./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe004_power.opt_pso.opt_rmo.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe004_power.opt_pso.opt_rmo.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe004_power.opt_pso.opt_rmo.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe004_power.opt_pso.opt_rmo.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 01:53:40,522 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 01:53:40,588 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 01:53:40,593 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 01:53:40,593 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 01:53:40,619 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 01:53:40,620 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 01:53:40,620 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 01:53:40,621 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 01:53:40,625 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 01:53:40,625 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 01:53:40,626 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 01:53:40,626 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 01:53:40,627 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 01:53:40,628 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 01:53:40,628 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 01:53:40,628 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 01:53:40,629 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 01:53:40,629 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 01:53:40,629 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 01:53:40,630 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 01:53:40,630 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 01:53:40,630 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 01:53:40,631 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 01:53:40,631 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 01:53:40,631 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 01:53:40,631 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 01:53:40,632 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 01:53:40,632 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 01:53:40,633 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 01:53:40,634 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 01:53:40,634 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 01:53:40,634 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:53:40,634 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 01:53:40,635 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 01:53:40,635 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 01:53:40,635 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 01:53:40,635 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 01:53:40,636 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 01:53:40,636 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 01:53:40,636 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 01:53:40,636 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 01:53:40,637 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 01:53:40,637 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 01:53:40,858 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 01:53:40,878 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 01:53:40,881 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 01:53:40,882 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 01:53:40,883 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 01:53:40,884 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe004_power.opt_pso.opt_rmo.opt.yml/witness.yml [2024-06-28 01:53:41,132 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 01:53:41,136 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 01:53:41,137 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe004_power.opt_pso.opt_rmo.opt.i [2024-06-28 01:53:42,205 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 01:53:42,412 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 01:53:42,412 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe004_power.opt_pso.opt_rmo.opt.i [2024-06-28 01:53:42,443 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/676c59ab3/2a44bc7a55924013891698cf941f67d3/FLAG2a1af24a4 [2024-06-28 01:53:42,454 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/676c59ab3/2a44bc7a55924013891698cf941f67d3 [2024-06-28 01:53:42,454 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 01:53:42,455 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 01:53:42,456 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 01:53:42,456 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 01:53:42,460 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 01:53:42,461 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:53:41" (1/2) ... [2024-06-28 01:53:42,461 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f5b8b8c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:53:42, skipping insertion in model container [2024-06-28 01:53:42,461 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:53:41" (1/2) ... [2024-06-28 01:53:42,462 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@73097f2f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:53:42, skipping insertion in model container [2024-06-28 01:53:42,463 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:53:42" (2/2) ... [2024-06-28 01:53:42,463 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f5b8b8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:53:42, skipping insertion in model container [2024-06-28 01:53:42,463 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:53:42" (2/2) ... [2024-06-28 01:53:42,463 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 01:53:42,531 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 01:53:42,532 INFO L97 edCorrectnessWitness]: Location invariant before [L821-L821] ((((((((((((((((! multithreaded || x$r_buff1_thd3 == (_Bool)0) && (! multithreaded || ((__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1) || __unbuffered_p2_EBX == 2))) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (x$w_buff0 == 0 || x$w_buff0 == 2)) && (x$w_buff1 == 0 || x$w_buff1 == 2)) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)) && ((__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1) || __unbuffered_p2_EBX == 2)) && ((x == 0 || x == 1) || x == 2)) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2)) [2024-06-28 01:53:42,532 INFO L97 edCorrectnessWitness]: Location invariant before [L823-L823] ((((((((((((((((! multithreaded || x$r_buff1_thd3 == (_Bool)0) && (! multithreaded || ((__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1) || __unbuffered_p2_EBX == 2))) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (x$w_buff0 == 0 || x$w_buff0 == 2)) && (x$w_buff1 == 0 || x$w_buff1 == 2)) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)) && ((__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1) || __unbuffered_p2_EBX == 2)) && ((x == 0 || x == 1) || x == 2)) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2)) [2024-06-28 01:53:42,532 INFO L97 edCorrectnessWitness]: Location invariant before [L824-L824] ((((((((((((((((! multithreaded || x$r_buff1_thd3 == (_Bool)0) && (! multithreaded || ((__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1) || __unbuffered_p2_EBX == 2))) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (x$w_buff0 == 0 || x$w_buff0 == 2)) && (x$w_buff1 == 0 || x$w_buff1 == 2)) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)) && ((__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1) || __unbuffered_p2_EBX == 2)) && ((x == 0 || x == 1) || x == 2)) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2)) [2024-06-28 01:53:42,532 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 01:53:42,533 INFO L106 edCorrectnessWitness]: ghost_update [L819-L819] multithreaded = 1; [2024-06-28 01:53:42,572 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 01:53:42,722 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe004_power.opt_pso.opt_rmo.opt.i[967,980] [2024-06-28 01:53:42,886 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:53:42,895 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 01:53:42,939 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe004_power.opt_pso.opt_rmo.opt.i[967,980] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:53:43,040 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:53:43,069 INFO L206 MainTranslator]: Completed translation [2024-06-28 01:53:43,070 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:53:43 WrapperNode [2024-06-28 01:53:43,070 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 01:53:43,071 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 01:53:43,071 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 01:53:43,072 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 01:53:43,077 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:53:43" (1/1) ... [2024-06-28 01:53:43,092 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:53:43" (1/1) ... [2024-06-28 01:53:43,135 INFO L138 Inliner]: procedures = 175, calls = 42, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 139 [2024-06-28 01:53:43,135 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 01:53:43,136 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 01:53:43,136 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 01:53:43,136 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 01:53:43,144 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:53:43" (1/1) ... [2024-06-28 01:53:43,145 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:53:43" (1/1) ... [2024-06-28 01:53:43,148 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:53:43" (1/1) ... [2024-06-28 01:53:43,160 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-28 01:53:43,161 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:53:43" (1/1) ... [2024-06-28 01:53:43,161 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:53:43" (1/1) ... [2024-06-28 01:53:43,168 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:53:43" (1/1) ... [2024-06-28 01:53:43,169 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:53:43" (1/1) ... [2024-06-28 01:53:43,177 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:53:43" (1/1) ... [2024-06-28 01:53:43,179 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:53:43" (1/1) ... [2024-06-28 01:53:43,182 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 01:53:43,183 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 01:53:43,183 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 01:53:43,183 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 01:53:43,184 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:53:43" (1/1) ... [2024-06-28 01:53:43,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:53:43,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:53:43,228 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-28 01:53:43,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-28 01:53:43,261 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 01:53:43,262 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 01:53:43,262 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 01:53:43,262 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 01:53:43,262 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 01:53:43,263 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 01:53:43,263 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 01:53:43,263 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 01:53:43,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 01:53:43,263 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 01:53:43,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 01:53:43,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 01:53:43,265 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 01:53:43,411 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 01:53:43,414 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 01:53:43,712 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 01:53:43,712 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 01:53:43,846 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 01:53:43,847 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 01:53:43,847 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:53:43 BoogieIcfgContainer [2024-06-28 01:53:43,847 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 01:53:43,849 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 01:53:43,850 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 01:53:43,852 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 01:53:43,853 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:53:41" (1/4) ... [2024-06-28 01:53:43,854 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c34ed1a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:53:43, skipping insertion in model container [2024-06-28 01:53:43,854 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 01:53:42" (2/4) ... [2024-06-28 01:53:43,854 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c34ed1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:53:43, skipping insertion in model container [2024-06-28 01:53:43,855 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:53:43" (3/4) ... [2024-06-28 01:53:43,855 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c34ed1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:53:43, skipping insertion in model container [2024-06-28 01:53:43,855 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:53:43" (4/4) ... [2024-06-28 01:53:43,856 INFO L112 eAbstractionObserver]: Analyzing ICFG safe004_power.opt_pso.opt_rmo.opt.i [2024-06-28 01:53:43,870 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 01:53:43,870 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-28 01:53:43,870 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 01:53:43,940 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 01:53:43,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 46 transitions, 104 flow [2024-06-28 01:53:44,001 INFO L124 PetriNetUnfolderBase]: 1/43 cut-off events. [2024-06-28 01:53:44,001 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:53:44,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 43 events. 1/43 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 73 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2024-06-28 01:53:44,004 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 46 transitions, 104 flow [2024-06-28 01:53:44,007 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 43 transitions, 95 flow [2024-06-28 01:53:44,020 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 01:53:44,026 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;@35f43812, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 01:53:44,026 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-28 01:53:44,030 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 01:53:44,031 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 01:53:44,031 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:53:44,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:44,031 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:53:44,032 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:53:44,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:44,058 INFO L85 PathProgramCache]: Analyzing trace with hash 351296548, now seen corresponding path program 1 times [2024-06-28 01:53:44,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:44,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756569749] [2024-06-28 01:53:44,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:44,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:44,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:44,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:53:44,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:44,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756569749] [2024-06-28 01:53:44,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756569749] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:44,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:44,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:53:44,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308242472] [2024-06-28 01:53:44,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:44,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:53:44,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:44,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:53:44,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:53:44,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2024-06-28 01:53:44,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 43 transitions, 95 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:44,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:44,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2024-06-28 01:53:44,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:45,459 INFO L124 PetriNetUnfolderBase]: 3405/4954 cut-off events. [2024-06-28 01:53:45,460 INFO L125 PetriNetUnfolderBase]: For 47/47 co-relation queries the response was YES. [2024-06-28 01:53:45,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9995 conditions, 4954 events. 3405/4954 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 27744 event pairs, 1679 based on Foata normal form. 170/4849 useless extension candidates. Maximal degree in co-relation 9983. Up to 4912 conditions per place. [2024-06-28 01:53:45,489 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 43 selfloop transitions, 5 changer transitions 0/59 dead transitions. [2024-06-28 01:53:45,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 59 transitions, 229 flow [2024-06-28 01:53:45,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:53:45,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:53:45,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2024-06-28 01:53:45,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6884057971014492 [2024-06-28 01:53:45,499 INFO L175 Difference]: Start difference. First operand has 52 places, 43 transitions, 95 flow. Second operand 3 states and 95 transitions. [2024-06-28 01:53:45,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 59 transitions, 229 flow [2024-06-28 01:53:45,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 59 transitions, 224 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 01:53:45,506 INFO L231 Difference]: Finished difference. Result has 52 places, 46 transitions, 127 flow [2024-06-28 01:53:45,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=127, PETRI_PLACES=52, PETRI_TRANSITIONS=46} [2024-06-28 01:53:45,510 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 0 predicate places. [2024-06-28 01:53:45,510 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 46 transitions, 127 flow [2024-06-28 01:53:45,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:45,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:45,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:53:45,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 01:53:45,511 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:53:45,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:45,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1706182541, now seen corresponding path program 1 times [2024-06-28 01:53:45,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:45,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640196451] [2024-06-28 01:53:45,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:45,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:45,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:45,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:53:45,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:45,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640196451] [2024-06-28 01:53:45,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640196451] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:45,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:45,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 01:53:45,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328204515] [2024-06-28 01:53:45,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:45,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:53:45,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:45,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:53:45,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:53:45,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-28 01:53:45,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 46 transitions, 127 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:45,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:45,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-28 01:53:45,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:46,629 INFO L124 PetriNetUnfolderBase]: 5113/7448 cut-off events. [2024-06-28 01:53:46,629 INFO L125 PetriNetUnfolderBase]: For 794/794 co-relation queries the response was YES. [2024-06-28 01:53:46,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16565 conditions, 7448 events. 5113/7448 cut-off events. For 794/794 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 41873 event pairs, 2804 based on Foata normal form. 3/7099 useless extension candidates. Maximal degree in co-relation 16553. Up to 7275 conditions per place. [2024-06-28 01:53:46,664 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 60 selfloop transitions, 9 changer transitions 0/78 dead transitions. [2024-06-28 01:53:46,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 78 transitions, 350 flow [2024-06-28 01:53:46,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:53:46,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:53:46,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2024-06-28 01:53:46,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6304347826086957 [2024-06-28 01:53:46,668 INFO L175 Difference]: Start difference. First operand has 52 places, 46 transitions, 127 flow. Second operand 4 states and 116 transitions. [2024-06-28 01:53:46,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 78 transitions, 350 flow [2024-06-28 01:53:46,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 78 transitions, 342 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:53:46,671 INFO L231 Difference]: Finished difference. Result has 56 places, 54 transitions, 196 flow [2024-06-28 01:53:46,671 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=196, PETRI_PLACES=56, PETRI_TRANSITIONS=54} [2024-06-28 01:53:46,672 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 4 predicate places. [2024-06-28 01:53:46,672 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 54 transitions, 196 flow [2024-06-28 01:53:46,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:46,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:46,675 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:53:46,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 01:53:46,675 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:53:46,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:46,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1352050515, now seen corresponding path program 1 times [2024-06-28 01:53:46,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:46,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654868675] [2024-06-28 01:53:46,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:46,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:46,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:47,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:53:47,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:47,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654868675] [2024-06-28 01:53:47,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654868675] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:47,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:47,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:53:47,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222257223] [2024-06-28 01:53:47,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:47,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:53:47,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:47,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:53:47,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:53:47,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-28 01:53:47,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 54 transitions, 196 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:47,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:47,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-28 01:53:47,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:47,978 INFO L124 PetriNetUnfolderBase]: 5097/8053 cut-off events. [2024-06-28 01:53:47,978 INFO L125 PetriNetUnfolderBase]: For 2595/2595 co-relation queries the response was YES. [2024-06-28 01:53:47,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18732 conditions, 8053 events. 5097/8053 cut-off events. For 2595/2595 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 50518 event pairs, 2435 based on Foata normal form. 6/7502 useless extension candidates. Maximal degree in co-relation 18717. Up to 7224 conditions per place. [2024-06-28 01:53:48,018 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 72 selfloop transitions, 16 changer transitions 0/97 dead transitions. [2024-06-28 01:53:48,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 97 transitions, 515 flow [2024-06-28 01:53:48,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:53:48,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:53:48,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 139 transitions. [2024-06-28 01:53:48,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6043478260869565 [2024-06-28 01:53:48,022 INFO L175 Difference]: Start difference. First operand has 56 places, 54 transitions, 196 flow. Second operand 5 states and 139 transitions. [2024-06-28 01:53:48,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 97 transitions, 515 flow [2024-06-28 01:53:48,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 97 transitions, 507 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-06-28 01:53:48,027 INFO L231 Difference]: Finished difference. Result has 63 places, 69 transitions, 345 flow [2024-06-28 01:53:48,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=345, PETRI_PLACES=63, PETRI_TRANSITIONS=69} [2024-06-28 01:53:48,028 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 11 predicate places. [2024-06-28 01:53:48,028 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 69 transitions, 345 flow [2024-06-28 01:53:48,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:48,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:48,029 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:53:48,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 01:53:48,029 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:53:48,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:48,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1359446230, now seen corresponding path program 1 times [2024-06-28 01:53:48,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:48,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278195942] [2024-06-28 01:53:48,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:48,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:48,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:48,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:53:48,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:48,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278195942] [2024-06-28 01:53:48,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278195942] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:48,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:48,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:53:48,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617000485] [2024-06-28 01:53:48,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:48,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:53:48,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:48,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:53:48,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:53:48,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 46 [2024-06-28 01:53:48,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 69 transitions, 345 flow. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:48,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:48,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 46 [2024-06-28 01:53:48,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:48,455 INFO L124 PetriNetUnfolderBase]: 1299/2664 cut-off events. [2024-06-28 01:53:48,455 INFO L125 PetriNetUnfolderBase]: For 1700/1765 co-relation queries the response was YES. [2024-06-28 01:53:48,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5927 conditions, 2664 events. 1299/2664 cut-off events. For 1700/1765 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 19988 event pairs, 413 based on Foata normal form. 25/2498 useless extension candidates. Maximal degree in co-relation 5907. Up to 1624 conditions per place. [2024-06-28 01:53:48,468 INFO L140 encePairwiseOnDemand]: 43/46 looper letters, 35 selfloop transitions, 8 changer transitions 0/75 dead transitions. [2024-06-28 01:53:48,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 75 transitions, 404 flow [2024-06-28 01:53:48,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:53:48,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:53:48,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 104 transitions. [2024-06-28 01:53:48,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7536231884057971 [2024-06-28 01:53:48,470 INFO L175 Difference]: Start difference. First operand has 63 places, 69 transitions, 345 flow. Second operand 3 states and 104 transitions. [2024-06-28 01:53:48,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 75 transitions, 404 flow [2024-06-28 01:53:48,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 75 transitions, 398 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-06-28 01:53:48,475 INFO L231 Difference]: Finished difference. Result has 64 places, 62 transitions, 298 flow [2024-06-28 01:53:48,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=298, PETRI_PLACES=64, PETRI_TRANSITIONS=62} [2024-06-28 01:53:48,476 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 12 predicate places. [2024-06-28 01:53:48,476 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 62 transitions, 298 flow [2024-06-28 01:53:48,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:48,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:48,477 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:53:48,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 01:53:48,477 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:53:48,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:48,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1981792872, now seen corresponding path program 1 times [2024-06-28 01:53:48,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:48,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896911682] [2024-06-28 01:53:48,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:48,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:48,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:49,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:53:49,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:49,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896911682] [2024-06-28 01:53:49,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896911682] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:49,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:49,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:53:49,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609908872] [2024-06-28 01:53:49,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:49,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:53:49,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:49,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:53:49,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:53:49,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-28 01:53:49,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 62 transitions, 298 flow. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:49,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:49,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-28 01:53:49,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:50,289 INFO L124 PetriNetUnfolderBase]: 4323/6853 cut-off events. [2024-06-28 01:53:50,290 INFO L125 PetriNetUnfolderBase]: For 5490/5490 co-relation queries the response was YES. [2024-06-28 01:53:50,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17186 conditions, 6853 events. 4323/6853 cut-off events. For 5490/5490 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 41119 event pairs, 2161 based on Foata normal form. 6/6640 useless extension candidates. Maximal degree in co-relation 17164. Up to 6094 conditions per place. [2024-06-28 01:53:50,310 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 73 selfloop transitions, 16 changer transitions 1/99 dead transitions. [2024-06-28 01:53:50,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 99 transitions, 574 flow [2024-06-28 01:53:50,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:53:50,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:53:50,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 156 transitions. [2024-06-28 01:53:50,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5652173913043478 [2024-06-28 01:53:50,312 INFO L175 Difference]: Start difference. First operand has 64 places, 62 transitions, 298 flow. Second operand 6 states and 156 transitions. [2024-06-28 01:53:50,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 99 transitions, 574 flow [2024-06-28 01:53:50,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 99 transitions, 556 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:53:50,321 INFO L231 Difference]: Finished difference. Result has 67 places, 63 transitions, 336 flow [2024-06-28 01:53:50,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=336, PETRI_PLACES=67, PETRI_TRANSITIONS=63} [2024-06-28 01:53:50,324 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 15 predicate places. [2024-06-28 01:53:50,324 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 63 transitions, 336 flow [2024-06-28 01:53:50,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:50,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:50,325 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:53:50,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 01:53:50,325 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:53:50,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:50,326 INFO L85 PathProgramCache]: Analyzing trace with hash -759188824, now seen corresponding path program 1 times [2024-06-28 01:53:50,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:50,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379758792] [2024-06-28 01:53:50,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:50,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:50,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:50,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:53:50,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:50,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379758792] [2024-06-28 01:53:50,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379758792] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:50,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:50,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:53:50,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200213878] [2024-06-28 01:53:50,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:50,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:53:50,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:50,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:53:50,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:53:50,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-28 01:53:50,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 63 transitions, 336 flow. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:50,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:50,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-28 01:53:50,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:51,460 INFO L124 PetriNetUnfolderBase]: 3309/5377 cut-off events. [2024-06-28 01:53:51,461 INFO L125 PetriNetUnfolderBase]: For 5464/5538 co-relation queries the response was YES. [2024-06-28 01:53:51,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14025 conditions, 5377 events. 3309/5377 cut-off events. For 5464/5538 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 32769 event pairs, 1615 based on Foata normal form. 8/5025 useless extension candidates. Maximal degree in co-relation 14001. Up to 4682 conditions per place. [2024-06-28 01:53:51,486 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 65 selfloop transitions, 11 changer transitions 0/91 dead transitions. [2024-06-28 01:53:51,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 91 transitions, 588 flow [2024-06-28 01:53:51,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:53:51,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:53:51,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 118 transitions. [2024-06-28 01:53:51,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5130434782608696 [2024-06-28 01:53:51,488 INFO L175 Difference]: Start difference. First operand has 67 places, 63 transitions, 336 flow. Second operand 5 states and 118 transitions. [2024-06-28 01:53:51,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 91 transitions, 588 flow [2024-06-28 01:53:51,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 91 transitions, 544 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-28 01:53:51,492 INFO L231 Difference]: Finished difference. Result has 68 places, 72 transitions, 400 flow [2024-06-28 01:53:51,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=400, PETRI_PLACES=68, PETRI_TRANSITIONS=72} [2024-06-28 01:53:51,493 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 16 predicate places. [2024-06-28 01:53:51,493 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 72 transitions, 400 flow [2024-06-28 01:53:51,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:51,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:51,494 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:53:51,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 01:53:51,494 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:53:51,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:51,495 INFO L85 PathProgramCache]: Analyzing trace with hash -2060015213, now seen corresponding path program 1 times [2024-06-28 01:53:51,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:51,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368827816] [2024-06-28 01:53:51,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:51,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:51,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:52,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:53:52,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:52,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368827816] [2024-06-28 01:53:52,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368827816] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:52,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:52,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:53:52,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999259069] [2024-06-28 01:53:52,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:52,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:53:52,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:52,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:53:52,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:53:52,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:53:52,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 72 transitions, 400 flow. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:52,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:52,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:53:52,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:52,967 INFO L124 PetriNetUnfolderBase]: 4404/6985 cut-off events. [2024-06-28 01:53:52,969 INFO L125 PetriNetUnfolderBase]: For 9137/9146 co-relation queries the response was YES. [2024-06-28 01:53:52,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19928 conditions, 6985 events. 4404/6985 cut-off events. For 9137/9146 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 41874 event pairs, 2071 based on Foata normal form. 10/6769 useless extension candidates. Maximal degree in co-relation 19901. Up to 6177 conditions per place. [2024-06-28 01:53:53,001 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 92 selfloop transitions, 20 changer transitions 0/119 dead transitions. [2024-06-28 01:53:53,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 119 transitions, 838 flow [2024-06-28 01:53:53,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:53:53,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:53:53,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 149 transitions. [2024-06-28 01:53:53,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46273291925465837 [2024-06-28 01:53:53,003 INFO L175 Difference]: Start difference. First operand has 68 places, 72 transitions, 400 flow. Second operand 7 states and 149 transitions. [2024-06-28 01:53:53,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 119 transitions, 838 flow [2024-06-28 01:53:53,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 119 transitions, 818 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-28 01:53:53,010 INFO L231 Difference]: Finished difference. Result has 76 places, 89 transitions, 575 flow [2024-06-28 01:53:53,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=575, PETRI_PLACES=76, PETRI_TRANSITIONS=89} [2024-06-28 01:53:53,012 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 24 predicate places. [2024-06-28 01:53:53,012 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 89 transitions, 575 flow [2024-06-28 01:53:53,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:53,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:53,012 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:53:53,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 01:53:53,013 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:53:53,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:53,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1862086215, now seen corresponding path program 1 times [2024-06-28 01:53:53,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:53,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237153156] [2024-06-28 01:53:53,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:53,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:53,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:53,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:53:53,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:53,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237153156] [2024-06-28 01:53:53,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237153156] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:53,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:53,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:53:53,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399686786] [2024-06-28 01:53:53,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:53,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:53:53,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:53,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:53:53,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:53:53,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:53:53,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 89 transitions, 575 flow. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:53,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:53,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:53:53,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:54,334 INFO L124 PetriNetUnfolderBase]: 4449/7057 cut-off events. [2024-06-28 01:53:54,334 INFO L125 PetriNetUnfolderBase]: For 13598/13598 co-relation queries the response was YES. [2024-06-28 01:53:54,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22322 conditions, 7057 events. 4449/7057 cut-off events. For 13598/13598 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 42115 event pairs, 2225 based on Foata normal form. 2/6832 useless extension candidates. Maximal degree in co-relation 22290. Up to 6322 conditions per place. [2024-06-28 01:53:54,369 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 101 selfloop transitions, 21 changer transitions 0/129 dead transitions. [2024-06-28 01:53:54,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 129 transitions, 979 flow [2024-06-28 01:53:54,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:53:54,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:53:54,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 153 transitions. [2024-06-28 01:53:54,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4751552795031056 [2024-06-28 01:53:54,371 INFO L175 Difference]: Start difference. First operand has 76 places, 89 transitions, 575 flow. Second operand 7 states and 153 transitions. [2024-06-28 01:53:54,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 129 transitions, 979 flow [2024-06-28 01:53:54,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 129 transitions, 963 flow, removed 7 selfloop flow, removed 1 redundant places. [2024-06-28 01:53:54,380 INFO L231 Difference]: Finished difference. Result has 83 places, 99 transitions, 708 flow [2024-06-28 01:53:54,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=561, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=708, PETRI_PLACES=83, PETRI_TRANSITIONS=99} [2024-06-28 01:53:54,381 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 31 predicate places. [2024-06-28 01:53:54,381 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 99 transitions, 708 flow [2024-06-28 01:53:54,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:54,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:54,381 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:53:54,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 01:53:54,382 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:53:54,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:54,382 INFO L85 PathProgramCache]: Analyzing trace with hash -940717983, now seen corresponding path program 2 times [2024-06-28 01:53:54,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:54,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303995545] [2024-06-28 01:53:54,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:54,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:54,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:54,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:53:54,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:54,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303995545] [2024-06-28 01:53:54,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303995545] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:54,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:54,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:53:54,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393585629] [2024-06-28 01:53:54,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:54,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:53:54,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:54,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:53:54,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:53:54,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:53:54,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 99 transitions, 708 flow. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:54,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:54,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:53:54,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:55,678 INFO L124 PetriNetUnfolderBase]: 4475/7096 cut-off events. [2024-06-28 01:53:55,679 INFO L125 PetriNetUnfolderBase]: For 15803/15803 co-relation queries the response was YES. [2024-06-28 01:53:55,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23126 conditions, 7096 events. 4475/7096 cut-off events. For 15803/15803 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 42326 event pairs, 2218 based on Foata normal form. 2/6870 useless extension candidates. Maximal degree in co-relation 23090. Up to 6342 conditions per place. [2024-06-28 01:53:55,712 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 99 selfloop transitions, 21 changer transitions 0/127 dead transitions. [2024-06-28 01:53:55,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 127 transitions, 1058 flow [2024-06-28 01:53:55,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:53:55,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:53:55,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 132 transitions. [2024-06-28 01:53:55,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4782608695652174 [2024-06-28 01:53:55,714 INFO L175 Difference]: Start difference. First operand has 83 places, 99 transitions, 708 flow. Second operand 6 states and 132 transitions. [2024-06-28 01:53:55,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 127 transitions, 1058 flow [2024-06-28 01:53:55,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 127 transitions, 1031 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-06-28 01:53:55,726 INFO L231 Difference]: Finished difference. Result has 87 places, 102 transitions, 771 flow [2024-06-28 01:53:55,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=681, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=771, PETRI_PLACES=87, PETRI_TRANSITIONS=102} [2024-06-28 01:53:55,727 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 35 predicate places. [2024-06-28 01:53:55,727 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 102 transitions, 771 flow [2024-06-28 01:53:55,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:55,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:55,728 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:53:55,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 01:53:55,728 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:53:55,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:55,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1893901031, now seen corresponding path program 3 times [2024-06-28 01:53:55,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:55,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232022715] [2024-06-28 01:53:55,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:55,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:55,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:56,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:53:56,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:56,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232022715] [2024-06-28 01:53:56,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232022715] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:56,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:56,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:53:56,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360003411] [2024-06-28 01:53:56,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:56,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:53:56,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:56,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:53:56,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:53:56,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:53:56,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 102 transitions, 771 flow. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:56,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:56,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:53:56,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:57,009 INFO L124 PetriNetUnfolderBase]: 4462/7073 cut-off events. [2024-06-28 01:53:57,009 INFO L125 PetriNetUnfolderBase]: For 18135/18147 co-relation queries the response was YES. [2024-06-28 01:53:57,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23356 conditions, 7073 events. 4462/7073 cut-off events. For 18135/18147 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 42322 event pairs, 2106 based on Foata normal form. 12/6855 useless extension candidates. Maximal degree in co-relation 23318. Up to 6211 conditions per place. [2024-06-28 01:53:57,041 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 95 selfloop transitions, 28 changer transitions 0/130 dead transitions. [2024-06-28 01:53:57,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 130 transitions, 1122 flow [2024-06-28 01:53:57,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:53:57,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:53:57,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 135 transitions. [2024-06-28 01:53:57,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4891304347826087 [2024-06-28 01:53:57,043 INFO L175 Difference]: Start difference. First operand has 87 places, 102 transitions, 771 flow. Second operand 6 states and 135 transitions. [2024-06-28 01:53:57,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 130 transitions, 1122 flow [2024-06-28 01:53:57,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 130 transitions, 1064 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-28 01:53:57,059 INFO L231 Difference]: Finished difference. Result has 90 places, 104 transitions, 812 flow [2024-06-28 01:53:57,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=717, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=812, PETRI_PLACES=90, PETRI_TRANSITIONS=104} [2024-06-28 01:53:57,060 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 38 predicate places. [2024-06-28 01:53:57,060 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 104 transitions, 812 flow [2024-06-28 01:53:57,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:57,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:57,061 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:53:57,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 01:53:57,061 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:53:57,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:57,061 INFO L85 PathProgramCache]: Analyzing trace with hash 564039719, now seen corresponding path program 1 times [2024-06-28 01:53:57,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:57,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833093769] [2024-06-28 01:53:57,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:57,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:57,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:57,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:53:57,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:57,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833093769] [2024-06-28 01:53:57,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833093769] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:57,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:57,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:53:57,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929292901] [2024-06-28 01:53:57,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:57,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:53:57,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:57,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:53:57,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:53:57,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:53:57,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 104 transitions, 812 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:57,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:57,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:53:57,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:58,853 INFO L124 PetriNetUnfolderBase]: 4581/7249 cut-off events. [2024-06-28 01:53:58,853 INFO L125 PetriNetUnfolderBase]: For 18868/18874 co-relation queries the response was YES. [2024-06-28 01:53:58,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24097 conditions, 7249 events. 4581/7249 cut-off events. For 18868/18874 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 43469 event pairs, 1348 based on Foata normal form. 12/7027 useless extension candidates. Maximal degree in co-relation 24057. Up to 6104 conditions per place. [2024-06-28 01:53:58,906 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 126 selfloop transitions, 46 changer transitions 0/179 dead transitions. [2024-06-28 01:53:58,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 179 transitions, 1640 flow [2024-06-28 01:53:58,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:53:58,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:53:58,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2024-06-28 01:53:58,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5217391304347826 [2024-06-28 01:53:58,908 INFO L175 Difference]: Start difference. First operand has 90 places, 104 transitions, 812 flow. Second operand 7 states and 168 transitions. [2024-06-28 01:53:58,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 179 transitions, 1640 flow [2024-06-28 01:53:58,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 179 transitions, 1577 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-28 01:53:58,933 INFO L231 Difference]: Finished difference. Result has 96 places, 132 transitions, 1164 flow [2024-06-28 01:53:58,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=768, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1164, PETRI_PLACES=96, PETRI_TRANSITIONS=132} [2024-06-28 01:53:58,934 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 44 predicate places. [2024-06-28 01:53:58,934 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 132 transitions, 1164 flow [2024-06-28 01:53:58,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:58,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:58,934 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:53:58,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 01:53:58,935 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:53:58,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:58,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1404593071, now seen corresponding path program 1 times [2024-06-28 01:53:58,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:58,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767541405] [2024-06-28 01:53:58,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:58,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:58,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:59,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:53:59,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:59,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767541405] [2024-06-28 01:53:59,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767541405] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:59,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:59,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:53:59,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010399733] [2024-06-28 01:53:59,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:59,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:53:59,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:59,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:53:59,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:53:59,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:53:59,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 132 transitions, 1164 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:59,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:59,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:53:59,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:54:00,561 INFO L124 PetriNetUnfolderBase]: 4626/7302 cut-off events. [2024-06-28 01:54:00,561 INFO L125 PetriNetUnfolderBase]: For 26472/26472 co-relation queries the response was YES. [2024-06-28 01:54:00,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27470 conditions, 7302 events. 4626/7302 cut-off events. For 26472/26472 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 43357 event pairs, 1538 based on Foata normal form. 4/7079 useless extension candidates. Maximal degree in co-relation 27427. Up to 6498 conditions per place. [2024-06-28 01:54:00,599 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 137 selfloop transitions, 33 changer transitions 0/177 dead transitions. [2024-06-28 01:54:00,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 177 transitions, 1687 flow [2024-06-28 01:54:00,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:54:00,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:54:00,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2024-06-28 01:54:00,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4968944099378882 [2024-06-28 01:54:00,602 INFO L175 Difference]: Start difference. First operand has 96 places, 132 transitions, 1164 flow. Second operand 7 states and 160 transitions. [2024-06-28 01:54:00,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 177 transitions, 1687 flow [2024-06-28 01:54:00,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 177 transitions, 1627 flow, removed 19 selfloop flow, removed 2 redundant places. [2024-06-28 01:54:00,641 INFO L231 Difference]: Finished difference. Result has 102 places, 141 transitions, 1269 flow [2024-06-28 01:54:00,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1111, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1269, PETRI_PLACES=102, PETRI_TRANSITIONS=141} [2024-06-28 01:54:00,642 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 50 predicate places. [2024-06-28 01:54:00,642 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 141 transitions, 1269 flow [2024-06-28 01:54:00,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:00,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:54:00,643 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:54:00,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 01:54:00,643 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:54:00,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:54:00,643 INFO L85 PathProgramCache]: Analyzing trace with hash 127032891, now seen corresponding path program 2 times [2024-06-28 01:54:00,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:54:00,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349113736] [2024-06-28 01:54:00,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:54:00,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:54:00,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:54:01,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:54:01,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:54:01,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349113736] [2024-06-28 01:54:01,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349113736] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:54:01,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:54:01,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:54:01,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041844099] [2024-06-28 01:54:01,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:54:01,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:54:01,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:54:01,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:54:01,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:54:01,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:54:01,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 141 transitions, 1269 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:01,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:54:01,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:54:01,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:54:02,141 INFO L124 PetriNetUnfolderBase]: 4700/7404 cut-off events. [2024-06-28 01:54:02,141 INFO L125 PetriNetUnfolderBase]: For 30298/30298 co-relation queries the response was YES. [2024-06-28 01:54:02,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28652 conditions, 7404 events. 4700/7404 cut-off events. For 30298/30298 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 43871 event pairs, 1532 based on Foata normal form. 4/7181 useless extension candidates. Maximal degree in co-relation 28606. Up to 6513 conditions per place. [2024-06-28 01:54:02,188 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 140 selfloop transitions, 42 changer transitions 0/189 dead transitions. [2024-06-28 01:54:02,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 189 transitions, 1917 flow [2024-06-28 01:54:02,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:54:02,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:54:02,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 161 transitions. [2024-06-28 01:54:02,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:54:02,189 INFO L175 Difference]: Start difference. First operand has 102 places, 141 transitions, 1269 flow. Second operand 7 states and 161 transitions. [2024-06-28 01:54:02,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 189 transitions, 1917 flow [2024-06-28 01:54:02,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 189 transitions, 1846 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-28 01:54:02,238 INFO L231 Difference]: Finished difference. Result has 106 places, 152 transitions, 1443 flow [2024-06-28 01:54:02,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1198, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1443, PETRI_PLACES=106, PETRI_TRANSITIONS=152} [2024-06-28 01:54:02,239 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 54 predicate places. [2024-06-28 01:54:02,239 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 152 transitions, 1443 flow [2024-06-28 01:54:02,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:02,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:54:02,239 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:54:02,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 01:54:02,240 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:54:02,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:54:02,240 INFO L85 PathProgramCache]: Analyzing trace with hash 305086971, now seen corresponding path program 3 times [2024-06-28 01:54:02,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:54:02,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075763541] [2024-06-28 01:54:02,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:54:02,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:54:02,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:54:02,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:54:02,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:54:02,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075763541] [2024-06-28 01:54:02,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075763541] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:54:02,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:54:02,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:54:02,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447216974] [2024-06-28 01:54:02,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:54:02,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:54:02,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:54:02,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:54:02,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:54:02,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:54:02,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 152 transitions, 1443 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:02,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:54:02,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:54:02,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:54:03,759 INFO L124 PetriNetUnfolderBase]: 4780/7522 cut-off events. [2024-06-28 01:54:03,760 INFO L125 PetriNetUnfolderBase]: For 35332/35338 co-relation queries the response was YES. [2024-06-28 01:54:03,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29813 conditions, 7522 events. 4780/7522 cut-off events. For 35332/35338 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 44864 event pairs, 1361 based on Foata normal form. 16/7305 useless extension candidates. Maximal degree in co-relation 29766. Up to 6155 conditions per place. [2024-06-28 01:54:03,803 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 137 selfloop transitions, 72 changer transitions 0/216 dead transitions. [2024-06-28 01:54:03,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 216 transitions, 2312 flow [2024-06-28 01:54:03,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:54:03,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:54:03,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-06-28 01:54:03,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5279503105590062 [2024-06-28 01:54:03,805 INFO L175 Difference]: Start difference. First operand has 106 places, 152 transitions, 1443 flow. Second operand 7 states and 170 transitions. [2024-06-28 01:54:03,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 216 transitions, 2312 flow [2024-06-28 01:54:03,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 216 transitions, 2264 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-06-28 01:54:03,853 INFO L231 Difference]: Finished difference. Result has 112 places, 175 transitions, 1840 flow [2024-06-28 01:54:03,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1395, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1840, PETRI_PLACES=112, PETRI_TRANSITIONS=175} [2024-06-28 01:54:03,853 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 60 predicate places. [2024-06-28 01:54:03,854 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 175 transitions, 1840 flow [2024-06-28 01:54:03,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:03,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:54:03,854 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:54:03,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 01:54:03,854 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:54:03,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:54:03,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1418331502, now seen corresponding path program 1 times [2024-06-28 01:54:03,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:54:03,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485210734] [2024-06-28 01:54:03,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:54:03,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:54:03,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:54:04,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:54:04,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:54:04,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485210734] [2024-06-28 01:54:04,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485210734] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:54:04,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:54:04,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:54:04,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72663070] [2024-06-28 01:54:04,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:54:04,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:54:04,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:54:04,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:54:04,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:54:04,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:54:04,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 175 transitions, 1840 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:04,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:54:04,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:54:04,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:54:05,664 INFO L124 PetriNetUnfolderBase]: 4843/7579 cut-off events. [2024-06-28 01:54:05,664 INFO L125 PetriNetUnfolderBase]: For 43338/43350 co-relation queries the response was YES. [2024-06-28 01:54:05,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32858 conditions, 7579 events. 4843/7579 cut-off events. For 43338/43350 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 44769 event pairs, 1398 based on Foata normal form. 16/7374 useless extension candidates. Maximal degree in co-relation 32807. Up to 6636 conditions per place. [2024-06-28 01:54:05,718 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 168 selfloop transitions, 58 changer transitions 0/233 dead transitions. [2024-06-28 01:54:05,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 233 transitions, 2615 flow [2024-06-28 01:54:05,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:54:05,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:54:05,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 181 transitions. [2024-06-28 01:54:05,720 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49184782608695654 [2024-06-28 01:54:05,720 INFO L175 Difference]: Start difference. First operand has 112 places, 175 transitions, 1840 flow. Second operand 8 states and 181 transitions. [2024-06-28 01:54:05,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 233 transitions, 2615 flow [2024-06-28 01:54:05,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 233 transitions, 2533 flow, removed 30 selfloop flow, removed 2 redundant places. [2024-06-28 01:54:05,796 INFO L231 Difference]: Finished difference. Result has 119 places, 188 transitions, 2049 flow [2024-06-28 01:54:05,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1760, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2049, PETRI_PLACES=119, PETRI_TRANSITIONS=188} [2024-06-28 01:54:05,797 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 67 predicate places. [2024-06-28 01:54:05,797 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 188 transitions, 2049 flow [2024-06-28 01:54:05,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:05,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:54:05,798 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:54:05,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 01:54:05,798 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:54:05,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:54:05,798 INFO L85 PathProgramCache]: Analyzing trace with hash 589047846, now seen corresponding path program 1 times [2024-06-28 01:54:05,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:54:05,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342797979] [2024-06-28 01:54:05,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:54:05,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:54:05,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:54:06,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:54:06,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:54:06,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342797979] [2024-06-28 01:54:06,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342797979] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:54:06,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:54:06,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:54:06,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328233574] [2024-06-28 01:54:06,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:54:06,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:54:06,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:54:06,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:54:06,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:54:06,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:54:06,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 188 transitions, 2049 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:06,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:54:06,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:54:06,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:54:07,642 INFO L124 PetriNetUnfolderBase]: 4844/7575 cut-off events. [2024-06-28 01:54:07,642 INFO L125 PetriNetUnfolderBase]: For 49779/49779 co-relation queries the response was YES. [2024-06-28 01:54:07,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34355 conditions, 7575 events. 4844/7575 cut-off events. For 49779/49779 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 44625 event pairs, 1548 based on Foata normal form. 2/7361 useless extension candidates. Maximal degree in co-relation 34301. Up to 6789 conditions per place. [2024-06-28 01:54:07,708 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 183 selfloop transitions, 41 changer transitions 0/231 dead transitions. [2024-06-28 01:54:07,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 231 transitions, 2716 flow [2024-06-28 01:54:07,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:54:07,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:54:07,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 161 transitions. [2024-06-28 01:54:07,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:54:07,710 INFO L175 Difference]: Start difference. First operand has 119 places, 188 transitions, 2049 flow. Second operand 7 states and 161 transitions. [2024-06-28 01:54:07,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 231 transitions, 2716 flow [2024-06-28 01:54:07,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 231 transitions, 2549 flow, removed 54 selfloop flow, removed 4 redundant places. [2024-06-28 01:54:07,841 INFO L231 Difference]: Finished difference. Result has 123 places, 197 transitions, 2110 flow [2024-06-28 01:54:07,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1892, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2110, PETRI_PLACES=123, PETRI_TRANSITIONS=197} [2024-06-28 01:54:07,842 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 71 predicate places. [2024-06-28 01:54:07,843 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 197 transitions, 2110 flow [2024-06-28 01:54:07,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:07,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:54:07,843 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:54:07,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 01:54:07,843 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:54:07,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:54:07,843 INFO L85 PathProgramCache]: Analyzing trace with hash -360693724, now seen corresponding path program 1 times [2024-06-28 01:54:07,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:54:07,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962195874] [2024-06-28 01:54:07,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:54:07,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:54:07,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:54:08,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:54:08,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:54:08,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962195874] [2024-06-28 01:54:08,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962195874] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:54:08,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:54:08,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:54:08,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968025949] [2024-06-28 01:54:08,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:54:08,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:54:08,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:54:08,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:54:08,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:54:08,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:54:08,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 197 transitions, 2110 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:08,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:54:08,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:54:08,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:54:09,488 INFO L124 PetriNetUnfolderBase]: 4886/7643 cut-off events. [2024-06-28 01:54:09,488 INFO L125 PetriNetUnfolderBase]: For 53170/53191 co-relation queries the response was YES. [2024-06-28 01:54:09,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34829 conditions, 7643 events. 4886/7643 cut-off events. For 53170/53191 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 45061 event pairs, 1558 based on Foata normal form. 18/7438 useless extension candidates. Maximal degree in co-relation 34772. Up to 6824 conditions per place. [2024-06-28 01:54:09,538 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 190 selfloop transitions, 39 changer transitions 0/236 dead transitions. [2024-06-28 01:54:09,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 236 transitions, 2734 flow [2024-06-28 01:54:09,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:54:09,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:54:09,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 159 transitions. [2024-06-28 01:54:09,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4937888198757764 [2024-06-28 01:54:09,540 INFO L175 Difference]: Start difference. First operand has 123 places, 197 transitions, 2110 flow. Second operand 7 states and 159 transitions. [2024-06-28 01:54:09,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 236 transitions, 2734 flow [2024-06-28 01:54:09,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 236 transitions, 2678 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-28 01:54:09,623 INFO L231 Difference]: Finished difference. Result has 127 places, 201 transitions, 2191 flow [2024-06-28 01:54:09,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2054, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2191, PETRI_PLACES=127, PETRI_TRANSITIONS=201} [2024-06-28 01:54:09,624 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 75 predicate places. [2024-06-28 01:54:09,624 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 201 transitions, 2191 flow [2024-06-28 01:54:09,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:09,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:54:09,624 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:54:09,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 01:54:09,624 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:54:09,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:54:09,624 INFO L85 PathProgramCache]: Analyzing trace with hash 592893582, now seen corresponding path program 2 times [2024-06-28 01:54:09,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:54:09,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21181607] [2024-06-28 01:54:09,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:54:09,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:54:09,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:54:10,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:54:10,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:54:10,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21181607] [2024-06-28 01:54:10,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21181607] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:54:10,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:54:10,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:54:10,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492257743] [2024-06-28 01:54:10,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:54:10,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:54:10,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:54:10,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:54:10,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:54:10,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:54:10,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 201 transitions, 2191 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:10,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:54:10,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:54:10,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:54:11,239 INFO L124 PetriNetUnfolderBase]: 4918/7689 cut-off events. [2024-06-28 01:54:11,239 INFO L125 PetriNetUnfolderBase]: For 57354/57360 co-relation queries the response was YES. [2024-06-28 01:54:11,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35399 conditions, 7689 events. 4918/7689 cut-off events. For 57354/57360 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 45303 event pairs, 1445 based on Foata normal form. 12/7477 useless extension candidates. Maximal degree in co-relation 35341. Up to 6279 conditions per place. [2024-06-28 01:54:11,288 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 141 selfloop transitions, 97 changer transitions 0/245 dead transitions. [2024-06-28 01:54:11,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 245 transitions, 2995 flow [2024-06-28 01:54:11,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:54:11,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:54:11,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-06-28 01:54:11,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5248447204968945 [2024-06-28 01:54:11,290 INFO L175 Difference]: Start difference. First operand has 127 places, 201 transitions, 2191 flow. Second operand 7 states and 169 transitions. [2024-06-28 01:54:11,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 245 transitions, 2995 flow [2024-06-28 01:54:11,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 245 transitions, 2910 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 01:54:11,372 INFO L231 Difference]: Finished difference. Result has 130 places, 207 transitions, 2428 flow [2024-06-28 01:54:11,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2106, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2428, PETRI_PLACES=130, PETRI_TRANSITIONS=207} [2024-06-28 01:54:11,372 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 78 predicate places. [2024-06-28 01:54:11,373 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 207 transitions, 2428 flow [2024-06-28 01:54:11,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:11,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:54:11,373 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:54:11,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 01:54:11,373 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:54:11,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:54:11,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1922757312, now seen corresponding path program 3 times [2024-06-28 01:54:11,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:54:11,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183358476] [2024-06-28 01:54:11,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:54:11,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:54:11,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:54:11,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:54:11,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:54:11,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183358476] [2024-06-28 01:54:11,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183358476] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:54:11,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:54:11,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:54:11,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568174136] [2024-06-28 01:54:11,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:54:11,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:54:11,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:54:11,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:54:11,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:54:11,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:54:11,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 207 transitions, 2428 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:11,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:54:11,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:54:11,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:54:12,837 INFO L124 PetriNetUnfolderBase]: 4934/7695 cut-off events. [2024-06-28 01:54:12,837 INFO L125 PetriNetUnfolderBase]: For 63859/63865 co-relation queries the response was YES. [2024-06-28 01:54:12,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36740 conditions, 7695 events. 4934/7695 cut-off events. For 63859/63865 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 45262 event pairs, 1443 based on Foata normal form. 8/7484 useless extension candidates. Maximal degree in co-relation 36680. Up to 6291 conditions per place. [2024-06-28 01:54:12,893 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 146 selfloop transitions, 94 changer transitions 0/247 dead transitions. [2024-06-28 01:54:12,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 247 transitions, 3165 flow [2024-06-28 01:54:12,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:54:12,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:54:12,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 165 transitions. [2024-06-28 01:54:12,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5124223602484472 [2024-06-28 01:54:12,895 INFO L175 Difference]: Start difference. First operand has 130 places, 207 transitions, 2428 flow. Second operand 7 states and 165 transitions. [2024-06-28 01:54:12,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 247 transitions, 3165 flow [2024-06-28 01:54:13,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 247 transitions, 2978 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-06-28 01:54:13,016 INFO L231 Difference]: Finished difference. Result has 133 places, 211 transitions, 2502 flow [2024-06-28 01:54:13,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2244, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2502, PETRI_PLACES=133, PETRI_TRANSITIONS=211} [2024-06-28 01:54:13,017 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 81 predicate places. [2024-06-28 01:54:13,017 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 211 transitions, 2502 flow [2024-06-28 01:54:13,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:13,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:54:13,017 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:54:13,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 01:54:13,017 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:54:13,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:54:13,018 INFO L85 PathProgramCache]: Analyzing trace with hash 876340998, now seen corresponding path program 1 times [2024-06-28 01:54:13,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:54:13,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789457855] [2024-06-28 01:54:13,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:54:13,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:54:13,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:54:13,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:54:13,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:54:13,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789457855] [2024-06-28 01:54:13,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789457855] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:54:13,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:54:13,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:54:13,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039258188] [2024-06-28 01:54:13,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:54:13,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:54:13,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:54:13,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:54:13,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:54:13,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:54:13,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 211 transitions, 2502 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:13,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:54:13,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:54:13,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:54:14,897 INFO L124 PetriNetUnfolderBase]: 4931/7691 cut-off events. [2024-06-28 01:54:14,898 INFO L125 PetriNetUnfolderBase]: For 66432/66447 co-relation queries the response was YES. [2024-06-28 01:54:14,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36935 conditions, 7691 events. 4931/7691 cut-off events. For 66432/66447 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 45197 event pairs, 1491 based on Foata normal form. 12/7484 useless extension candidates. Maximal degree in co-relation 36874. Up to 6798 conditions per place. [2024-06-28 01:54:14,949 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 197 selfloop transitions, 58 changer transitions 0/262 dead transitions. [2024-06-28 01:54:14,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 262 transitions, 3304 flow [2024-06-28 01:54:14,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:54:14,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:54:14,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 180 transitions. [2024-06-28 01:54:14,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4891304347826087 [2024-06-28 01:54:14,951 INFO L175 Difference]: Start difference. First operand has 133 places, 211 transitions, 2502 flow. Second operand 8 states and 180 transitions. [2024-06-28 01:54:14,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 262 transitions, 3304 flow [2024-06-28 01:54:15,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 262 transitions, 3147 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-28 01:54:15,078 INFO L231 Difference]: Finished difference. Result has 137 places, 218 transitions, 2583 flow [2024-06-28 01:54:15,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2353, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2583, PETRI_PLACES=137, PETRI_TRANSITIONS=218} [2024-06-28 01:54:15,078 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 85 predicate places. [2024-06-28 01:54:15,079 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 218 transitions, 2583 flow [2024-06-28 01:54:15,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:15,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:54:15,079 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:54:15,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 01:54:15,079 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:54:15,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:54:15,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1080554358, now seen corresponding path program 1 times [2024-06-28 01:54:15,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:54:15,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616923447] [2024-06-28 01:54:15,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:54:15,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:54:15,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:54:15,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:54:15,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:54:15,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616923447] [2024-06-28 01:54:15,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616923447] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:54:15,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:54:15,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:54:15,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619783465] [2024-06-28 01:54:15,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:54:15,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:54:15,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:54:15,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:54:15,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:54:15,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:54:15,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 218 transitions, 2583 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:15,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:54:15,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:54:15,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:54:17,125 INFO L124 PetriNetUnfolderBase]: 4970/7740 cut-off events. [2024-06-28 01:54:17,125 INFO L125 PetriNetUnfolderBase]: For 74349/74349 co-relation queries the response was YES. [2024-06-28 01:54:17,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37832 conditions, 7740 events. 4970/7740 cut-off events. For 74349/74349 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 45447 event pairs, 1154 based on Foata normal form. 4/7531 useless extension candidates. Maximal degree in co-relation 37770. Up to 6929 conditions per place. [2024-06-28 01:54:17,182 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 221 selfloop transitions, 38 changer transitions 0/266 dead transitions. [2024-06-28 01:54:17,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 266 transitions, 3289 flow [2024-06-28 01:54:17,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:54:17,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:54:17,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 179 transitions. [2024-06-28 01:54:17,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48641304347826086 [2024-06-28 01:54:17,184 INFO L175 Difference]: Start difference. First operand has 137 places, 218 transitions, 2583 flow. Second operand 8 states and 179 transitions. [2024-06-28 01:54:17,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 266 transitions, 3289 flow [2024-06-28 01:54:17,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 266 transitions, 3136 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-28 01:54:17,329 INFO L231 Difference]: Finished difference. Result has 140 places, 225 transitions, 2592 flow [2024-06-28 01:54:17,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2430, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2592, PETRI_PLACES=140, PETRI_TRANSITIONS=225} [2024-06-28 01:54:17,330 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 88 predicate places. [2024-06-28 01:54:17,330 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 225 transitions, 2592 flow [2024-06-28 01:54:17,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:17,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:54:17,330 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:54:17,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 01:54:17,331 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:54:17,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:54:17,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1703248224, now seen corresponding path program 2 times [2024-06-28 01:54:17,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:54:17,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203506666] [2024-06-28 01:54:17,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:54:17,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:54:17,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:54:18,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:54:18,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:54:18,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203506666] [2024-06-28 01:54:18,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203506666] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:54:18,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:54:18,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:54:18,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124643615] [2024-06-28 01:54:18,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:54:18,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:54:18,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:54:18,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:54:18,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:54:18,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:54:18,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 225 transitions, 2592 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:18,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:54:18,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:54:18,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:54:19,618 INFO L124 PetriNetUnfolderBase]: 5004/7829 cut-off events. [2024-06-28 01:54:19,618 INFO L125 PetriNetUnfolderBase]: For 81805/81805 co-relation queries the response was YES. [2024-06-28 01:54:19,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39110 conditions, 7829 events. 5004/7829 cut-off events. For 81805/81805 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 46235 event pairs, 1464 based on Foata normal form. 4/7607 useless extension candidates. Maximal degree in co-relation 39046. Up to 6971 conditions per place. [2024-06-28 01:54:19,685 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 220 selfloop transitions, 46 changer transitions 0/273 dead transitions. [2024-06-28 01:54:19,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 273 transitions, 3363 flow [2024-06-28 01:54:19,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:54:19,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:54:19,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 180 transitions. [2024-06-28 01:54:19,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4891304347826087 [2024-06-28 01:54:19,687 INFO L175 Difference]: Start difference. First operand has 140 places, 225 transitions, 2592 flow. Second operand 8 states and 180 transitions. [2024-06-28 01:54:19,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 273 transitions, 3363 flow [2024-06-28 01:54:19,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 273 transitions, 3259 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-28 01:54:19,860 INFO L231 Difference]: Finished difference. Result has 144 places, 231 transitions, 2710 flow [2024-06-28 01:54:19,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2488, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2710, PETRI_PLACES=144, PETRI_TRANSITIONS=231} [2024-06-28 01:54:19,861 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 92 predicate places. [2024-06-28 01:54:19,861 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 231 transitions, 2710 flow [2024-06-28 01:54:19,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:19,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:54:19,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:54:19,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 01:54:19,862 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:54:19,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:54:19,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1700567189, now seen corresponding path program 1 times [2024-06-28 01:54:19,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:54:19,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985255583] [2024-06-28 01:54:19,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:54:19,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:54:19,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:54:20,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:54:20,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:54:20,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985255583] [2024-06-28 01:54:20,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985255583] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:54:20,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:54:20,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:54:20,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895551202] [2024-06-28 01:54:20,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:54:20,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:54:20,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:54:20,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:54:20,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:54:20,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:54:20,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 231 transitions, 2710 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:20,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:54:20,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:54:20,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:54:21,829 INFO L124 PetriNetUnfolderBase]: 4996/7825 cut-off events. [2024-06-28 01:54:21,829 INFO L125 PetriNetUnfolderBase]: For 89123/89138 co-relation queries the response was YES. [2024-06-28 01:54:21,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39852 conditions, 7825 events. 4996/7825 cut-off events. For 89123/89138 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 46334 event pairs, 1463 based on Foata normal form. 12/7605 useless extension candidates. Maximal degree in co-relation 39786. Up to 6942 conditions per place. [2024-06-28 01:54:21,891 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 212 selfloop transitions, 49 changer transitions 0/268 dead transitions. [2024-06-28 01:54:21,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 268 transitions, 3404 flow [2024-06-28 01:54:21,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:54:21,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:54:21,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 158 transitions. [2024-06-28 01:54:21,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4906832298136646 [2024-06-28 01:54:21,892 INFO L175 Difference]: Start difference. First operand has 144 places, 231 transitions, 2710 flow. Second operand 7 states and 158 transitions. [2024-06-28 01:54:21,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 268 transitions, 3404 flow [2024-06-28 01:54:22,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 268 transitions, 3269 flow, removed 32 selfloop flow, removed 5 redundant places. [2024-06-28 01:54:22,108 INFO L231 Difference]: Finished difference. Result has 146 places, 234 transitions, 2742 flow [2024-06-28 01:54:22,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2581, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2742, PETRI_PLACES=146, PETRI_TRANSITIONS=234} [2024-06-28 01:54:22,109 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 94 predicate places. [2024-06-28 01:54:22,109 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 234 transitions, 2742 flow [2024-06-28 01:54:22,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:22,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:54:22,109 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:54:22,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 01:54:22,109 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:54:22,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:54:22,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1199625978, now seen corresponding path program 3 times [2024-06-28 01:54:22,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:54:22,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029019343] [2024-06-28 01:54:22,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:54:22,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:54:22,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:54:22,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:54:22,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:54:22,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029019343] [2024-06-28 01:54:22,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029019343] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:54:22,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:54:22,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:54:22,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114684483] [2024-06-28 01:54:22,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:54:22,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:54:22,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:54:22,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:54:22,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:54:23,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:54:23,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 234 transitions, 2742 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:23,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:54:23,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:54:23,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:54:24,172 INFO L124 PetriNetUnfolderBase]: 5030/7867 cut-off events. [2024-06-28 01:54:24,172 INFO L125 PetriNetUnfolderBase]: For 93712/93712 co-relation queries the response was YES. [2024-06-28 01:54:24,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40280 conditions, 7867 events. 5030/7867 cut-off events. For 93712/93712 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 46497 event pairs, 1448 based on Foata normal form. 4/7645 useless extension candidates. Maximal degree in co-relation 40213. Up to 6950 conditions per place. [2024-06-28 01:54:24,234 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 216 selfloop transitions, 56 changer transitions 0/279 dead transitions. [2024-06-28 01:54:24,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 279 transitions, 3490 flow [2024-06-28 01:54:24,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:54:24,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:54:24,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 180 transitions. [2024-06-28 01:54:24,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4891304347826087 [2024-06-28 01:54:24,236 INFO L175 Difference]: Start difference. First operand has 146 places, 234 transitions, 2742 flow. Second operand 8 states and 180 transitions. [2024-06-28 01:54:24,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 279 transitions, 3490 flow [2024-06-28 01:54:24,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 279 transitions, 3383 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-28 01:54:24,411 INFO L231 Difference]: Finished difference. Result has 149 places, 237 transitions, 2809 flow [2024-06-28 01:54:24,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2635, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2809, PETRI_PLACES=149, PETRI_TRANSITIONS=237} [2024-06-28 01:54:24,412 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 97 predicate places. [2024-06-28 01:54:24,412 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 237 transitions, 2809 flow [2024-06-28 01:54:24,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:24,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:54:24,412 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:54:24,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 01:54:24,412 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:54:24,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:54:24,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1876702461, now seen corresponding path program 1 times [2024-06-28 01:54:24,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:54:24,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907495153] [2024-06-28 01:54:24,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:54:24,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:54:24,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:54:24,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:54:24,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:54:24,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907495153] [2024-06-28 01:54:24,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907495153] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:54:24,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:54:24,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:54:24,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088211595] [2024-06-28 01:54:24,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:54:24,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:54:24,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:54:24,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:54:24,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:54:24,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:54:24,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 237 transitions, 2809 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:24,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:54:24,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:54:24,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:54:26,007 INFO L124 PetriNetUnfolderBase]: 5050/7889 cut-off events. [2024-06-28 01:54:26,007 INFO L125 PetriNetUnfolderBase]: For 96759/96759 co-relation queries the response was YES. [2024-06-28 01:54:26,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41108 conditions, 7889 events. 5050/7889 cut-off events. For 96759/96759 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 46530 event pairs, 1464 based on Foata normal form. 1/7666 useless extension candidates. Maximal degree in co-relation 41040. Up to 7124 conditions per place. [2024-06-28 01:54:26,070 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 238 selfloop transitions, 32 changer transitions 0/277 dead transitions. [2024-06-28 01:54:26,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 277 transitions, 3629 flow [2024-06-28 01:54:26,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:54:26,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:54:26,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 135 transitions. [2024-06-28 01:54:26,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4891304347826087 [2024-06-28 01:54:26,071 INFO L175 Difference]: Start difference. First operand has 149 places, 237 transitions, 2809 flow. Second operand 6 states and 135 transitions. [2024-06-28 01:54:26,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 277 transitions, 3629 flow [2024-06-28 01:54:26,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 277 transitions, 3479 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-28 01:54:26,253 INFO L231 Difference]: Finished difference. Result has 150 places, 248 transitions, 2854 flow [2024-06-28 01:54:26,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2659, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2854, PETRI_PLACES=150, PETRI_TRANSITIONS=248} [2024-06-28 01:54:26,253 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 98 predicate places. [2024-06-28 01:54:26,254 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 248 transitions, 2854 flow [2024-06-28 01:54:26,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:26,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:54:26,254 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:54:26,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 01:54:26,254 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:54:26,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:54:26,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1397095505, now seen corresponding path program 1 times [2024-06-28 01:54:26,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:54:26,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810687416] [2024-06-28 01:54:26,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:54:26,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:54:26,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:54:27,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:54:27,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:54:27,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810687416] [2024-06-28 01:54:27,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810687416] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:54:27,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:54:27,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:54:27,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003303585] [2024-06-28 01:54:27,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:54:27,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:54:27,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:54:27,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:54:27,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:54:27,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:54:27,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 248 transitions, 2854 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:27,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:54:27,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:54:27,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:54:28,154 INFO L124 PetriNetUnfolderBase]: 5105/7994 cut-off events. [2024-06-28 01:54:28,154 INFO L125 PetriNetUnfolderBase]: For 107700/107700 co-relation queries the response was YES. [2024-06-28 01:54:28,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42515 conditions, 7994 events. 5105/7994 cut-off events. For 107700/107700 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 47432 event pairs, 1827 based on Foata normal form. 4/7775 useless extension candidates. Maximal degree in co-relation 42445. Up to 6891 conditions per place. [2024-06-28 01:54:28,226 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 234 selfloop transitions, 62 changer transitions 0/303 dead transitions. [2024-06-28 01:54:28,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 303 transitions, 3889 flow [2024-06-28 01:54:28,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:54:28,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:54:28,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 194 transitions. [2024-06-28 01:54:28,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46859903381642515 [2024-06-28 01:54:28,227 INFO L175 Difference]: Start difference. First operand has 150 places, 248 transitions, 2854 flow. Second operand 9 states and 194 transitions. [2024-06-28 01:54:28,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 303 transitions, 3889 flow [2024-06-28 01:54:28,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 303 transitions, 3859 flow, removed 14 selfloop flow, removed 1 redundant places. [2024-06-28 01:54:28,433 INFO L231 Difference]: Finished difference. Result has 158 places, 254 transitions, 3082 flow [2024-06-28 01:54:28,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2824, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3082, PETRI_PLACES=158, PETRI_TRANSITIONS=254} [2024-06-28 01:54:28,434 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 106 predicate places. [2024-06-28 01:54:28,434 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 254 transitions, 3082 flow [2024-06-28 01:54:28,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:28,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:54:28,435 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:54:28,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 01:54:28,435 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:54:28,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:54:28,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1396769075, now seen corresponding path program 2 times [2024-06-28 01:54:28,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:54:28,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467489807] [2024-06-28 01:54:28,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:54:28,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:54:28,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:54:29,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:54:29,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:54:29,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467489807] [2024-06-28 01:54:29,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467489807] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:54:29,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:54:29,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:54:29,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465825823] [2024-06-28 01:54:29,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:54:29,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:54:29,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:54:29,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:54:29,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:54:29,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:54:29,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 254 transitions, 3082 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:29,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:54:29,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:54:29,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:54:30,444 INFO L124 PetriNetUnfolderBase]: 5097/8000 cut-off events. [2024-06-28 01:54:30,445 INFO L125 PetriNetUnfolderBase]: For 116890/116890 co-relation queries the response was YES. [2024-06-28 01:54:30,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43515 conditions, 8000 events. 5097/8000 cut-off events. For 116890/116890 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 47633 event pairs, 1921 based on Foata normal form. 4/7775 useless extension candidates. Maximal degree in co-relation 43442. Up to 7003 conditions per place. [2024-06-28 01:54:30,519 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 238 selfloop transitions, 63 changer transitions 0/308 dead transitions. [2024-06-28 01:54:30,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 308 transitions, 3947 flow [2024-06-28 01:54:30,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:54:30,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:54:30,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 214 transitions. [2024-06-28 01:54:30,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4652173913043478 [2024-06-28 01:54:30,520 INFO L175 Difference]: Start difference. First operand has 158 places, 254 transitions, 3082 flow. Second operand 10 states and 214 transitions. [2024-06-28 01:54:30,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 308 transitions, 3947 flow [2024-06-28 01:54:30,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 308 transitions, 3783 flow, removed 51 selfloop flow, removed 5 redundant places. [2024-06-28 01:54:30,784 INFO L231 Difference]: Finished difference. Result has 163 places, 254 transitions, 3053 flow [2024-06-28 01:54:30,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2918, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3053, PETRI_PLACES=163, PETRI_TRANSITIONS=254} [2024-06-28 01:54:30,785 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 111 predicate places. [2024-06-28 01:54:30,785 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 254 transitions, 3053 flow [2024-06-28 01:54:30,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:30,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:54:30,785 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:54:30,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 01:54:30,785 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:54:30,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:54:30,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1387564586, now seen corresponding path program 1 times [2024-06-28 01:54:30,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:54:30,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032581727] [2024-06-28 01:54:30,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:54:30,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:54:30,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:54:31,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:54:31,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:54:31,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032581727] [2024-06-28 01:54:31,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032581727] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:54:31,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:54:31,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:54:31,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487618606] [2024-06-28 01:54:31,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:54:31,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:54:31,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:54:31,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:54:31,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:54:31,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:54:31,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 254 transitions, 3053 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:31,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:54:31,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:54:31,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:54:32,687 INFO L124 PetriNetUnfolderBase]: 5111/7997 cut-off events. [2024-06-28 01:54:32,687 INFO L125 PetriNetUnfolderBase]: For 116120/116129 co-relation queries the response was YES. [2024-06-28 01:54:32,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43405 conditions, 7997 events. 5111/7997 cut-off events. For 116120/116129 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 47394 event pairs, 1360 based on Foata normal form. 10/7772 useless extension candidates. Maximal degree in co-relation 43330. Up to 6742 conditions per place. [2024-06-28 01:54:32,760 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 205 selfloop transitions, 92 changer transitions 0/304 dead transitions. [2024-06-28 01:54:32,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 304 transitions, 3925 flow [2024-06-28 01:54:32,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:54:32,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:54:32,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 184 transitions. [2024-06-28 01:54:32,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:54:32,764 INFO L175 Difference]: Start difference. First operand has 163 places, 254 transitions, 3053 flow. Second operand 8 states and 184 transitions. [2024-06-28 01:54:32,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 304 transitions, 3925 flow [2024-06-28 01:54:33,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 304 transitions, 3754 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-28 01:54:33,008 INFO L231 Difference]: Finished difference. Result has 163 places, 263 transitions, 3212 flow [2024-06-28 01:54:33,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2906, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3212, PETRI_PLACES=163, PETRI_TRANSITIONS=263} [2024-06-28 01:54:33,013 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 111 predicate places. [2024-06-28 01:54:33,013 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 263 transitions, 3212 flow [2024-06-28 01:54:33,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:33,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:54:33,013 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:54:33,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 01:54:33,014 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:54:33,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:54:33,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1130856314, now seen corresponding path program 4 times [2024-06-28 01:54:33,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:54:33,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914189461] [2024-06-28 01:54:33,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:54:33,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:54:33,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:54:33,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:54:33,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:54:33,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914189461] [2024-06-28 01:54:33,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914189461] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:54:33,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:54:33,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:54:33,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168067838] [2024-06-28 01:54:33,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:54:33,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:54:33,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:54:33,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:54:33,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:54:33,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:54:33,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 263 transitions, 3212 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:33,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:54:33,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:54:33,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:54:35,100 INFO L124 PetriNetUnfolderBase]: 5296/8210 cut-off events. [2024-06-28 01:54:35,101 INFO L125 PetriNetUnfolderBase]: For 133308/133317 co-relation queries the response was YES. [2024-06-28 01:54:35,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45235 conditions, 8210 events. 5296/8210 cut-off events. For 133308/133317 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 48260 event pairs, 1381 based on Foata normal form. 34/8031 useless extension candidates. Maximal degree in co-relation 45159. Up to 6565 conditions per place. [2024-06-28 01:54:35,172 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 193 selfloop transitions, 113 changer transitions 0/313 dead transitions. [2024-06-28 01:54:35,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 313 transitions, 4078 flow [2024-06-28 01:54:35,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:54:35,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:54:35,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-06-28 01:54:35,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5217391304347826 [2024-06-28 01:54:35,173 INFO L175 Difference]: Start difference. First operand has 163 places, 263 transitions, 3212 flow. Second operand 8 states and 192 transitions. [2024-06-28 01:54:35,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 313 transitions, 4078 flow [2024-06-28 01:54:35,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 313 transitions, 4038 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-06-28 01:54:35,428 INFO L231 Difference]: Finished difference. Result has 169 places, 267 transitions, 3481 flow [2024-06-28 01:54:35,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3172, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3481, PETRI_PLACES=169, PETRI_TRANSITIONS=267} [2024-06-28 01:54:35,429 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 117 predicate places. [2024-06-28 01:54:35,429 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 267 transitions, 3481 flow [2024-06-28 01:54:35,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:35,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:54:35,429 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:54:35,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 01:54:35,429 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:54:35,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:54:35,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1086896545, now seen corresponding path program 2 times [2024-06-28 01:54:35,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:54:35,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367057628] [2024-06-28 01:54:35,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:54:35,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:54:35,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:54:35,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:54:35,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:54:35,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367057628] [2024-06-28 01:54:35,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367057628] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:54:35,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:54:35,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:54:35,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804416608] [2024-06-28 01:54:35,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:54:35,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:54:35,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:54:35,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:54:35,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:54:35,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:54:35,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 267 transitions, 3481 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:35,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:54:35,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:54:35,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:54:37,090 INFO L124 PetriNetUnfolderBase]: 5333/8315 cut-off events. [2024-06-28 01:54:37,090 INFO L125 PetriNetUnfolderBase]: For 138220/138220 co-relation queries the response was YES. [2024-06-28 01:54:37,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47503 conditions, 8315 events. 5333/8315 cut-off events. For 138220/138220 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 49353 event pairs, 1525 based on Foata normal form. 3/8091 useless extension candidates. Maximal degree in co-relation 47425. Up to 7500 conditions per place. [2024-06-28 01:54:37,172 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 251 selfloop transitions, 36 changer transitions 0/294 dead transitions. [2024-06-28 01:54:37,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 294 transitions, 4219 flow [2024-06-28 01:54:37,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:54:37,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:54:37,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2024-06-28 01:54:37,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5173913043478261 [2024-06-28 01:54:37,174 INFO L175 Difference]: Start difference. First operand has 169 places, 267 transitions, 3481 flow. Second operand 5 states and 119 transitions. [2024-06-28 01:54:37,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 294 transitions, 4219 flow [2024-06-28 01:54:37,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 294 transitions, 3950 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-28 01:54:37,518 INFO L231 Difference]: Finished difference. Result has 168 places, 270 transitions, 3358 flow [2024-06-28 01:54:37,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3212, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3358, PETRI_PLACES=168, PETRI_TRANSITIONS=270} [2024-06-28 01:54:37,519 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 116 predicate places. [2024-06-28 01:54:37,519 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 270 transitions, 3358 flow [2024-06-28 01:54:37,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:37,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:54:37,519 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:54:37,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 01:54:37,519 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:54:37,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:54:37,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1176069573, now seen corresponding path program 1 times [2024-06-28 01:54:37,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:54:37,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901657922] [2024-06-28 01:54:37,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:54:37,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:54:37,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:54:38,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:54:38,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:54:38,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901657922] [2024-06-28 01:54:38,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901657922] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:54:38,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:54:38,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:54:38,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874996261] [2024-06-28 01:54:38,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:54:38,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:54:38,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:54:38,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:54:38,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:54:38,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:54:38,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 270 transitions, 3358 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:38,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:54:38,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:54:38,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:54:39,639 INFO L124 PetriNetUnfolderBase]: 5367/8225 cut-off events. [2024-06-28 01:54:39,639 INFO L125 PetriNetUnfolderBase]: For 140748/140763 co-relation queries the response was YES. [2024-06-28 01:54:39,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47396 conditions, 8225 events. 5367/8225 cut-off events. For 140748/140763 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 47974 event pairs, 1139 based on Foata normal form. 14/8055 useless extension candidates. Maximal degree in co-relation 47317. Up to 7473 conditions per place. [2024-06-28 01:54:39,698 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 268 selfloop transitions, 39 changer transitions 0/314 dead transitions. [2024-06-28 01:54:39,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 314 transitions, 4168 flow [2024-06-28 01:54:39,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:54:39,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:54:39,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 177 transitions. [2024-06-28 01:54:39,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48097826086956524 [2024-06-28 01:54:39,700 INFO L175 Difference]: Start difference. First operand has 168 places, 270 transitions, 3358 flow. Second operand 8 states and 177 transitions. [2024-06-28 01:54:39,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 314 transitions, 4168 flow [2024-06-28 01:54:39,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 314 transitions, 4104 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-28 01:54:39,943 INFO L231 Difference]: Finished difference. Result has 173 places, 273 transitions, 3442 flow [2024-06-28 01:54:39,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3294, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3442, PETRI_PLACES=173, PETRI_TRANSITIONS=273} [2024-06-28 01:54:39,943 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 121 predicate places. [2024-06-28 01:54:39,943 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 273 transitions, 3442 flow [2024-06-28 01:54:39,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:39,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:54:39,944 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:54:39,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 01:54:39,944 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:54:39,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:54:39,945 INFO L85 PathProgramCache]: Analyzing trace with hash 291987257, now seen corresponding path program 2 times [2024-06-28 01:54:39,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:54:39,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054920736] [2024-06-28 01:54:39,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:54:39,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:54:39,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:54:40,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:54:40,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:54:40,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054920736] [2024-06-28 01:54:40,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054920736] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:54:40,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:54:40,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:54:40,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165759913] [2024-06-28 01:54:40,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:54:40,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:54:40,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:54:40,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:54:40,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:54:40,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:54:40,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 273 transitions, 3442 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:40,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:54:40,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:54:40,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:54:42,175 INFO L124 PetriNetUnfolderBase]: 5443/8334 cut-off events. [2024-06-28 01:54:42,175 INFO L125 PetriNetUnfolderBase]: For 153510/153525 co-relation queries the response was YES. [2024-06-28 01:54:42,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49037 conditions, 8334 events. 5443/8334 cut-off events. For 153510/153525 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 48656 event pairs, 1435 based on Foata normal form. 14/8165 useless extension candidates. Maximal degree in co-relation 48957. Up to 7477 conditions per place. [2024-06-28 01:54:42,245 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 261 selfloop transitions, 55 changer transitions 0/323 dead transitions. [2024-06-28 01:54:42,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 323 transitions, 4464 flow [2024-06-28 01:54:42,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:54:42,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:54:42,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 182 transitions. [2024-06-28 01:54:42,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4945652173913043 [2024-06-28 01:54:42,260 INFO L175 Difference]: Start difference. First operand has 173 places, 273 transitions, 3442 flow. Second operand 8 states and 182 transitions. [2024-06-28 01:54:42,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 323 transitions, 4464 flow [2024-06-28 01:54:42,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 323 transitions, 4340 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-28 01:54:42,524 INFO L231 Difference]: Finished difference. Result has 175 places, 279 transitions, 3566 flow [2024-06-28 01:54:42,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3318, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3566, PETRI_PLACES=175, PETRI_TRANSITIONS=279} [2024-06-28 01:54:42,525 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 123 predicate places. [2024-06-28 01:54:42,525 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 279 transitions, 3566 flow [2024-06-28 01:54:42,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:42,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:54:42,525 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:54:42,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 01:54:42,526 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:54:42,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:54:42,526 INFO L85 PathProgramCache]: Analyzing trace with hash 208875017, now seen corresponding path program 3 times [2024-06-28 01:54:42,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:54:42,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509568452] [2024-06-28 01:54:42,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:54:42,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:54:42,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:54:43,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:54:43,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:54:43,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509568452] [2024-06-28 01:54:43,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509568452] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:54:43,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:54:43,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:54:43,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965737604] [2024-06-28 01:54:43,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:54:43,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:54:43,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:54:43,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:54:43,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:54:43,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:54:43,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 279 transitions, 3566 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:43,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:54:43,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:54:43,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:54:44,832 INFO L124 PetriNetUnfolderBase]: 5435/8313 cut-off events. [2024-06-28 01:54:44,833 INFO L125 PetriNetUnfolderBase]: For 162544/162559 co-relation queries the response was YES. [2024-06-28 01:54:44,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49619 conditions, 8313 events. 5435/8313 cut-off events. For 162544/162559 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 48391 event pairs, 1434 based on Foata normal form. 14/8147 useless extension candidates. Maximal degree in co-relation 49538. Up to 7548 conditions per place. [2024-06-28 01:54:44,906 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 262 selfloop transitions, 52 changer transitions 0/321 dead transitions. [2024-06-28 01:54:44,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 321 transitions, 4350 flow [2024-06-28 01:54:44,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:54:44,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:54:44,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 179 transitions. [2024-06-28 01:54:44,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48641304347826086 [2024-06-28 01:54:44,908 INFO L175 Difference]: Start difference. First operand has 175 places, 279 transitions, 3566 flow. Second operand 8 states and 179 transitions. [2024-06-28 01:54:44,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 321 transitions, 4350 flow [2024-06-28 01:54:45,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 321 transitions, 4188 flow, removed 54 selfloop flow, removed 4 redundant places. [2024-06-28 01:54:45,250 INFO L231 Difference]: Finished difference. Result has 179 places, 279 transitions, 3517 flow [2024-06-28 01:54:45,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3404, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3517, PETRI_PLACES=179, PETRI_TRANSITIONS=279} [2024-06-28 01:54:45,250 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 127 predicate places. [2024-06-28 01:54:45,250 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 279 transitions, 3517 flow [2024-06-28 01:54:45,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:45,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:54:45,251 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:54:45,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 01:54:45,251 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:54:45,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:54:45,251 INFO L85 PathProgramCache]: Analyzing trace with hash 296640481, now seen corresponding path program 1 times [2024-06-28 01:54:45,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:54:45,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386361243] [2024-06-28 01:54:45,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:54:45,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:54:45,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:54:46,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:54:46,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:54:46,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386361243] [2024-06-28 01:54:46,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386361243] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:54:46,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:54:46,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:54:46,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298115920] [2024-06-28 01:54:46,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:54:46,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:54:46,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:54:46,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:54:46,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:54:46,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:54:46,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 279 transitions, 3517 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:46,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:54:46,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:54:46,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:54:47,554 INFO L124 PetriNetUnfolderBase]: 5665/8693 cut-off events. [2024-06-28 01:54:47,554 INFO L125 PetriNetUnfolderBase]: For 179470/179494 co-relation queries the response was YES. [2024-06-28 01:54:47,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51780 conditions, 8693 events. 5665/8693 cut-off events. For 179470/179494 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 51142 event pairs, 1455 based on Foata normal form. 36/8536 useless extension candidates. Maximal degree in co-relation 51697. Up to 7698 conditions per place. [2024-06-28 01:54:47,634 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 288 selfloop transitions, 48 changer transitions 0/343 dead transitions. [2024-06-28 01:54:47,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 343 transitions, 4538 flow [2024-06-28 01:54:47,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:54:47,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:54:47,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 206 transitions. [2024-06-28 01:54:47,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4975845410628019 [2024-06-28 01:54:47,636 INFO L175 Difference]: Start difference. First operand has 179 places, 279 transitions, 3517 flow. Second operand 9 states and 206 transitions. [2024-06-28 01:54:47,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 343 transitions, 4538 flow [2024-06-28 01:54:48,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 343 transitions, 4414 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-28 01:54:48,042 INFO L231 Difference]: Finished difference. Result has 182 places, 288 transitions, 3655 flow [2024-06-28 01:54:48,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3403, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3655, PETRI_PLACES=182, PETRI_TRANSITIONS=288} [2024-06-28 01:54:48,043 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 130 predicate places. [2024-06-28 01:54:48,043 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 288 transitions, 3655 flow [2024-06-28 01:54:48,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:48,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:54:48,043 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:54:48,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 01:54:48,043 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:54:48,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:54:48,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1459618801, now seen corresponding path program 2 times [2024-06-28 01:54:48,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:54:48,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136900716] [2024-06-28 01:54:48,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:54:48,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:54:48,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:54:48,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:54:48,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:54:48,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136900716] [2024-06-28 01:54:48,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136900716] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:54:48,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:54:48,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:54:48,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715679038] [2024-06-28 01:54:48,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:54:48,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:54:48,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:54:48,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:54:48,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:54:48,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:54:48,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 288 transitions, 3655 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:48,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:54:48,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:54:48,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:54:50,293 INFO L124 PetriNetUnfolderBase]: 6022/9355 cut-off events. [2024-06-28 01:54:50,293 INFO L125 PetriNetUnfolderBase]: For 213556/213565 co-relation queries the response was YES. [2024-06-28 01:54:50,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57048 conditions, 9355 events. 6022/9355 cut-off events. For 213556/213565 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 56324 event pairs, 1160 based on Foata normal form. 22/9144 useless extension candidates. Maximal degree in co-relation 56963. Up to 7046 conditions per place. [2024-06-28 01:54:50,366 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 213 selfloop transitions, 129 changer transitions 0/349 dead transitions. [2024-06-28 01:54:50,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 349 transitions, 4856 flow [2024-06-28 01:54:50,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:54:50,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:54:50,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-06-28 01:54:50,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5271739130434783 [2024-06-28 01:54:50,368 INFO L175 Difference]: Start difference. First operand has 182 places, 288 transitions, 3655 flow. Second operand 8 states and 194 transitions. [2024-06-28 01:54:50,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 349 transitions, 4856 flow [2024-06-28 01:54:50,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 349 transitions, 4731 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-28 01:54:50,775 INFO L231 Difference]: Finished difference. Result has 185 places, 297 transitions, 4014 flow [2024-06-28 01:54:50,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3530, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4014, PETRI_PLACES=185, PETRI_TRANSITIONS=297} [2024-06-28 01:54:50,775 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 133 predicate places. [2024-06-28 01:54:50,776 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 297 transitions, 4014 flow [2024-06-28 01:54:50,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:50,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:54:50,776 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:54:50,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 01:54:50,776 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:54:50,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:54:50,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1459627171, now seen corresponding path program 3 times [2024-06-28 01:54:50,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:54:50,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847821402] [2024-06-28 01:54:50,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:54:50,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:54:50,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:54:51,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:54:51,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:54:51,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847821402] [2024-06-28 01:54:51,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847821402] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:54:51,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:54:51,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:54:51,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588718734] [2024-06-28 01:54:51,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:54:51,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:54:51,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:54:51,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:54:51,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:54:51,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:54:51,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 297 transitions, 4014 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:51,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:54:51,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:54:51,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:54:52,897 INFO L124 PetriNetUnfolderBase]: 6210/9645 cut-off events. [2024-06-28 01:54:52,897 INFO L125 PetriNetUnfolderBase]: For 240816/240825 co-relation queries the response was YES. [2024-06-28 01:54:52,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60601 conditions, 9645 events. 6210/9645 cut-off events. For 240816/240825 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 58531 event pairs, 1414 based on Foata normal form. 30/9440 useless extension candidates. Maximal degree in co-relation 60514. Up to 7942 conditions per place. [2024-06-28 01:54:52,992 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 218 selfloop transitions, 121 changer transitions 0/346 dead transitions. [2024-06-28 01:54:52,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 346 transitions, 4960 flow [2024-06-28 01:54:52,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:54:52,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:54:52,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-06-28 01:54:52,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5163043478260869 [2024-06-28 01:54:52,994 INFO L175 Difference]: Start difference. First operand has 185 places, 297 transitions, 4014 flow. Second operand 8 states and 190 transitions. [2024-06-28 01:54:52,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 346 transitions, 4960 flow [2024-06-28 01:54:53,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 346 transitions, 4760 flow, removed 31 selfloop flow, removed 4 redundant places. [2024-06-28 01:54:53,731 INFO L231 Difference]: Finished difference. Result has 189 places, 300 transitions, 4150 flow [2024-06-28 01:54:53,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3816, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4150, PETRI_PLACES=189, PETRI_TRANSITIONS=300} [2024-06-28 01:54:53,731 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 137 predicate places. [2024-06-28 01:54:53,732 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 300 transitions, 4150 flow [2024-06-28 01:54:53,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:53,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:54:53,732 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:54:53,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 01:54:53,732 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:54:53,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:54:53,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1459857811, now seen corresponding path program 4 times [2024-06-28 01:54:53,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:54:53,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533713457] [2024-06-28 01:54:53,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:54:53,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:54:53,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:54:54,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:54:54,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:54:54,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533713457] [2024-06-28 01:54:54,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533713457] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:54:54,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:54:54,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:54:54,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154283769] [2024-06-28 01:54:54,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:54:54,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:54:54,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:54:54,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:54:54,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:54:54,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:54:54,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 300 transitions, 4150 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:54,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:54:54,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:54:54,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:54:56,405 INFO L124 PetriNetUnfolderBase]: 6406/9931 cut-off events. [2024-06-28 01:54:56,405 INFO L125 PetriNetUnfolderBase]: For 250436/250445 co-relation queries the response was YES. [2024-06-28 01:54:56,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63380 conditions, 9931 events. 6406/9931 cut-off events. For 250436/250445 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 60546 event pairs, 1441 based on Foata normal form. 26/9724 useless extension candidates. Maximal degree in co-relation 63291. Up to 8470 conditions per place. [2024-06-28 01:54:56,504 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 256 selfloop transitions, 99 changer transitions 0/362 dead transitions. [2024-06-28 01:54:56,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 362 transitions, 5294 flow [2024-06-28 01:54:56,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:54:56,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:54:56,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 209 transitions. [2024-06-28 01:54:56,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5048309178743962 [2024-06-28 01:54:56,510 INFO L175 Difference]: Start difference. First operand has 189 places, 300 transitions, 4150 flow. Second operand 9 states and 209 transitions. [2024-06-28 01:54:56,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 362 transitions, 5294 flow [2024-06-28 01:54:57,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 362 transitions, 4956 flow, removed 46 selfloop flow, removed 6 redundant places. [2024-06-28 01:54:57,074 INFO L231 Difference]: Finished difference. Result has 193 places, 308 transitions, 4253 flow [2024-06-28 01:54:57,074 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3864, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4253, PETRI_PLACES=193, PETRI_TRANSITIONS=308} [2024-06-28 01:54:57,075 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 141 predicate places. [2024-06-28 01:54:57,075 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 308 transitions, 4253 flow [2024-06-28 01:54:57,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:57,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:54:57,075 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:54:57,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 01:54:57,075 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:54:57,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:54:57,076 INFO L85 PathProgramCache]: Analyzing trace with hash -396774839, now seen corresponding path program 4 times [2024-06-28 01:54:57,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:54:57,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730797535] [2024-06-28 01:54:57,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:54:57,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:54:57,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:54:58,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:54:58,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:54:58,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730797535] [2024-06-28 01:54:58,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730797535] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:54:58,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:54:58,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:54:58,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068673937] [2024-06-28 01:54:58,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:54:58,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:54:58,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:54:58,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:54:58,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:54:58,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:54:58,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 308 transitions, 4253 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:58,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:54:58,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:54:58,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:54:59,945 INFO L124 PetriNetUnfolderBase]: 6398/9925 cut-off events. [2024-06-28 01:54:59,945 INFO L125 PetriNetUnfolderBase]: For 241653/241662 co-relation queries the response was YES. [2024-06-28 01:54:59,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62716 conditions, 9925 events. 6398/9925 cut-off events. For 241653/241662 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 60518 event pairs, 1433 based on Foata normal form. 10/9700 useless extension candidates. Maximal degree in co-relation 62625. Up to 8694 conditions per place. [2024-06-28 01:55:00,047 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 260 selfloop transitions, 86 changer transitions 0/353 dead transitions. [2024-06-28 01:55:00,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 353 transitions, 5197 flow [2024-06-28 01:55:00,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:55:00,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:55:00,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 182 transitions. [2024-06-28 01:55:00,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4945652173913043 [2024-06-28 01:55:00,049 INFO L175 Difference]: Start difference. First operand has 193 places, 308 transitions, 4253 flow. Second operand 8 states and 182 transitions. [2024-06-28 01:55:00,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 353 transitions, 5197 flow [2024-06-28 01:55:00,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 353 transitions, 4908 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-06-28 01:55:00,760 INFO L231 Difference]: Finished difference. Result has 195 places, 311 transitions, 4236 flow [2024-06-28 01:55:00,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3964, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4236, PETRI_PLACES=195, PETRI_TRANSITIONS=311} [2024-06-28 01:55:00,761 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 143 predicate places. [2024-06-28 01:55:00,761 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 311 transitions, 4236 flow [2024-06-28 01:55:00,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:00,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:55:00,761 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:55:00,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 01:55:00,761 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:55:00,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:55:00,762 INFO L85 PathProgramCache]: Analyzing trace with hash -396594915, now seen corresponding path program 5 times [2024-06-28 01:55:00,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:55:00,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993435199] [2024-06-28 01:55:00,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:55:00,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:55:00,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:55:01,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:55:01,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:55:01,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993435199] [2024-06-28 01:55:01,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993435199] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:55:01,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:55:01,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:55:01,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407991948] [2024-06-28 01:55:01,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:55:01,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:55:01,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:55:01,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:55:01,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:55:01,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:55:01,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 311 transitions, 4236 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:01,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:55:01,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:55:01,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:55:03,412 INFO L124 PetriNetUnfolderBase]: 6539/10137 cut-off events. [2024-06-28 01:55:03,413 INFO L125 PetriNetUnfolderBase]: For 259615/259624 co-relation queries the response was YES. [2024-06-28 01:55:03,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64080 conditions, 10137 events. 6539/10137 cut-off events. For 259615/259624 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 62093 event pairs, 1466 based on Foata normal form. 26/9928 useless extension candidates. Maximal degree in co-relation 63988. Up to 8670 conditions per place. [2024-06-28 01:55:03,512 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 272 selfloop transitions, 92 changer transitions 0/371 dead transitions. [2024-06-28 01:55:03,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 371 transitions, 5332 flow [2024-06-28 01:55:03,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:55:03,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:55:03,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 208 transitions. [2024-06-28 01:55:03,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5024154589371981 [2024-06-28 01:55:03,514 INFO L175 Difference]: Start difference. First operand has 195 places, 311 transitions, 4236 flow. Second operand 9 states and 208 transitions. [2024-06-28 01:55:03,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 371 transitions, 5332 flow [2024-06-28 01:55:04,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 371 transitions, 5051 flow, removed 39 selfloop flow, removed 6 redundant places. [2024-06-28 01:55:04,143 INFO L231 Difference]: Finished difference. Result has 199 places, 317 transitions, 4312 flow [2024-06-28 01:55:04,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3959, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4312, PETRI_PLACES=199, PETRI_TRANSITIONS=317} [2024-06-28 01:55:04,144 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 147 predicate places. [2024-06-28 01:55:04,144 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 317 transitions, 4312 flow [2024-06-28 01:55:04,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:04,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:55:04,145 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:55:04,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 01:55:04,145 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:55:04,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:55:04,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1466298495, now seen corresponding path program 5 times [2024-06-28 01:55:04,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:55:04,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060252455] [2024-06-28 01:55:04,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:55:04,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:55:04,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:55:04,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:55:04,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:55:04,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060252455] [2024-06-28 01:55:04,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060252455] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:55:04,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:55:04,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:55:04,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120994689] [2024-06-28 01:55:04,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:55:04,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:55:04,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:55:04,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:55:04,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:55:05,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:55:05,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 317 transitions, 4312 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:05,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:55:05,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:55:05,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:55:06,603 INFO L124 PetriNetUnfolderBase]: 6536/10042 cut-off events. [2024-06-28 01:55:06,604 INFO L125 PetriNetUnfolderBase]: For 256521/256530 co-relation queries the response was YES. [2024-06-28 01:55:06,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64050 conditions, 10042 events. 6536/10042 cut-off events. For 256521/256530 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 60939 event pairs, 1454 based on Foata normal form. 10/9847 useless extension candidates. Maximal degree in co-relation 63956. Up to 8027 conditions per place. [2024-06-28 01:55:06,699 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 220 selfloop transitions, 139 changer transitions 0/366 dead transitions. [2024-06-28 01:55:06,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 366 transitions, 5298 flow [2024-06-28 01:55:06,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:55:06,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:55:06,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 188 transitions. [2024-06-28 01:55:06,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5108695652173914 [2024-06-28 01:55:06,701 INFO L175 Difference]: Start difference. First operand has 199 places, 317 transitions, 4312 flow. Second operand 8 states and 188 transitions. [2024-06-28 01:55:06,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 366 transitions, 5298 flow [2024-06-28 01:55:07,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 366 transitions, 5051 flow, removed 38 selfloop flow, removed 6 redundant places. [2024-06-28 01:55:07,368 INFO L231 Difference]: Finished difference. Result has 201 places, 320 transitions, 4438 flow [2024-06-28 01:55:07,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4065, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4438, PETRI_PLACES=201, PETRI_TRANSITIONS=320} [2024-06-28 01:55:07,369 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 149 predicate places. [2024-06-28 01:55:07,369 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 320 transitions, 4438 flow [2024-06-28 01:55:07,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:07,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:55:07,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:55:07,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 01:55:07,370 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:55:07,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:55:07,370 INFO L85 PathProgramCache]: Analyzing trace with hash -2078227757, now seen corresponding path program 1 times [2024-06-28 01:55:07,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:55:07,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585237516] [2024-06-28 01:55:07,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:55:07,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:55:07,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:55:07,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:55:07,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:55:07,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585237516] [2024-06-28 01:55:07,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585237516] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:55:07,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:55:07,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:55:07,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733477909] [2024-06-28 01:55:07,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:55:07,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:55:07,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:55:07,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:55:07,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:55:07,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:55:07,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 320 transitions, 4438 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:07,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:55:07,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:55:07,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:55:09,796 INFO L124 PetriNetUnfolderBase]: 6736/10382 cut-off events. [2024-06-28 01:55:09,797 INFO L125 PetriNetUnfolderBase]: For 266210/266219 co-relation queries the response was YES. [2024-06-28 01:55:09,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66594 conditions, 10382 events. 6736/10382 cut-off events. For 266210/266219 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 62927 event pairs, 1740 based on Foata normal form. 8/10166 useless extension candidates. Maximal degree in co-relation 66499. Up to 9423 conditions per place. [2024-06-28 01:55:09,887 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 342 selfloop transitions, 78 changer transitions 0/427 dead transitions. [2024-06-28 01:55:09,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 427 transitions, 6567 flow [2024-06-28 01:55:09,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:55:09,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:55:09,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 194 transitions. [2024-06-28 01:55:09,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46859903381642515 [2024-06-28 01:55:09,889 INFO L175 Difference]: Start difference. First operand has 201 places, 320 transitions, 4438 flow. Second operand 9 states and 194 transitions. [2024-06-28 01:55:09,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 427 transitions, 6567 flow [2024-06-28 01:55:10,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 427 transitions, 6168 flow, removed 37 selfloop flow, removed 6 redundant places. [2024-06-28 01:55:10,557 INFO L231 Difference]: Finished difference. Result has 209 places, 375 transitions, 5167 flow [2024-06-28 01:55:10,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4091, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5167, PETRI_PLACES=209, PETRI_TRANSITIONS=375} [2024-06-28 01:55:10,557 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 157 predicate places. [2024-06-28 01:55:10,558 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 375 transitions, 5167 flow [2024-06-28 01:55:10,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:10,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:55:10,558 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:55:10,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 01:55:10,558 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:55:10,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:55:10,559 INFO L85 PathProgramCache]: Analyzing trace with hash 638361275, now seen corresponding path program 2 times [2024-06-28 01:55:10,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:55:10,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809233159] [2024-06-28 01:55:10,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:55:10,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:55:10,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:55:10,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:55:10,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:55:10,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809233159] [2024-06-28 01:55:10,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809233159] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:55:10,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:55:10,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:55:10,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164335527] [2024-06-28 01:55:10,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:55:10,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:55:10,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:55:10,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:55:10,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:55:11,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:55:11,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 375 transitions, 5167 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:11,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:55:11,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:55:11,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:55:12,855 INFO L124 PetriNetUnfolderBase]: 6875/10584 cut-off events. [2024-06-28 01:55:12,855 INFO L125 PetriNetUnfolderBase]: For 278631/278647 co-relation queries the response was YES. [2024-06-28 01:55:12,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69235 conditions, 10584 events. 6875/10584 cut-off events. For 278631/278647 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 64259 event pairs, 1945 based on Foata normal form. 18/10383 useless extension candidates. Maximal degree in co-relation 69134. Up to 9539 conditions per place. [2024-06-28 01:55:12,947 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 335 selfloop transitions, 124 changer transitions 0/466 dead transitions. [2024-06-28 01:55:12,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 466 transitions, 7194 flow [2024-06-28 01:55:12,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:55:12,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:55:12,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 185 transitions. [2024-06-28 01:55:12,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5027173913043478 [2024-06-28 01:55:12,948 INFO L175 Difference]: Start difference. First operand has 209 places, 375 transitions, 5167 flow. Second operand 8 states and 185 transitions. [2024-06-28 01:55:12,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 466 transitions, 7194 flow [2024-06-28 01:55:13,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 466 transitions, 6988 flow, removed 102 selfloop flow, removed 1 redundant places. [2024-06-28 01:55:13,524 INFO L231 Difference]: Finished difference. Result has 219 places, 424 transitions, 6164 flow [2024-06-28 01:55:13,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5051, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6164, PETRI_PLACES=219, PETRI_TRANSITIONS=424} [2024-06-28 01:55:13,524 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 167 predicate places. [2024-06-28 01:55:13,525 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 424 transitions, 6164 flow [2024-06-28 01:55:13,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:13,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:55:13,525 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:55:13,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 01:55:13,525 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:55:13,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:55:13,526 INFO L85 PathProgramCache]: Analyzing trace with hash -981949239, now seen corresponding path program 3 times [2024-06-28 01:55:13,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:55:13,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085913284] [2024-06-28 01:55:13,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:55:13,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:55:13,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:55:14,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:55:14,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:55:14,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085913284] [2024-06-28 01:55:14,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085913284] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:55:14,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:55:14,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:55:14,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39971764] [2024-06-28 01:55:14,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:55:14,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:55:14,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:55:14,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:55:14,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:55:14,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:55:14,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 424 transitions, 6164 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:14,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:55:14,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:55:14,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:55:16,204 INFO L124 PetriNetUnfolderBase]: 7277/11132 cut-off events. [2024-06-28 01:55:16,204 INFO L125 PetriNetUnfolderBase]: For 302881/302897 co-relation queries the response was YES. [2024-06-28 01:55:16,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76391 conditions, 11132 events. 7277/11132 cut-off events. For 302881/302897 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 67207 event pairs, 2033 based on Foata normal form. 20/10929 useless extension candidates. Maximal degree in co-relation 76284. Up to 9879 conditions per place. [2024-06-28 01:55:16,304 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 365 selfloop transitions, 222 changer transitions 0/594 dead transitions. [2024-06-28 01:55:16,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 594 transitions, 9960 flow [2024-06-28 01:55:16,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:55:16,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:55:16,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 186 transitions. [2024-06-28 01:55:16,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5054347826086957 [2024-06-28 01:55:16,306 INFO L175 Difference]: Start difference. First operand has 219 places, 424 transitions, 6164 flow. Second operand 8 states and 186 transitions. [2024-06-28 01:55:16,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 594 transitions, 9960 flow [2024-06-28 01:55:16,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 594 transitions, 9552 flow, removed 109 selfloop flow, removed 2 redundant places. [2024-06-28 01:55:16,952 INFO L231 Difference]: Finished difference. Result has 228 places, 535 transitions, 8484 flow [2024-06-28 01:55:16,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5950, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8484, PETRI_PLACES=228, PETRI_TRANSITIONS=535} [2024-06-28 01:55:16,952 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 176 predicate places. [2024-06-28 01:55:16,952 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 535 transitions, 8484 flow [2024-06-28 01:55:16,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:16,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:55:16,953 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:55:16,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 01:55:16,953 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:55:16,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:55:16,953 INFO L85 PathProgramCache]: Analyzing trace with hash -980496176, now seen corresponding path program 1 times [2024-06-28 01:55:16,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:55:16,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463224362] [2024-06-28 01:55:16,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:55:16,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:55:16,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:55:17,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:55:17,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:55:17,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463224362] [2024-06-28 01:55:17,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463224362] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:55:17,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:55:17,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:55:17,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655572628] [2024-06-28 01:55:17,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:55:17,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:55:17,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:55:17,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:55:17,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:55:17,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:55:17,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 535 transitions, 8484 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:17,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:55:17,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:55:17,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:55:19,778 INFO L124 PetriNetUnfolderBase]: 7402/11388 cut-off events. [2024-06-28 01:55:19,779 INFO L125 PetriNetUnfolderBase]: For 319397/319413 co-relation queries the response was YES. [2024-06-28 01:55:19,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78859 conditions, 11388 events. 7402/11388 cut-off events. For 319397/319413 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 69573 event pairs, 2506 based on Foata normal form. 18/11160 useless extension candidates. Maximal degree in co-relation 78747. Up to 10320 conditions per place. [2024-06-28 01:55:19,884 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 520 selfloop transitions, 85 changer transitions 0/612 dead transitions. [2024-06-28 01:55:19,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 612 transitions, 10537 flow [2024-06-28 01:55:19,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:55:19,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:55:19,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 185 transitions. [2024-06-28 01:55:19,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5027173913043478 [2024-06-28 01:55:19,886 INFO L175 Difference]: Start difference. First operand has 228 places, 535 transitions, 8484 flow. Second operand 8 states and 185 transitions. [2024-06-28 01:55:19,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 612 transitions, 10537 flow [2024-06-28 01:55:20,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 612 transitions, 10114 flow, removed 108 selfloop flow, removed 3 redundant places. [2024-06-28 01:55:20,542 INFO L231 Difference]: Finished difference. Result has 236 places, 562 transitions, 8690 flow [2024-06-28 01:55:20,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=8065, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=535, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=469, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8690, PETRI_PLACES=236, PETRI_TRANSITIONS=562} [2024-06-28 01:55:20,543 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 184 predicate places. [2024-06-28 01:55:20,543 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 562 transitions, 8690 flow [2024-06-28 01:55:20,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:20,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:55:20,544 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:55:20,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 01:55:20,544 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:55:20,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:55:20,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1025730849, now seen corresponding path program 4 times [2024-06-28 01:55:20,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:55:20,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975128194] [2024-06-28 01:55:20,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:55:20,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:55:20,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:55:21,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:55:21,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:55:21,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975128194] [2024-06-28 01:55:21,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975128194] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:55:21,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:55:21,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:55:21,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768235499] [2024-06-28 01:55:21,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:55:21,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:55:21,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:55:21,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:55:21,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:55:21,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:55:21,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 562 transitions, 8690 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:21,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:55:21,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:55:21,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:55:23,532 INFO L124 PetriNetUnfolderBase]: 7411/11351 cut-off events. [2024-06-28 01:55:23,532 INFO L125 PetriNetUnfolderBase]: For 331760/331766 co-relation queries the response was YES. [2024-06-28 01:55:23,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79704 conditions, 11351 events. 7411/11351 cut-off events. For 331760/331766 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 68859 event pairs, 2045 based on Foata normal form. 10/11125 useless extension candidates. Maximal degree in co-relation 79588. Up to 10054 conditions per place. [2024-06-28 01:55:23,641 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 379 selfloop transitions, 239 changer transitions 0/625 dead transitions. [2024-06-28 01:55:23,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 625 transitions, 10637 flow [2024-06-28 01:55:23,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:55:23,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:55:23,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 181 transitions. [2024-06-28 01:55:23,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49184782608695654 [2024-06-28 01:55:23,645 INFO L175 Difference]: Start difference. First operand has 236 places, 562 transitions, 8690 flow. Second operand 8 states and 181 transitions. [2024-06-28 01:55:23,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 625 transitions, 10637 flow [2024-06-28 01:55:24,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 625 transitions, 10304 flow, removed 116 selfloop flow, removed 3 redundant places. [2024-06-28 01:55:24,667 INFO L231 Difference]: Finished difference. Result has 242 places, 572 transitions, 9180 flow [2024-06-28 01:55:24,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=8410, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=562, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=229, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9180, PETRI_PLACES=242, PETRI_TRANSITIONS=572} [2024-06-28 01:55:24,668 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 190 predicate places. [2024-06-28 01:55:24,668 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 572 transitions, 9180 flow [2024-06-28 01:55:24,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:24,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:55:24,668 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:55:24,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 01:55:24,669 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:55:24,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:55:24,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1050058259, now seen corresponding path program 5 times [2024-06-28 01:55:24,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:55:24,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911267227] [2024-06-28 01:55:24,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:55:24,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:55:24,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:55:25,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:55:25,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:55:25,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911267227] [2024-06-28 01:55:25,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911267227] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:55:25,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:55:25,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:55:25,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482222077] [2024-06-28 01:55:25,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:55:25,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:55:25,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:55:25,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:55:25,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:55:25,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:55:25,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 572 transitions, 9180 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:25,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:55:25,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:55:25,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:55:27,740 INFO L124 PetriNetUnfolderBase]: 7468/11451 cut-off events. [2024-06-28 01:55:27,740 INFO L125 PetriNetUnfolderBase]: For 339270/339290 co-relation queries the response was YES. [2024-06-28 01:55:27,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80927 conditions, 11451 events. 7468/11451 cut-off events. For 339270/339290 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 69856 event pairs, 2394 based on Foata normal form. 23/11242 useless extension candidates. Maximal degree in co-relation 80809. Up to 10108 conditions per place. [2024-06-28 01:55:27,877 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 365 selfloop transitions, 257 changer transitions 0/629 dead transitions. [2024-06-28 01:55:27,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 629 transitions, 11085 flow [2024-06-28 01:55:27,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:55:27,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:55:27,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 159 transitions. [2024-06-28 01:55:27,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4937888198757764 [2024-06-28 01:55:27,879 INFO L175 Difference]: Start difference. First operand has 242 places, 572 transitions, 9180 flow. Second operand 7 states and 159 transitions. [2024-06-28 01:55:27,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 629 transitions, 11085 flow [2024-06-28 01:55:28,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 629 transitions, 10622 flow, removed 93 selfloop flow, removed 4 redundant places. [2024-06-28 01:55:28,977 INFO L231 Difference]: Finished difference. Result has 245 places, 588 transitions, 9641 flow [2024-06-28 01:55:28,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=8770, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=572, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=241, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9641, PETRI_PLACES=245, PETRI_TRANSITIONS=588} [2024-06-28 01:55:28,978 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 193 predicate places. [2024-06-28 01:55:28,978 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 588 transitions, 9641 flow [2024-06-28 01:55:28,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:28,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:55:28,979 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:55:28,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 01:55:28,979 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:55:28,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:55:28,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1049729969, now seen corresponding path program 6 times [2024-06-28 01:55:28,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:55:28,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126266217] [2024-06-28 01:55:28,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:55:28,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:55:28,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:55:29,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:55:29,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:55:29,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126266217] [2024-06-28 01:55:29,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126266217] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:55:29,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:55:29,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:55:29,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320308612] [2024-06-28 01:55:29,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:55:29,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:55:29,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:55:29,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:55:29,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:55:29,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:55:29,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 588 transitions, 9641 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:29,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:55:29,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:55:29,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:55:31,955 INFO L124 PetriNetUnfolderBase]: 7549/11533 cut-off events. [2024-06-28 01:55:31,956 INFO L125 PetriNetUnfolderBase]: For 350673/350681 co-relation queries the response was YES. [2024-06-28 01:55:32,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82195 conditions, 11533 events. 7549/11533 cut-off events. For 350673/350681 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 69972 event pairs, 1797 based on Foata normal form. 10/11309 useless extension candidates. Maximal degree in co-relation 82076. Up to 10185 conditions per place. [2024-06-28 01:55:32,065 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 374 selfloop transitions, 276 changer transitions 0/657 dead transitions. [2024-06-28 01:55:32,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 657 transitions, 11809 flow [2024-06-28 01:55:32,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:55:32,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:55:32,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 155 transitions. [2024-06-28 01:55:32,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4813664596273292 [2024-06-28 01:55:32,067 INFO L175 Difference]: Start difference. First operand has 245 places, 588 transitions, 9641 flow. Second operand 7 states and 155 transitions. [2024-06-28 01:55:32,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 657 transitions, 11809 flow [2024-06-28 01:55:33,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 657 transitions, 11321 flow, removed 66 selfloop flow, removed 6 redundant places. [2024-06-28 01:55:33,156 INFO L231 Difference]: Finished difference. Result has 246 places, 612 transitions, 10208 flow [2024-06-28 01:55:33,156 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=9183, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=588, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=252, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10208, PETRI_PLACES=246, PETRI_TRANSITIONS=612} [2024-06-28 01:55:33,157 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 194 predicate places. [2024-06-28 01:55:33,157 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 612 transitions, 10208 flow [2024-06-28 01:55:33,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:33,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:55:33,157 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:55:33,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 01:55:33,158 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:55:33,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:55:33,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1049729566, now seen corresponding path program 2 times [2024-06-28 01:55:33,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:55:33,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455824108] [2024-06-28 01:55:33,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:55:33,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:55:33,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:55:33,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:55:33,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:55:33,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455824108] [2024-06-28 01:55:33,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455824108] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:55:33,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:55:33,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:55:33,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117007676] [2024-06-28 01:55:33,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:55:33,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:55:33,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:55:33,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:55:33,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:55:33,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:55:33,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 612 transitions, 10208 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:33,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:55:33,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:55:33,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:55:36,062 INFO L124 PetriNetUnfolderBase]: 7617/11685 cut-off events. [2024-06-28 01:55:36,062 INFO L125 PetriNetUnfolderBase]: For 342254/342274 co-relation queries the response was YES. [2024-06-28 01:55:36,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82450 conditions, 11685 events. 7617/11685 cut-off events. For 342254/342274 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 71442 event pairs, 2431 based on Foata normal form. 22/11458 useless extension candidates. Maximal degree in co-relation 82333. Up to 10576 conditions per place. [2024-06-28 01:55:36,411 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 558 selfloop transitions, 92 changer transitions 0/657 dead transitions. [2024-06-28 01:55:36,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 657 transitions, 11985 flow [2024-06-28 01:55:36,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:55:36,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:55:36,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 159 transitions. [2024-06-28 01:55:36,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4937888198757764 [2024-06-28 01:55:36,412 INFO L175 Difference]: Start difference. First operand has 246 places, 612 transitions, 10208 flow. Second operand 7 states and 159 transitions. [2024-06-28 01:55:36,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 657 transitions, 11985 flow [2024-06-28 01:55:37,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 657 transitions, 11557 flow, removed 80 selfloop flow, removed 3 redundant places. [2024-06-28 01:55:37,612 INFO L231 Difference]: Finished difference. Result has 250 places, 618 transitions, 10073 flow [2024-06-28 01:55:37,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=9782, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=612, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=526, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10073, PETRI_PLACES=250, PETRI_TRANSITIONS=618} [2024-06-28 01:55:37,613 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 198 predicate places. [2024-06-28 01:55:37,613 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 618 transitions, 10073 flow [2024-06-28 01:55:37,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:37,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:55:37,613 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:55:37,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 01:55:37,614 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:55:37,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:55:37,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1787556107, now seen corresponding path program 6 times [2024-06-28 01:55:37,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:55:37,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521654828] [2024-06-28 01:55:37,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:55:37,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:55:37,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:55:38,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:55:38,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:55:38,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521654828] [2024-06-28 01:55:38,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521654828] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:55:38,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:55:38,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:55:38,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502335999] [2024-06-28 01:55:38,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:55:38,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:55:38,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:55:38,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:55:38,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:55:38,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:55:38,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 618 transitions, 10073 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:38,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:55:38,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:55:38,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:55:40,868 INFO L124 PetriNetUnfolderBase]: 7932/12119 cut-off events. [2024-06-28 01:55:40,868 INFO L125 PetriNetUnfolderBase]: For 383484/383496 co-relation queries the response was YES. [2024-06-28 01:55:40,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86266 conditions, 12119 events. 7932/12119 cut-off events. For 383484/383496 co-relation queries the response was YES. Maximal size of possible extension queue 472. Compared 74256 event pairs, 1535 based on Foata normal form. 24/11888 useless extension candidates. Maximal degree in co-relation 86148. Up to 9616 conditions per place. [2024-06-28 01:55:41,013 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 472 selfloop transitions, 217 changer transitions 0/696 dead transitions. [2024-06-28 01:55:41,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 696 transitions, 12223 flow [2024-06-28 01:55:41,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:55:41,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:55:41,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 239 transitions. [2024-06-28 01:55:41,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5195652173913043 [2024-06-28 01:55:41,015 INFO L175 Difference]: Start difference. First operand has 250 places, 618 transitions, 10073 flow. Second operand 10 states and 239 transitions. [2024-06-28 01:55:41,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 696 transitions, 12223 flow [2024-06-28 01:55:42,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 696 transitions, 12048 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-06-28 01:55:42,105 INFO L231 Difference]: Finished difference. Result has 256 places, 625 transitions, 10547 flow [2024-06-28 01:55:42,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=9900, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=618, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=212, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=403, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10547, PETRI_PLACES=256, PETRI_TRANSITIONS=625} [2024-06-28 01:55:42,106 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 204 predicate places. [2024-06-28 01:55:42,106 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 625 transitions, 10547 flow [2024-06-28 01:55:42,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:42,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:55:42,106 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:55:42,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 01:55:42,107 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:55:42,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:55:42,107 INFO L85 PathProgramCache]: Analyzing trace with hash 360289329, now seen corresponding path program 7 times [2024-06-28 01:55:42,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:55:42,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078644528] [2024-06-28 01:55:42,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:55:42,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:55:42,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:55:42,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:55:42,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:55:42,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078644528] [2024-06-28 01:55:42,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078644528] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:55:42,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:55:42,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:55:42,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046785712] [2024-06-28 01:55:42,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:55:42,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:55:42,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:55:42,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:55:42,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:55:42,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:55:42,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 625 transitions, 10547 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:42,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:55:42,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:55:42,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:55:45,108 INFO L124 PetriNetUnfolderBase]: 8074/12348 cut-off events. [2024-06-28 01:55:45,108 INFO L125 PetriNetUnfolderBase]: For 411933/411945 co-relation queries the response was YES. [2024-06-28 01:55:45,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89671 conditions, 12348 events. 8074/12348 cut-off events. For 411933/411945 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 75849 event pairs, 1451 based on Foata normal form. 24/12116 useless extension candidates. Maximal degree in co-relation 89552. Up to 7944 conditions per place. [2024-06-28 01:55:45,245 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 444 selfloop transitions, 238 changer transitions 0/689 dead transitions. [2024-06-28 01:55:45,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 689 transitions, 12665 flow [2024-06-28 01:55:45,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:55:45,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:55:45,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2024-06-28 01:55:45,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5190217391304348 [2024-06-28 01:55:45,247 INFO L175 Difference]: Start difference. First operand has 256 places, 625 transitions, 10547 flow. Second operand 8 states and 191 transitions. [2024-06-28 01:55:45,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 689 transitions, 12665 flow [2024-06-28 01:55:46,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 689 transitions, 12364 flow, removed 47 selfloop flow, removed 4 redundant places. [2024-06-28 01:55:46,545 INFO L231 Difference]: Finished difference. Result has 261 places, 634 transitions, 11010 flow [2024-06-28 01:55:46,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=10246, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=625, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=231, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11010, PETRI_PLACES=261, PETRI_TRANSITIONS=634} [2024-06-28 01:55:46,546 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 209 predicate places. [2024-06-28 01:55:46,546 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 634 transitions, 11010 flow [2024-06-28 01:55:46,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:46,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:55:46,546 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:55:46,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 01:55:46,546 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:55:46,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:55:46,547 INFO L85 PathProgramCache]: Analyzing trace with hash 64831119, now seen corresponding path program 8 times [2024-06-28 01:55:46,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:55:46,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699956550] [2024-06-28 01:55:46,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:55:46,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:55:46,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:55:47,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:55:47,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:55:47,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699956550] [2024-06-28 01:55:47,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699956550] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:55:47,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:55:47,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:55:47,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482009106] [2024-06-28 01:55:47,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:55:47,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:55:47,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:55:47,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:55:47,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:55:47,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:55:47,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 634 transitions, 11010 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:47,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:55:47,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:55:47,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:55:49,838 INFO L124 PetriNetUnfolderBase]: 8183/12521 cut-off events. [2024-06-28 01:55:49,838 INFO L125 PetriNetUnfolderBase]: For 423565/423577 co-relation queries the response was YES. [2024-06-28 01:55:49,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91905 conditions, 12521 events. 8183/12521 cut-off events. For 423565/423577 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 77467 event pairs, 1659 based on Foata normal form. 28/12291 useless extension candidates. Maximal degree in co-relation 91783. Up to 10742 conditions per place. [2024-06-28 01:55:49,977 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 504 selfloop transitions, 179 changer transitions 0/690 dead transitions. [2024-06-28 01:55:49,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 690 transitions, 12811 flow [2024-06-28 01:55:49,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:55:49,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:55:49,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 188 transitions. [2024-06-28 01:55:49,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5108695652173914 [2024-06-28 01:55:49,979 INFO L175 Difference]: Start difference. First operand has 261 places, 634 transitions, 11010 flow. Second operand 8 states and 188 transitions. [2024-06-28 01:55:49,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 690 transitions, 12811 flow [2024-06-28 01:55:51,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 690 transitions, 12429 flow, removed 79 selfloop flow, removed 3 redundant places. [2024-06-28 01:55:51,391 INFO L231 Difference]: Finished difference. Result has 266 places, 640 transitions, 11122 flow [2024-06-28 01:55:51,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=10628, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=634, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=455, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11122, PETRI_PLACES=266, PETRI_TRANSITIONS=640} [2024-06-28 01:55:51,392 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 214 predicate places. [2024-06-28 01:55:51,392 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 640 transitions, 11122 flow [2024-06-28 01:55:51,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:51,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:55:51,392 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:55:51,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 01:55:51,392 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:55:51,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:55:51,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1530765596, now seen corresponding path program 3 times [2024-06-28 01:55:51,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:55:51,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363976587] [2024-06-28 01:55:51,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:55:51,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:55:51,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:55:51,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:55:51,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:55:51,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363976587] [2024-06-28 01:55:51,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363976587] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:55:51,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:55:51,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:55:51,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712086464] [2024-06-28 01:55:51,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:55:51,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:55:51,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:55:51,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:55:51,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:55:51,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:55:51,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 640 transitions, 11122 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:51,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:55:51,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:55:51,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:55:54,704 INFO L124 PetriNetUnfolderBase]: 8177/12524 cut-off events. [2024-06-28 01:55:54,704 INFO L125 PetriNetUnfolderBase]: For 407661/407681 co-relation queries the response was YES. [2024-06-28 01:55:54,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91682 conditions, 12524 events. 8177/12524 cut-off events. For 407661/407681 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 77598 event pairs, 2644 based on Foata normal form. 22/12306 useless extension candidates. Maximal degree in co-relation 91558. Up to 11560 conditions per place. [2024-06-28 01:55:54,845 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 600 selfloop transitions, 66 changer transitions 0/673 dead transitions. [2024-06-28 01:55:54,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 673 transitions, 12731 flow [2024-06-28 01:55:54,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:55:54,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:55:54,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 139 transitions. [2024-06-28 01:55:54,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5036231884057971 [2024-06-28 01:55:54,847 INFO L175 Difference]: Start difference. First operand has 266 places, 640 transitions, 11122 flow. Second operand 6 states and 139 transitions. [2024-06-28 01:55:54,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 673 transitions, 12731 flow [2024-06-28 01:55:56,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 673 transitions, 12332 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-28 01:55:56,460 INFO L231 Difference]: Finished difference. Result has 266 places, 640 transitions, 10866 flow [2024-06-28 01:55:56,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=10723, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=640, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=574, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=10866, PETRI_PLACES=266, PETRI_TRANSITIONS=640} [2024-06-28 01:55:56,461 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 214 predicate places. [2024-06-28 01:55:56,461 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 640 transitions, 10866 flow [2024-06-28 01:55:56,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:56,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:55:56,461 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:55:56,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 01:55:56,462 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:55:56,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:55:56,462 INFO L85 PathProgramCache]: Analyzing trace with hash -145484499, now seen corresponding path program 7 times [2024-06-28 01:55:56,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:55:56,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767722635] [2024-06-28 01:55:56,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:55:56,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:55:56,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:55:56,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:55:56,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:55:56,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767722635] [2024-06-28 01:55:56,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767722635] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:55:56,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:55:56,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:55:56,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98020658] [2024-06-28 01:55:56,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:55:56,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:55:56,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:55:56,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:55:56,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:55:56,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:55:56,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 640 transitions, 10866 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:56,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:55:56,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:55:56,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:55:59,628 INFO L124 PetriNetUnfolderBase]: 8231/12602 cut-off events. [2024-06-28 01:55:59,629 INFO L125 PetriNetUnfolderBase]: For 410375/410395 co-relation queries the response was YES. [2024-06-28 01:55:59,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91209 conditions, 12602 events. 8231/12602 cut-off events. For 410375/410395 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 78084 event pairs, 2620 based on Foata normal form. 26/12387 useless extension candidates. Maximal degree in co-relation 91084. Up to 11448 conditions per place. [2024-06-28 01:55:59,774 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 520 selfloop transitions, 168 changer transitions 0/695 dead transitions. [2024-06-28 01:55:59,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 695 transitions, 12782 flow [2024-06-28 01:55:59,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:55:59,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:55:59,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-06-28 01:55:59,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5253623188405797 [2024-06-28 01:55:59,776 INFO L175 Difference]: Start difference. First operand has 266 places, 640 transitions, 10866 flow. Second operand 6 states and 145 transitions. [2024-06-28 01:55:59,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 695 transitions, 12782 flow [2024-06-28 01:56:01,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 695 transitions, 12494 flow, removed 44 selfloop flow, removed 5 redundant places. [2024-06-28 01:56:01,239 INFO L231 Difference]: Finished difference. Result has 269 places, 655 transitions, 11396 flow [2024-06-28 01:56:01,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=10603, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=640, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=474, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=11396, PETRI_PLACES=269, PETRI_TRANSITIONS=655} [2024-06-28 01:56:01,240 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 217 predicate places. [2024-06-28 01:56:01,240 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 655 transitions, 11396 flow [2024-06-28 01:56:01,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:01,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:56:01,241 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:56:01,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 01:56:01,241 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:56:01,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:56:01,242 INFO L85 PathProgramCache]: Analyzing trace with hash -871610169, now seen corresponding path program 1 times [2024-06-28 01:56:01,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:56:01,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949173217] [2024-06-28 01:56:01,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:56:01,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:56:01,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:56:01,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:56:01,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:56:01,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949173217] [2024-06-28 01:56:01,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949173217] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:56:01,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:56:01,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:56:01,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899037523] [2024-06-28 01:56:01,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:56:01,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:56:01,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:56:01,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:56:01,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:56:01,910 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:56:01,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 655 transitions, 11396 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:01,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:56:01,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:56:01,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:56:04,722 INFO L124 PetriNetUnfolderBase]: 8318/12763 cut-off events. [2024-06-28 01:56:04,722 INFO L125 PetriNetUnfolderBase]: For 424702/424747 co-relation queries the response was YES. [2024-06-28 01:56:04,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94278 conditions, 12763 events. 8318/12763 cut-off events. For 424702/424747 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 79740 event pairs, 2483 based on Foata normal form. 32/12541 useless extension candidates. Maximal degree in co-relation 94150. Up to 11568 conditions per place. [2024-06-28 01:56:04,853 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 647 selfloop transitions, 74 changer transitions 0/728 dead transitions. [2024-06-28 01:56:04,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 728 transitions, 14008 flow [2024-06-28 01:56:04,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:56:04,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:56:04,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 171 transitions. [2024-06-28 01:56:04,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46467391304347827 [2024-06-28 01:56:04,855 INFO L175 Difference]: Start difference. First operand has 269 places, 655 transitions, 11396 flow. Second operand 8 states and 171 transitions. [2024-06-28 01:56:04,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 728 transitions, 14008 flow [2024-06-28 01:56:05,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 728 transitions, 13926 flow, removed 40 selfloop flow, removed 1 redundant places. [2024-06-28 01:56:05,977 INFO L231 Difference]: Finished difference. Result has 278 places, 689 transitions, 12234 flow [2024-06-28 01:56:05,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=11314, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=655, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=588, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12234, PETRI_PLACES=278, PETRI_TRANSITIONS=689} [2024-06-28 01:56:05,978 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 226 predicate places. [2024-06-28 01:56:05,978 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 689 transitions, 12234 flow [2024-06-28 01:56:05,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:05,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:56:05,979 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:56:05,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 01:56:05,979 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:56:05,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:56:05,979 INFO L85 PathProgramCache]: Analyzing trace with hash -871490199, now seen corresponding path program 2 times [2024-06-28 01:56:05,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:56:05,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666129587] [2024-06-28 01:56:05,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:56:05,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:56:05,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:56:06,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:56:06,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:56:06,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666129587] [2024-06-28 01:56:06,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666129587] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:56:06,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:56:06,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:56:06,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246377410] [2024-06-28 01:56:06,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:56:06,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:56:06,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:56:06,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:56:06,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:56:06,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:56:06,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 689 transitions, 12234 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:06,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:56:06,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:56:06,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:56:09,497 INFO L124 PetriNetUnfolderBase]: 8642/13213 cut-off events. [2024-06-28 01:56:09,497 INFO L125 PetriNetUnfolderBase]: For 473099/473099 co-relation queries the response was YES. [2024-06-28 01:56:09,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100792 conditions, 13213 events. 8642/13213 cut-off events. For 473099/473099 co-relation queries the response was YES. Maximal size of possible extension queue 519. Compared 82207 event pairs, 3090 based on Foata normal form. 6/12967 useless extension candidates. Maximal degree in co-relation 100659. Up to 12073 conditions per place. [2024-06-28 01:56:09,659 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 702 selfloop transitions, 43 changer transitions 0/752 dead transitions. [2024-06-28 01:56:09,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 752 transitions, 14564 flow [2024-06-28 01:56:09,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:56:09,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:56:09,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 179 transitions. [2024-06-28 01:56:09,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48641304347826086 [2024-06-28 01:56:09,660 INFO L175 Difference]: Start difference. First operand has 278 places, 689 transitions, 12234 flow. Second operand 8 states and 179 transitions. [2024-06-28 01:56:09,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 752 transitions, 14564 flow [2024-06-28 01:56:11,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 752 transitions, 14428 flow, removed 65 selfloop flow, removed 2 redundant places. [2024-06-28 01:56:11,391 INFO L231 Difference]: Finished difference. Result has 285 places, 709 transitions, 12603 flow [2024-06-28 01:56:11,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=12134, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=689, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=653, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12603, PETRI_PLACES=285, PETRI_TRANSITIONS=709} [2024-06-28 01:56:11,392 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 233 predicate places. [2024-06-28 01:56:11,392 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 709 transitions, 12603 flow [2024-06-28 01:56:11,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:11,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:56:11,392 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:56:11,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 01:56:11,392 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:56:11,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:56:11,393 INFO L85 PathProgramCache]: Analyzing trace with hash -145298809, now seen corresponding path program 3 times [2024-06-28 01:56:11,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:56:11,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390206456] [2024-06-28 01:56:11,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:56:11,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:56:11,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:56:11,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:56:11,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:56:11,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390206456] [2024-06-28 01:56:11,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390206456] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:56:11,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:56:11,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:56:11,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434790527] [2024-06-28 01:56:11,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:56:11,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:56:11,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:56:11,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:56:11,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:56:11,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:56:11,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 709 transitions, 12603 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:11,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:56:11,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:56:11,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:56:15,022 INFO L124 PetriNetUnfolderBase]: 8923/13645 cut-off events. [2024-06-28 01:56:15,023 INFO L125 PetriNetUnfolderBase]: For 503723/503743 co-relation queries the response was YES. [2024-06-28 01:56:15,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106225 conditions, 13645 events. 8923/13645 cut-off events. For 503723/503743 co-relation queries the response was YES. Maximal size of possible extension queue 537. Compared 85700 event pairs, 2565 based on Foata normal form. 26/13399 useless extension candidates. Maximal degree in co-relation 106089. Up to 12308 conditions per place. [2024-06-28 01:56:15,210 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 682 selfloop transitions, 88 changer transitions 0/777 dead transitions. [2024-06-28 01:56:15,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 777 transitions, 15027 flow [2024-06-28 01:56:15,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:56:15,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:56:15,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-28 01:56:15,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5186335403726708 [2024-06-28 01:56:15,220 INFO L175 Difference]: Start difference. First operand has 285 places, 709 transitions, 12603 flow. Second operand 7 states and 167 transitions. [2024-06-28 01:56:15,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 777 transitions, 15027 flow [2024-06-28 01:56:16,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 777 transitions, 14861 flow, removed 73 selfloop flow, removed 2 redundant places. [2024-06-28 01:56:16,794 INFO L231 Difference]: Finished difference. Result has 292 places, 733 transitions, 13196 flow [2024-06-28 01:56:16,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=12440, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=709, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=624, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=13196, PETRI_PLACES=292, PETRI_TRANSITIONS=733} [2024-06-28 01:56:16,795 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 240 predicate places. [2024-06-28 01:56:16,795 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 733 transitions, 13196 flow [2024-06-28 01:56:16,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:16,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:56:16,796 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:56:16,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 01:56:16,796 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:56:16,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:56:16,796 INFO L85 PathProgramCache]: Analyzing trace with hash -145022754, now seen corresponding path program 1 times [2024-06-28 01:56:16,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:56:16,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313380539] [2024-06-28 01:56:16,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:56:16,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:56:16,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:56:18,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:56:18,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:56:18,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313380539] [2024-06-28 01:56:18,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313380539] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:56:18,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:56:18,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:56:18,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158126384] [2024-06-28 01:56:18,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:56:18,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:56:18,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:56:18,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:56:18,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:56:18,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:56:18,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 733 transitions, 13196 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:18,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:56:18,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:56:18,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:56:21,566 INFO L124 PetriNetUnfolderBase]: 8918/13655 cut-off events. [2024-06-28 01:56:21,566 INFO L125 PetriNetUnfolderBase]: For 525991/525991 co-relation queries the response was YES. [2024-06-28 01:56:21,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108426 conditions, 13655 events. 8918/13655 cut-off events. For 525991/525991 co-relation queries the response was YES. Maximal size of possible extension queue 537. Compared 85397 event pairs, 3302 based on Foata normal form. 2/13382 useless extension candidates. Maximal degree in co-relation 108285. Up to 12683 conditions per place. [2024-06-28 01:56:21,887 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 721 selfloop transitions, 25 changer transitions 0/753 dead transitions. [2024-06-28 01:56:21,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 753 transitions, 14868 flow [2024-06-28 01:56:21,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:56:21,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:56:21,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 110 transitions. [2024-06-28 01:56:21,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4782608695652174 [2024-06-28 01:56:21,889 INFO L175 Difference]: Start difference. First operand has 292 places, 733 transitions, 13196 flow. Second operand 5 states and 110 transitions. [2024-06-28 01:56:21,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 753 transitions, 14868 flow [2024-06-28 01:56:23,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 753 transitions, 14740 flow, removed 57 selfloop flow, removed 2 redundant places. [2024-06-28 01:56:23,388 INFO L231 Difference]: Finished difference. Result has 295 places, 735 transitions, 13172 flow [2024-06-28 01:56:23,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=13068, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=733, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=708, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=13172, PETRI_PLACES=295, PETRI_TRANSITIONS=735} [2024-06-28 01:56:23,389 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 243 predicate places. [2024-06-28 01:56:23,389 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 735 transitions, 13172 flow [2024-06-28 01:56:23,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:23,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:56:23,390 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:56:23,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 01:56:23,390 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:56:23,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:56:23,390 INFO L85 PathProgramCache]: Analyzing trace with hash -567525341, now seen corresponding path program 1 times [2024-06-28 01:56:23,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:56:23,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577801400] [2024-06-28 01:56:23,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:56:23,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:56:23,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:56:24,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:56:24,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:56:24,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577801400] [2024-06-28 01:56:24,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577801400] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:56:24,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:56:24,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:56:24,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770280046] [2024-06-28 01:56:24,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:56:24,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:56:24,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:56:24,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:56:24,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:56:24,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:56:24,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 735 transitions, 13172 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 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) [2024-06-28 01:56:24,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:56:24,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:56:24,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:56:28,270 INFO L124 PetriNetUnfolderBase]: 9107/13924 cut-off events. [2024-06-28 01:56:28,270 INFO L125 PetriNetUnfolderBase]: For 549075/549128 co-relation queries the response was YES. [2024-06-28 01:56:28,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109906 conditions, 13924 events. 9107/13924 cut-off events. For 549075/549128 co-relation queries the response was YES. Maximal size of possible extension queue 549. Compared 86941 event pairs, 2283 based on Foata normal form. 50/13695 useless extension candidates. Maximal degree in co-relation 109763. Up to 12523 conditions per place. [2024-06-28 01:56:28,449 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 669 selfloop transitions, 136 changer transitions 0/812 dead transitions. [2024-06-28 01:56:28,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 812 transitions, 15288 flow [2024-06-28 01:56:28,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:56:28,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:56:28,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 222 transitions. [2024-06-28 01:56:28,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4826086956521739 [2024-06-28 01:56:28,460 INFO L175 Difference]: Start difference. First operand has 295 places, 735 transitions, 13172 flow. Second operand 10 states and 222 transitions. [2024-06-28 01:56:28,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 812 transitions, 15288 flow [2024-06-28 01:56:29,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 812 transitions, 15206 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-06-28 01:56:29,868 INFO L231 Difference]: Finished difference. Result has 305 places, 751 transitions, 13581 flow [2024-06-28 01:56:29,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=13090, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=735, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=602, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13581, PETRI_PLACES=305, PETRI_TRANSITIONS=751} [2024-06-28 01:56:29,868 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 253 predicate places. [2024-06-28 01:56:29,868 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 751 transitions, 13581 flow [2024-06-28 01:56:29,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 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) [2024-06-28 01:56:29,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:56:29,869 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:56:29,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 01:56:29,869 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:56:29,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:56:29,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1239863565, now seen corresponding path program 2 times [2024-06-28 01:56:29,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:56:29,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292240923] [2024-06-28 01:56:29,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:56:29,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:56:29,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:56:30,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:56:30,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:56:30,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292240923] [2024-06-28 01:56:30,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292240923] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:56:30,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:56:30,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:56:30,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113177603] [2024-06-28 01:56:30,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:56:30,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:56:30,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:56:30,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:56:30,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:56:30,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:56:30,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 751 transitions, 13581 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 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) [2024-06-28 01:56:30,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:56:30,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:56:30,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:56:34,872 INFO L124 PetriNetUnfolderBase]: 9087/13888 cut-off events. [2024-06-28 01:56:34,873 INFO L125 PetriNetUnfolderBase]: For 560444/560497 co-relation queries the response was YES. [2024-06-28 01:56:34,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110762 conditions, 13888 events. 9087/13888 cut-off events. For 560444/560497 co-relation queries the response was YES. Maximal size of possible extension queue 548. Compared 86615 event pairs, 2234 based on Foata normal form. 50/13659 useless extension candidates. Maximal degree in co-relation 110615. Up to 12275 conditions per place. [2024-06-28 01:56:35,037 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 659 selfloop transitions, 148 changer transitions 0/814 dead transitions. [2024-06-28 01:56:35,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 814 transitions, 15835 flow [2024-06-28 01:56:35,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:56:35,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:56:35,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 199 transitions. [2024-06-28 01:56:35,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4806763285024155 [2024-06-28 01:56:35,039 INFO L175 Difference]: Start difference. First operand has 305 places, 751 transitions, 13581 flow. Second operand 9 states and 199 transitions. [2024-06-28 01:56:35,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 814 transitions, 15835 flow [2024-06-28 01:56:36,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 814 transitions, 15675 flow, removed 42 selfloop flow, removed 3 redundant places. [2024-06-28 01:56:36,669 INFO L231 Difference]: Finished difference. Result has 313 places, 759 transitions, 14047 flow [2024-06-28 01:56:36,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=13421, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=751, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=607, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=14047, PETRI_PLACES=313, PETRI_TRANSITIONS=759} [2024-06-28 01:56:36,670 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 261 predicate places. [2024-06-28 01:56:36,670 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 759 transitions, 14047 flow [2024-06-28 01:56:36,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 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) [2024-06-28 01:56:36,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:56:36,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:56:36,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 01:56:36,671 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:56:36,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:56:36,671 INFO L85 PathProgramCache]: Analyzing trace with hash 547596435, now seen corresponding path program 3 times [2024-06-28 01:56:36,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:56:36,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340689695] [2024-06-28 01:56:36,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:56:36,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:56:36,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:56:37,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:56:37,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:56:37,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340689695] [2024-06-28 01:56:37,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340689695] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:56:37,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:56:37,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:56:37,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479270181] [2024-06-28 01:56:37,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:56:37,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:56:37,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:56:37,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:56:37,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:56:37,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:56:37,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 759 transitions, 14047 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 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) [2024-06-28 01:56:38,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:56:38,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:56:38,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:56:41,729 INFO L124 PetriNetUnfolderBase]: 9461/14329 cut-off events. [2024-06-28 01:56:41,730 INFO L125 PetriNetUnfolderBase]: For 590144/590189 co-relation queries the response was YES. [2024-06-28 01:56:41,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116202 conditions, 14329 events. 9461/14329 cut-off events. For 590144/590189 co-relation queries the response was YES. Maximal size of possible extension queue 573. Compared 89332 event pairs, 2648 based on Foata normal form. 42/14127 useless extension candidates. Maximal degree in co-relation 116052. Up to 12923 conditions per place. [2024-06-28 01:56:41,908 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 693 selfloop transitions, 165 changer transitions 0/865 dead transitions. [2024-06-28 01:56:41,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 865 transitions, 17045 flow [2024-06-28 01:56:41,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:56:41,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:56:41,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 225 transitions. [2024-06-28 01:56:41,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4891304347826087 [2024-06-28 01:56:41,910 INFO L175 Difference]: Start difference. First operand has 313 places, 759 transitions, 14047 flow. Second operand 10 states and 225 transitions. [2024-06-28 01:56:41,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 865 transitions, 17045 flow [2024-06-28 01:56:43,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 865 transitions, 16633 flow, removed 124 selfloop flow, removed 4 redundant places. [2024-06-28 01:56:43,961 INFO L231 Difference]: Finished difference. Result has 323 places, 804 transitions, 15033 flow [2024-06-28 01:56:43,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=13644, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=759, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=601, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=15033, PETRI_PLACES=323, PETRI_TRANSITIONS=804} [2024-06-28 01:56:43,963 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 271 predicate places. [2024-06-28 01:56:43,964 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 804 transitions, 15033 flow [2024-06-28 01:56:43,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 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) [2024-06-28 01:56:43,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:56:43,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:56:43,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 01:56:43,964 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:56:43,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:56:43,965 INFO L85 PathProgramCache]: Analyzing trace with hash 594825772, now seen corresponding path program 1 times [2024-06-28 01:56:43,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:56:43,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400099377] [2024-06-28 01:56:43,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:56:43,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:56:43,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:56:44,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:56:44,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:56:44,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400099377] [2024-06-28 01:56:44,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400099377] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:56:44,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:56:44,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:56:44,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021301809] [2024-06-28 01:56:44,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:56:44,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:56:44,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:56:44,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:56:44,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:56:45,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:56:45,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 804 transitions, 15033 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 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) [2024-06-28 01:56:45,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:56:45,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:56:45,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:56:49,159 INFO L124 PetriNetUnfolderBase]: 9806/14892 cut-off events. [2024-06-28 01:56:49,160 INFO L125 PetriNetUnfolderBase]: For 619801/619840 co-relation queries the response was YES. [2024-06-28 01:56:49,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121600 conditions, 14892 events. 9806/14892 cut-off events. For 619801/619840 co-relation queries the response was YES. Maximal size of possible extension queue 596. Compared 93558 event pairs, 2662 based on Foata normal form. 42/14675 useless extension candidates. Maximal degree in co-relation 121444. Up to 13211 conditions per place. [2024-06-28 01:56:49,351 INFO L140 encePairwiseOnDemand]: 30/46 looper letters, 707 selfloop transitions, 170 changer transitions 0/884 dead transitions. [2024-06-28 01:56:49,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 884 transitions, 17611 flow [2024-06-28 01:56:49,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:56:49,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:56:49,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 229 transitions. [2024-06-28 01:56:49,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49782608695652175 [2024-06-28 01:56:49,352 INFO L175 Difference]: Start difference. First operand has 323 places, 804 transitions, 15033 flow. Second operand 10 states and 229 transitions. [2024-06-28 01:56:49,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 884 transitions, 17611 flow [2024-06-28 01:56:51,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 884 transitions, 17257 flow, removed 48 selfloop flow, removed 5 redundant places. [2024-06-28 01:56:52,011 INFO L231 Difference]: Finished difference. Result has 331 places, 825 transitions, 15550 flow [2024-06-28 01:56:52,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=14685, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=804, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=635, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=15550, PETRI_PLACES=331, PETRI_TRANSITIONS=825} [2024-06-28 01:56:52,013 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 279 predicate places. [2024-06-28 01:56:52,013 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 825 transitions, 15550 flow [2024-06-28 01:56:52,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 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) [2024-06-28 01:56:52,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:56:52,013 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:56:52,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 01:56:52,014 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:56:52,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:56:52,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1685636088, now seen corresponding path program 1 times [2024-06-28 01:56:52,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:56:52,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780108683] [2024-06-28 01:56:52,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:56:52,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:56:52,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:56:52,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:56:52,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:56:52,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780108683] [2024-06-28 01:56:52,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780108683] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:56:52,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:56:52,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:56:52,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074676049] [2024-06-28 01:56:52,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:56:52,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:56:52,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:56:52,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:56:52,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:56:52,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:56:52,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 825 transitions, 15550 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:52,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:56:52,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:56:52,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand