./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi009_power.opt_pso.oepc_pso.opt_rmo.opt_tso.oepc_tso.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-05-07_14-17-48.files/protection/rfi009_power.opt_pso.oepc_pso.opt_rmo.opt_tso.oepc_tso.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b44c8288 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/rfi009_power.opt_pso.oepc_pso.opt_rmo.opt_tso.oepc_tso.opt.i ./goblint.2024-05-07_14-17-48.files/protection/rfi009_power.opt_pso.oepc_pso.opt_rmo.opt_tso.oepc_tso.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-wip.fs.witness-ghost-b44c828-m [2024-05-12 13:31:06,221 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-05-12 13:31:06,265 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-05-12 13:31:06,271 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-05-12 13:31:06,273 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-05-12 13:31:06,290 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-05-12 13:31:06,290 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-05-12 13:31:06,291 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-05-12 13:31:06,291 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-05-12 13:31:06,291 INFO L153 SettingsManager]: * Use memory slicer=true [2024-05-12 13:31:06,292 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-05-12 13:31:06,292 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-05-12 13:31:06,292 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-05-12 13:31:06,293 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-05-12 13:31:06,293 INFO L153 SettingsManager]: * Use SBE=true [2024-05-12 13:31:06,293 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-05-12 13:31:06,294 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-05-12 13:31:06,294 INFO L153 SettingsManager]: * sizeof long=4 [2024-05-12 13:31:06,294 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-05-12 13:31:06,294 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-05-12 13:31:06,295 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-05-12 13:31:06,295 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-05-12 13:31:06,295 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-05-12 13:31:06,296 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-05-12 13:31:06,296 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-05-12 13:31:06,296 INFO L153 SettingsManager]: * sizeof long double=12 [2024-05-12 13:31:06,297 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-05-12 13:31:06,297 INFO L153 SettingsManager]: * Use constant arrays=true [2024-05-12 13:31:06,297 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-05-12 13:31:06,297 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-05-12 13:31:06,298 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-05-12 13:31:06,298 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-05-12 13:31:06,298 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 13:31:06,299 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-05-12 13:31:06,299 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-05-12 13:31:06,299 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-05-12 13:31:06,299 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-05-12 13:31:06,300 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-05-12 13:31:06,300 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-05-12 13:31:06,300 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-05-12 13:31:06,300 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-05-12 13:31:06,301 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-05-12 13:31:06,301 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-05-12 13:31:06,301 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-05-12 13:31:06,534 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-05-12 13:31:06,559 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-05-12 13:31:06,561 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-05-12 13:31:06,562 INFO L270 PluginConnector]: Initializing CDTParser... [2024-05-12 13:31:06,562 INFO L274 PluginConnector]: CDTParser initialized [2024-05-12 13:31:06,563 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi009_power.opt_pso.oepc_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-05-12 13:31:07,730 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-05-12 13:31:07,931 INFO L384 CDTParser]: Found 1 translation units. [2024-05-12 13:31:07,931 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi009_power.opt_pso.oepc_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-05-12 13:31:07,949 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3be343c1/4d08997ad8cf4b34aa94d66e126c700b/FLAGbd6942e9d [2024-05-12 13:31:07,959 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3be343c1/4d08997ad8cf4b34aa94d66e126c700b [2024-05-12 13:31:07,961 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-05-12 13:31:07,962 INFO L274 PluginConnector]: Witness Parser initialized [2024-05-12 13:31:07,963 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-07_14-17-48.files/protection/rfi009_power.opt_pso.oepc_pso.opt_rmo.opt_tso.oepc_tso.opt.yml/witness.yml [2024-05-12 13:31:08,090 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-05-12 13:31:08,091 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-05-12 13:31:08,092 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-05-12 13:31:08,092 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-05-12 13:31:08,096 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-05-12 13:31:08,096 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 01:31:07" (1/2) ... [2024-05-12 13:31:08,097 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a8db16a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:31:08, skipping insertion in model container [2024-05-12 13:31:08,097 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 01:31:07" (1/2) ... [2024-05-12 13:31:08,098 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@21fd033b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:31:08, skipping insertion in model container [2024-05-12 13:31:08,098 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:31:08" (2/2) ... [2024-05-12 13:31:08,098 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a8db16a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:31:08, skipping insertion in model container [2024-05-12 13:31:08,099 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:31:08" (2/2) ... [2024-05-12 13:31:08,099 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-05-12 13:31:08,167 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-05-12 13:31:08,168 INFO L97 edCorrectnessWitness]: Location invariant before [L850-L850] ((((((((((((((((((! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EBX && __unbuffered_p0_EBX <= 1) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((0 <= y$w_buff1 && y$w_buff1 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || ((0 <= y$mem_tmp && y$mem_tmp <= 1) && (y$mem_tmp == 0 || y$mem_tmp == 1))) [2024-05-12 13:31:08,168 INFO L97 edCorrectnessWitness]: Location invariant before [L847-L847] ((((((((((((((((((! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EBX && __unbuffered_p0_EBX <= 1) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((0 <= y$w_buff1 && y$w_buff1 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || ((0 <= y$mem_tmp && y$mem_tmp <= 1) && (y$mem_tmp == 0 || y$mem_tmp == 1))) [2024-05-12 13:31:08,168 INFO L97 edCorrectnessWitness]: Location invariant before [L849-L849] ((((((((((((((((((! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EBX && __unbuffered_p0_EBX <= 1) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((0 <= y$w_buff1 && y$w_buff1 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || ((0 <= y$mem_tmp && y$mem_tmp <= 1) && (y$mem_tmp == 0 || y$mem_tmp == 1))) [2024-05-12 13:31:08,168 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-05-12 13:31:08,169 INFO L106 edCorrectnessWitness]: ghost_update [L845-L845] multithreaded = 1; [2024-05-12 13:31:08,201 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-05-12 13:31:08,404 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/rfi009_power.opt_pso.oepc_pso.opt_rmo.opt_tso.oepc_tso.opt.i[1035,1048] [2024-05-12 13:31:08,562 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 13:31:08,573 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-05-12 13:31:08,608 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/rfi009_power.opt_pso.oepc_pso.opt_rmo.opt_tso.oepc_tso.opt.i[1035,1048] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-05-12 13:31:08,697 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 13:31:08,754 INFO L206 MainTranslator]: Completed translation [2024-05-12 13:31:08,754 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:31:08 WrapperNode [2024-05-12 13:31:08,754 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-05-12 13:31:08,756 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-05-12 13:31:08,757 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-05-12 13:31:08,757 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-05-12 13:31:08,762 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:31:08" (1/1) ... [2024-05-12 13:31:08,778 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:31:08" (1/1) ... [2024-05-12 13:31:08,819 INFO L138 Inliner]: procedures = 176, calls = 54, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 154 [2024-05-12 13:31:08,819 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-05-12 13:31:08,820 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-05-12 13:31:08,820 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-05-12 13:31:08,820 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-05-12 13:31:08,828 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:31:08" (1/1) ... [2024-05-12 13:31:08,828 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:31:08" (1/1) ... [2024-05-12 13:31:08,832 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:31:08" (1/1) ... [2024-05-12 13:31:08,846 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 13:31:08,846 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:31:08" (1/1) ... [2024-05-12 13:31:08,847 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:31:08" (1/1) ... [2024-05-12 13:31:08,867 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:31:08" (1/1) ... [2024-05-12 13:31:08,874 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:31:08" (1/1) ... [2024-05-12 13:31:08,877 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:31:08" (1/1) ... [2024-05-12 13:31:08,878 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:31:08" (1/1) ... [2024-05-12 13:31:08,893 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-05-12 13:31:08,894 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-05-12 13:31:08,894 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-05-12 13:31:08,894 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-05-12 13:31:08,894 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:31:08" (1/1) ... [2024-05-12 13:31:08,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 13:31:08,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 13:31:08,973 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 13:31:09,001 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 13:31:09,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-05-12 13:31:09,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-05-12 13:31:09,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-05-12 13:31:09,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-05-12 13:31:09,030 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-05-12 13:31:09,030 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-05-12 13:31:09,030 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-05-12 13:31:09,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-05-12 13:31:09,030 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-05-12 13:31:09,030 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-05-12 13:31:09,030 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-05-12 13:31:09,030 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-05-12 13:31:09,031 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-05-12 13:31:09,031 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-05-12 13:31:09,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-05-12 13:31:09,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-05-12 13:31:09,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-05-12 13:31:09,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-05-12 13:31:09,031 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-05-12 13:31:09,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-05-12 13:31:09,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-05-12 13:31:09,033 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 13:31:09,144 INFO L244 CfgBuilder]: Building ICFG [2024-05-12 13:31:09,146 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-05-12 13:31:09,493 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-05-12 13:31:09,494 INFO L293 CfgBuilder]: Performing block encoding [2024-05-12 13:31:09,630 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-05-12 13:31:09,631 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-05-12 13:31:09,632 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 01:31:09 BoogieIcfgContainer [2024-05-12 13:31:09,633 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-05-12 13:31:09,636 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-05-12 13:31:09,636 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-05-12 13:31:09,638 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-05-12 13:31:09,638 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.05 01:31:07" (1/4) ... [2024-05-12 13:31:09,639 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f45eb33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 01:31:09, skipping insertion in model container [2024-05-12 13:31:09,639 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:31:08" (2/4) ... [2024-05-12 13:31:09,640 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f45eb33 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 01:31:09, skipping insertion in model container [2024-05-12 13:31:09,640 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:31:08" (3/4) ... [2024-05-12 13:31:09,640 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f45eb33 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 01:31:09, skipping insertion in model container [2024-05-12 13:31:09,640 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 01:31:09" (4/4) ... [2024-05-12 13:31:09,642 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi009_power.opt_pso.oepc_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-05-12 13:31:09,657 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-05-12 13:31:09,658 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-05-12 13:31:09,658 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-05-12 13:31:09,702 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-05-12 13:31:09,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 47 transitions, 106 flow [2024-05-12 13:31:09,786 INFO L124 PetriNetUnfolderBase]: 1/44 cut-off events. [2024-05-12 13:31:09,786 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 13:31:09,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 44 events. 1/44 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 72 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2024-05-12 13:31:09,789 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 47 transitions, 106 flow [2024-05-12 13:31:09,793 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 44 transitions, 97 flow [2024-05-12 13:31:09,805 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-05-12 13:31:09,811 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;@1a57656c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-12 13:31:09,812 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-05-12 13:31:09,816 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-05-12 13:31:09,816 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-05-12 13:31:09,817 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 13:31:09,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:09,817 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-05-12 13:31:09,818 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:31:09,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:09,824 INFO L85 PathProgramCache]: Analyzing trace with hash -908761938, now seen corresponding path program 1 times [2024-05-12 13:31:09,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:09,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940436432] [2024-05-12 13:31:09,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:09,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:09,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:10,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:31:10,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:10,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940436432] [2024-05-12 13:31:10,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940436432] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:10,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:10,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 13:31:10,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128936415] [2024-05-12 13:31:10,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:10,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 13:31:10,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:10,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 13:31:10,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 13:31:10,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-05-12 13:31:10,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 97 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 13:31:10,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:10,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-05-12 13:31:10,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:11,349 INFO L124 PetriNetUnfolderBase]: 2396/4098 cut-off events. [2024-05-12 13:31:11,349 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2024-05-12 13:31:11,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7670 conditions, 4098 events. 2396/4098 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 26856 event pairs, 1510 based on Foata normal form. 142/3909 useless extension candidates. Maximal degree in co-relation 7655. Up to 3464 conditions per place. [2024-05-12 13:31:11,375 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 42 selfloop transitions, 5 changer transitions 0/59 dead transitions. [2024-05-12 13:31:11,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 59 transitions, 227 flow [2024-05-12 13:31:11,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 13:31:11,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 13:31:11,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 97 transitions. [2024-05-12 13:31:11,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6879432624113475 [2024-05-12 13:31:11,389 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 97 flow. Second operand 3 states and 97 transitions. [2024-05-12 13:31:11,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 59 transitions, 227 flow [2024-05-12 13:31:11,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 59 transitions, 222 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-05-12 13:31:11,397 INFO L231 Difference]: Finished difference. Result has 53 places, 47 transitions, 129 flow [2024-05-12 13:31:11,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=129, PETRI_PLACES=53, PETRI_TRANSITIONS=47} [2024-05-12 13:31:11,401 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 0 predicate places. [2024-05-12 13:31:11,402 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 47 transitions, 129 flow [2024-05-12 13:31:11,402 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 13:31:11,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:11,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:11,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-05-12 13:31:11,403 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:31:11,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:11,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1747597882, now seen corresponding path program 1 times [2024-05-12 13:31:11,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:11,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559851091] [2024-05-12 13:31:11,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:11,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:11,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:11,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:31:11,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:11,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559851091] [2024-05-12 13:31:11,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559851091] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:11,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:11,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 13:31:11,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204146496] [2024-05-12 13:31:11,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:11,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 13:31:11,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:11,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 13:31:11,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 13:31:11,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 47 [2024-05-12 13:31:11,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 47 transitions, 129 flow. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:11,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:11,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 47 [2024-05-12 13:31:11,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:11,739 INFO L124 PetriNetUnfolderBase]: 891/1752 cut-off events. [2024-05-12 13:31:11,739 INFO L125 PetriNetUnfolderBase]: For 124/124 co-relation queries the response was YES. [2024-05-12 13:31:11,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3389 conditions, 1752 events. 891/1752 cut-off events. For 124/124 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 11764 event pairs, 206 based on Foata normal form. 0/1668 useless extension candidates. Maximal degree in co-relation 3374. Up to 1170 conditions per place. [2024-05-12 13:31:11,748 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 33 selfloop transitions, 3 changer transitions 0/57 dead transitions. [2024-05-12 13:31:11,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 57 transitions, 218 flow [2024-05-12 13:31:11,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 13:31:11,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 13:31:11,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2024-05-12 13:31:11,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.723404255319149 [2024-05-12 13:31:11,753 INFO L175 Difference]: Start difference. First operand has 53 places, 47 transitions, 129 flow. Second operand 3 states and 102 transitions. [2024-05-12 13:31:11,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 57 transitions, 218 flow [2024-05-12 13:31:11,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 57 transitions, 214 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 13:31:11,755 INFO L231 Difference]: Finished difference. Result has 53 places, 45 transitions, 122 flow [2024-05-12 13:31:11,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=53, PETRI_TRANSITIONS=45} [2024-05-12 13:31:11,759 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 0 predicate places. [2024-05-12 13:31:11,759 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 45 transitions, 122 flow [2024-05-12 13:31:11,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:11,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:11,760 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:11,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-05-12 13:31:11,760 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:31:11,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:11,761 INFO L85 PathProgramCache]: Analyzing trace with hash -646592006, now seen corresponding path program 1 times [2024-05-12 13:31:11,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:11,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516741589] [2024-05-12 13:31:11,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:11,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:11,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:12,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:31:12,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:12,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516741589] [2024-05-12 13:31:12,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516741589] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:12,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:12,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 13:31:12,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921023866] [2024-05-12 13:31:12,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:12,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 13:31:12,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:12,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 13:31:12,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-05-12 13:31:12,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-05-12 13:31:12,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 45 transitions, 122 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 13:31:12,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:12,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-05-12 13:31:12,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:13,462 INFO L124 PetriNetUnfolderBase]: 2591/3842 cut-off events. [2024-05-12 13:31:13,463 INFO L125 PetriNetUnfolderBase]: For 934/934 co-relation queries the response was YES. [2024-05-12 13:31:13,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8669 conditions, 3842 events. 2591/3842 cut-off events. For 934/934 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 20584 event pairs, 737 based on Foata normal form. 6/3833 useless extension candidates. Maximal degree in co-relation 8653. Up to 3663 conditions per place. [2024-05-12 13:31:13,480 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 48 selfloop transitions, 6 changer transitions 3/68 dead transitions. [2024-05-12 13:31:13,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 68 transitions, 292 flow [2024-05-12 13:31:13,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 13:31:13,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 13:31:13,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2024-05-12 13:31:13,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6170212765957447 [2024-05-12 13:31:13,482 INFO L175 Difference]: Start difference. First operand has 53 places, 45 transitions, 122 flow. Second operand 4 states and 116 transitions. [2024-05-12 13:31:13,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 68 transitions, 292 flow [2024-05-12 13:31:13,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 68 transitions, 284 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-05-12 13:31:13,484 INFO L231 Difference]: Finished difference. Result has 54 places, 45 transitions, 141 flow [2024-05-12 13:31:13,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=141, PETRI_PLACES=54, PETRI_TRANSITIONS=45} [2024-05-12 13:31:13,484 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 1 predicate places. [2024-05-12 13:31:13,485 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 45 transitions, 141 flow [2024-05-12 13:31:13,485 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 13:31:13,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:13,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:13,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-05-12 13:31:13,485 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:31:13,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:13,486 INFO L85 PathProgramCache]: Analyzing trace with hash -109373133, now seen corresponding path program 1 times [2024-05-12 13:31:13,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:13,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257352596] [2024-05-12 13:31:13,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:13,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:13,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:14,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:31:14,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:14,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257352596] [2024-05-12 13:31:14,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257352596] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:14,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:14,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 13:31:14,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151440058] [2024-05-12 13:31:14,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:14,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 13:31:14,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:14,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 13:31:14,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-05-12 13:31:14,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-05-12 13:31:14,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 45 transitions, 141 flow. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:14,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:14,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-05-12 13:31:14,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:14,675 INFO L124 PetriNetUnfolderBase]: 2049/3515 cut-off events. [2024-05-12 13:31:14,675 INFO L125 PetriNetUnfolderBase]: For 1354/1354 co-relation queries the response was YES. [2024-05-12 13:31:14,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7775 conditions, 3515 events. 2049/3515 cut-off events. For 1354/1354 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 21980 event pairs, 973 based on Foata normal form. 4/3396 useless extension candidates. Maximal degree in co-relation 7758. Up to 2957 conditions per place. [2024-05-12 13:31:14,693 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 50 selfloop transitions, 9 changer transitions 0/70 dead transitions. [2024-05-12 13:31:14,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 70 transitions, 329 flow [2024-05-12 13:31:14,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 13:31:14,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 13:31:14,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 126 transitions. [2024-05-12 13:31:14,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5361702127659574 [2024-05-12 13:31:14,695 INFO L175 Difference]: Start difference. First operand has 54 places, 45 transitions, 141 flow. Second operand 5 states and 126 transitions. [2024-05-12 13:31:14,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 70 transitions, 329 flow [2024-05-12 13:31:14,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 70 transitions, 312 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-05-12 13:31:14,697 INFO L231 Difference]: Finished difference. Result has 57 places, 52 transitions, 197 flow [2024-05-12 13:31:14,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=197, PETRI_PLACES=57, PETRI_TRANSITIONS=52} [2024-05-12 13:31:14,698 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 4 predicate places. [2024-05-12 13:31:14,698 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 197 flow [2024-05-12 13:31:14,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:14,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:14,698 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:14,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-05-12 13:31:14,699 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:31:14,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:14,699 INFO L85 PathProgramCache]: Analyzing trace with hash 874015212, now seen corresponding path program 1 times [2024-05-12 13:31:14,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:14,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303665227] [2024-05-12 13:31:14,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:14,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:14,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:15,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:31:15,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:15,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303665227] [2024-05-12 13:31:15,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303665227] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:15,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:15,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:31:15,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900189853] [2024-05-12 13:31:15,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:15,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:31:15,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:15,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:31:15,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:31:15,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-05-12 13:31:15,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 52 transitions, 197 flow. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:15,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:15,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-05-12 13:31:15,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:16,245 INFO L124 PetriNetUnfolderBase]: 2072/3553 cut-off events. [2024-05-12 13:31:16,248 INFO L125 PetriNetUnfolderBase]: For 2727/2727 co-relation queries the response was YES. [2024-05-12 13:31:16,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8919 conditions, 3553 events. 2072/3553 cut-off events. For 2727/2727 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 22226 event pairs, 941 based on Foata normal form. 4/3435 useless extension candidates. Maximal degree in co-relation 8899. Up to 2955 conditions per place. [2024-05-12 13:31:16,270 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 58 selfloop transitions, 13 changer transitions 0/82 dead transitions. [2024-05-12 13:31:16,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 82 transitions, 425 flow [2024-05-12 13:31:16,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:31:16,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:31:16,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 152 transitions. [2024-05-12 13:31:16,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5390070921985816 [2024-05-12 13:31:16,273 INFO L175 Difference]: Start difference. First operand has 57 places, 52 transitions, 197 flow. Second operand 6 states and 152 transitions. [2024-05-12 13:31:16,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 82 transitions, 425 flow [2024-05-12 13:31:16,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 82 transitions, 410 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-05-12 13:31:16,277 INFO L231 Difference]: Finished difference. Result has 61 places, 56 transitions, 245 flow [2024-05-12 13:31:16,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=245, PETRI_PLACES=61, PETRI_TRANSITIONS=56} [2024-05-12 13:31:16,279 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 8 predicate places. [2024-05-12 13:31:16,279 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 56 transitions, 245 flow [2024-05-12 13:31:16,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:16,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:16,280 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:16,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-05-12 13:31:16,280 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:31:16,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:16,280 INFO L85 PathProgramCache]: Analyzing trace with hash -82002608, now seen corresponding path program 1 times [2024-05-12 13:31:16,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:16,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108061741] [2024-05-12 13:31:16,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:16,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:16,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:17,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:31:17,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:17,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108061741] [2024-05-12 13:31:17,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108061741] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:17,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:17,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:31:17,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867577071] [2024-05-12 13:31:17,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:17,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:31:17,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:17,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:31:17,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:31:17,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-05-12 13:31:17,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 56 transitions, 245 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 13:31:17,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:17,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-05-12 13:31:17,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:17,856 INFO L124 PetriNetUnfolderBase]: 2632/4220 cut-off events. [2024-05-12 13:31:17,856 INFO L125 PetriNetUnfolderBase]: For 5212/5212 co-relation queries the response was YES. [2024-05-12 13:31:17,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11786 conditions, 4220 events. 2632/4220 cut-off events. For 5212/5212 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 24403 event pairs, 941 based on Foata normal form. 2/4139 useless extension candidates. Maximal degree in co-relation 11764. Up to 3683 conditions per place. [2024-05-12 13:31:17,880 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 59 selfloop transitions, 13 changer transitions 0/82 dead transitions. [2024-05-12 13:31:17,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 82 transitions, 475 flow [2024-05-12 13:31:17,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 13:31:17,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 13:31:17,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 126 transitions. [2024-05-12 13:31:17,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5361702127659574 [2024-05-12 13:31:17,882 INFO L175 Difference]: Start difference. First operand has 61 places, 56 transitions, 245 flow. Second operand 5 states and 126 transitions. [2024-05-12 13:31:17,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 82 transitions, 475 flow [2024-05-12 13:31:17,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 82 transitions, 444 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-05-12 13:31:17,890 INFO L231 Difference]: Finished difference. Result has 62 places, 59 transitions, 280 flow [2024-05-12 13:31:17,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=280, PETRI_PLACES=62, PETRI_TRANSITIONS=59} [2024-05-12 13:31:17,891 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 9 predicate places. [2024-05-12 13:31:17,891 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 59 transitions, 280 flow [2024-05-12 13:31:17,892 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 13:31:17,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:17,892 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:17,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-05-12 13:31:17,892 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:31:17,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:17,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1547019471, now seen corresponding path program 1 times [2024-05-12 13:31:17,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:17,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352795001] [2024-05-12 13:31:17,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:17,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:17,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:19,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:31:19,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:19,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352795001] [2024-05-12 13:31:19,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352795001] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:19,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:19,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:31:19,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752891661] [2024-05-12 13:31:19,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:19,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:31:19,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:19,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:31:19,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:31:19,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-05-12 13:31:19,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 59 transitions, 280 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 13:31:19,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:19,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-05-12 13:31:19,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:20,236 INFO L124 PetriNetUnfolderBase]: 2478/4159 cut-off events. [2024-05-12 13:31:20,237 INFO L125 PetriNetUnfolderBase]: For 7773/7773 co-relation queries the response was YES. [2024-05-12 13:31:20,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12207 conditions, 4159 events. 