 420 transitions, 6098 flow [2024-05-12 13:07:47,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 420 transitions, 5936 flow, removed 47 selfloop flow, removed 6 redundant places. [2024-05-12 13:07:47,761 INFO L231 Difference]: Finished difference. Result has 271 places, 375 transitions, 4714 flow [2024-05-12 13:07:47,761 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=4370, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4714, PETRI_PLACES=271, PETRI_TRANSITIONS=375} [2024-05-12 13:07:47,762 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 216 predicate places. [2024-05-12 13:07:47,762 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 375 transitions, 4714 flow [2024-05-12 13:07:47,762 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 13:07:47,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:07:47,762 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 13:07:47,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-05-12 13:07:47,762 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:07:47,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:07:47,763 INFO L85 PathProgramCache]: Analyzing trace with hash -267692489, now seen corresponding path program 2 times [2024-05-12 13:07:47,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:07:47,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007064117] [2024-05-12 13:07:47,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:07:47,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:07:47,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:07:48,880 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 13:07:48,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:07:48,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007064117] [2024-05-12 13:07:48,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007064117] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:07:48,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:07:48,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:07:48,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333241593] [2024-05-12 13:07:48,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:07:48,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:07:48,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:07:48,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:07:48,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:07:48,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2024-05-12 13:07:48,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 375 transitions, 4714 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 13:07:48,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:07:48,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2024-05-12 13:07:48,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:07:52,331 INFO L124 PetriNetUnfolderBase]: 10217/15879 cut-off events. [2024-05-12 13:07:52,332 INFO L125 PetriNetUnfolderBase]: For 816865/816871 co-relation queries the response was YES. [2024-05-12 13:07:52,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107754 conditions, 15879 events. 10217/15879 cut-off events. For 816865/816871 co-relation queries the response was YES. Maximal size of possible extension queue 650. Compared 107182 event pairs, 2711 based on Foata normal form. 6/15545 useless extension candidates. Maximal degree in co-relation 107626. Up to 14351 conditions per place. [2024-05-12 13:07:52,555 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 349 selfloop transitions, 59 changer transitions 0/416 dead transitions. [2024-05-12 13:07:52,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 416 transitions, 5988 flow [2024-05-12 13:07:52,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:07:52,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:07:52,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 185 transitions. [2024-05-12 13:07:52,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4719387755102041 [2024-05-12 13:07:52,558 INFO L175 Difference]: Start difference. First operand has 271 places, 375 transitions, 4714 flow. Second operand 8 states and 185 transitions. [2024-05-12 13:07:52,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 416 transitions, 5988 flow [2024-05-12 13:07:54,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 416 transitions, 5826 flow, removed 31 selfloop flow, removed 4 redundant places. [2024-05-12 13:07:54,623 INFO L231 Difference]: Finished difference. Result has 275 places, 379 transitions, 4733 flow [2024-05-12 13:07:54,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=4552, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4733, PETRI_PLACES=275, PETRI_TRANSITIONS=379} [2024-05-12 13:07:54,624 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 220 predicate places. [2024-05-12 13:07:54,624 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 379 transitions, 4733 flow [2024-05-12 13:07:54,624 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 13:07:54,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:07:54,624 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 13:07:54,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-05-12 13:07:54,625 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:07:54,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:07:54,625 INFO L85 PathProgramCache]: Analyzing trace with hash 654683687, now seen corresponding path program 3 times [2024-05-12 13:07:54,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:07:54,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502030506] [2024-05-12 13:07:54,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:07:54,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:07:54,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:07:55,539 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 13:07:55,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:07:55,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502030506] [2024-05-12 13:07:55,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502030506] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:07:55,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:07:55,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:07:55,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659439453] [2024-05-12 13:07:55,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:07:55,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:07:55,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:07:55,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:07:55,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:07:55,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2024-05-12 13:07:55,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 379 transitions, 4733 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 13:07:55,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:07:55,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2024-05-12 13:07:55,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:07:59,014 INFO L124 PetriNetUnfolderBase]: 10205/15823 cut-off events. [2024-05-12 13:07:59,014 INFO L125 PetriNetUnfolderBase]: For 826078/826084 co-relation queries the response was YES. [2024-05-12 13:07:59,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106467 conditions, 15823 events. 10205/15823 cut-off events. For 826078/826084 co-relation queries the response was YES. Maximal size of possible extension queue 647. Compared 106256 event pairs, 2696 based on Foata normal form. 10/15513 useless extension candidates. Maximal degree in co-relation 106338. Up to 13549 conditions per place. [2024-05-12 13:07:59,272 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 338 selfloop transitions, 79 changer transitions 0/425 dead transitions. [2024-05-12 13:07:59,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 425 transitions, 6038 flow [2024-05-12 13:07:59,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:07:59,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:07:59,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-05-12 13:07:59,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5025510204081632 [2024-05-12 13:07:59,273 INFO L175 Difference]: Start difference. First operand has 275 places, 379 transitions, 4733 flow. Second operand 8 states and 197 transitions. [2024-05-12 13:07:59,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 425 transitions, 6038 flow [2024-05-12 13:08:01,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 425 transitions, 5914 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-05-12 13:08:01,462 INFO L231 Difference]: Finished difference. Result has 278 places, 380 transitions, 4801 flow [2024-05-12 13:08:01,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=4609, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4801, PETRI_PLACES=278, PETRI_TRANSITIONS=380} [2024-05-12 13:08:01,471 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 223 predicate places. [2024-05-12 13:08:01,471 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 380 transitions, 4801 flow [2024-05-12 13:08:01,471 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 13:08:01,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:08:01,471 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 13:08:01,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-05-12 13:08:01,472 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:08:01,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:08:01,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1349216597, now seen corresponding path program 3 times [2024-05-12 13:08:01,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:08:01,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104431698] [2024-05-12 13:08:01,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:08:01,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:08:01,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:08:02,239 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 13:08:02,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:08:02,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104431698] [2024-05-12 13:08:02,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104431698] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:08:02,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:08:02,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:08:02,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857267820] [2024-05-12 13:08:02,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:08:02,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:08:02,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:08:02,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:08:02,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:08:02,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2024-05-12 13:08:02,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 380 transitions, 4801 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 13:08:02,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:08:02,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2024-05-12 13:08:02,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:08:05,671 INFO L124 PetriNetUnfolderBase]: 10192/15705 cut-off events. [2024-05-12 13:08:05,671 INFO L125 PetriNetUnfolderBase]: For 832881/832881 co-relation queries the response was YES. [2024-05-12 13:08:05,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106925 conditions, 15705 events. 10192/15705 cut-off events. For 832881/832881 co-relation queries the response was YES. Maximal size of possible extension queue 664. Compared 104766 event pairs, 3154 based on Foata normal form. 1/15453 useless extension candidates. Maximal degree in co-relation 106795. Up to 14626 conditions per place. [2024-05-12 13:08:05,898 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 373 selfloop transitions, 28 changer transitions 0/409 dead transitions. [2024-05-12 13:08:05,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 409 transitions, 5837 flow [2024-05-12 13:08:05,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:08:05,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:08:05,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 158 transitions. [2024-05-12 13:08:05,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4606413994169096 [2024-05-12 13:08:05,900 INFO L175 Difference]: Start difference. First operand has 278 places, 380 transitions, 4801 flow. Second operand 7 states and 158 transitions. [2024-05-12 13:08:05,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 409 transitions, 5837 flow [2024-05-12 13:08:08,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 409 transitions, 5659 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-05-12 13:08:08,377 INFO L231 Difference]: Finished difference. Result has 280 places, 380 transitions, 4685 flow [2024-05-12 13:08:08,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=4623, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4685, PETRI_PLACES=280, PETRI_TRANSITIONS=380} [2024-05-12 13:08:08,378 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 225 predicate places. [2024-05-12 13:08:08,378 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 380 transitions, 4685 flow [2024-05-12 13:08:08,378 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 13:08:08,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:08:08,378 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 13:08:08,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-05-12 13:08:08,378 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:08:08,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:08:08,379 INFO L85 PathProgramCache]: Analyzing trace with hash 656918113, now seen corresponding path program 4 times [2024-05-12 13:08:08,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:08:08,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006646382] [2024-05-12 13:08:08,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:08:08,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:08:08,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:08:09,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:08:09,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:08:09,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006646382] [2024-05-12 13:08:09,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006646382] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:08:09,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:08:09,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:08:09,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660030756] [2024-05-12 13:08:09,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:08:09,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:08:09,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:08:09,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:08:09,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:08:09,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2024-05-12 13:08:09,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 380 transitions, 4685 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 13:08:09,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:08:09,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2024-05-12 13:08:09,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:08:12,561 INFO L124 PetriNetUnfolderBase]: 10209/15748 cut-off events. [2024-05-12 13:08:12,562 INFO L125 PetriNetUnfolderBase]: For 850452/850452 co-relation queries the response was YES. [2024-05-12 13:08:12,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106337 conditions, 15748 events. 10209/15748 cut-off events. For 850452/850452 co-relation queries the response was YES. Maximal size of possible extension queue 665. Compared 105286 event pairs, 3143 based on Foata normal form. 1/15491 useless extension candidates. Maximal degree in co-relation 106206. Up to 14680 conditions per place. [2024-05-12 13:08:12,775 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 375 selfloop transitions, 24 changer transitions 0/407 dead transitions. [2024-05-12 13:08:12,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 407 transitions, 5620 flow [2024-05-12 13:08:12,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:08:12,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:08:12,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 152 transitions. [2024-05-12 13:08:12,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44314868804664725 [2024-05-12 13:08:12,776 INFO L175 Difference]: Start difference. First operand has 280 places, 380 transitions, 4685 flow. Second operand 7 states and 152 transitions. [2024-05-12 13:08:12,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 407 transitions, 5620 flow [2024-05-12 13:08:14,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 407 transitions, 5400 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-05-12 13:08:14,682 INFO L231 Difference]: Finished difference. Result has 278 places, 384 transitions, 4594 flow [2024-05-12 13:08:14,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=4482, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4594, PETRI_PLACES=278, PETRI_TRANSITIONS=384} [2024-05-12 13:08:14,683 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 223 predicate places. [2024-05-12 13:08:14,683 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 384 transitions, 4594 flow [2024-05-12 13:08:14,683 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 13:08:14,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:08:14,683 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 13:08:14,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-05-12 13:08:14,684 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:08:14,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:08:14,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1413689025, now seen corresponding path program 5 times [2024-05-12 13:08:14,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:08:14,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601746459] [2024-05-12 13:08:14,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:08:14,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:08:14,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:08:15,477 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 13:08:15,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:08:15,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601746459] [2024-05-12 13:08:15,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601746459] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:08:15,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:08:15,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:08:15,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583106681] [2024-05-12 13:08:15,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:08:15,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:08:15,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:08:15,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:08:15,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:08:15,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2024-05-12 13:08:15,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 384 transitions, 4594 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 13:08:15,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:08:15,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2024-05-12 13:08:15,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:08:18,659 INFO L124 PetriNetUnfolderBase]: 10206/15725 cut-off events. [2024-05-12 13:08:18,659 INFO L125 PetriNetUnfolderBase]: For 862488/862494 co-relation queries the response was YES. [2024-05-12 13:08:18,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105982 conditions, 15725 events. 10206/15725 cut-off events. For 862488/862494 co-relation queries the response was YES. Maximal size of possible extension queue 665. Compared 104862 event pairs, 3154 based on Foata normal form. 5/15476 useless extension candidates. Maximal degree in co-relation 105851. Up to 14676 conditions per place. [2024-05-12 13:08:18,911 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 372 selfloop transitions, 24 changer transitions 0/404 dead transitions. [2024-05-12 13:08:18,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 404 transitions, 5446 flow [2024-05-12 13:08:18,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:08:18,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:08:18,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 149 transitions. [2024-05-12 13:08:18,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43440233236151604 [2024-05-12 13:08:18,913 INFO L175 Difference]: Start difference. First operand has 278 places, 384 transitions, 4594 flow. Second operand 7 states and 149 transitions. [2024-05-12 13:08:18,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 404 transitions, 5446 flow