2478/4159 cut-off events. For 7773/7773 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 26149 event pairs, 1056 based on Foata normal form. 4/4023 useless extension candidates. Maximal degree in co-relation 12184. Up to 3465 conditions per place. [2024-05-12 13:31:20,257 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 78 selfloop transitions, 21 changer transitions 0/109 dead transitions. [2024-05-12 13:31:20,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 109 transitions, 632 flow [2024-05-12 13:31:20,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:31:20,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:31:20,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-05-12 13:31:20,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.523936170212766 [2024-05-12 13:31:20,259 INFO L175 Difference]: Start difference. First operand has 62 places, 59 transitions, 280 flow. Second operand 8 states and 197 transitions. [2024-05-12 13:31:20,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 109 transitions, 632 flow [2024-05-12 13:31:20,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 109 transitions, 594 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-05-12 13:31:20,265 INFO L231 Difference]: Finished difference. Result has 68 places, 67 transitions, 354 flow [2024-05-12 13:31:20,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=354, PETRI_PLACES=68, PETRI_TRANSITIONS=67} [2024-05-12 13:31:20,266 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 15 predicate places. [2024-05-12 13:31:20,266 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 67 transitions, 354 flow [2024-05-12 13:31:20,266 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 13:31:20,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:20,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:20,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-05-12 13:31:20,267 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:31:20,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:20,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1133277832, now seen corresponding path program 1 times [2024-05-12 13:31:20,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:20,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084729583] [2024-05-12 13:31:20,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:20,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:20,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:20,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:31:20,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:20,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084729583] [2024-05-12 13:31:20,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084729583] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:20,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:20,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 13:31:20,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856687075] [2024-05-12 13:31:20,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:20,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 13:31:20,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:20,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 13:31:20,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-05-12 13:31:20,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-05-12 13:31:20,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 67 transitions, 354 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 13:31:20,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:20,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-05-12 13:31:20,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:21,513 INFO L124 PetriNetUnfolderBase]: 3138/5276 cut-off events. [2024-05-12 13:31:21,514 INFO L125 PetriNetUnfolderBase]: For 9239/9239 co-relation queries the response was YES. [2024-05-12 13:31:21,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15532 conditions, 5276 events. 3138/5276 cut-off events. For 9239/9239 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 33262 event pairs, 1208 based on Foata normal form. 2/5099 useless extension candidates. Maximal degree in co-relation 15507. Up to 4507 conditions per place. [2024-05-12 13:31:21,542 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 73 selfloop transitions, 10 changer transitions 0/92 dead transitions. [2024-05-12 13:31:21,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 92 transitions, 610 flow [2024-05-12 13:31:21,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 13:31:21,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 13:31:21,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 115 transitions. [2024-05-12 13:31:21,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48936170212765956 [2024-05-12 13:31:21,544 INFO L175 Difference]: Start difference. First operand has 68 places, 67 transitions, 354 flow. Second operand 5 states and 115 transitions. [2024-05-12 13:31:21,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 92 transitions, 610 flow [2024-05-12 13:31:21,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 92 transitions, 553 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-05-12 13:31:21,552 INFO L231 Difference]: Finished difference. Result has 69 places, 75 transitions, 392 flow [2024-05-12 13:31:21,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=392, PETRI_PLACES=69, PETRI_TRANSITIONS=75} [2024-05-12 13:31:21,554 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 16 predicate places. [2024-05-12 13:31:21,554 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 75 transitions, 392 flow [2024-05-12 13:31:21,554 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 13:31:21,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:21,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:21,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-05-12 13:31:21,554 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:31:21,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:21,555 INFO L85 PathProgramCache]: Analyzing trace with hash -351100615, now seen corresponding path program 1 times [2024-05-12 13:31:21,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:21,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945161211] [2024-05-12 13:31:21,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:21,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:21,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:22,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:31:22,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:22,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945161211] [2024-05-12 13:31:22,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945161211] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:22,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:22,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:31:22,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542532521] [2024-05-12 13:31:22,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:22,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:31:22,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:22,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:31:22,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:31:23,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-05-12 13:31:23,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 75 transitions, 392 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 13:31:23,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:23,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-05-12 13:31:23,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:23,830 INFO L124 PetriNetUnfolderBase]: 3037/5088 cut-off events. [2024-05-12 13:31:23,830 INFO L125 PetriNetUnfolderBase]: For 9910/9910 co-relation queries the response was YES. [2024-05-12 13:31:23,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15699 conditions, 5088 events. 3037/5088 cut-off events. For 9910/9910 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 32034 event pairs, 989 based on Foata normal form. 2/4915 useless extension candidates. Maximal degree in co-relation 15672. Up to 4191 conditions per place. [2024-05-12 13:31:23,854 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 76 selfloop transitions, 27 changer transitions 0/114 dead transitions. [2024-05-12 13:31:23,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 114 transitions, 757 flow [2024-05-12 13:31:23,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:31:23,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:31:23,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 151 transitions. [2024-05-12 13:31:23,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5354609929078015 [2024-05-12 13:31:23,855 INFO L175 Difference]: Start difference. First operand has 69 places, 75 transitions, 392 flow. Second operand 6 states and 151 transitions. [2024-05-12 13:31:23,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 114 transitions, 757 flow [2024-05-12 13:31:23,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 114 transitions, 751 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-05-12 13:31:23,861 INFO L231 Difference]: Finished difference. Result has 76 places, 85 transitions, 571 flow [2024-05-12 13:31:23,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=571, PETRI_PLACES=76, PETRI_TRANSITIONS=85} [2024-05-12 13:31:23,862 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 23 predicate places. [2024-05-12 13:31:23,862 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 85 transitions, 571 flow [2024-05-12 13:31:23,862 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 13:31:23,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:23,863 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:23,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-05-12 13:31:23,863 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:31:23,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:23,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1596333159, now seen corresponding path program 2 times [2024-05-12 13:31:23,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:23,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87701108] [2024-05-12 13:31:23,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:23,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:23,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:25,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:31:25,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:25,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87701108] [2024-05-12 13:31:25,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87701108] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:25,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:25,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:31:25,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137634988] [2024-05-12 13:31:25,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:25,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:31:25,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:25,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:31:25,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:31:25,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-05-12 13:31:25,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 85 transitions, 571 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 13:31:25,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:25,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-05-12 13:31:25,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:26,169 INFO L124 PetriNetUnfolderBase]: 3086/5204 cut-off events. [2024-05-12 13:31:26,169 INFO L125 PetriNetUnfolderBase]: For 14426/14431 co-relation queries the response was YES. [2024-05-12 13:31:26,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17567 conditions, 5204 events. 3086/5204 cut-off events. For 14426/14431 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 33147 event pairs, 1004 based on Foata normal form. 10/5036 useless extension candidates. Maximal degree in co-relation 17535. Up to 4175 conditions per place. [2024-05-12 13:31:26,204 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 92 selfloop transitions, 28 changer transitions 0/131 dead transitions. [2024-05-12 13:31:26,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 131 transitions, 1016 flow [2024-05-12 13:31:26,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:31:26,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:31:26,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-05-12 13:31:26,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.541033434650456 [2024-05-12 13:31:26,206 INFO L175 Difference]: Start difference. First operand has 76 places, 85 transitions, 571 flow. Second operand 7 states and 178 transitions. [2024-05-12 13:31:26,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 131 transitions, 1016 flow [2024-05-12 13:31:26,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 131 transitions, 973 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-05-12 13:31:26,218 INFO L231 Difference]: Finished difference. Result has 81 places, 92 transitions, 669 flow [2024-05-12 13:31:26,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=528, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=669, PETRI_PLACES=81, PETRI_TRANSITIONS=92} [2024-05-12 13:31:26,219 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 28 predicate places. [2024-05-12 13:31:26,219 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 92 transitions, 669 flow [2024-05-12 13:31:26,220 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 13:31:26,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:26,220 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:26,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-05-12 13:31:26,221 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:31:26,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:26,221 INFO L85 PathProgramCache]: Analyzing trace with hash 712965297, now seen corresponding path program 1 times [2024-05-12 13:31:26,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:26,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695898419] [2024-05-12 13:31:26,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:26,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:26,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:27,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:31:27,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:27,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695898419] [2024-05-12 13:31:27,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695898419] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:27,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:27,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:31:27,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610790442] [2024-05-12 13:31:27,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:27,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:31:27,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:27,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:31:27,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:31:27,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-05-12 13:31:27,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 92 transitions, 669 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 13:31:27,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:27,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-05-12 13:31:27,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:28,219 INFO L124 PetriNetUnfolderBase]: 3153/5114 cut-off events. [2024-05-12 13:31:28,219 INFO L125 PetriNetUnfolderBase]: For 20884/20884 co-relation queries the response was YES. [2024-05-12 13:31:28,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19225 conditions, 5114 events. 3153/5114 cut-off events. For 20884/20884 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 31240 event pairs, 935 based on Foata normal form. 30/5023 useless extension candidates. Maximal degree in co-relation 19191. Up to 4043 conditions per place. [2024-05-12 13:31:28,254 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 97 selfloop transitions, 38 changer transitions 0/147 dead transitions. [2024-05-12 13:31:28,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 147 transitions, 1165 flow [2024-05-12 13:31:28,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:31:28,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:31:28,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 204 transitions. [2024-05-12 13:31:28,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5425531914893617 [2024-05-12 13:31:28,256 INFO L175 Difference]: Start difference. First operand has 81 places, 92 transitions, 669 flow. Second operand 8 states and 204 transitions. [2024-05-12 13:31:28,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 147 transitions, 1165 flow [2024-05-12 13:31:28,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 147 transitions, 1123 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-05-12 13:31:28,275 INFO L231 Difference]: Finished difference. Result has 88 places, 100 transitions, 828 flow [2024-05-12 13:31:28,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=627, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=828, PETRI_PLACES=88, PETRI_TRANSITIONS=100} [2024-05-12 13:31:28,276 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 35 predicate places. [2024-05-12 13:31:28,276 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 100 transitions, 828 flow [2024-05-12 13:31:28,276 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 13:31:28,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:28,277 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:28,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-05-12 13:31:28,277 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:31:28,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:28,277 INFO L85 PathProgramCache]: Analyzing trace with hash 380918153, now seen corresponding path program 1 times [2024-05-12 13:31:28,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:28,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308243421] [2024-05-12 13:31:28,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:28,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:28,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:29,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:31:29,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:29,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308243421] [2024-05-12 13:31:29,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308243421] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:29,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:29,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:31:29,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773916009] [2024-05-12 13:31:29,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:29,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:31:29,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:29,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:31:29,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:31:29,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-05-12 13:31:29,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 100 transitions, 828 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 13:31:29,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:29,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-05-12 13:31:29,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:30,110 INFO L124 PetriNetUnfolderBase]: 3285/5465 cut-off events. [2024-05-12 13:31:30,111 INFO L125 PetriNetUnfolderBase]: For 27433/27433 co-relation queries the response was YES. [2024-05-12 13:31:30,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21523 conditions, 5465 events. 3285/5465 cut-off events. For 27433/27433 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 34930 event pairs, 788 based on Foata normal form. 4/5320 useless extension candidates. Maximal degree in co-relation 21485. Up to 4616 conditions per place. [2024-05-12 13:31:30,152 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 102 selfloop transitions, 19 changer transitions 0/133 dead transitions. [2024-05-12 13:31:30,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 133 transitions, 1182 flow [2024-05-12 13:31:30,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:31:30,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:31:30,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 148 transitions. [2024-05-12 13:31:30,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.524822695035461 [2024-05-12 13:31:30,153 INFO L175 Difference]: Start difference. First operand has 88 places, 100 transitions, 828 flow. Second operand 6 states and 148 transitions. [2024-05-12 13:31:30,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 133 transitions, 1182 flow [2024-05-12 13:31:30,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 133 transitions, 1147 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-05-12 13:31:30,233 INFO L231 Difference]: Finished difference. Result has 92 places, 105 transitions, 889 flow [2024-05-12 13:31:30,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=793, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=889, PETRI_PLACES=92, PETRI_TRANSITIONS=105} [2024-05-12 13:31:30,234 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 39 predicate places. [2024-05-12 13:31:30,234 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 105 transitions, 889 flow [2024-05-12 13:31:30,234 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 13:31:30,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:30,235 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:30,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-05-12 13:31:30,235 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:31:30,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:30,235 INFO L85 PathProgramCache]: Analyzing trace with hash 2101472243, now seen corresponding path program 2 times [2024-05-12 13:31:30,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:30,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192063911] [2024-05-12 13:31:30,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:30,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:30,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:31,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:31:31,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:31,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192063911] [2024-05-12 13:31:31,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192063911] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:31,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:31,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:31:31,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493856132] [2024-05-12 13:31:31,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:31,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:31:31,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:31,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:31:31,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:31:31,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-05-12 13:31:31,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 105 transitions, 889 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 13:31:31,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:31,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-05-12 13:31:31,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:31,838 INFO L124 PetriNetUnfolderBase]: 3289/5348 cut-off events. [2024-05-12 13:31:31,839 INFO L125 PetriNetUnfolderBase]: For 29170/29170 co-relation queries the response was YES. [2024-05-12 13:31:31,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22031 conditions, 5348 events. 3289/5348 cut-off events. For 29170/29170 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 33155 event pairs, 921 based on Foata normal form. 4/5209 useless extension candidates. Maximal degree in co-relation 21990. Up to 4599 conditions per place. [2024-05-12 13:31:31,929 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 105 selfloop transitions, 19 changer transitions 0/136 dead transitions. [2024-05-12 13:31:31,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 136 transitions, 1254 flow [2024-05-12 13:31:31,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:31:31,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:31:31,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 149 transitions. [2024-05-12 13:31:31,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5283687943262412 [2024-05-12 13:31:31,930 INFO L175 Difference]: Start difference. First operand has 92 places, 105 transitions, 889 flow. Second operand 6 states and 149 transitions. [2024-05-12 13:31:31,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 136 transitions, 1254 flow [2024-05-12 13:31:31,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 136 transitions, 1202 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-05-12 13:31:31,956 INFO L231 Difference]: Finished difference. Result has 95 places, 107 transitions, 913 flow [2024-05-12 13:31:31,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=837, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=913, PETRI_PLACES=95, PETRI_TRANSITIONS=107} [2024-05-12 13:31:31,957 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 42 predicate places. [2024-05-12 13:31:31,957 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 107 transitions, 913 flow [2024-05-12 13:31:31,958 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 13:31:31,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:31,958 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:31,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-05-12 13:31:31,958 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:31:31,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:31,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1639547593, now seen corresponding path program 1 times [2024-05-12 13:31:31,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:31,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953303716] [2024-05-12 13:31:31,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:31,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:31,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:32,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:31:32,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:32,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953303716] [2024-05-12 13:31:32,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953303716] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:32,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:32,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:31:32,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008704026] [2024-05-12 13:31:32,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:32,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:31:32,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:32,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:31:32,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:31:32,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-05-12 13:31:32,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 107 transitions, 913 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:32,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:32,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-05-12 13:31:32,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:33,773 INFO L124 PetriNetUnfolderBase]: 3692/5991 cut-off events. [2024-05-12 13:31:33,773 INFO L125 PetriNetUnfolderBase]: For 36012/36012 co-relation queries the response was YES. [2024-05-12 13:31:33,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24852 conditions, 5991 events. 3692/5991 cut-off events. For 36012/36012 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 37401 event pairs, 1106 based on Foata normal form. 4/5848 useless extension candidates. Maximal degree in co-relation 24810. Up to 5101 conditions per place. [2024-05-12 13:31:33,812 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 133 selfloop transitions, 36 changer transitions 0/178 dead transitions. [2024-05-12 13:31:33,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 178 transitions, 1669 flow [2024-05-12 13:31:33,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:31:33,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:31:33,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 211 transitions. [2024-05-12 13:31:33,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4988179669030733 [2024-05-12 13:31:33,814 INFO L175 Difference]: Start difference. First operand has 95 places, 107 transitions, 913 flow. Second operand 9 states and 211 transitions. [2024-05-12 13:31:33,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 178 transitions, 1669 flow [2024-05-12 13:31:33,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 178 transitions, 1597 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-05-12 13:31:33,849 INFO L231 Difference]: Finished difference. Result has 102 places, 128 transitions, 1158 flow [2024-05-12 13:31:33,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=857, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1158, PETRI_PLACES=102, PETRI_TRANSITIONS=128} [2024-05-12 13:31:33,850 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 49 predicate places. [2024-05-12 13:31:33,850 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 128 transitions, 1158 flow [2024-05-12 13:31:33,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:33,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:33,850 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:33,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-05-12 13:31:33,851 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:31:33,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:33,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1854996761, now seen corresponding path program 2 times [2024-05-12 13:31:33,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:33,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840250924] [2024-05-12 13:31:33,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:33,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:33,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:34,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:31:34,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:34,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840250924] [2024-05-12 13:31:34,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840250924] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:34,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:34,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:31:34,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127701882] [2024-05-12 13:31:34,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:34,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:31:34,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:34,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:31:34,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:31:34,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-05-12 13:31:34,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 128 transitions, 1158 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 13:31:34,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:34,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-05-12 13:31:34,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:35,324 INFO L124 PetriNetUnfolderBase]: 3680/5983 cut-off events. [2024-05-12 13:31:35,324 INFO L125 PetriNetUnfolderBase]: For 39911/39913 co-relation queries the response was YES. [2024-05-12 13:31:35,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26043 conditions, 5983 events. 3680/5983 cut-off events. For 39911/39913 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 37360 event pairs, 1116 based on Foata normal form. 4/5834 useless extension candidates. Maximal degree in co-relation 25998. Up to 5071 conditions per place. [2024-05-12 13:31:35,364 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 103 selfloop transitions, 34 changer transitions 0/146 dead transitions. [2024-05-12 13:31:35,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 146 transitions, 1506 flow [2024-05-12 13:31:35,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 13:31:35,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 13:31:35,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2024-05-12 13:31:35,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5063829787234042 [2024-05-12 13:31:35,366 INFO L175 Difference]: Start difference. First operand has 102 places, 128 transitions, 1158 flow. Second operand 5 states and 119 transitions. [2024-05-12 13:31:35,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 146 transitions, 1506 flow [2024-05-12 13:31:35,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 146 transitions, 1393 flow, removed 39 selfloop flow, removed 4 redundant places. [2024-05-12 13:31:35,410 INFO L231 Difference]: Finished difference. Result has 103 places, 128 transitions, 1135 flow [2024-05-12 13:31:35,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1045, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1135, PETRI_PLACES=103, PETRI_TRANSITIONS=128} [2024-05-12 13:31:35,411 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 50 predicate places. [2024-05-12 13:31:35,411 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 128 transitions, 1135 flow [2024-05-12 13:31:35,411 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 13:31:35,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:35,411 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:35,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-05-12 13:31:35,412 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:31:35,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:35,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1841664281, now seen corresponding path program 3 times [2024-05-12 13:31:35,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:35,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348395129] [2024-05-12 13:31:35,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:35,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:35,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:36,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:31:36,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:36,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348395129] [2024-05-12 13:31:36,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348395129] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:36,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:36,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:31:36,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374585222] [2024-05-12 13:31:36,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:36,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:31:36,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:36,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:31:36,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:31:36,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-05-12 13:31:36,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 128 transitions, 1135 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 13:31:36,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:36,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-05-12 13:31:36,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:37,088 INFO L124 PetriNetUnfolderBase]: 3668/5955 cut-off events. [2024-05-12 13:31:37,089 INFO L125 PetriNetUnfolderBase]: For 40016/40018 co-relation queries the response was YES. [2024-05-12 13:31:37,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25992 conditions, 5955 events. 3668/5955 cut-off events. For 40016/40018 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 37083 event pairs, 1110 based on Foata normal form. 4/5810 useless extension candidates. Maximal degree in co-relation 25947. Up to 4999 conditions per place. [2024-05-12 13:31:37,122 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 110 selfloop transitions, 37 changer transitions 0/156 dead transitions. [2024-05-12 13:31:37,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 156 transitions, 1569 flow [2024-05-12 13:31:37,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:31:37,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:31:37,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 141 transitions. [2024-05-12 13:31:37,124 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-05-12 13:31:37,124 INFO L175 Difference]: Start difference. First operand has 103 places, 128 transitions, 1135 flow. Second operand 6 states and 141 transitions. [2024-05-12 13:31:37,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 156 transitions, 1569 flow [2024-05-12 13:31:37,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 156 transitions, 1493 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-05-12 13:31:37,157 INFO L231 Difference]: Finished difference. Result has 104 places, 131 transitions, 1179 flow [2024-05-12 13:31:37,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1059, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1179, PETRI_PLACES=104, PETRI_TRANSITIONS=131} [2024-05-12 13:31:37,157 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 51 predicate places. [2024-05-12 13:31:37,157 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 131 transitions, 1179 flow [2024-05-12 13:31:37,157 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 13:31:37,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:37,158 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:37,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-05-12 13:31:37,158 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:31:37,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:37,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1849247098, now seen corresponding path program 1 times [2024-05-12 13:31:37,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:37,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500743984] [2024-05-12 13:31:37,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:37,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:37,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:37,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:31:37,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:37,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500743984] [2024-05-12 13:31:37,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500743984] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:37,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:37,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:31:37,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496355052] [2024-05-12 13:31:37,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:37,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:31:37,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:37,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:31:37,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:31:37,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-05-12 13:31:37,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 131 transitions, 1179 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 13:31:37,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:37,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-05-12 13:31:37,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:38,666 INFO L124 PetriNetUnfolderBase]: 3727/6089 cut-off events. [2024-05-12 13:31:38,666 INFO L125 PetriNetUnfolderBase]: For 41596/41598 co-relation queries the response was YES. [2024-05-12 13:31:38,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26956 conditions, 6089 events. 3727/6089 cut-off events. For 41596/41598 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 38287 event pairs, 1108 based on Foata normal form. 2/5926 useless extension candidates. Maximal degree in co-relation 26911. Up to 5306 conditions per place. [2024-05-12 13:31:38,704 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 144 selfloop transitions, 17 changer transitions 0/170 dead transitions. [2024-05-12 13:31:38,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 170 transitions, 1722 flow [2024-05-12 13:31:38,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:31:38,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:31:38,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 141 transitions. [2024-05-12 13:31:38,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-05-12 13:31:38,705 INFO L175 Difference]: Start difference. First operand has 104 places, 131 transitions, 1179 flow. Second operand 6 states and 141 transitions. [2024-05-12 13:31:38,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 170 transitions, 1722 flow [2024-05-12 13:31:38,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 170 transitions, 1625 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-05-12 13:31:38,741 INFO L231 Difference]: Finished difference. Result has 108 places, 145 transitions, 1266 flow [2024-05-12 13:31:38,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1085, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1266, PETRI_PLACES=108, PETRI_TRANSITIONS=145} [2024-05-12 13:31:38,741 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 55 predicate places. [2024-05-12 13:31:38,742 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 145 transitions, 1266 flow [2024-05-12 13:31:38,742 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 13:31:38,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:38,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:38,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-05-12 13:31:38,742 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:31:38,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:38,742 INFO L85 PathProgramCache]: Analyzing trace with hash -352329328, now seen corresponding path program 2 times [2024-05-12 13:31:38,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:38,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690328112] [2024-05-12 13:31:38,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:38,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:38,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:39,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:31:39,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:39,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690328112] [2024-05-12 13:31:39,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690328112] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:39,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:39,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:31:39,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149859441] [2024-05-12 13:31:39,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:39,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:31:39,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:39,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:31:39,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:31:39,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-05-12 13:31:39,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 145 transitions, 1266 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 13:31:39,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:39,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-05-12 13:31:39,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:40,179 INFO L124 PetriNetUnfolderBase]: 3721/6051 cut-off events. [2024-05-12 13:31:40,179 INFO L125 PetriNetUnfolderBase]: For 44287/44289 co-relation queries the response was YES. [2024-05-12 13:31:40,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27895 conditions, 6051 events. 3721/6051 cut-off events. For 44287/44289 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 37862 event pairs, 1137 based on Foata normal form. 2/5902 useless extension candidates. Maximal degree in co-relation 27847. Up to 5338 conditions per place. [2024-05-12 13:31:40,225 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 142 selfloop transitions, 13 changer transitions 0/164 dead transitions. [2024-05-12 13:31:40,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 164 transitions, 1649 flow [2024-05-12 13:31:40,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:31:40,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:31:40,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 133 transitions. [2024-05-12 13:31:40,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4716312056737589 [2024-05-12 13:31:40,226 INFO L175 Difference]: Start difference. First operand has 108 places, 145 transitions, 1266 flow. Second operand 6 states and 133 transitions. [2024-05-12 13:31:40,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 164 transitions, 1649 flow [2024-05-12 13:31:40,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 164 transitions, 1617 flow, removed 15 selfloop flow, removed 1 redundant places. [2024-05-12 13:31:40,276 INFO L231 Difference]: Finished difference. Result has 113 places, 146 transitions, 1275 flow [2024-05-12 13:31:40,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1236, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1275, PETRI_PLACES=113, PETRI_TRANSITIONS=146} [2024-05-12 13:31:40,277 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 60 predicate places. [2024-05-12 13:31:40,277 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 146 transitions, 1275 flow [2024-05-12 13:31:40,277 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 13:31:40,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:40,277 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:40,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-05-12 13:31:40,278 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:31:40,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:40,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1841648409, now seen corresponding path program 1 times [2024-05-12 13:31:40,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:40,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90916400] [2024-05-12 13:31:40,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:40,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:40,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:41,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:31:41,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:41,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90916400] [2024-05-12 13:31:41,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90916400] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:41,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:41,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:31:41,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210872401] [2024-05-12 13:31:41,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:41,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:31:41,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:41,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:31:41,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:31:41,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-05-12 13:31:41,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 146 transitions, 1275 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:41,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:41,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-05-12 13:31:41,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:42,221 INFO L124 PetriNetUnfolderBase]: 3716/6063 cut-off events. [2024-05-12 13:31:42,221 INFO L125 PetriNetUnfolderBase]: For 47343/47345 co-relation queries the response was YES. [2024-05-12 13:31:42,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27977 conditions, 6063 events. 3716/6063 cut-off events. For 47343/47345 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 38083 event pairs, 1735 based on Foata normal form. 2/5915 useless extension candidates. Maximal degree in co-relation 27926. Up to 5312 conditions per place. [2024-05-12 13:31:42,260 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 145 selfloop transitions, 17 changer transitions 0/171 dead transitions. [2024-05-12 13:31:42,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 171 transitions, 1710 flow [2024-05-12 13:31:42,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:31:42,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:31:42,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 148 transitions. [2024-05-12 13:31:42,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44984802431610943 [2024-05-12 13:31:42,261 INFO L175 Difference]: Start difference. First operand has 113 places, 146 transitions, 1275 flow. Second operand 7 states and 148 transitions. [2024-05-12 13:31:42,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 171 transitions, 1710 flow [2024-05-12 13:31:42,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 171 transitions, 1682 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-05-12 13:31:42,300 INFO L231 Difference]: Finished difference. Result has 118 places, 150 transitions, 1328 flow [2024-05-12 13:31:42,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1249, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1328, PETRI_PLACES=118, PETRI_TRANSITIONS=150} [2024-05-12 13:31:42,301 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 65 predicate places. [2024-05-12 13:31:42,301 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 150 transitions, 1328 flow [2024-05-12 13:31:42,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:42,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:42,302 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 13:31:42,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-05-12 13:31:42,302 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:31:42,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:42,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1579560122, now seen corresponding path program 1 times [2024-05-12 13:31:42,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:42,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103364125] [2024-05-12 13:31:42,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:42,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:42,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:43,425 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 13:31:43,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:43,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103364125] [2024-05-12 13:31:43,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103364125] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:43,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:43,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:31:43,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575352086] [2024-05-12 13:31:43,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:43,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:31:43,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:43,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:31:43,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:31:43,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-05-12 13:31:43,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 150 transitions, 1328 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 13:31:43,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:43,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-05-12 13:31:43,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:44,552 INFO L124 PetriNetUnfolderBase]: 3679/6272 cut-off events. [2024-05-12 13:31:44,552 INFO L125 PetriNetUnfolderBase]: For 52125/52127 co-relation queries the response was YES. [2024-05-12 13:31:44,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28944 conditions, 6272 events. 3679/6272 cut-off events. For 52125/52127 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 41274 event pairs, 710 based on Foata normal form. 16/6082 useless extension candidates. Maximal degree in co-relation 28891. Up to 4997 conditions per place. [2024-05-12 13:31:44,606 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 156 selfloop transitions, 23 changer transitions 0/191 dead transitions. [2024-05-12 13:31:44,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 191 transitions, 1864 flow [2024-05-12 13:31:44,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:31:44,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:31:44,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2024-05-12 13:31:44,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5227963525835866 [2024-05-12 13:31:44,608 INFO L175 Difference]: Start difference. First operand has 118 places, 150 transitions, 1328 flow. Second operand 7 states and 172 transitions. [2024-05-12 13:31:44,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 191 transitions, 1864 flow [2024-05-12 13:31:44,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 191 transitions, 1819 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-05-12 13:31:44,658 INFO L231 Difference]: Finished difference. Result has 123 places, 155 transitions, 1397 flow [2024-05-12 13:31:44,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1283, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1397, PETRI_PLACES=123, PETRI_TRANSITIONS=155} [2024-05-12 13:31:44,658 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 70 predicate places. [2024-05-12 13:31:44,659 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 155 transitions, 1397 flow [2024-05-12 13:31:44,659 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 13:31:44,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:44,659 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 13:31:44,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-05-12 13:31:44,659 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:31:44,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:44,660 INFO L85 PathProgramCache]: Analyzing trace with hash -194806824, now seen corresponding path program 2 times [2024-05-12 13:31:44,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:44,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162755732] [2024-05-12 13:31:44,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:44,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:44,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:45,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:31:45,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:45,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162755732] [2024-05-12 13:31:45,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162755732] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:45,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:45,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:31:45,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43707007] [2024-05-12 13:31:45,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:45,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:31:45,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:45,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:31:45,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:31:45,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-05-12 13:31:45,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 155 transitions, 1397 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 13:31:45,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:45,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-05-12 13:31:45,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:46,928 INFO L124 PetriNetUnfolderBase]: 3835/6002 cut-off events. [2024-05-12 13:31:46,928 INFO L125 PetriNetUnfolderBase]: For 58161/58163 co-relation queries the response was YES. [2024-05-12 13:31:46,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30222 conditions, 6002 events. 3835/6002 cut-off events. For 58161/58163 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 36030 event pairs, 791 based on Foata normal form. 16/5948 useless extension candidates. Maximal degree in co-relation 30166. Up to 4649 conditions per place. [2024-05-12 13:31:46,967 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 135 selfloop transitions, 58 changer transitions 0/205 dead transitions. [2024-05-12 13:31:46,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 205 transitions, 2095 flow [2024-05-12 13:31:46,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:31:46,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:31:46,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 182 transitions. [2024-05-12 13:31:46,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5531914893617021 [2024-05-12 13:31:46,973 INFO L175 Difference]: Start difference. First operand has 123 places, 155 transitions, 1397 flow. Second operand 7 states and 182 transitions. [2024-05-12 13:31:46,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 205 transitions, 2095 flow [2024-05-12 13:31:47,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 205 transitions, 2047 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-05-12 13:31:47,027 INFO L231 Difference]: Finished difference. Result has 128 places, 161 transitions, 1614 flow [2024-05-12 13:31:47,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1349, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1614, PETRI_PLACES=128, PETRI_TRANSITIONS=161} [2024-05-12 13:31:47,028 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 75 predicate places. [2024-05-12 13:31:47,028 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 161 transitions, 1614 flow [2024-05-12 13:31:47,028 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 13:31:47,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:47,028 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 13:31:47,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-05-12 13:31:47,029 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:31:47,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:47,029 INFO L85 PathProgramCache]: Analyzing trace with hash -194811474, now seen corresponding path program 3 times [2024-05-12 13:31:47,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:47,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266162350] [2024-05-12 13:31:47,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:47,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:47,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:48,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:31:48,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:48,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266162350] [2024-05-12 13:31:48,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266162350] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:48,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:48,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:31:48,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756058162] [2024-05-12 13:31:48,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:48,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:31:48,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:48,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:31:48,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:31:48,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-05-12 13:31:48,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 161 transitions, 1614 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 13:31:48,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:48,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-05-12 13:31:48,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:49,266 INFO L124 PetriNetUnfolderBase]: 3887/6398 cut-off events. [2024-05-12 13:31:49,267 INFO L125 PetriNetUnfolderBase]: For 68907/68909 co-relation queries the response was YES. [2024-05-12 13:31:49,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32808 conditions, 6398 events. 3887/6398 cut-off events. For 68907/68909 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 41020 event pairs, 1008 based on Foata normal form. 4/6220 useless extension candidates. Maximal degree in co-relation 32750. Up to 5403 conditions per place. [2024-05-12 13:31:49,320 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 157 selfloop transitions, 29 changer transitions 0/198 dead transitions. [2024-05-12 13:31:49,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 198 transitions, 2160 flow [2024-05-12 13:31:49,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:31:49,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:31:49,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-05-12 13:31:49,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5258358662613982 [2024-05-12 13:31:49,322 INFO L175 Difference]: Start difference. First operand has 128 places, 161 transitions, 1614 flow. Second operand 7 states and 173 transitions. [2024-05-12 13:31:49,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 198 transitions, 2160 flow [2024-05-12 13:31:49,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 198 transitions, 2084 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-05-12 13:31:49,418 INFO L231 Difference]: Finished difference. Result has 132 places, 163 transitions, 1641 flow [2024-05-12 13:31:49,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1540, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1641, PETRI_PLACES=132, PETRI_TRANSITIONS=163} [2024-05-12 13:31:49,418 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 79 predicate places. [2024-05-12 13:31:49,418 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 163 transitions, 1641 flow [2024-05-12 13:31:49,419 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 13:31:49,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:49,419 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 13:31:49,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-05-12 13:31:49,419 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:31:49,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:49,419 INFO L85 PathProgramCache]: Analyzing trace with hash 211557276, now seen corresponding path program 4 times [2024-05-12 13:31:49,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:49,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341221790] [2024-05-12 13:31:49,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:49,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:49,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:50,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:31:50,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:50,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341221790] [2024-05-12 13:31:50,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341221790] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:50,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:50,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:31:50,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455998767] [2024-05-12 13:31:50,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:50,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:31:50,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:50,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:31:50,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:31:50,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-05-12 13:31:50,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 163 transitions, 1641 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 13:31:50,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:50,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-05-12 13:31:50,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:51,959 INFO L124 PetriNetUnfolderBase]: 4017/6683 cut-off events. [2024-05-12 13:31:51,960 INFO L125 PetriNetUnfolderBase]: For 77020/77030 co-relation queries the response was YES. [2024-05-12 13:31:51,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34395 conditions, 6683 events. 4017/6683 cut-off events. For 77020/77030 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 43795 event pairs, 1075 based on Foata normal form. 32/6528 useless extension candidates. Maximal degree in co-relation 34335. Up to 5317 conditions per place. [2024-05-12 13:31:52,028 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 169 selfloop transitions, 35 changer transitions 0/216 dead transitions. [2024-05-12 13:31:52,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 216 transitions, 2384 flow [2024-05-12 13:31:52,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:31:52,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:31:52,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-05-12 13:31:52,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5452127659574468 [2024-05-12 13:31:52,030 INFO L175 Difference]: Start difference. First operand has 132 places, 163 transitions, 1641 flow. Second operand 8 states and 205 transitions. [2024-05-12 13:31:52,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 216 transitions, 2384 flow [2024-05-12 13:31:52,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 216 transitions, 2289 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-05-12 13:31:52,121 INFO L231 Difference]: Finished difference. Result has 135 places, 165 transitions, 1670 flow [2024-05-12 13:31:52,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1552, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1670, PETRI_PLACES=135, PETRI_TRANSITIONS=165} [2024-05-12 13:31:52,122 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 82 predicate places. [2024-05-12 13:31:52,122 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 165 transitions, 1670 flow [2024-05-12 13:31:52,123 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 13:31:52,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:52,123 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 13:31:52,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-05-12 13:31:52,123 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:31:52,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:52,124 INFO L85 PathProgramCache]: Analyzing trace with hash 211794860, now seen corresponding path program 1 times [2024-05-12 13:31:52,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:52,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785584040] [2024-05-12 13:31:52,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:52,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:52,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:53,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:31:53,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:53,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785584040] [2024-05-12 13:31:53,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785584040] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:53,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:53,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:31:53,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354533874] [2024-05-12 13:31:53,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:53,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:31:53,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:53,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:31:53,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:31:54,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-05-12 13:31:54,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 165 transitions, 1670 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 13:31:54,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:54,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-05-12 13:31:54,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:55,497 INFO L124 PetriNetUnfolderBase]: 4331/7068 cut-off events. [2024-05-12 13:31:55,498 INFO L125 PetriNetUnfolderBase]: For 75679/75689 co-relation queries the response was YES. [2024-05-12 13:31:55,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36056 conditions, 7068 events. 4331/7068 cut-off events. For 75679/75689 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 45461 event pairs, 1193 based on Foata normal form. 10/6889 useless extension candidates. Maximal degree in co-relation 35995. Up to 6016 conditions per place. [2024-05-12 13:31:55,553 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 186 selfloop transitions, 35 changer transitions 0/230 dead transitions. [2024-05-12 13:31:55,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 230 transitions, 2439 flow [2024-05-12 13:31:55,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:31:55,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:31:55,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 216 transitions. [2024-05-12 13:31:55,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2024-05-12 13:31:55,554 INFO L175 Difference]: Start difference. First operand has 135 places, 165 transitions, 1670 flow. Second operand 9 states and 216 transitions. [2024-05-12 13:31:55,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 230 transitions, 2439 flow [2024-05-12 13:31:55,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 230 transitions, 2340 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-05-12 13:31:55,626 INFO L231 Difference]: Finished difference. Result has 139 places, 176 transitions, 1767 flow [2024-05-12 13:31:55,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1588, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1767, PETRI_PLACES=139, PETRI_TRANSITIONS=176} [2024-05-12 13:31:55,627 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 86 predicate places. [2024-05-12 13:31:55,627 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 176 transitions, 1767 flow [2024-05-12 13:31:55,627 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 13:31:55,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:55,628 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 13:31:55,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-05-12 13:31:55,628 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:31:55,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:55,628 INFO L85 PathProgramCache]: Analyzing trace with hash 211564220, now seen corresponding path program 2 times [2024-05-12 13:31:55,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:55,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563247069] [2024-05-12 13:31:55,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:55,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:55,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:57,378 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 13:31:57,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:57,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563247069] [2024-05-12 13:31:57,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563247069] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:57,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:57,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:31:57,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375935501] [2024-05-12 13:31:57,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:57,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:31:57,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:57,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:31:57,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:31:57,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-05-12 13:31:57,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 176 transitions, 1767 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 13:31:57,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:57,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-05-12 13:31:57,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:58,878 INFO L124 PetriNetUnfolderBase]: 4326/7061 cut-off events. [2024-05-12 13:31:58,879 INFO L125 PetriNetUnfolderBase]: For 74355/74365 co-relation queries the response was YES. [2024-05-12 13:31:58,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35924 conditions, 7061 events. 4326/7061 cut-off events. For 74355/74365 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 45450 event pairs, 1193 based on Foata normal form. 10/6882 useless extension candidates. Maximal degree in co-relation 35861. Up to 6009 conditions per place. [2024-05-12 13:31:58,936 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 185 selfloop transitions, 35 changer transitions 0/229 dead transitions. [2024-05-12 13:31:58,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 229 transitions, 2428 flow [2024-05-12 13:31:58,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:31:58,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:31:58,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 216 transitions. [2024-05-12 13:31:58,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2024-05-12 13:31:58,938 INFO L175 Difference]: Start difference. First operand has 139 places, 176 transitions, 1767 flow. Second operand 9 states and 216 transitions. [2024-05-12 13:31:58,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 229 transitions, 2428 flow [2024-05-12 13:31:59,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 229 transitions, 2374 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-05-12 13:31:59,023 INFO L231 Difference]: Finished difference. Result has 145 places, 176 transitions, 1791 flow [2024-05-12 13:31:59,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1713, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1791, PETRI_PLACES=145, PETRI_TRANSITIONS=176} [2024-05-12 13:31:59,024 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 92 predicate places. [2024-05-12 13:31:59,024 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 176 transitions, 1791 flow [2024-05-12 13:31:59,024 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 13:31:59,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:59,025 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 13:31:59,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-05-12 13:31:59,025 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:31:59,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:59,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1492233631, now seen corresponding path program 1 times [2024-05-12 13:31:59,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:59,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307926956] [2024-05-12 13:31:59,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:59,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:59,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:32:00,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:32:00,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:32:00,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307926956] [2024-05-12 13:32:00,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307926956] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:32:00,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:32:00,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:32:00,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904296605] [2024-05-12 13:32:00,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:32:00,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:32:00,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:32:00,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:32:00,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:32:00,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-05-12 13:32:00,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 176 transitions, 1791 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 13:32:00,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:32:00,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-05-12 13:32:00,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:32:01,279 INFO L124 PetriNetUnfolderBase]: 4385/7248 cut-off events. [2024-05-12 13:32:01,279 INFO L125 PetriNetUnfolderBase]: For 81005/81007 co-relation queries the response was YES. [2024-05-12 13:32:01,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36725 conditions, 7248 events. 4385/7248 cut-off events. For 81005/81007 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 47639 event pairs, 2088 based on Foata normal form. 2/7052 useless extension candidates. Maximal degree in co-relation 36660. Up to 6220 conditions per place. [2024-05-12 13:32:01,352 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 182 selfloop transitions, 26 changer transitions 0/217 dead transitions. [2024-05-12 13:32:01,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 217 transitions, 2457 flow [2024-05-12 13:32:01,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:32:01,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:32:01,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 166 transitions. [2024-05-12 13:32:01,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5045592705167173 [2024-05-12 13:32:01,353 INFO L175 Difference]: Start difference. First operand has 145 places, 176 transitions, 1791 flow. Second operand 7 states and 166 transitions. [2024-05-12 13:32:01,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 217 transitions, 2457 flow [2024-05-12 13:32:01,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 217 transitions, 2348 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-05-12 13:32:01,459 INFO L231 Difference]: Finished difference. Result has 146 places, 184 transitions, 1838 flow [2024-05-12 13:32:01,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1686, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1838, PETRI_PLACES=146, PETRI_TRANSITIONS=184} [2024-05-12 13:32:01,460 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 93 predicate places. [2024-05-12 13:32:01,460 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 184 transitions, 1838 flow [2024-05-12 13:32:01,460 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 13:32:01,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:32:01,460 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 13:32:01,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-05-12 13:32:01,461 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:32:01,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:32:01,461 INFO L85 PathProgramCache]: Analyzing trace with hash -772055759, now seen corresponding path program 2 times [2024-05-12 13:32:01,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:32:01,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165618219] [2024-05-12 13:32:01,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:32:01,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:32:01,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:32:02,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:32:02,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:32:02,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165618219] [2024-05-12 13:32:02,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165618219] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:32:02,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:32:02,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:32:02,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709227885] [2024-05-12 13:32:02,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:32:02,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:32:02,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:32:02,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:32:02,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:32:02,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-05-12 13:32:02,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 184 transitions, 1838 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 13:32:02,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:32:02,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-05-12 13:32:02,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:32:03,447 INFO L124 PetriNetUnfolderBase]: 4419/7292 cut-off events. [2024-05-12 13:32:03,448 INFO L125 PetriNetUnfolderBase]: For 84798/84800 co-relation queries the response was YES. [2024-05-12 13:32:03,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37650 conditions, 7292 events. 4419/7292 cut-off events. For 84798/84800 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 47900 event pairs, 2090 based on Foata normal form. 2/7096 useless extension candidates. Maximal degree in co-relation 37583. Up to 6320 conditions per place. [2024-05-12 13:32:03,512 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 185 selfloop transitions, 22 changer transitions 0/216 dead transitions. [2024-05-12 13:32:03,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 216 transitions, 2399 flow [2024-05-12 13:32:03,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:32:03,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:32:03,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 161 transitions. [2024-05-12 13:32:03,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48936170212765956 [2024-05-12 13:32:03,513 INFO L175 Difference]: Start difference. First operand has 146 places, 184 transitions, 1838 flow. Second operand 7 states and 161 transitions. [2024-05-12 13:32:03,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 216 transitions, 2399 flow [2024-05-12 13:32:03,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 216 transitions, 2344 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-05-12 13:32:03,613 INFO L231 Difference]: Finished difference. Result has 150 places, 187 transitions, 1872 flow [2024-05-12 13:32:03,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1791, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1872, PETRI_PLACES=150, PETRI_TRANSITIONS=187} [2024-05-12 13:32:03,613 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 97 predicate places. [2024-05-12 13:32:03,613 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 187 transitions, 1872 flow [2024-05-12 13:32:03,613 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 13:32:03,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:32:03,614 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 13:32:03,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-05-12 13:32:03,614 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:32:03,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:32:03,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1923369889, now seen corresponding path program 3 times [2024-05-12 13:32:03,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:32:03,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778311574] [2024-05-12 13:32:03,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:32:03,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:32:03,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:32:04,430 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 13:32:04,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:32:04,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778311574] [2024-05-12 13:32:04,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778311574] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:32:04,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:32:04,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:32:04,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026858977] [2024-05-12 13:32:04,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:32:04,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:32:04,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:32:04,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:32:04,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:32:04,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-05-12 13:32:04,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 187 transitions, 1872 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 13:32:04,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:32:04,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-05-12 13:32:04,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:32:05,476 INFO L124 PetriNetUnfolderBase]: 4413/7228 cut-off events. [2024-05-12 13:32:05,476 INFO L125 PetriNetUnfolderBase]: For 87039/87041 co-relation queries the response was YES. [2024-05-12 13:32:05,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37676 conditions, 7228 events. 4413/7228 cut-off events. For 87039/87041 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 47010 event pairs, 2122 based on Foata normal form. 2/7054 useless extension candidates. Maximal degree in co-relation 37607. Up to 6349 conditions per place. [2024-05-12 13:32:05,539 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 185 selfloop transitions, 17 changer transitions 0/211 dead transitions. [2024-05-12 13:32:05,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 211 transitions, 2373 flow [2024-05-12 13:32:05,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:32:05,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:32:05,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 154 transitions. [2024-05-12 13:32:05,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46808510638297873 [2024-05-12 13:32:05,541 INFO L175 Difference]: Start difference. First operand has 150 places, 187 transitions, 1872 flow. Second operand 7 states and 154 transitions. [2024-05-12 13:32:05,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 211 transitions, 2373 flow [2024-05-12 13:32:05,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 211 transitions, 2315 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-05-12 13:32:05,654 INFO L231 Difference]: Finished difference. Result has 152 places, 188 transitions, 1865 flow [2024-05-12 13:32:05,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1816, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1865, PETRI_PLACES=152, PETRI_TRANSITIONS=188} [2024-05-12 13:32:05,655 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 99 predicate places. [2024-05-12 13:32:05,655 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 188 transitions, 1865 flow [2024-05-12 13:32:05,655 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 13:32:05,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:32:05,655 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:32:05,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-05-12 13:32:05,655 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:32:05,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:32:05,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1256535144, now seen corresponding path program 1 times [2024-05-12 13:32:05,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:32:05,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598994363] [2024-05-12 13:32:05,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:32:05,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:32:05,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:32:06,508 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 13:32:06,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:32:06,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598994363] [2024-05-12 13:32:06,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598994363] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:32:06,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:32:06,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:32:06,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718132806] [2024-05-12 13:32:06,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:32:06,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:32:06,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:32:06,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:32:06,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:32:06,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-05-12 13:32:06,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 188 transitions, 1865 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 13:32:06,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:32:06,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-05-12 13:32:06,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:32:07,664 INFO L124 PetriNetUnfolderBase]: 4420/7117 cut-off events. [2024-05-12 13:32:07,664 INFO L125 PetriNetUnfolderBase]: For 89242/89244 co-relation queries the response was YES. [2024-05-12 13:32:07,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37640 conditions, 7117 events. 4420/7117 cut-off events. For 89242/89244 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 45445 event pairs, 2107 based on Foata normal form. 1/6972 useless extension candidates. Maximal degree in co-relation 37570. Up to 6354 conditions per place. [2024-05-12 13:32:07,729 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 183 selfloop transitions, 20 changer transitions 0/212 dead transitions. [2024-05-12 13:32:07,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 212 transitions, 2383 flow [2024-05-12 13:32:07,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:32:07,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:32:07,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 136 transitions. [2024-05-12 13:32:07,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48226950354609927 [2024-05-12 13:32:07,731 INFO L175 Difference]: Start difference. First operand has 152 places, 188 transitions, 1865 flow. Second operand 6 states and 136 transitions. [2024-05-12 13:32:07,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 212 transitions, 2383 flow [2024-05-12 13:32:07,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 212 transitions, 2343 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-05-12 13:32:07,846 INFO L231 Difference]: Finished difference. Result has 153 places, 191 transitions, 1913 flow [2024-05-12 13:32:07,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1825, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1913, PETRI_PLACES=153, PETRI_TRANSITIONS=191} [2024-05-12 13:32:07,849 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 100 predicate places. [2024-05-12 13:32:07,849 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 191 transitions, 1913 flow [2024-05-12 13:32:07,850 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 13:32:07,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:32:07,850 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:32:07,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-05-12 13:32:07,850 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:32:07,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:32:07,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1906050361, now seen corresponding path program 1 times [2024-05-12 13:32:07,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:32:07,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728437760] [2024-05-12 13:32:07,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:32:07,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:32:07,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:32:08,553 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 13:32:08,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:32:08,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728437760] [2024-05-12 13:32:08,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728437760] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:32:08,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:32:08,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:32:08,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305764266] [2024-05-12 13:32:08,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:32:08,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:32:08,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:32:08,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:32:08,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:32:08,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-05-12 13:32:08,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 191 transitions, 1913 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:32:08,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:32:08,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-05-12 13:32:08,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:32:10,036 INFO L124 PetriNetUnfolderBase]: 4614/7420 cut-off events. [2024-05-12 13:32:10,037 INFO L125 PetriNetUnfolderBase]: For 99087/99087 co-relation queries the response was YES. [2024-05-12 13:32:10,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40300 conditions, 7420 events. 4614/7420 cut-off events. For 99087/99087 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 47525 event pairs, 1918 based on Foata normal form. 4/7267 useless extension candidates. Maximal degree in co-relation 40229. Up to 6491 conditions per place. [2024-05-12 13:32:10,096 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 213 selfloop transitions, 37 changer transitions 0/259 dead transitions. [2024-05-12 13:32:10,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 259 transitions, 2883 flow [2024-05-12 13:32:10,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:32:10,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:32:10,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 228 transitions. [2024-05-12 13:32:10,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4851063829787234 [2024-05-12 13:32:10,098 INFO L175 Difference]: Start difference. First operand has 153 places, 191 transitions, 1913 flow. Second operand 10 states and 228 transitions. [2024-05-12 13:32:10,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 259 transitions, 2883 flow [2024-05-12 13:32:10,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 259 transitions, 2835 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-05-12 13:32:10,219 INFO L231 Difference]: Finished difference. Result has 163 places, 215 transitions, 2264 flow [2024-05-12 13:32:10,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1865, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2264, PETRI_PLACES=163, PETRI_TRANSITIONS=215} [2024-05-12 13:32:10,220 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 110 predicate places. [2024-05-12 13:32:10,220 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 215 transitions, 2264 flow [2024-05-12 13:32:10,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:32:10,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:32:10,220 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 13:32:10,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-05-12 13:32:10,221 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:32:10,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:32:10,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1328429480, now seen corresponding path program 1 times [2024-05-12 13:32:10,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:32:10,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423592612] [2024-05-12 13:32:10,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:32:10,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:32:10,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:32:11,691 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 13:32:11,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:32:11,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423592612] [2024-05-12 13:32:11,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423592612] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:32:11,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:32:11,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:32:11,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460885665] [2024-05-12 13:32:11,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:32:11,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:32:11,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:32:11,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:32:11,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:32:11,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-05-12 13:32:11,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 215 transitions, 2264 flow. Second operand has 11 states, 11 states have (on average 13.454545454545455) internal successors, (148), 11 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:32:11,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:32:11,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-05-12 13:32:11,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:32:13,053 INFO L124 PetriNetUnfolderBase]: 5032/8114 cut-off events. [2024-05-12 13:32:13,053 INFO L125 PetriNetUnfolderBase]: For 127107/127112 co-relation queries the response was YES. [2024-05-12 13:32:13,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47447 conditions, 8114 events. 5032/8114 cut-off events. For 127107/127112 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 52949 event pairs, 1758 based on Foata normal form. 16/7952 useless extension candidates. Maximal degree in co-relation 47371. Up to 6016 conditions per place. [2024-05-12 13:32:13,145 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 220 selfloop transitions, 52 changer transitions 0/281 dead transitions. [2024-05-12 13:32:13,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 281 transitions, 3322 flow [2024-05-12 13:32:13,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:32:13,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:32:13,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 225 transitions. [2024-05-12 13:32:13,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2024-05-12 13:32:13,147 INFO L175 Difference]: Start difference. First operand has 163 places, 215 transitions, 2264 flow. Second operand 9 states and 225 transitions. [2024-05-12 13:32:13,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 281 transitions, 3322 flow [2024-05-12 13:32:13,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 281 transitions, 3208 flow, removed 47 selfloop flow, removed 3 redundant places. [2024-05-12 13:32:13,326 INFO L231 Difference]: Finished difference. Result has 170 places, 219 transitions, 2373 flow [2024-05-12 13:32:13,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2150, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2373, PETRI_PLACES=170, PETRI_TRANSITIONS=219} [2024-05-12 13:32:13,326 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 117 predicate places. [2024-05-12 13:32:13,326 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 219 transitions, 2373 flow [2024-05-12 13:32:13,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.454545454545455) internal successors, (148), 11 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:32:13,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:32:13,327 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 13:32:13,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-05-12 13:32:13,327 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:32:13,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:32:13,327 INFO L85 PathProgramCache]: Analyzing trace with hash -647722425, now seen corresponding path program 2 times [2024-05-12 13:32:13,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:32:13,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999558613] [2024-05-12 13:32:13,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:32:13,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:32:13,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:32:14,038 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 13:32:14,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:32:14,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999558613] [2024-05-12 13:32:14,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999558613] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:32:14,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:32:14,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:32:14,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152030955] [2024-05-12 13:32:14,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:32:14,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:32:14,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:32:14,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:32:14,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:32:14,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-05-12 13:32:14,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 219 transitions, 2373 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 13:32:14,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:32:14,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-05-12 13:32:14,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:32:15,402 INFO L124 PetriNetUnfolderBase]: 5088/8267 cut-off events. [2024-05-12 13:32:15,402 INFO L125 PetriNetUnfolderBase]: For 135382/135387 co-relation queries the response was YES. [2024-05-12 13:32:15,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48763 conditions, 8267 events. 5088/8267 cut-off events. For 135382/135387 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 54796 event pairs, 2027 based on Foata normal form. 12/8094 useless extension candidates. Maximal degree in co-relation 48685. Up to 7238 conditions per place. [2024-05-12 13:32:15,483 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 196 selfloop transitions, 35 changer transitions 0/240 dead transitions. [2024-05-12 13:32:15,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 240 transitions, 2975 flow [2024-05-12 13:32:15,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:32:15,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:32:15,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 137 transitions. [2024-05-12 13:32:15,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4858156028368794 [2024-05-12 13:32:15,485 INFO L175 Difference]: Start difference. First operand has 170 places, 219 transitions, 2373 flow. Second operand 6 states and 137 transitions. [2024-05-12 13:32:15,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 240 transitions, 2975 flow [2024-05-12 13:32:15,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 240 transitions, 2905 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-05-12 13:32:15,654 INFO L231 Difference]: Finished difference. Result has 172 places, 222 transitions, 2448 flow [2024-05-12 13:32:15,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2303, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2448, PETRI_PLACES=172, PETRI_TRANSITIONS=222} [2024-05-12 13:32:15,654 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 119 predicate places. [2024-05-12 13:32:15,654 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 222 transitions, 2448 flow [2024-05-12 13:32:15,655 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 13:32:15,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:32:15,655 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 13:32:15,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-05-12 13:32:15,655 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:32:15,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:32:15,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1813606632, now seen corresponding path program 2 times [2024-05-12 13:32:15,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:32:15,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405070571] [2024-05-12 13:32:15,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:32:15,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:32:15,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:32:17,890 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 13:32:17,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:32:17,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405070571] [2024-05-12 13:32:17,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405070571] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:32:17,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:32:17,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:32:17,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155306331] [2024-05-12 13:32:17,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:32:17,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:32:17,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:32:17,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:32:17,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:32:18,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-05-12 13:32:18,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 222 transitions, 2448 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 13:32:18,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:32:18,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-05-12 13:32:18,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:32:19,799 INFO L124 PetriNetUnfolderBase]: 5218/8531 cut-off events. [2024-05-12 13:32:19,800 INFO L125 PetriNetUnfolderBase]: For 146210/146215 co-relation queries the response was YES. [2024-05-12 13:32:19,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50991 conditions, 8531 events. 5218/8531 cut-off events. For 146210/146215 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 57084 event pairs, 1909 based on Foata normal form. 20/8330 useless extension candidates. Maximal degree in co-relation 50911. Up to 7114 conditions per place. [2024-05-12 13:32:19,880 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 234 selfloop transitions, 42 changer transitions 0/285 dead transitions. [2024-05-12 13:32:19,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 285 transitions, 3341 flow [2024-05-12 13:32:19,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:32:19,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:32:19,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 241 transitions. [2024-05-12 13:32:19,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5127659574468085 [2024-05-12 13:32:19,882 INFO L175 Difference]: Start difference. First operand has 172 places, 222 transitions, 2448 flow. Second operand 10 states and 241 transitions. [2024-05-12 13:32:19,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 285 transitions, 3341 flow [2024-05-12 13:32:20,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 285 transitions, 3252 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-05-12 13:32:20,069 INFO L231 Difference]: Finished difference. Result has 178 places, 223 transitions, 2483 flow [2024-05-12 13:32:20,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2359, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2483, PETRI_PLACES=178, PETRI_TRANSITIONS=223} [2024-05-12 13:32:20,070 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 125 predicate places. [2024-05-12 13:32:20,070 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 223 transitions, 2483 flow [2024-05-12 13:32:20,070 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 13:32:20,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:32:20,070 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 13:32:20,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-05-12 13:32:20,070 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:32:20,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:32:20,071 INFO L85 PathProgramCache]: Analyzing trace with hash -2024291980, now seen corresponding path program 3 times [2024-05-12 13:32:20,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:32:20,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487865234] [2024-05-12 13:32:20,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:32:20,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:32:20,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:32:21,744 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 13:32:21,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:32:21,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487865234] [2024-05-12 13:32:21,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487865234] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:32:21,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:32:21,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:32:21,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837186377] [2024-05-12 13:32:21,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:32:21,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:32:21,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:32:21,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:32:21,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:32:21,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-05-12 13:32:21,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 223 transitions, 2483 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 13:32:21,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:32:21,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-05-12 13:32:21,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:32:23,674 INFO L124 PetriNetUnfolderBase]: 5303/8660 cut-off events. [2024-05-12 13:32:23,674 INFO L125 PetriNetUnfolderBase]: For 154303/154308 co-relation queries the response was YES. [2024-05-12 13:32:23,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51993 conditions, 8660 events. 5303/8660 cut-off events. For 154303/154308 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 57968 event pairs, 1940 based on Foata normal form. 20/8461 useless extension candidates. Maximal degree in co-relation 51912. Up to 7249 conditions per place. [2024-05-12 13:32:23,767 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 234 selfloop transitions, 43 changer transitions 0/286 dead transitions. [2024-05-12 13:32:23,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 286 transitions, 3380 flow [2024-05-12 13:32:23,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:32:23,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:32:23,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 241 transitions. [2024-05-12 13:32:23,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5127659574468085 [2024-05-12 13:32:23,768 INFO L175 Difference]: Start difference. First operand has 178 places, 223 transitions, 2483 flow. Second operand 10 states and 241 transitions. [2024-05-12 13:32:23,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 286 transitions, 3380 flow [2024-05-12 13:32:23,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 286 transitions, 3296 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-05-12 13:32:23,983 INFO L231 Difference]: Finished difference. Result has 181 places, 224 transitions, 2527 flow [2024-05-12 13:32:23,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2399, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2527, PETRI_PLACES=181, PETRI_TRANSITIONS=224} [2024-05-12 13:32:23,983 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 128 predicate places. [2024-05-12 13:32:23,983 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 224 transitions, 2527 flow [2024-05-12 13:32:23,983 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 13:32:23,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:32:23,984 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 13:32:23,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-05-12 13:32:23,984 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:32:23,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:32:23,984 INFO L85 PathProgramCache]: Analyzing trace with hash -647712536, now seen corresponding path program 1 times [2024-05-12 13:32:23,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:32:23,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711945199] [2024-05-12 13:32:23,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:32:23,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:32:23,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:32:24,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:32:24,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:32:24,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711945199] [2024-05-12 13:32:24,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711945199] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:32:24,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:32:24,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:32:24,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201990690] [2024-05-12 13:32:24,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:32:24,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:32:24,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:32:24,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:32:24,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:32:24,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-05-12 13:32:24,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 224 transitions, 2527 flow. Second operand has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:32:24,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:32:24,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-05-12 13:32:24,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:32:26,462 INFO L124 PetriNetUnfolderBase]: 5459/8808 cut-off events. [2024-05-12 13:32:26,462 INFO L125 PetriNetUnfolderBase]: For 161302/161302 co-relation queries the response was YES. [2024-05-12 13:32:26,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53222 conditions, 8808 events. 5459/8808 cut-off events. For 161302/161302 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 58407 event pairs, 1546 based on Foata normal form. 12/8629 useless extension candidates. Maximal degree in co-relation 53140. Up to 7489 conditions per place. [2024-05-12 13:32:26,554 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 202 selfloop transitions, 42 changer transitions 0/253 dead transitions. [2024-05-12 13:32:26,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 253 transitions, 3221 flow [2024-05-12 13:32:26,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:32:26,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:32:26,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2024-05-12 13:32:26,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2024-05-12 13:32:26,555 INFO L175 Difference]: Start difference. First operand has 181 places, 224 transitions, 2527 flow. Second operand 6 states and 144 transitions. [2024-05-12 13:32:26,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 253 transitions, 3221 flow [2024-05-12 13:32:26,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 253 transitions, 3122 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-05-12 13:32:26,783 INFO L231 Difference]: Finished difference. Result has 179 places, 225 transitions, 2540 flow [2024-05-12 13:32:26,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2428, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2540, PETRI_PLACES=179, PETRI_TRANSITIONS=225} [2024-05-12 13:32:26,784 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 126 predicate places. [2024-05-12 13:32:26,784 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 225 transitions, 2540 flow [2024-05-12 13:32:26,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:32:26,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:32:26,784 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 13:32:26,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-05-12 13:32:26,784 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:32:26,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:32:26,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1340083813, now seen corresponding path program 3 times [2024-05-12 13:32:26,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:32:26,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392954637] [2024-05-12 13:32:26,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:32:26,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:32:26,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:32:27,474 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 13:32:27,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:32:27,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392954637] [2024-05-12 13:32:27,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392954637] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:32:27,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:32:27,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:32:27,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606467284] [2024-05-12 13:32:27,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:32:27,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:32:27,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:32:27,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:32:27,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:32:27,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-05-12 13:32:27,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 225 transitions, 2540 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 13:32:27,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:32:27,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-05-12 13:32:27,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:32:28,928 INFO L124 PetriNetUnfolderBase]: 5573/9159 cut-off events. [2024-05-12 13:32:28,928 INFO L125 PetriNetUnfolderBase]: For 162965/162970 co-relation queries the response was YES. [2024-05-12 13:32:28,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54663 conditions, 9159 events. 5573/9159 cut-off events. For 162965/162970 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 62402 event pairs, 2025 based on Foata normal form. 8/8916 useless extension candidates. Maximal degree in co-relation 54580. Up to 7746 conditions per place. [2024-05-12 13:32:29,023 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 197 selfloop transitions, 53 changer transitions 0/259 dead transitions. [2024-05-12 13:32:29,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 259 transitions, 3306 flow [2024-05-12 13:32:29,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:32:29,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:32:29,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 164 transitions. [2024-05-12 13:32:29,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49848024316109424 [2024-05-12 13:32:29,024 INFO L175 Difference]: Start difference. First operand has 179 places, 225 transitions, 2540 flow. Second operand 7 states and 164 transitions. [2024-05-12 13:32:29,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 259 transitions, 3306 flow [2024-05-12 13:32:29,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 259 transitions, 3230 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-05-12 13:32:29,233 INFO L231 Difference]: Finished difference. Result has 183 places, 231 transitions, 2741 flow [2024-05-12 13:32:29,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2464, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2741, PETRI_PLACES=183, PETRI_TRANSITIONS=231} [2024-05-12 13:32:29,233 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 130 predicate places. [2024-05-12 13:32:29,234 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 231 transitions, 2741 flow [2024-05-12 13:32:29,234 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 13:32:29,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:32:29,234 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 13:32:29,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-05-12 13:32:29,234 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:32:29,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:32:29,234 INFO L85 PathProgramCache]: Analyzing trace with hash 989586247, now seen corresponding path program 4 times [2024-05-12 13:32:29,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:32:29,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863475509] [2024-05-12 13:32:29,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:32:29,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:32:29,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:32:29,961 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 13:32:29,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:32:29,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863475509] [2024-05-12 13:32:29,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863475509] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:32:29,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:32:29,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:32:29,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501370541] [2024-05-12 13:32:29,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:32:29,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:32:29,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:32:29,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:32:29,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:32:30,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-05-12 13:32:30,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 231 transitions, 2741 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 13:32:30,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:32:30,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-05-12 13:32:30,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:32:31,555 INFO L124 PetriNetUnfolderBase]: 5641/9273 cut-off events. [2024-05-12 13:32:31,555 INFO L125 PetriNetUnfolderBase]: For 175318/175323 co-relation queries the response was YES. [2024-05-12 13:32:31,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56795 conditions, 9273 events. 5641/9273 cut-off events. For 175318/175323 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 63251 event pairs, 2048 based on Foata normal form. 8/9024 useless extension candidates. Maximal degree in co-relation 56710. Up to 8022 conditions per place. [2024-05-12 13:32:31,643 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 230 selfloop transitions, 28 changer transitions 0/267 dead transitions. [2024-05-12 13:32:31,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 267 transitions, 3503 flow [2024-05-12 13:32:31,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:32:31,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:32:31,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 165 transitions. [2024-05-12 13:32:31,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5015197568389058 [2024-05-12 13:32:31,645 INFO L175 Difference]: Start difference. First operand has 183 places, 231 transitions, 2741 flow. Second operand 7 states and 165 transitions. [2024-05-12 13:32:31,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 267 transitions, 3503 flow [2024-05-12 13:32:31,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 267 transitions, 3376 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-05-12 13:32:31,892 INFO L231 Difference]: Finished difference. Result has 184 places, 234 transitions, 2748 flow [2024-05-12 13:32:31,892 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2614, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2748, PETRI_PLACES=184, PETRI_TRANSITIONS=234} [2024-05-12 13:32:31,893 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 131 predicate places. [2024-05-12 13:32:31,893 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 234 transitions, 2748 flow [2024-05-12 13:32:31,893 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 13:32:31,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:32:31,893 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 13:32:31,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-05-12 13:32:31,893 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:32:31,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:32:31,894 INFO L85 PathProgramCache]: Analyzing trace with hash -562672855, now seen corresponding path program 5 times [2024-05-12 13:32:31,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:32:31,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210427160] [2024-05-12 13:32:31,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:32:31,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:32:31,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:32:32,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:32:32,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:32:32,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210427160] [2024-05-12 13:32:32,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210427160] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:32:32,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:32:32,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:32:32,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546562143] [2024-05-12 13:32:32,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:32:32,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:32:32,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:32:32,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:32:32,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:32:32,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-05-12 13:32:32,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 234 transitions, 2748 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 13:32:32,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:32:32,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-05-12 13:32:32,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:32:34,116 INFO L124 PetriNetUnfolderBase]: 5774/9466 cut-off events. [2024-05-12 13:32:34,116 INFO L125 PetriNetUnfolderBase]: For 182303/182308 co-relation queries the response was YES. [2024-05-12 13:32:34,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58595 conditions, 9466 events. 5774/9466 cut-off events. For 182303/182308 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 64648 event pairs, 2057 based on Foata normal form. 8/9219 useless extension candidates. Maximal degree in co-relation 58511. Up to 7797 conditions per place. [2024-05-12 13:32:34,202 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 205 selfloop transitions, 63 changer transitions 0/277 dead transitions. [2024-05-12 13:32:34,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 277 transitions, 3722 flow [2024-05-12 13:32:34,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:32:34,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:32:34,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2024-05-12 13:32:34,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2024-05-12 13:32:34,203 INFO L175 Difference]: Start difference. First operand has 184 places, 234 transitions, 2748 flow. Second operand 7 states and 168 transitions. [2024-05-12 13:32:34,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 277 transitions, 3722 flow [2024-05-12 13:32:34,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 277 transitions, 3546 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-05-12 13:32:34,456 INFO L231 Difference]: Finished difference. Result has 185 places, 244 transitions, 2929 flow [2024-05-12 13:32:34,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2572, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2929, PETRI_PLACES=185, PETRI_TRANSITIONS=244} [2024-05-12 13:32:34,456 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 132 predicate places. [2024-05-12 13:32:34,457 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 244 transitions, 2929 flow [2024-05-12 13:32:34,457 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 13:32:34,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:32:34,457 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 13:32:34,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-05-12 13:32:34,457 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:32:34,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:32:34,458 INFO L85 PathProgramCache]: Analyzing trace with hash -505083193, now seen corresponding path program 6 times [2024-05-12 13:32:34,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:32:34,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268961922] [2024-05-12 13:32:34,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:32:34,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:32:34,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:32:35,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:32:35,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:32:35,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268961922] [2024-05-12 13:32:35,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268961922] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:32:35,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:32:35,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:32:35,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842506077] [2024-05-12 13:32:35,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:32:35,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:32:35,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:32:35,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:32:35,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:32:35,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-05-12 13:32:35,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 244 transitions, 2929 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 13:32:35,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:32:35,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-05-12 13:32:35,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:32:36,803 INFO L124 PetriNetUnfolderBase]: 5842/9533 cut-off events. [2024-05-12 13:32:36,803 INFO L125 PetriNetUnfolderBase]: For 198983/198988 co-relation queries the response was YES. [2024-05-12 13:32:36,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61148 conditions, 9533 events. 5842/9533 cut-off events. For 198983/198988 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 65046 event pairs, 2255 based on Foata normal form. 8/9320 useless extension candidates. Maximal degree in co-relation 61063. Up to 8204 conditions per place. [2024-05-12 13:32:36,902 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 220 selfloop transitions, 44 changer transitions 0/273 dead transitions. [2024-05-12 13:32:36,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 273 transitions, 3751 flow [2024-05-12 13:32:36,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:32:36,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:32:36,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2024-05-12 13:32:36,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48632218844984804 [2024-05-12 13:32:36,904 INFO L175 Difference]: Start difference. First operand has 185 places, 244 transitions, 2929 flow. Second operand 7 states and 160 transitions. [2024-05-12 13:32:36,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 273 transitions, 3751 flow [2024-05-12 13:32:37,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 273 transitions, 3641 flow, removed 44 selfloop flow, removed 3 redundant places. [2024-05-12 13:32:37,182 INFO L231 Difference]: Finished difference. Result has 189 places, 247 transitions, 2993 flow [2024-05-12 13:32:37,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2825, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2993, PETRI_PLACES=189, PETRI_TRANSITIONS=247} [2024-05-12 13:32:37,183 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 136 predicate places. [2024-05-12 13:32:37,183 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 247 transitions, 2993 flow [2024-05-12 13:32:37,183 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 13:32:37,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:32:37,184 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 13:32:37,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-05-12 13:32:37,184 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:32:37,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:32:37,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1213463293, now seen corresponding path program 7 times [2024-05-12 13:32:37,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:32:37,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973460541] [2024-05-12 13:32:37,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:32:37,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:32:37,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:32:37,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:32:37,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:32:37,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973460541] [2024-05-12 13:32:37,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973460541] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:32:37,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:32:37,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:32:37,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314902188] [2024-05-12 13:32:37,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:32:37,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:32:37,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:32:37,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:32:37,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:32:37,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-05-12 13:32:37,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 247 transitions, 2993 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 13:32:37,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:32:37,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-05-12 13:32:37,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:32:39,530 INFO L124 PetriNetUnfolderBase]: 5830/9521 cut-off events. [2024-05-12 13:32:39,531 INFO L125 PetriNetUnfolderBase]: For 188076/188079 co-relation queries the response was YES. [2024-05-12 13:32:39,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59972 conditions, 9521 events. 5830/9521 cut-off events. For 188076/188079 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 65026 event pairs, 2279 based on Foata normal form. 6/9302 useless extension candidates. Maximal degree in co-relation 59885. Up to 8370 conditions per place. [2024-05-12 13:32:39,660 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 224 selfloop transitions, 36 changer transitions 0/269 dead transitions. [2024-05-12 13:32:39,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 269 transitions, 3629 flow [2024-05-12 13:32:39,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:32:39,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:32:39,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 169 transitions. [2024-05-12 13:32:39,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.449468085106383 [2024-05-12 13:32:39,662 INFO L175 Difference]: Start difference. First operand has 189 places, 247 transitions, 2993 flow. Second operand 8 states and 169 transitions. [2024-05-12 13:32:39,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 269 transitions, 3629 flow [2024-05-12 13:32:39,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 269 transitions, 3424 flow, removed 48 selfloop flow, removed 5 redundant places. [2024-05-12 13:32:39,978 INFO L231 Difference]: Finished difference. Result has 192 places, 248 transitions, 2880 flow [2024-05-12 13:32:39,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2791, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2880, PETRI_PLACES=192, PETRI_TRANSITIONS=248} [2024-05-12 13:32:39,978 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 139 predicate places. [2024-05-12 13:32:39,978 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 248 transitions, 2880 flow [2024-05-12 13:32:39,979 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 13:32:39,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:32:39,979 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 13:32:39,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-05-12 13:32:39,979 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:32:39,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:32:39,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1213473182, now seen corresponding path program 2 times [2024-05-12 13:32:39,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:32:39,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851141803] [2024-05-12 13:32:39,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:32:39,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:32:39,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:32:40,879 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 13:32:40,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:32:40,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851141803] [2024-05-12 13:32:40,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851141803] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:32:40,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:32:40,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:32:40,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970118389] [2024-05-12 13:32:40,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:32:40,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:32:40,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:32:40,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:32:40,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:32:40,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-05-12 13:32:40,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 248 transitions, 2880 flow. Second operand has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:32:40,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:32:40,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-05-12 13:32:40,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:32:42,540 INFO L124 PetriNetUnfolderBase]: 5986/9716 cut-off events. [2024-05-12 13:32:42,540 INFO L125 PetriNetUnfolderBase]: For 192737/192737 co-relation queries the response was YES. [2024-05-12 13:32:42,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60748 conditions, 9716 events. 5986/9716 cut-off events. For 192737/192737 co-relation queries the response was YES. Maximal size of possible extension queue 466. Compared 66002 event pairs, 1670 based on Foata normal form. 12/9502 useless extension candidates. Maximal degree in co-relation 60661. Up to 8227 conditions per place. [2024-05-12 13:32:42,657 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 231 selfloop transitions, 44 changer transitions 0/284 dead transitions. [2024-05-12 13:32:42,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 284 transitions, 3716 flow [2024-05-12 13:32:42,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:32:42,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:32:42,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 165 transitions. [2024-05-12 13:32:42,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5015197568389058 [2024-05-12 13:32:42,659 INFO L175 Difference]: Start difference. First operand has 192 places, 248 transitions, 2880 flow. Second operand 7 states and 165 transitions. [2024-05-12 13:32:42,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 284 transitions, 3716 flow [2024-05-12 13:32:42,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 284 transitions, 3596 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-05-12 13:32:42,930 INFO L231 Difference]: Finished difference. Result has 194 places, 249 transitions, 2871 flow [2024-05-12 13:32:42,930 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2760, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2871, PETRI_PLACES=194, PETRI_TRANSITIONS=249} [2024-05-12 13:32:42,932 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 141 predicate places. [2024-05-12 13:32:42,932 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 249 transitions, 2871 flow [2024-05-12 13:32:42,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:32:42,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:32:42,932 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 13:32:42,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-05-12 13:32:42,932 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:32:42,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:32:42,933 INFO L85 PathProgramCache]: Analyzing trace with hash -297562746, now seen corresponding path program 3 times [2024-05-12 13:32:42,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:32:42,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409446713] [2024-05-12 13:32:42,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:32:42,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:32:42,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:32:43,899 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 13:32:43,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:32:43,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409446713] [2024-05-12 13:32:43,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409446713] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:32:43,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:32:43,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:32:43,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918881351] [2024-05-12 13:32:43,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:32:43,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:32:43,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:32:43,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:32:43,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:32:43,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-05-12 13:32:43,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 249 transitions, 2871 flow. Second operand has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:32:43,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:32:43,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-05-12 13:32:43,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:32:45,605 INFO L124 PetriNetUnfolderBase]: 6020/9718 cut-off events. [2024-05-12 13:32:45,619 INFO L125 PetriNetUnfolderBase]: For 193904/193904 co-relation queries the response was YES. [2024-05-12 13:32:45,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61103 conditions, 9718 events. 6020/9718 cut-off events. For 193904/193904 co-relation queries the response was YES. Maximal size of possible extension queue 466. Compared 65418 event pairs, 1622 based on Foata normal form. 8/9516 useless extension candidates. Maximal degree in co-relation 61014. Up to 7927 conditions per place. [2024-05-12 13:32:45,747 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 229 selfloop transitions, 50 changer transitions 0/288 dead transitions. [2024-05-12 13:32:45,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 288 transitions, 3759 flow [2024-05-12 13:32:45,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:32:45,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:32:45,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 181 transitions. [2024-05-12 13:32:45,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48138297872340424 [2024-05-12 13:32:45,758 INFO L175 Difference]: Start difference. First operand has 194 places, 249 transitions, 2871 flow. Second operand 8 states and 181 transitions. [2024-05-12 13:32:45,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 288 transitions, 3759 flow [2024-05-12 13:32:46,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 288 transitions, 3666 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-05-12 13:32:46,075 INFO L231 Difference]: Finished difference. Result has 197 places, 251 transitions, 2920 flow [2024-05-12 13:32:46,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2780, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2920, PETRI_PLACES=197, PETRI_TRANSITIONS=251} [2024-05-12 13:32:46,075 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 144 predicate places. [2024-05-12 13:32:46,075 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 251 transitions, 2920 flow [2024-05-12 13:32:46,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:32:46,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:32:46,076 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 13:32:46,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-05-12 13:32:46,076 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:32:46,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:32:46,076 INFO L85 PathProgramCache]: Analyzing trace with hash 985279045, now seen corresponding path program 1 times [2024-05-12 13:32:46,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:32:46,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216313652] [2024-05-12 13:32:46,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:32:46,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:32:46,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:32:47,208 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 13:32:47,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:32:47,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216313652] [2024-05-12 13:32:47,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216313652] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:32:47,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:32:47,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:32:47,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225294674] [2024-05-12 13:32:47,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:32:47,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:32:47,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:32:47,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:32:47,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:32:47,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-05-12 13:32:47,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 251 transitions, 2920 flow. Second operand has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:32:47,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:32:47,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-05-12 13:32:47,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:32:48,948 INFO L124 PetriNetUnfolderBase]: 6122/10083 cut-off events. [2024-05-12 13:32:48,948 INFO L125 PetriNetUnfolderBase]: For 202560/202563 co-relation queries the response was YES. [2024-05-12 13:32:49,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62600 conditions, 10083 events. 6122/10083 cut-off events. For 202560/202563 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 69952 event pairs, 2161 based on Foata normal form. 8/9806 useless extension candidates. Maximal degree in co-relation 62510. Up to 8532 conditions per place. [2024-05-12 13:32:49,075 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 247 selfloop transitions, 40 changer transitions 0/296 dead transitions. [2024-05-12 13:32:49,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 296 transitions, 3796 flow [2024-05-12 13:32:49,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:32:49,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:32:49,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-05-12 13:32:49,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2024-05-12 13:32:49,077 INFO L175 Difference]: Start difference. First operand has 197 places, 251 transitions, 2920 flow. Second operand 8 states and 192 transitions. [2024-05-12 13:32:49,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 296 transitions, 3796 flow [2024-05-12 13:32:49,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 296 transitions, 3716 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-05-12 13:32:49,436 INFO L231 Difference]: Finished difference. Result has 201 places, 256 transitions, 3032 flow [2024-05-12 13:32:49,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2840, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3032, PETRI_PLACES=201, PETRI_TRANSITIONS=256} [2024-05-12 13:32:49,437 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 148 predicate places. [2024-05-12 13:32:49,437 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 256 transitions, 3032 flow [2024-05-12 13:32:49,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:32:49,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:32:49,437 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 13:32:49,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-05-12 13:32:49,438 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:32:49,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:32:49,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1831434937, now seen corresponding path program 2 times [2024-05-12 13:32:49,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:32:49,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244778481] [2024-05-12 13:32:49,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:32:49,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:32:49,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:32:50,356 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 13:32:50,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:32:50,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244778481] [2024-05-12 13:32:50,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244778481] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:32:50,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:32:50,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:32:50,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100393233] [2024-05-12 13:32:50,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:32:50,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:32:50,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:32:50,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:32:50,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:32:50,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-05-12 13:32:50,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 256 transitions, 3032 flow. Second operand has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:32:50,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:32:50,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-05-12 13:32:50,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:32:52,112 INFO L124 PetriNetUnfolderBase]: 6280/10380 cut-off events. [2024-05-12 13:32:52,112 INFO L125 PetriNetUnfolderBase]: For 222701/222701 co-relation queries the response was YES. [2024-05-12 13:32:52,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65635 conditions, 10380 events. 6280/10380 cut-off events. For 222701/222701 co-relation queries the response was YES. Maximal size of possible extension queue 470. Compared 72647 event pairs, 2782 based on Foata normal form. 4/10100 useless extension candidates. Maximal degree in co-relation 65543. Up to 8723 conditions per place. [2024-05-12 13:32:52,241 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 263 selfloop transitions, 41 changer transitions 0/313 dead transitions. [2024-05-12 13:32:52,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 313 transitions, 4261 flow [2024-05-12 13:32:52,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:32:52,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:32:52,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 193 transitions. [2024-05-12 13:32:52,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5132978723404256 [2024-05-12 13:32:52,243 INFO L175 Difference]: Start difference. First operand has 201 places, 256 transitions, 3032 flow. Second operand 8 states and 193 transitions. [2024-05-12 13:32:52,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 313 transitions, 4261 flow [2024-05-12 13:32:52,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 313 transitions, 4076 flow, removed 53 selfloop flow, removed 6 redundant places. [2024-05-12 13:32:52,634 INFO L231 Difference]: Finished difference. Result has 205 places, 269 transitions, 3205 flow [2024-05-12 13:32:52,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2882, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3205, PETRI_PLACES=205, PETRI_TRANSITIONS=269} [2024-05-12 13:32:52,634 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 152 predicate places. [2024-05-12 13:32:52,635 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 269 transitions, 3205 flow [2024-05-12 13:32:52,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:32:52,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:32:52,635 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 13:32:52,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-05-12 13:32:52,635 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:32:52,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:32:52,636 INFO L85 PathProgramCache]: Analyzing trace with hash 990047589, now seen corresponding path program 1 times [2024-05-12 13:32:52,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:32:52,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255114142] [2024-05-12 13:32:52,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:32:52,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:32:52,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:32:53,442 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 13:32:53,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:32:53,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255114142] [2024-05-12 13:32:53,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255114142] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:32:53,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:32:53,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:32:53,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272636006] [2024-05-12 13:32:53,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:32:53,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:32:53,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:32:53,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:32:53,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:32:53,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-05-12 13:32:53,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 269 transitions, 3205 flow. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:32:53,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:32:53,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-05-12 13:32:53,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:32:55,118 INFO L124 PetriNetUnfolderBase]: 6308/10463 cut-off events. [2024-05-12 13:32:55,118 INFO L125 PetriNetUnfolderBase]: For 230078/230078 co-relation queries the response was YES. [2024-05-12 13:32:55,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66531 conditions, 10463 events. 6308/10463 cut-off events. For 230078/230078 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 73670 event pairs, 2811 based on Foata normal form. 2/10165 useless extension candidates. Maximal degree in co-relation 66436. Up to 9061 conditions per place. [2024-05-12 13:32:55,229 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 269 selfloop transitions, 22 changer transitions 0/300 dead transitions. [2024-05-12 13:32:55,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 300 transitions, 3965 flow [2024-05-12 13:32:55,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:32:55,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:32:55,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 173 transitions. [2024-05-12 13:32:55,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4601063829787234 [2024-05-12 13:32:55,231 INFO L175 Difference]: Start difference. First operand has 205 places, 269 transitions, 3205 flow. Second operand 8 states and 173 transitions. [2024-05-12 13:32:55,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 300 transitions, 3965 flow [2024-05-12 13:32:55,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 300 transitions, 3882 flow, removed 31 selfloop flow, removed 3 redundant places. [2024-05-12 13:32:55,604 INFO L231 Difference]: Finished difference. Result has 210 places, 271 transitions, 3211 flow [2024-05-12 13:32:55,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3122, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3211, PETRI_PLACES=210, PETRI_TRANSITIONS=271} [2024-05-12 13:32:55,605 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 157 predicate places. [2024-05-12 13:32:55,605 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 271 transitions, 3211 flow [2024-05-12 13:32:55,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:32:55,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:32:55,606 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 13:32:55,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-05-12 13:32:55,606 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:32:55,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:32:55,606 INFO L85 PathProgramCache]: Analyzing trace with hash 990040645, now seen corresponding path program 3 times [2024-05-12 13:32:55,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:32:55,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625528993] [2024-05-12 13:32:55,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:32:55,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:32:55,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:32:56,595 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 13:32:56,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:32:56,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625528993] [2024-05-12 13:32:56,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625528993] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:32:56,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:32:56,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:32:56,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892231346] [2024-05-12 13:32:56,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:32:56,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:32:56,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:32:56,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:32:56,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:32:56,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-05-12 13:32:56,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 271 transitions, 3211 flow. Second operand has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:32:56,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:32:56,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-05-12 13:32:56,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:32:58,366 INFO L124 PetriNetUnfolderBase]: 6376/10555 cut-off events. [2024-05-12 13:32:58,366 INFO L125 PetriNetUnfolderBase]: For 237184/237184 co-relation queries the response was YES. [2024-05-12 13:32:58,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67305 conditions, 10555 events. 6376/10555 cut-off events. For 237184/237184 co-relation queries the response was YES. Maximal size of possible extension queue 478. Compared 74197 event pairs, 2812 based on Foata normal form. 4/10259 useless extension candidates. Maximal degree in co-relation 67208. Up to 9091 conditions per place. [2024-05-12 13:32:58,480 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 276 selfloop transitions, 25 changer transitions 0/310 dead transitions. [2024-05-12 13:32:58,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 310 transitions, 4062 flow [2024-05-12 13:32:58,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:32:58,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:32:58,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 183 transitions. [2024-05-12 13:32:58,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4867021276595745 [2024-05-12 13:32:58,482 INFO L175 Difference]: Start difference. First operand has 210 places, 271 transitions, 3211 flow. Second operand 8 states and 183 transitions. [2024-05-12 13:32:58,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 310 transitions, 4062 flow [2024-05-12 13:32:58,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 310 transitions, 3997 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-05-12 13:32:58,921 INFO L231 Difference]: Finished difference. Result has 213 places, 274 transitions, 3255 flow [2024-05-12 13:32:58,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3146, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3255, PETRI_PLACES=213, PETRI_TRANSITIONS=274} [2024-05-12 13:32:58,922 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 160 predicate places. [2024-05-12 13:32:58,922 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 274 transitions, 3255 flow [2024-05-12 13:32:58,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:32:58,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:32:58,922 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 13:32:58,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-05-12 13:32:58,922 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:32:58,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:32:58,923 INFO L85 PathProgramCache]: Analyzing trace with hash 893807095, now seen corresponding path program 2 times [2024-05-12 13:32:58,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:32:58,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501350449] [2024-05-12 13:32:58,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:32:58,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:32:58,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:32:59,706 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 13:32:59,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:32:59,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501350449] [2024-05-12 13:32:59,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501350449] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:32:59,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:32:59,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:32:59,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537315154] [2024-05-12 13:32:59,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:32:59,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:32:59,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:32:59,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:32:59,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:32:59,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-05-12 13:32:59,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 274 transitions, 3255 flow. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:32:59,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:32:59,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-05-12 13:32:59,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:33:01,558 INFO L124 PetriNetUnfolderBase]: 6404/10438 cut-off events. [2024-05-12 13:33:01,558 INFO L125 PetriNetUnfolderBase]: For 241194/241194 co-relation queries the response was YES. [2024-05-12 13:33:01,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67593 conditions, 10438 events. 6404/10438 cut-off events. For 241194/241194 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 72191 event pairs, 2942 based on Foata normal form. 2/10189 useless extension candidates. Maximal degree in co-relation 67495. Up to 9230 conditions per place. [2024-05-12 13:33:01,678 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 274 selfloop transitions, 16 changer transitions 0/299 dead transitions. [2024-05-12 13:33:01,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 299 transitions, 3979 flow [2024-05-12 13:33:01,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:33:01,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:33:01,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 153 transitions. [2024-05-12 13:33:01,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46504559270516715 [2024-05-12 13:33:01,680 INFO L175 Difference]: Start difference. First operand has 213 places, 274 transitions, 3255 flow. Second operand 7 states and 153 transitions. [2024-05-12 13:33:01,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 299 transitions, 3979 flow [2024-05-12 13:33:02,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 299 transitions, 3905 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-05-12 13:33:02,054 INFO L231 Difference]: Finished difference. Result has 214 places, 276 transitions, 3262 flow [2024-05-12 13:33:02,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3181, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3262, PETRI_PLACES=214, PETRI_TRANSITIONS=276} [2024-05-12 13:33:02,055 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 161 predicate places. [2024-05-12 13:33:02,056 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 276 transitions, 3262 flow [2024-05-12 13:33:02,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:33:02,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:33:02,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:33:02,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-05-12 13:33:02,056 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:33:02,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:33:02,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1228716285, now seen corresponding path program 3 times [2024-05-12 13:33:02,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:33:02,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102776111] [2024-05-12 13:33:02,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:33:02,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:33:02,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:33:02,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:33:02,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:33:02,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102776111] [2024-05-12 13:33:02,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102776111] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:33:02,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:33:02,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:33:02,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430463351] [2024-05-12 13:33:02,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:33:02,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:33:02,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:33:02,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:33:02,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:33:03,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-05-12 13:33:03,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 276 transitions, 3262 flow. Second operand has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:33:03,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:33:03,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-05-12 13:33:03,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:33:04,904 INFO L124 PetriNetUnfolderBase]: 6440/10514 cut-off events. [2024-05-12 13:33:04,904 INFO L125 PetriNetUnfolderBase]: For 249433/249433 co-relation queries the response was YES. [2024-05-12 13:33:04,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68170 conditions, 10514 events. 6440/10514 cut-off events. For 249433/249433 co-relation queries the response was YES. Maximal size of possible extension queue 493. Compared 72823 event pairs, 2909 based on Foata normal form. 2/10261 useless extension candidates. Maximal degree in co-relation 68071. Up to 9259 conditions per place. [2024-05-12 13:33:05,032 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 279 selfloop transitions, 19 changer transitions 0/307 dead transitions. [2024-05-12 13:33:05,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 307 transitions, 4042 flow [2024-05-12 13:33:05,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:33:05,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:33:05,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 155 transitions. [2024-05-12 13:33:05,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47112462006079026 [2024-05-12 13:33:05,034 INFO L175 Difference]: Start difference. First operand has 214 places, 276 transitions, 3262 flow. Second operand 7 states and 155 transitions. [2024-05-12 13:33:05,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 307 transitions, 4042 flow [2024-05-12 13:33:05,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 307 transitions, 3977 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-05-12 13:33:05,390 INFO L231 Difference]: Finished difference. Result has 217 places, 281 transitions, 3328 flow [2024-05-12 13:33:05,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3197, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3328, PETRI_PLACES=217, PETRI_TRANSITIONS=281} [2024-05-12 13:33:05,391 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 164 predicate places. [2024-05-12 13:33:05,391 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 281 transitions, 3328 flow [2024-05-12 13:33:05,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:33:05,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:33:05,392 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 13:33:05,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-05-12 13:33:05,392 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:33:05,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:33:05,392 INFO L85 PathProgramCache]: Analyzing trace with hash -306819811, now seen corresponding path program 1 times [2024-05-12 13:33:05,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:33:05,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774043128] [2024-05-12 13:33:05,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:33:05,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:33:05,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:33:06,400 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 13:33:06,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:33:06,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774043128] [2024-05-12 13:33:06,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774043128] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:33:06,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:33:06,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:33:06,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47985157] [2024-05-12 13:33:06,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:33:06,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:33:06,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:33:06,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:33:06,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:33:06,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-05-12 13:33:06,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 281 transitions, 3328 flow. Second operand has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:33:06,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:33:06,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-05-12 13:33:06,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:33:08,546 INFO L124 PetriNetUnfolderBase]: 6447/10509 cut-off events. [2024-05-12 13:33:08,546 INFO L125 PetriNetUnfolderBase]: For 257917/257917 co-relation queries the response was YES. [2024-05-12 13:33:08,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68846 conditions, 10509 events. 6447/10509 cut-off events. For 257917/257917 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 72663 event pairs, 2923 based on Foata normal form. 1/10257 useless extension candidates. Maximal degree in co-relation 68745. Up to 9259 conditions per place. [2024-05-12 13:33:08,672 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 279 selfloop transitions, 26 changer transitions 0/314 dead transitions. [2024-05-12 13:33:08,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 314 transitions, 4187 flow [2024-05-12 13:33:08,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:33:08,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:33:08,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 155 transitions. [2024-05-12 13:33:08,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47112462006079026 [2024-05-12 13:33:08,674 INFO L175 Difference]: Start difference. First operand has 217 places, 281 transitions, 3328 flow. Second operand 7 states and 155 transitions. [2024-05-12 13:33:08,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 314 transitions, 4187 flow [2024-05-12 13:33:09,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 314 transitions, 4097 flow, removed 27 selfloop flow, removed 4 redundant places. [2024-05-12 13:33:09,103 INFO L231 Difference]: Finished difference. Result has 222 places, 291 transitions, 3469 flow [2024-05-12 13:33:09,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3243, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3469, PETRI_PLACES=222, PETRI_TRANSITIONS=291} [2024-05-12 13:33:09,103 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 169 predicate places. [2024-05-12 13:33:09,104 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 291 transitions, 3469 flow [2024-05-12 13:33:09,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:33:09,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:33:09,104 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 13:33:09,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-05-12 13:33:09,104 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:33:09,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:33:09,105 INFO L85 PathProgramCache]: Analyzing trace with hash -307057147, now seen corresponding path program 4 times [2024-05-12 13:33:09,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:33:09,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932868405] [2024-05-12 13:33:09,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:33:09,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:33:09,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:33:10,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:33:10,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:33:10,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932868405] [2024-05-12 13:33:10,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932868405] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:33:10,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:33:10,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:33:10,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084004891] [2024-05-12 13:33:10,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:33:10,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:33:10,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:33:10,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:33:10,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:33:10,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-05-12 13:33:10,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 291 transitions, 3469 flow. Second operand has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:33:10,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:33:10,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-05-12 13:33:10,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:33:12,163 INFO L124 PetriNetUnfolderBase]: 6441/10488 cut-off events. [2024-05-12 13:33:12,163 INFO L125 PetriNetUnfolderBase]: For 268057/268057 co-relation queries the response was YES. [2024-05-12 13:33:12,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69748 conditions, 10488 events. 6441/10488 cut-off events. For 268057/268057 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 72400 event pairs, 2914 based on Foata normal form. 2/10241 useless extension candidates. Maximal degree in co-relation 69644. Up to 9250 conditions per place. [2024-05-12 13:33:12,270 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 294 selfloop transitions, 20 changer transitions 0/323 dead transitions. [2024-05-12 13:33:12,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 323 transitions, 4311 flow [2024-05-12 13:33:12,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:33:12,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:33:12,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 175 transitions. [2024-05-12 13:33:12,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4654255319148936 [2024-05-12 13:33:12,271 INFO L175 Difference]: Start difference. First operand has 222 places, 291 transitions, 3469 flow. Second operand 8 states and 175 transitions. [2024-05-12 13:33:12,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 323 transitions, 4311 flow [2024-05-12 13:33:12,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 323 transitions, 4231 flow, removed 26 selfloop flow, removed 3 redundant places. [2024-05-12 13:33:12,718 INFO L231 Difference]: Finished difference. Result has 227 places, 294 transitions, 3493 flow [2024-05-12 13:33:12,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3389, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3493, PETRI_PLACES=227, PETRI_TRANSITIONS=294} [2024-05-12 13:33:12,719 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 174 predicate places. [2024-05-12 13:33:12,719 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 294 transitions, 3493 flow [2024-05-12 13:33:12,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:33:12,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:33:12,719 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 13:33:12,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-05-12 13:33:12,720 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:33:12,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:33:12,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1228390785, now seen corresponding path program 4 times [2024-05-12 13:33:12,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:33:12,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186101429] [2024-05-12 13:33:12,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:33:12,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:33:12,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:33:13,556 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 13:33:13,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:33:13,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186101429] [2024-05-12 13:33:13,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186101429] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:33:13,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:33:13,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:33:13,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929789796] [2024-05-12 13:33:13,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:33:13,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:33:13,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:33:13,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:33:13,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:33:13,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-05-12 13:33:13,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 294 transitions, 3493 flow. Second operand has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:33:13,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:33:13,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-05-12 13:33:13,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:33:15,314 INFO L124 PetriNetUnfolderBase]: 6444/10485 cut-off events. [2024-05-12 13:33:15,314 INFO L125 PetriNetUnfolderBase]: For 273347/273347 co-relation queries the response was YES. [2024-05-12 13:33:15,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70047 conditions, 10485 events. 6444/10485 cut-off events. For 273347/273347 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 72374 event pairs, 2929 based on Foata normal form. 2/10240 useless extension candidates. Maximal degree in co-relation 69942. Up to 9251 conditions per place. [2024-05-12 13:33:15,449 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 286 selfloop transitions, 24 changer transitions 0/319 dead transitions. [2024-05-12 13:33:15,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 319 transitions, 4275 flow [2024-05-12 13:33:15,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:33:15,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:33:15,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 154 transitions. [2024-05-12 13:33:15,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46808510638297873 [2024-05-12 13:33:15,450 INFO L175 Difference]: Start difference. First operand has 227 places, 294 transitions, 3493 flow. Second operand 7 states and 154 transitions. [2024-05-12 13:33:15,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 319 transitions, 4275 flow [2024-05-12 13:33:15,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 319 transitions, 4199 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-05-12 13:33:15,946 INFO L231 Difference]: Finished difference. Result has 228 places, 296 transitions, 3527 flow [2024-05-12 13:33:15,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3417, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3527, PETRI_PLACES=228, PETRI_TRANSITIONS=296} [2024-05-12 13:33:15,947 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 175 predicate places. [2024-05-12 13:33:15,947 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 296 transitions, 3527 flow [2024-05-12 13:33:15,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:33:15,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:33:15,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:33:15,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-05-12 13:33:15,947 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:33:15,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:33:15,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1449450541, now seen corresponding path program 1 times [2024-05-12 13:33:15,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:33:15,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531636098] [2024-05-12 13:33:15,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:33:15,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:33:15,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:33:17,488 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 13:33:17,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:33:17,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531636098] [2024-05-12 13:33:17,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531636098] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:33:17,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:33:17,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:33:17,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755857173] [2024-05-12 13:33:17,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:33:17,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:33:17,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:33:17,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:33:17,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:33:17,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-05-12 13:33:17,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 296 transitions, 3527 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 13:33:17,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:33:17,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-05-12 13:33:17,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:33:19,613 INFO L124 PetriNetUnfolderBase]: 6537/10582 cut-off events. [2024-05-12 13:33:19,613 INFO L125 PetriNetUnfolderBase]: For 287210/287210 co-relation queries the response was YES. [2024-05-12 13:33:19,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71271 conditions, 10582 events. 6537/10582 cut-off events. For 287210/287210 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 72500 event pairs, 1593 based on Foata normal form. 12/10319 useless extension candidates. Maximal degree in co-relation 71165. Up to 9014 conditions per place. [2024-05-12 13:33:19,753 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 305 selfloop transitions, 40 changer transitions 0/354 dead transitions. [2024-05-12 13:33:19,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 354 transitions, 4539 flow [2024-05-12 13:33:19,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:33:19,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:33:19,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 214 transitions. [2024-05-12 13:33:19,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5059101654846335 [2024-05-12 13:33:19,754 INFO L175 Difference]: Start difference. First operand has 228 places, 296 transitions, 3527 flow. Second operand 9 states and 214 transitions. [2024-05-12 13:33:19,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 354 transitions, 4539 flow [2024-05-12 13:33:20,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 354 transitions, 4449 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-05-12 13:33:20,286 INFO L231 Difference]: Finished difference. Result has 233 places, 299 transitions, 3574 flow [2024-05-12 13:33:20,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3437, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3574, PETRI_PLACES=233, PETRI_TRANSITIONS=299} [2024-05-12 13:33:20,286 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 180 predicate places. [2024-05-12 13:33:20,286 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 299 transitions, 3574 flow [2024-05-12 13:33:20,292 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 13:33:20,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:33:20,292 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:33:20,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-05-12 13:33:20,292 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:33:20,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:33:20,293 INFO L85 PathProgramCache]: Analyzing trace with hash -2092001216, now seen corresponding path program 1 times [2024-05-12 13:33:20,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:33:20,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990072270] [2024-05-12 13:33:20,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:33:20,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:33:20,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:33:21,044 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 13:33:21,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:33:21,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990072270] [2024-05-12 13:33:21,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990072270] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:33:21,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:33:21,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:33:21,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163059203] [2024-05-12 13:33:21,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:33:21,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:33:21,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:33:21,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:33:21,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:33:21,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-05-12 13:33:21,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 299 transitions, 3574 flow. Second operand has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:33:21,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:33:21,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-05-12 13:33:21,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:33:23,122 INFO L124 PetriNetUnfolderBase]: 6591/10782 cut-off events. [2024-05-12 13:33:23,123 INFO L125 PetriNetUnfolderBase]: For 282964/282964 co-relation queries the response was YES. [2024-05-12 13:33:23,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71592 conditions, 10782 events. 6591/10782 cut-off events. For 282964/282964 co-relation queries the response was YES. Maximal size of possible extension queue 509. Compared 74852 event pairs, 1533 based on Foata normal form. 8/10514 useless extension candidates. Maximal degree in co-relation 71484. Up to 8919 conditions per place. [2024-05-12 13:33:23,271 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 275 selfloop transitions, 56 changer transitions 0/340 dead transitions. [2024-05-12 13:33:23,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 340 transitions, 4570 flow [2024-05-12 13:33:23,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:33:23,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:33:23,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-05-12 13:33:23,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5167173252279635 [2024-05-12 13:33:23,276 INFO L175 Difference]: Start difference. First operand has 233 places, 299 transitions, 3574 flow. Second operand 7 states and 170 transitions. [2024-05-12 13:33:23,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 340 transitions, 4570 flow [2024-05-12 13:33:23,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 340 transitions, 4462 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-05-12 13:33:23,831 INFO L231 Difference]: Finished difference. Result has 235 places, 301 transitions, 3647 flow [2024-05-12 13:33:23,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3466, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3647, PETRI_PLACES=235, PETRI_TRANSITIONS=301} [2024-05-12 13:33:23,833 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 182 predicate places. [2024-05-12 13:33:23,833 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 301 transitions, 3647 flow [2024-05-12 13:33:23,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:33:23,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:33:23,833 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:33:23,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-05-12 13:33:23,833 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:33:23,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:33:23,834 INFO L85 PathProgramCache]: Analyzing trace with hash -2089111489, now seen corresponding path program 1 times [2024-05-12 13:33:23,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:33:23,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342158912] [2024-05-12 13:33:23,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:33:23,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:33:23,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:33:24,693 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 13:33:24,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:33:24,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342158912] [2024-05-12 13:33:24,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342158912] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:33:24,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:33:24,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:33:24,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712642344] [2024-05-12 13:33:24,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:33:24,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:33:24,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:33:24,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:33:24,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:33:24,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-05-12 13:33:24,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 301 transitions, 3647 flow. Second operand has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:33:24,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:33:24,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-05-12 13:33:24,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:33:26,692 INFO L124 PetriNetUnfolderBase]: 6802/11080 cut-off events. [2024-05-12 13:33:26,693 INFO L125 PetriNetUnfolderBase]: For 292968/292968 co-relation queries the response was YES. [2024-05-12 13:33:26,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74571 conditions, 11080 events. 6802/11080 cut-off events. For 292968/292968 co-relation queries the response was YES. Maximal size of possible extension queue 518. Compared 76722 event pairs, 1488 based on Foata normal form. 2/10774 useless extension candidates. Maximal degree in co-relation 74461. Up to 9372 conditions per place. [2024-05-12 13:33:26,835 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 278 selfloop transitions, 109 changer transitions 0/396 dead transitions. [2024-05-12 13:33:26,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 396 transitions, 5589 flow [2024-05-12 13:33:26,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:33:26,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:33:26,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 210 transitions. [2024-05-12 13:33:26,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49645390070921985 [2024-05-12 13:33:26,837 INFO L175 Difference]: Start difference. First operand has 235 places, 301 transitions, 3647 flow. Second operand 9 states and 210 transitions. [2024-05-12 13:33:26,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 396 transitions, 5589 flow [2024-05-12 13:33:27,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 396 transitions, 5448 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-05-12 13:33:27,381 INFO L231 Difference]: Finished difference. Result has 244 places, 360 transitions, 4805 flow [2024-05-12 13:33:27,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3550, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4805, PETRI_PLACES=244, PETRI_TRANSITIONS=360} [2024-05-12 13:33:27,382 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 191 predicate places. [2024-05-12 13:33:27,382 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 360 transitions, 4805 flow [2024-05-12 13:33:27,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:33:27,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:33:27,382 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:33:27,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-05-12 13:33:27,383 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:33:27,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:33:27,383 INFO L85 PathProgramCache]: Analyzing trace with hash -640829929, now seen corresponding path program 2 times [2024-05-12 13:33:27,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:33:27,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477776154] [2024-05-12 13:33:27,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:33:27,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:33:27,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:33:28,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:33:28,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:33:28,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477776154] [2024-05-12 13:33:28,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477776154] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:33:28,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:33:28,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:33:28,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251722402] [2024-05-12 13:33:28,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:33:28,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:33:28,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:33:28,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:33:28,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:33:28,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-05-12 13:33:28,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 360 transitions, 4805 flow. Second operand has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:33:28,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:33:28,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-05-12 13:33:28,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:33:30,534 INFO L124 PetriNetUnfolderBase]: 6840/11160 cut-off events. [2024-05-12 13:33:30,534 INFO L125 PetriNetUnfolderBase]: For 323132/323132 co-relation queries the response was YES. [2024-05-12 13:33:30,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78696 conditions, 11160 events. 6840/11160 cut-off events. For 323132/323132 co-relation queries the response was YES. Maximal size of possible extension queue 533. Compared 77950 event pairs, 1839 based on Foata normal form. 4/10885 useless extension candidates. Maximal degree in co-relation 78581. Up to 9338 conditions per place. [2024-05-12 13:33:30,712 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 281 selfloop transitions, 99 changer transitions 0/389 dead transitions. [2024-05-12 13:33:30,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 389 transitions, 5909 flow [2024-05-12 13:33:30,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:33:30,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:33:30,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 142 transitions. [2024-05-12 13:33:30,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5035460992907801 [2024-05-12 13:33:30,717 INFO L175 Difference]: Start difference. First operand has 244 places, 360 transitions, 4805 flow. Second operand 6 states and 142 transitions. [2024-05-12 13:33:30,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 389 transitions, 5909 flow [2024-05-12 13:33:31,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 389 transitions, 5623 flow, removed 133 selfloop flow, removed 2 redundant places. [2024-05-12 13:33:31,505 INFO L231 Difference]: Finished difference. Result has 248 places, 363 transitions, 4887 flow [2024-05-12 13:33:31,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4543, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4887, PETRI_PLACES=248, PETRI_TRANSITIONS=363} [2024-05-12 13:33:31,506 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 195 predicate places. [2024-05-12 13:33:31,506 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 363 transitions, 4887 flow [2024-05-12 13:33:31,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:33:31,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:33:31,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:33:31,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-05-12 13:33:31,507 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:33:31,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:33:31,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1671213965, now seen corresponding path program 2 times [2024-05-12 13:33:31,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:33:31,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873804808] [2024-05-12 13:33:31,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:33:31,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:33:31,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:33:33,560 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 13:33:33,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:33:33,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873804808] [2024-05-12 13:33:33,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873804808] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:33:33,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:33:33,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:33:33,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851063391] [2024-05-12 13:33:33,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:33:33,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:33:33,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:33:33,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:33:33,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:33:33,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-05-12 13:33:33,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 363 transitions, 4887 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 13:33:33,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:33:33,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-05-12 13:33:33,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:33:36,148 INFO L124 PetriNetUnfolderBase]: 6970/11428 cut-off events. [2024-05-12 13:33:36,148 INFO L125 PetriNetUnfolderBase]: For 336961/336961 co-relation queries the response was YES. [2024-05-12 13:33:36,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80429 conditions, 11428 events. 6970/11428 cut-off events. For 336961/336961 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 79636 event pairs, 1660 based on Foata normal form. 12/11110 useless extension candidates. Maximal degree in co-relation 80312. Up to 9509 conditions per place. [2024-05-12 13:33:36,349 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 355 selfloop transitions, 65 changer transitions 0/429 dead transitions. [2024-05-12 13:33:36,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 429 transitions, 6177 flow [2024-05-12 13:33:36,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:33:36,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:33:36,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 241 transitions. [2024-05-12 13:33:36,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5127659574468085 [2024-05-12 13:33:36,350 INFO L175 Difference]: Start difference. First operand has 248 places, 363 transitions, 4887 flow. Second operand 10 states and 241 transitions. [2024-05-12 13:33:36,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 429 transitions, 6177 flow [2024-05-12 13:33:37,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 429 transitions, 5941 flow, removed 42 selfloop flow, removed 4 redundant places. [2024-05-12 13:33:37,134 INFO L231 Difference]: Finished difference. Result has 255 places, 366 transitions, 4858 flow [2024-05-12 13:33:37,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4651, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4858, PETRI_PLACES=255, PETRI_TRANSITIONS=366} [2024-05-12 13:33:37,135 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 202 predicate places. [2024-05-12 13:33:37,135 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 366 transitions, 4858 flow [2024-05-12 13:33:37,135 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 13:33:37,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:33:37,135 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:33:37,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-05-12 13:33:37,135 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:33:37,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:33:37,136 INFO L85 PathProgramCache]: Analyzing trace with hash 386986649, now seen corresponding path program 3 times [2024-05-12 13:33:37,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:33:37,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743086353] [2024-05-12 13:33:37,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:33:37,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:33:37,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:33:38,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:33:38,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:33:38,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743086353] [2024-05-12 13:33:38,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743086353] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:33:38,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:33:38,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:33:38,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065712387] [2024-05-12 13:33:38,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:33:38,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:33:38,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:33:38,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:33:38,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:33:39,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-05-12 13:33:39,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 366 transitions, 4858 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 13:33:39,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:33:39,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-05-12 13:33:39,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:33:41,834 INFO L124 PetriNetUnfolderBase]: 6950/11565 cut-off events. [2024-05-12 13:33:41,834 INFO L125 PetriNetUnfolderBase]: For 337243/337246 co-relation queries the response was YES. [2024-05-12 13:33:41,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79893 conditions, 11565 events. 6950/11565 cut-off events. For 337243/337246 co-relation queries the response was YES. Maximal size of possible extension queue 531. Compared 82291 event pairs, 2297 based on Foata normal form. 14/11221 useless extension candidates. Maximal degree in co-relation 79774. Up to 9567 conditions per place. [2024-05-12 13:33:41,972 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 372 selfloop transitions, 50 changer transitions 0/431 dead transitions. [2024-05-12 13:33:41,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 431 transitions, 6121 flow [2024-05-12 13:33:41,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:33:41,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:33:41,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 240 transitions. [2024-05-12 13:33:41,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2024-05-12 13:33:41,974 INFO L175 Difference]: Start difference. First operand has 255 places, 366 transitions, 4858 flow. Second operand 10 states and 240 transitions. [2024-05-12 13:33:41,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 431 transitions, 6121 flow [2024-05-12 13:33:42,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 431 transitions, 5961 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-05-12 13:33:42,558 INFO L231 Difference]: Finished difference. Result has 260 places, 368 transitions, 4842 flow [2024-05-12 13:33:42,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4698, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4842, PETRI_PLACES=260, PETRI_TRANSITIONS=368} [2024-05-12 13:33:42,558 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 207 predicate places. [2024-05-12 13:33:42,558 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 368 transitions, 4842 flow [2024-05-12 13:33:42,559 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 13:33:42,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:33:42,559 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:33:42,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-05-12 13:33:42,559 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:33:42,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:33:42,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1443139835, now seen corresponding path program 4 times [2024-05-12 13:33:42,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:33:42,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777607406] [2024-05-12 13:33:42,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:33:42,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:33:42,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:33:45,213 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 13:33:45,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:33:45,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777607406] [2024-05-12 13:33:45,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777607406] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:33:45,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:33:45,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:33:45,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715956242] [2024-05-12 13:33:45,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:33:45,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:33:45,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:33:45,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:33:45,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:33:45,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-05-12 13:33:45,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 368 transitions, 4842 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 13:33:45,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:33:45,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-05-12 13:33:45,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:33:47,767 INFO L124 PetriNetUnfolderBase]: 6950/11553 cut-off events. [2024-05-12 13:33:47,768 INFO L125 PetriNetUnfolderBase]: For 330579/330582 co-relation queries the response was YES. [2024-05-12 13:33:47,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79038 conditions, 11553 events. 6950/11553 cut-off events. For 330579/330582 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 82107 event pairs, 2262 based on Foata normal form. 14/11213 useless extension candidates. Maximal degree in co-relation 78917. Up to 9456 conditions per place. [2024-05-12 13:33:47,937 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 370 selfloop transitions, 55 changer transitions 0/434 dead transitions. [2024-05-12 13:33:47,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 434 transitions, 6098 flow [2024-05-12 13:33:47,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:33:47,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:33:47,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 240 transitions. [2024-05-12 13:33:47,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2024-05-12 13:33:47,939 INFO L175 Difference]: Start difference. First operand has 260 places, 368 transitions, 4842 flow. Second operand 10 states and 240 transitions. [2024-05-12 13:33:47,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 434 transitions, 6098 flow [2024-05-12 13:33:48,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 434 transitions, 5963 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-05-12 13:33:48,706 INFO L231 Difference]: Finished difference. Result has 263 places, 370 transitions, 4850 flow [2024-05-12 13:33:48,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4661, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4850, PETRI_PLACES=263, PETRI_TRANSITIONS=370} [2024-05-12 13:33:48,707 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 210 predicate places. [2024-05-12 13:33:48,707 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 370 transitions, 4850 flow [2024-05-12 13:33:48,707 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 13:33:48,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:33:48,707 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:33:48,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-05-12 13:33:48,708 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:33:48,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:33:48,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1160040064, now seen corresponding path program 1 times [2024-05-12 13:33:48,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:33:48,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059660400] [2024-05-12 13:33:48,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:33:48,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:33:48,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:33:49,563 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 13:33:49,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:33:49,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059660400] [2024-05-12 13:33:49,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059660400] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:33:49,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:33:49,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:33:49,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494630404] [2024-05-12 13:33:49,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:33:49,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:33:49,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:33:49,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:33:49,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:33:49,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-05-12 13:33:49,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 370 transitions, 4850 flow. Second operand has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:33:49,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:33:49,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-05-12 13:33:49,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:33:51,796 INFO L124 PetriNetUnfolderBase]: 7144/11888 cut-off events. [2024-05-12 13:33:51,796 INFO L125 PetriNetUnfolderBase]: For 345863/345866 co-relation queries the response was YES. [2024-05-12 13:33:51,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82119 conditions, 11888 events. 7144/11888 cut-off events. For 345863/345866 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 84888 event pairs, 2249 based on Foata normal form. 6/11519 useless extension candidates. Maximal degree in co-relation 81996. Up to 9636 conditions per place. [2024-05-12 13:33:51,997 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 325 selfloop transitions, 85 changer transitions 0/419 dead transitions. [2024-05-12 13:33:51,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 419 transitions, 6287 flow [2024-05-12 13:33:51,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:33:51,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:33:51,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2024-05-12 13:33:51,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5079787234042553 [2024-05-12 13:33:51,998 INFO L175 Difference]: Start difference. First operand has 263 places, 370 transitions, 4850 flow. Second operand 8 states and 191 transitions. [2024-05-12 13:33:51,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 419 transitions, 6287 flow [2024-05-12 13:33:52,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 419 transitions, 6115 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-05-12 13:33:52,718 INFO L231 Difference]: Finished difference. Result has 266 places, 382 transitions, 5197 flow [2024-05-12 13:33:52,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4684, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5197, PETRI_PLACES=266, PETRI_TRANSITIONS=382} [2024-05-12 13:33:52,734 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 213 predicate places. [2024-05-12 13:33:52,734 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 382 transitions, 5197 flow [2024-05-12 13:33:52,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:33:52,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:33:52,734 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:33:52,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-05-12 13:33:52,734 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:33:52,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:33:52,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1160189794, now seen corresponding path program 2 times [2024-05-12 13:33:52,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:33:52,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262879970] [2024-05-12 13:33:52,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:33:52,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:33:52,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:33:53,672 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 13:33:53,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:33:53,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262879970] [2024-05-12 13:33:53,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262879970] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:33:53,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:33:53,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:33:53,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768329485] [2024-05-12 13:33:53,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:33:53,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:33:53,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:33:53,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:33:53,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:33:53,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-05-12 13:33:53,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 382 transitions, 5197 flow. Second operand has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:33:53,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:33:53,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-05-12 13:33:53,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:33:55,962 INFO L124 PetriNetUnfolderBase]: 7212/11756 cut-off events. [2024-05-12 13:33:55,963 INFO L125 PetriNetUnfolderBase]: For 362431/362434 co-relation queries the response was YES. [2024-05-12 13:33:56,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83915 conditions, 11756 events. 7212/11756 cut-off events. For 362431/362434 co-relation queries the response was YES. Maximal size of possible extension queue 537. Compared 82343 event pairs, 2258 based on Foata normal form. 6/11442 useless extension candidates. Maximal degree in co-relation 83790. Up to 9945 conditions per place. [2024-05-12 13:33:56,141 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 337 selfloop transitions, 73 changer transitions 0/419 dead transitions. [2024-05-12 13:33:56,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 419 transitions, 6348 flow [2024-05-12 13:33:56,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:33:56,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:33:56,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 186 transitions. [2024-05-12 13:33:56,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4946808510638298 [2024-05-12 13:33:56,142 INFO L175 Difference]: Start difference. First operand has 266 places, 382 transitions, 5197 flow. Second operand 8 states and 186 transitions. [2024-05-12 13:33:56,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 419 transitions, 6348 flow [2024-05-12 13:33:57,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 419 transitions, 6138 flow, removed 67 selfloop flow, removed 5 redundant places. [2024-05-12 13:33:57,015 INFO L231 Difference]: Finished difference. Result has 269 places, 386 transitions, 5273 flow [2024-05-12 13:33:57,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5009, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5273, PETRI_PLACES=269, PETRI_TRANSITIONS=386} [2024-05-12 13:33:57,017 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 216 predicate places. [2024-05-12 13:33:57,017 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 386 transitions, 5273 flow [2024-05-12 13:33:57,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:33:57,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:33:57,018 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:33:57,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-05-12 13:33:57,018 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:33:57,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:33:57,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1885782126, now seen corresponding path program 3 times [2024-05-12 13:33:57,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:33:57,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524828555] [2024-05-12 13:33:57,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:33:57,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:33:57,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:33:57,966 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 13:33:57,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:33:57,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524828555] [2024-05-12 13:33:57,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524828555] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:33:57,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:33:57,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:33:57,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702835251] [2024-05-12 13:33:57,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:33:57,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:33:57,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:33:57,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:33:57,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:33:58,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-05-12 13:33:58,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 386 transitions, 5273 flow. Second operand has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:33:58,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:33:58,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-05-12 13:33:58,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:34:00,273 INFO L124 PetriNetUnfolderBase]: 7200/11704 cut-off events. [2024-05-12 13:34:00,273 INFO L125 PetriNetUnfolderBase]: For 351361/351364 co-relation queries the response was YES. [2024-05-12 13:34:00,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83211 conditions, 11704 events. 7200/11704 cut-off events. For 351361/351364 co-relation queries the response was YES. Maximal size of possible extension queue 544. Compared 81781 event pairs, 2526 based on Foata normal form. 6/11427 useless extension candidates. Maximal degree in co-relation 83085. Up to 10142 conditions per place. [2024-05-12 13:34:00,462 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 354 selfloop transitions, 47 changer transitions 0/410 dead transitions. [2024-05-12 13:34:00,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 410 transitions, 6228 flow [2024-05-12 13:34:00,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:34:00,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:34:00,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 159 transitions. [2024-05-12 13:34:00,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48328267477203646 [2024-05-12 13:34:00,464 INFO L175 Difference]: Start difference. First operand has 269 places, 386 transitions, 5273 flow. Second operand 7 states and 159 transitions. [2024-05-12 13:34:00,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 410 transitions, 6228 flow [2024-05-12 13:34:01,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 410 transitions, 5990 flow, removed 52 selfloop flow, removed 6 redundant places. [2024-05-12 13:34:01,424 INFO L231 Difference]: Finished difference. Result has 270 places, 386 transitions, 5143 flow [2024-05-12 13:34:01,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5035, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5143, PETRI_PLACES=270, PETRI_TRANSITIONS=386} [2024-05-12 13:34:01,425 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 217 predicate places. [2024-05-12 13:34:01,425 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 386 transitions, 5143 flow [2024-05-12 13:34:01,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:34:01,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:34:01,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:34:01,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-05-12 13:34:01,426 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:34:01,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:34:01,426 INFO L85 PathProgramCache]: Analyzing trace with hash 670066640, now seen corresponding path program 4 times [2024-05-12 13:34:01,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:34:01,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819900217] [2024-05-12 13:34:01,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:34:01,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:34:01,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:34:02,373 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 13:34:02,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:34:02,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819900217] [2024-05-12 13:34:02,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819900217] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:34:02,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:34:02,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:34:02,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863221011] [2024-05-12 13:34:02,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:34:02,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:34:02,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:34:02,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:34:02,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:34:02,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-05-12 13:34:02,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 386 transitions, 5143 flow. Second operand has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:34:02,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:34:02,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-05-12 13:34:02,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:34:04,744 INFO L124 PetriNetUnfolderBase]: 7371/12005 cut-off events. [2024-05-12 13:34:04,744 INFO L125 PetriNetUnfolderBase]: For 368940/368943 co-relation queries the response was YES. [2024-05-12 13:34:04,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85396 conditions, 12005 events. 7371/12005 cut-off events. For 368940/368943 co-relation queries the response was YES. Maximal size of possible extension queue 552. Compared 84258 event pairs, 2378 based on Foata normal form. 6/11688 useless extension candidates. Maximal degree in co-relation 85269. Up to 10313 conditions per place. [2024-05-12 13:34:04,931 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 392 selfloop transitions, 45 changer transitions 0/446 dead transitions. [2024-05-12 13:34:04,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 446 transitions, 6757 flow [2024-05-12 13:34:04,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:34:04,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:34:04,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 213 transitions. [2024-05-12 13:34:04,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5035460992907801 [2024-05-12 13:34:04,932 INFO L175 Difference]: Start difference. First operand has 270 places, 386 transitions, 5143 flow. Second operand 9 states and 213 transitions. [2024-05-12 13:34:04,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 446 transitions, 6757 flow [2024-05-12 13:34:05,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 446 transitions, 6651 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-05-12 13:34:05,845 INFO L231 Difference]: Finished difference. Result has 275 places, 397 transitions, 5443 flow [2024-05-12 13:34:05,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5037, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5443, PETRI_PLACES=275, PETRI_TRANSITIONS=397} [2024-05-12 13:34:05,846 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 222 predicate places. [2024-05-12 13:34:05,846 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 397 transitions, 5443 flow [2024-05-12 13:34:05,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:34:05,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:34:05,846 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:34:05,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-05-12 13:34:05,846 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:34:05,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:34:05,847 INFO L85 PathProgramCache]: Analyzing trace with hash 469257344, now seen corresponding path program 5 times [2024-05-12 13:34:05,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:34:05,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592758977] [2024-05-12 13:34:05,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:34:05,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:34:05,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:34:07,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:34:07,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:34:07,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592758977] [2024-05-12 13:34:07,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592758977] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:34:07,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:34:07,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:34:07,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705765545] [2024-05-12 13:34:07,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:34:07,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:34:07,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:34:07,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:34:07,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:34:07,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-05-12 13:34:07,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 397 transitions, 5443 flow. Second operand has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:34:07,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:34:07,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-05-12 13:34:07,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:34:09,545 INFO L124 PetriNetUnfolderBase]: 7462/12318 cut-off events. [2024-05-12 13:34:09,545 INFO L125 PetriNetUnfolderBase]: For 393161/393164 co-relation queries the response was YES. [2024-05-12 13:34:09,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88204 conditions, 12318 events. 7462/12318 cut-off events. For 393161/393164 co-relation queries the response was YES. Maximal size of possible extension queue 552. Compared 87412 event pairs, 2388 based on Foata normal form. 4/11946 useless extension candidates. Maximal degree in co-relation 88075. Up to 10374 conditions per place. [2024-05-12 13:34:09,742 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 384 selfloop transitions, 54 changer transitions 0/447 dead transitions. [2024-05-12 13:34:09,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 447 transitions, 6757 flow [2024-05-12 13:34:09,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:34:09,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:34:09,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-05-12 13:34:09,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5053191489361702 [2024-05-12 13:34:09,743 INFO L175 Difference]: Start difference. First operand has 275 places, 397 transitions, 5443 flow. Second operand 8 states and 190 transitions. [2024-05-12 13:34:09,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 447 transitions, 6757 flow [2024-05-12 13:34:10,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 447 transitions, 6576 flow, removed 71 selfloop flow, removed 5 redundant places. [2024-05-12 13:34:10,537 INFO L231 Difference]: Finished difference. Result has 279 places, 407 transitions, 5587 flow [2024-05-12 13:34:10,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5262, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5587, PETRI_PLACES=279, PETRI_TRANSITIONS=407} [2024-05-12 13:34:10,538 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 226 predicate places. [2024-05-12 13:34:10,538 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 407 transitions, 5587 flow [2024-05-12 13:34:10,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:34:10,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:34:10,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:34:10,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-05-12 13:34:10,539 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:34:10,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:34:10,539 INFO L85 PathProgramCache]: Analyzing trace with hash 212906564, now seen corresponding path program 6 times [2024-05-12 13:34:10,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:34:10,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024446483] [2024-05-12 13:34:10,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:34:10,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:34:10,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:34:11,481 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 13:34:11,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:34:11,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024446483] [2024-05-12 13:34:11,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024446483] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:34:11,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:34:11,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:34:11,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158406883] [2024-05-12 13:34:11,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:34:11,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:34:11,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:34:11,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:34:11,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:34:11,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-05-12 13:34:11,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 407 transitions, 5587 flow. Second operand has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:34:11,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:34:11,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-05-12 13:34:11,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:34:13,946 INFO L124 PetriNetUnfolderBase]: 7450/12130 cut-off events. [2024-05-12 13:34:13,946 INFO L125 PetriNetUnfolderBase]: For 396460/396463 co-relation queries the response was YES. [2024-05-12 13:34:14,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88130 conditions, 12130 events. 7450/12130 cut-off events. For 396460/396463 co-relation queries the response was YES. Maximal size of possible extension queue 557. Compared 85241 event pairs, 2387 based on Foata normal form. 6/11802 useless extension candidates. Maximal degree in co-relation 87998. Up to 10505 conditions per place. [2024-05-12 13:34:14,135 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 400 selfloop transitions, 37 changer transitions 0/446 dead transitions. [2024-05-12 13:34:14,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 446 transitions, 6762 flow [2024-05-12 13:34:14,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:34:14,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:34:14,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 186 transitions. [2024-05-12 13:34:14,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4946808510638298 [2024-05-12 13:34:14,137 INFO L175 Difference]: Start difference. First operand has 279 places, 407 transitions, 5587 flow. Second operand 8 states and 186 transitions. [2024-05-12 13:34:14,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 446 transitions, 6762 flow [2024-05-12 13:34:15,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 446 transitions, 6559 flow, removed 65 selfloop flow, removed 4 redundant places. [2024-05-12 13:34:15,126 INFO L231 Difference]: Finished difference. Result has 283 places, 407 transitions, 5465 flow [2024-05-12 13:34:15,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5384, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5465, PETRI_PLACES=283, PETRI_TRANSITIONS=407} [2024-05-12 13:34:15,128 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 230 predicate places. [2024-05-12 13:34:15,128 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 407 transitions, 5465 flow [2024-05-12 13:34:15,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:34:15,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:34:15,129 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:34:15,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-05-12 13:34:15,129 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:34:15,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:34:15,129 INFO L85 PathProgramCache]: Analyzing trace with hash -268083502, now seen corresponding path program 7 times [2024-05-12 13:34:15,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:34:15,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671004693] [2024-05-12 13:34:15,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:34:15,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:34:15,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:34:15,991 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 13:34:15,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:34:15,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671004693] [2024-05-12 13:34:15,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671004693] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:34:15,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:34:15,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:34:15,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219978528] [2024-05-12 13:34:15,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:34:15,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:34:15,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:34:15,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:34:15,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:34:16,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-05-12 13:34:16,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 407 transitions, 5465 flow. Second operand has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:34:16,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:34:16,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-05-12 13:34:16,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:34:18,354 INFO L124 PetriNetUnfolderBase]: 7549/12503 cut-off events. [2024-05-12 13:34:18,354 INFO L125 PetriNetUnfolderBase]: For 410568/410571 co-relation queries the response was YES. [2024-05-12 13:34:18,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89683 conditions, 12503 events. 7549/12503 cut-off events. For 410568/410571 co-relation queries the response was YES. Maximal size of possible extension queue 566. Compared 89454 event pairs, 2309 based on Foata normal form. 4/12114 useless extension candidates. Maximal degree in co-relation 89550. Up to 9568 conditions per place. [2024-05-12 13:34:18,566 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 324 selfloop transitions, 122 changer transitions 0/455 dead transitions. [2024-05-12 13:34:18,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 455 transitions, 6984 flow [2024-05-12 13:34:18,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:34:18,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:34:18,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 193 transitions. [2024-05-12 13:34:18,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5132978723404256 [2024-05-12 13:34:18,568 INFO L175 Difference]: Start difference. First operand has 283 places, 407 transitions, 5465 flow. Second operand 8 states and 193 transitions. [2024-05-12 13:34:18,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 455 transitions, 6984 flow [2024-05-12 13:34:19,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 455 transitions, 6883 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-05-12 13:34:19,530 INFO L231 Difference]: Finished difference. Result has 284 places, 414 transitions, 5901 flow [2024-05-12 13:34:19,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5368, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5901, PETRI_PLACES=284, PETRI_TRANSITIONS=414} [2024-05-12 13:34:19,531 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 231 predicate places. [2024-05-12 13:34:19,531 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 414 transitions, 5901 flow [2024-05-12 13:34:19,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:34:19,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:34:19,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:34:19,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-05-12 13:34:19,532 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:34:19,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:34:19,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1083790160, now seen corresponding path program 8 times [2024-05-12 13:34:19,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:34:19,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199789545] [2024-05-12 13:34:19,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:34:19,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:34:19,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:34:20,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:34:20,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:34:20,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199789545] [2024-05-12 13:34:20,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199789545] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:34:20,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:34:20,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:34:20,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801039009] [2024-05-12 13:34:20,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:34:20,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:34:20,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:34:20,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:34:20,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:34:20,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-05-12 13:34:20,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 414 transitions, 5901 flow. Second operand has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:34:20,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:34:20,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-05-12 13:34:20,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:34:23,254 INFO L124 PetriNetUnfolderBase]: 7663/12417 cut-off events. [2024-05-12 13:34:23,255 INFO L125 PetriNetUnfolderBase]: For 440926/440929 co-relation queries the response was YES. [2024-05-12 13:34:23,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94116 conditions, 12417 events. 7663/12417 cut-off events. For 440926/440929 co-relation queries the response was YES. Maximal size of possible extension queue 567. Compared 86957 event pairs, 2301 based on Foata normal form. 4/12091 useless extension candidates. Maximal degree in co-relation 93983. Up to 10154 conditions per place. [2024-05-12 13:34:23,535 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 355 selfloop transitions, 96 changer transitions 0/460 dead transitions. [2024-05-12 13:34:23,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 460 transitions, 7479 flow [2024-05-12 13:34:23,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:34:23,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:34:23,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-05-12 13:34:23,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5026595744680851 [2024-05-12 13:34:23,537 INFO L175 Difference]: Start difference. First operand has 284 places, 414 transitions, 5901 flow. Second operand 8 states and 189 transitions. [2024-05-12 13:34:23,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 460 transitions, 7479 flow [2024-05-12 13:34:24,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 460 transitions, 7258 flow, removed 70 selfloop flow, removed 3 redundant places. [2024-05-12 13:34:24,778 INFO L231 Difference]: Finished difference. Result has 290 places, 421 transitions, 6149 flow [2024-05-12 13:34:24,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5718, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6149, PETRI_PLACES=290, PETRI_TRANSITIONS=421} [2024-05-12 13:34:24,779 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 237 predicate places. [2024-05-12 13:34:24,779 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 421 transitions, 6149 flow [2024-05-12 13:34:24,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:34:24,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:34:24,779 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:34:24,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-05-12 13:34:24,780 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:34:24,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:34:24,780 INFO L85 PathProgramCache]: Analyzing trace with hash 626213444, now seen corresponding path program 9 times [2024-05-12 13:34:24,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:34:24,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999505954] [2024-05-12 13:34:24,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:34:24,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:34:24,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:34:25,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:34:25,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:34:25,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999505954] [2024-05-12 13:34:25,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999505954] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:34:25,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:34:25,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:34:25,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426058616] [2024-05-12 13:34:25,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:34:25,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:34:25,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:34:25,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:34:25,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:34:25,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-05-12 13:34:25,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 421 transitions, 6149 flow. Second operand has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:34:25,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:34:25,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-05-12 13:34:25,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:34:28,030 INFO L124 PetriNetUnfolderBase]: 7651/12421 cut-off events. [2024-05-12 13:34:28,030 INFO L125 PetriNetUnfolderBase]: For 438918/438921 co-relation queries the response was YES. [2024-05-12 13:34:28,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94219 conditions, 12421 events. 7651/12421 cut-off events. For 438918/438921 co-relation queries the response was YES. Maximal size of possible extension queue 567. Compared 87280 event pairs, 2293 based on Foata normal form. 6/12085 useless extension candidates. Maximal degree in co-relation 94083. Up to 10336 conditions per place. [2024-05-12 13:34:28,229 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 368 selfloop transitions, 83 changer transitions 0/460 dead transitions. [2024-05-12 13:34:28,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 460 transitions, 7410 flow [2024-05-12 13:34:28,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:34:28,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:34:28,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 188 transitions. [2024-05-12 13:34:28,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-05-12 13:34:28,231 INFO L175 Difference]: Start difference. First operand has 290 places, 421 transitions, 6149 flow. Second operand 8 states and 188 transitions. [2024-05-12 13:34:28,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 460 transitions, 7410 flow [2024-05-12 13:34:29,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 460 transitions, 7179 flow, removed 69 selfloop flow, removed 4 redundant places. [2024-05-12 13:34:29,567 INFO L231 Difference]: Finished difference. Result has 294 places, 421 transitions, 6097 flow [2024-05-12 13:34:29,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5924, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6097, PETRI_PLACES=294, PETRI_TRANSITIONS=421} [2024-05-12 13:34:29,568 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 241 predicate places. [2024-05-12 13:34:29,568 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 421 transitions, 6097 flow [2024-05-12 13:34:29,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:34:29,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:34:29,568 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:34:29,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-05-12 13:34:29,569 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:34:29,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:34:29,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1522291490, now seen corresponding path program 10 times [2024-05-12 13:34:29,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:34:29,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356871608] [2024-05-12 13:34:29,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:34:29,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:34:29,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:34:30,483 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 13:34:30,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:34:30,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356871608] [2024-05-12 13:34:30,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356871608] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:34:30,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:34:30,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:34:30,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447570353] [2024-05-12 13:34:30,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:34:30,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:34:30,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:34:30,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:34:30,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:34:30,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-05-12 13:34:30,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 421 transitions, 6097 flow. Second operand has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:34:30,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:34:30,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-05-12 13:34:30,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:34:32,909 INFO L124 PetriNetUnfolderBase]: 7719/12532 cut-off events. [2024-05-12 13:34:32,909 INFO L125 PetriNetUnfolderBase]: For 441659/441662 co-relation queries the response was YES. [2024-05-12 13:34:33,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95215 conditions, 12532 events. 7719/12532 cut-off events. For 441659/441662 co-relation queries the response was YES. Maximal size of possible extension queue 584. Compared 88357 event pairs, 2622 based on Foata normal form. 6/12227 useless extension candidates. Maximal degree in co-relation 95077. Up to 10787 conditions per place. [2024-05-12 13:34:33,110 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 395 selfloop transitions, 53 changer transitions 0/457 dead transitions. [2024-05-12 13:34:33,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 457 transitions, 7392 flow [2024-05-12 13:34:33,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:34:33,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:34:33,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 180 transitions. [2024-05-12 13:34:33,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4787234042553192 [2024-05-12 13:34:33,111 INFO L175 Difference]: Start difference. First operand has 294 places, 421 transitions, 6097 flow. Second operand 8 states and 180 transitions. [2024-05-12 13:34:33,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 457 transitions, 7392 flow [2024-05-12 13:34:34,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 457 transitions, 7187 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-05-12 13:34:34,561 INFO L231 Difference]: Finished difference. Result has 295 places, 425 transitions, 6141 flow [2024-05-12 13:34:34,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5892, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6141, PETRI_PLACES=295, PETRI_TRANSITIONS=425} [2024-05-12 13:34:34,562 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 242 predicate places. [2024-05-12 13:34:34,562 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 425 transitions, 6141 flow [2024-05-12 13:34:34,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:34:34,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:34:34,562 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:34:34,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-05-12 13:34:34,562 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:34:34,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:34:34,563 INFO L85 PathProgramCache]: Analyzing trace with hash 2136009454, now seen corresponding path program 11 times [2024-05-12 13:34:34,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:34:34,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764207390] [2024-05-12 13:34:34,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:34:34,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:34:34,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:34:35,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:34:35,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:34:35,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764207390] [2024-05-12 13:34:35,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764207390] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:34:35,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:34:35,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:34:35,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923860499] [2024-05-12 13:34:35,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:34:35,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:34:35,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:34:35,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:34:35,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:34:35,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-05-12 13:34:35,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 425 transitions, 6141 flow. Second operand has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:34:35,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:34:35,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-05-12 13:34:35,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:34:38,423 INFO L124 PetriNetUnfolderBase]: 7829/12629 cut-off events. [2024-05-12 13:34:38,423 INFO L125 PetriNetUnfolderBase]: For 455542/455542 co-relation queries the response was YES. [2024-05-12 13:34:38,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96978 conditions, 12629 events. 7829/12629 cut-off events. For 455542/455542 co-relation queries the response was YES. Maximal size of possible extension queue 588. Compared 88233 event pairs, 2036 based on Foata normal form. 2/12325 useless extension candidates. Maximal degree in co-relation 96839. Up to 10578 conditions per place. [2024-05-12 13:34:38,588 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 377 selfloop transitions, 89 changer transitions 0/475 dead transitions. [2024-05-12 13:34:38,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 475 transitions, 7963 flow [2024-05-12 13:34:38,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:34:38,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:34:38,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 184 transitions. [2024-05-12 13:34:38,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48936170212765956 [2024-05-12 13:34:38,590 INFO L175 Difference]: Start difference. First operand has 295 places, 425 transitions, 6141 flow. Second operand 8 states and 184 transitions. [2024-05-12 13:34:38,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 475 transitions, 7963 flow [2024-05-12 13:34:39,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 475 transitions, 7762 flow, removed 50 selfloop flow, removed 6 redundant places. [2024-05-12 13:34:39,643 INFO L231 Difference]: Finished difference. Result has 300 places, 441 transitions, 6644 flow [2024-05-12 13:34:39,644 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5940, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6644, PETRI_PLACES=300, PETRI_TRANSITIONS=441} [2024-05-12 13:34:39,644 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 247 predicate places. [2024-05-12 13:34:39,644 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 441 transitions, 6644 flow [2024-05-12 13:34:39,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:34:39,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:34:39,644 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:34:39,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-05-12 13:34:39,645 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:34:39,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:34:39,645 INFO L85 PathProgramCache]: Analyzing trace with hash -650174537, now seen corresponding path program 1 times [2024-05-12 13:34:39,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:34:39,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82798618] [2024-05-12 13:34:39,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:34:39,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:34:39,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:34:40,509 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 13:34:40,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:34:40,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82798618] [2024-05-12 13:34:40,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82798618] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:34:40,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:34:40,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:34:40,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134004084] [2024-05-12 13:34:40,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:34:40,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:34:40,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:34:40,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:34:40,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:34:40,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-05-12 13:34:40,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 441 transitions, 6644 flow. Second operand has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:34:40,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:34:40,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-05-12 13:34:40,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:34:43,319 INFO L124 PetriNetUnfolderBase]: 7867/12787 cut-off events. [2024-05-12 13:34:43,319 INFO L125 PetriNetUnfolderBase]: For 489337/489337 co-relation queries the response was YES. [2024-05-12 13:34:43,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100153 conditions, 12787 events. 7867/12787 cut-off events. For 489337/489337 co-relation queries the response was YES. Maximal size of possible extension queue 604. Compared 90501 event pairs, 2058 based on Foata normal form. 4/12461 useless extension candidates. Maximal degree in co-relation 100010. Up to 10862 conditions per place. [2024-05-12 13:34:43,538 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 381 selfloop transitions, 86 changer transitions 0/476 dead transitions. [2024-05-12 13:34:43,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 476 transitions, 8037 flow [2024-05-12 13:34:43,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:34:43,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:34:43,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 162 transitions. [2024-05-12 13:34:43,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49240121580547114 [2024-05-12 13:34:43,541 INFO L175 Difference]: Start difference. First operand has 300 places, 441 transitions, 6644 flow. Second operand 7 states and 162 transitions. [2024-05-12 13:34:43,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 476 transitions, 8037 flow [2024-05-12 13:34:44,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 476 transitions, 7712 flow, removed 105 selfloop flow, removed 4 redundant places. [2024-05-12 13:34:44,891 INFO L231 Difference]: Finished difference. Result has 303 places, 444 transitions, 6641 flow [2024-05-12 13:34:44,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6331, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6641, PETRI_PLACES=303, PETRI_TRANSITIONS=444} [2024-05-12 13:34:44,891 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 250 predicate places. [2024-05-12 13:34:44,892 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 444 transitions, 6641 flow [2024-05-12 13:34:44,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:34:44,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:34:44,892 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:34:44,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-05-12 13:34:44,892 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:34:44,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:34:44,893 INFO L85 PathProgramCache]: Analyzing trace with hash -921487157, now seen corresponding path program 2 times [2024-05-12 13:34:44,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:34:44,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107065097] [2024-05-12 13:34:44,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:34:44,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:34:44,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:34:45,655 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 13:34:45,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:34:45,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107065097] [2024-05-12 13:34:45,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107065097] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:34:45,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:34:45,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:34:45,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675243374] [2024-05-12 13:34:45,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:34:45,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:34:45,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:34:45,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:34:45,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:34:45,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-05-12 13:34:45,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 444 transitions, 6641 flow. Second operand has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:34:45,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:34:45,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-05-12 13:34:45,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:34:48,743 INFO L124 PetriNetUnfolderBase]: 7915/12854 cut-off events. [2024-05-12 13:34:48,744 INFO L125 PetriNetUnfolderBase]: For 491211/491214 co-relation queries the response was YES. [2024-05-12 13:34:48,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99470 conditions, 12854 events. 7915/12854 cut-off events. For 491211/491214 co-relation queries the response was YES. Maximal size of possible extension queue 602. Compared 91067 event pairs, 2627 based on Foata normal form. 4/12541 useless extension candidates. Maximal degree in co-relation 99327. Up to 10973 conditions per place. [2024-05-12 13:34:49,128 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 405 selfloop transitions, 85 changer transitions 0/499 dead transitions. [2024-05-12 13:34:49,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 499 transitions, 8442 flow [2024-05-12 13:34:49,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:34:49,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:34:49,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 159 transitions. [2024-05-12 13:34:49,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48328267477203646 [2024-05-12 13:34:49,130 INFO L175 Difference]: Start difference. First operand has 303 places, 444 transitions, 6641 flow. Second operand 7 states and 159 transitions. [2024-05-12 13:34:49,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 499 transitions, 8442 flow [2024-05-12 13:34:50,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 499 transitions, 8078 flow, removed 87 selfloop flow, removed 6 redundant places. [2024-05-12 13:34:50,587 INFO L231 Difference]: Finished difference. Result has 306 places, 471 transitions, 7172 flow [2024-05-12 13:34:50,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6377, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7172, PETRI_PLACES=306, PETRI_TRANSITIONS=471} [2024-05-12 13:34:50,588 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 253 predicate places. [2024-05-12 13:34:50,588 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 471 transitions, 7172 flow [2024-05-12 13:34:50,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:34:50,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:34:50,588 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:34:50,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-05-12 13:34:50,589 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:34:50,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:34:50,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1037342292, now seen corresponding path program 12 times [2024-05-12 13:34:50,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:34:50,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116548796] [2024-05-12 13:34:50,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:34:50,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:34:50,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:34:51,382 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 13:34:51,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:34:51,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116548796] [2024-05-12 13:34:51,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116548796] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:34:51,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:34:51,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:34:51,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466766130] [2024-05-12 13:34:51,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:34:51,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:34:51,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:34:51,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:34:51,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:34:51,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-05-12 13:34:51,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 471 transitions, 7172 flow. Second operand has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:34:51,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:34:51,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-05-12 13:34:51,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:34:54,795 INFO L124 PetriNetUnfolderBase]: 7903/12817 cut-off events. [2024-05-12 13:34:54,796 INFO L125 PetriNetUnfolderBase]: For 498147/498150 co-relation queries the response was YES. [2024-05-12 13:34:54,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100143 conditions, 12817 events. 7903/12817 cut-off events. For 498147/498150 co-relation queries the response was YES. Maximal size of possible extension queue 600. Compared 90587 event pairs, 2696 based on Foata normal form. 6/12507 useless extension candidates. Maximal degree in co-relation 99998. Up to 11212 conditions per place. [2024-05-12 13:34:54,984 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 451 selfloop transitions, 38 changer transitions 0/498 dead transitions. [2024-05-12 13:34:54,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 498 transitions, 8342 flow [2024-05-12 13:34:54,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:34:54,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:34:54,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 176 transitions. [2024-05-12 13:34:54,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46808510638297873 [2024-05-12 13:34:54,986 INFO L175 Difference]: Start difference. First operand has 306 places, 471 transitions, 7172 flow. Second operand 8 states and 176 transitions. [2024-05-12 13:34:54,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 498 transitions, 8342 flow [2024-05-12 13:34:56,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 498 transitions, 8094 flow, removed 82 selfloop flow, removed 4 redundant places. [2024-05-12 13:34:56,560 INFO L231 Difference]: Finished difference. Result has 310 places, 471 transitions, 7007 flow [2024-05-12 13:34:56,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6924, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=433, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7007, PETRI_PLACES=310, PETRI_TRANSITIONS=471} [2024-05-12 13:34:56,561 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 257 predicate places. [2024-05-12 13:34:56,561 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 471 transitions, 7007 flow [2024-05-12 13:34:56,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:34:56,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:34:56,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:34:56,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-05-12 13:34:56,561 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:34:56,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:34:56,562 INFO L85 PathProgramCache]: Analyzing trace with hash 936100270, now seen corresponding path program 1 times [2024-05-12 13:34:56,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:34:56,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539698767] [2024-05-12 13:34:56,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:34:56,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:34:56,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:34:57,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:34:57,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:34:57,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539698767] [2024-05-12 13:34:57,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539698767] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:34:57,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:34:57,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:34:57,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739627760] [2024-05-12 13:34:57,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:34:57,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:34:57,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:34:57,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:34:57,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:34:57,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-05-12 13:34:57,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 471 transitions, 7007 flow. Second operand has 10 states, 10 states have (on average 13.7) internal successors, (137), 10 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:34:57,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:34:57,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-05-12 13:34:57,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:35:01,372 INFO L124 PetriNetUnfolderBase]: 8022/13088 cut-off events. [2024-05-12 13:35:01,372 INFO L125 PetriNetUnfolderBase]: For 503987/503987 co-relation queries the response was YES. [2024-05-12 13:35:01,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101168 conditions, 13088 events. 8022/13088 cut-off events. For 503987/503987 co-relation queries the response was YES. Maximal size of possible extension queue 600. Compared 92453 event pairs, 1819 based on Foata normal form. 8/12706 useless extension candidates. Maximal degree in co-relation 101023. Up to 10770 conditions per place. [2024-05-12 13:35:01,686 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 434 selfloop transitions, 93 changer transitions 0/536 dead transitions. [2024-05-12 13:35:01,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 536 transitions, 8760 flow [2024-05-12 13:35:01,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:35:01,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:35:01,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 241 transitions. [2024-05-12 13:35:01,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5127659574468085 [2024-05-12 13:35:01,687 INFO L175 Difference]: Start difference. First operand has 310 places, 471 transitions, 7007 flow. Second operand 10 states and 241 transitions. [2024-05-12 13:35:01,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 536 transitions, 8760 flow [2024-05-12 13:35:03,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 536 transitions, 8570 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-05-12 13:35:03,047 INFO L231 Difference]: Finished difference. Result has 315 places, 482 transitions, 7385 flow [2024-05-12 13:35:03,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6817, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7385, PETRI_PLACES=315, PETRI_TRANSITIONS=482} [2024-05-12 13:35:03,047 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 262 predicate places. [2024-05-12 13:35:03,047 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 482 transitions, 7385 flow [2024-05-12 13:35:03,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.7) internal successors, (137), 10 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:35:03,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:35:03,048 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:35:03,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-05-12 13:35:03,048 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:35:03,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:35:03,048 INFO L85 PathProgramCache]: Analyzing trace with hash 939915502, now seen corresponding path program 1 times [2024-05-12 13:35:03,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:35:03,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404927050] [2024-05-12 13:35:03,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:35:03,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:35:03,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:35:04,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:35:04,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:35:04,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404927050] [2024-05-12 13:35:04,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404927050] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:35:04,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:35:04,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:35:04,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603070542] [2024-05-12 13:35:04,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:35:04,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:35:04,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:35:04,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:35:04,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:35:04,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-05-12 13:35:04,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 482 transitions, 7385 flow. Second operand has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 9 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:35:04,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:35:04,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-05-12 13:35:04,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:35:07,505 INFO L124 PetriNetUnfolderBase]: 8050/13444 cut-off events. [2024-05-12 13:35:07,506 INFO L125 PetriNetUnfolderBase]: For 537360/537360 co-relation queries the response was YES. [2024-05-12 13:35:07,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103905 conditions, 13444 events. 8050/13444 cut-off events. For 537360/537360 co-relation queries the response was YES. Maximal size of possible extension queue 597. Compared 98206 event pairs, 3202 based on Foata normal form. 2/13014 useless extension candidates. Maximal degree in co-relation 103757. Up to 11392 conditions per place. [2024-05-12 13:35:07,707 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 481 selfloop transitions, 32 changer transitions 0/522 dead transitions. [2024-05-12 13:35:07,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 522 transitions, 8705 flow [2024-05-12 13:35:07,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:35:07,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:35:07,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 184 transitions. [2024-05-12 13:35:07,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48936170212765956 [2024-05-12 13:35:07,709 INFO L175 Difference]: Start difference. First operand has 315 places, 482 transitions, 7385 flow. Second operand 8 states and 184 transitions. [2024-05-12 13:35:07,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 522 transitions, 8705 flow [2024-05-12 13:35:08,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 522 transitions, 8321 flow, removed 122 selfloop flow, removed 7 redundant places. [2024-05-12 13:35:08,989 INFO L231 Difference]: Finished difference. Result has 316 places, 484 transitions, 7122 flow [2024-05-12 13:35:08,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7001, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=482, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=450, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7122, PETRI_PLACES=316, PETRI_TRANSITIONS=484} [2024-05-12 13:35:08,990 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 263 predicate places. [2024-05-12 13:35:08,990 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 484 transitions, 7122 flow [2024-05-12 13:35:08,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 9 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:35:08,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:35:08,990 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:35:08,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-05-12 13:35:08,990 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:35:08,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:35:08,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1084007842, now seen corresponding path program 2 times [2024-05-12 13:35:08,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:35:08,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201940429] [2024-05-12 13:35:08,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:35:08,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:35:09,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:35:10,325 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 13:35:10,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:35:10,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201940429] [2024-05-12 13:35:10,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201940429] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:35:10,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:35:10,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:35:10,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366269167] [2024-05-12 13:35:10,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:35:10,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:35:10,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:35:10,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:35:10,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:35:10,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-05-12 13:35:10,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 484 transitions, 7122 flow. Second operand has 10 states, 10 states have (on average 13.7) internal successors, (137), 10 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:35:10,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:35:10,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-05-12 13:35:10,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:35:13,491 INFO L124 PetriNetUnfolderBase]: 8078/13241 cut-off events. [2024-05-12 13:35:13,492 INFO L125 PetriNetUnfolderBase]: For 534068/534068 co-relation queries the response was YES. [2024-05-12 13:35:13,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103114 conditions, 13241 events. 8078/13241 cut-off events. For 534068/534068 co-relation queries the response was YES. Maximal size of possible extension queue 599. Compared 95082 event pairs, 3237 based on Foata normal form. 2/12869 useless extension candidates. Maximal degree in co-relation 102964. Up to 11499 conditions per place. [2024-05-12 13:35:13,715 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 488 selfloop transitions, 24 changer transitions 0/521 dead transitions. [2024-05-12 13:35:13,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 521 transitions, 8434 flow [2024-05-12 13:35:13,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:35:13,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:35:13,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 180 transitions. [2024-05-12 13:35:13,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4787234042553192 [2024-05-12 13:35:13,717 INFO L175 Difference]: Start difference. First operand has 316 places, 484 transitions, 7122 flow. Second operand 8 states and 180 transitions. [2024-05-12 13:35:13,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 521 transitions, 8434 flow [2024-05-12 13:35:15,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 521 transitions, 8329 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-05-12 13:35:15,198 INFO L231 Difference]: Finished difference. Result has 318 places, 486 transitions, 7126 flow [2024-05-12 13:35:15,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7017, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=484, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7126, PETRI_PLACES=318, PETRI_TRANSITIONS=486} [2024-05-12 13:35:15,198 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 265 predicate places. [2024-05-12 13:35:15,199 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 486 transitions, 7126 flow [2024-05-12 13:35:15,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.7) internal successors, (137), 10 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:35:15,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:35:15,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:35:15,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-05-12 13:35:15,199 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:35:15,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:35:15,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1084015282, now seen corresponding path program 3 times [2024-05-12 13:35:15,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:35:15,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388313237] [2024-05-12 13:35:15,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:35:15,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:35:15,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:35:16,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:35:16,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:35:16,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388313237] [2024-05-12 13:35:16,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388313237] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:35:16,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:35:16,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:35:16,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155880022] [2024-05-12 13:35:16,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:35:16,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:35:16,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:35:16,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:35:16,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:35:16,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-05-12 13:35:16,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 486 transitions, 7126 flow. Second operand has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 9 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:35:16,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:35:16,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-05-12 13:35:16,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:35:19,927 INFO L124 PetriNetUnfolderBase]: 8106/13283 cut-off events. [2024-05-12 13:35:19,928 INFO L125 PetriNetUnfolderBase]: For 544848/544848 co-relation queries the response was YES. [2024-05-12 13:35:20,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103669 conditions, 13283 events. 8106/13283 cut-off events. For 544848/544848 co-relation queries the response was YES. Maximal size of possible extension queue 603. Compared 95394 event pairs, 3236 based on Foata normal form. 2/12909 useless extension candidates. Maximal degree in co-relation 103518. Up to 11539 conditions per place. [2024-05-12 13:35:20,139 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 491 selfloop transitions, 23 changer transitions 0/523 dead transitions. [2024-05-12 13:35:20,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 523 transitions, 8436 flow [2024-05-12 13:35:20,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:35:20,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:35:20,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 179 transitions. [2024-05-12 13:35:20,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47606382978723405 [2024-05-12 13:35:20,140 INFO L175 Difference]: Start difference. First operand has 318 places, 486 transitions, 7126 flow. Second operand 8 states and 179 transitions. [2024-05-12 13:35:20,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 523 transitions, 8436 flow [2024-05-12 13:35:21,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 523 transitions, 8343 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-05-12 13:35:21,636 INFO L231 Difference]: Finished difference. Result has 320 places, 488 transitions, 7144 flow [2024-05-12 13:35:21,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7033, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=463, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7144, PETRI_PLACES=320, PETRI_TRANSITIONS=488} [2024-05-12 13:35:21,638 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 267 predicate places. [2024-05-12 13:35:21,638 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 488 transitions, 7144 flow [2024-05-12 13:35:21,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 9 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:35:21,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:35:21,638 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:35:21,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-05-12 13:35:21,639 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:35:21,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:35:21,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1522776082, now seen corresponding path program 4 times [2024-05-12 13:35:21,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:35:21,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127591621] [2024-05-12 13:35:21,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:35:21,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:35:21,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat