./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe034_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_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-rel/safe034_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_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/safe034_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe034_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_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 [2024-06-27 22:54:37,556 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 22:54:37,596 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 22:54:37,599 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 22:54:37,599 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 22:54:37,614 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 22:54:37,614 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 22:54:37,615 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 22:54:37,615 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 22:54:37,615 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 22:54:37,616 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 22:54:37,616 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 22:54:37,617 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 22:54:37,617 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 22:54:37,617 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 22:54:37,617 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 22:54:37,618 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 22:54:37,618 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 22:54:37,618 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 22:54:37,619 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 22:54:37,619 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 22:54:37,619 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 22:54:37,619 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 22:54:37,620 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 22:54:37,620 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 22:54:37,620 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 22:54:37,620 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 22:54:37,621 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 22:54:37,621 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 22:54:37,621 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 22:54:37,621 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 22:54:37,622 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 22:54:37,622 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:54:37,622 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 22:54:37,622 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 22:54:37,623 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 22:54:37,623 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 22:54:37,623 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 22:54:37,623 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 22:54:37,624 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 22:54:37,624 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 22:54:37,624 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 22:54:37,624 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 22:54:37,625 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 22:54:37,813 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 22:54:37,835 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 22:54:37,837 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 22:54:37,838 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 22:54:37,839 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 22:54:37,840 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe034_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-27 22:54:38,932 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 22:54:39,173 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 22:54:39,175 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe034_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-27 22:54:39,195 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2af7d71e/576e818f3d324a0ab41f8acd939558ef/FLAG57629b67c [2024-06-27 22:54:39,209 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2af7d71e/576e818f3d324a0ab41f8acd939558ef [2024-06-27 22:54:39,211 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 22:54:39,212 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 22:54:39,212 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe034_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml [2024-06-27 22:54:39,285 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 22:54:39,286 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 22:54:39,289 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 22:54:39,289 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 22:54:39,293 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 22:54:39,293 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:54:39" (1/2) ... [2024-06-27 22:54:39,294 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72d3b18d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:54:39, skipping insertion in model container [2024-06-27 22:54:39,295 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:54:39" (1/2) ... [2024-06-27 22:54:39,296 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@46fe90ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:54:39, skipping insertion in model container [2024-06-27 22:54:39,296 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:54:39" (2/2) ... [2024-06-27 22:54:39,297 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72d3b18d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:54:39, skipping insertion in model container [2024-06-27 22:54:39,297 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:54:39" (2/2) ... [2024-06-27 22:54:39,298 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 22:54:39,322 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 22:54:39,324 INFO L97 edCorrectnessWitness]: Location invariant before [L833-L833] ! multithreaded || ((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y$mem_tmp >= 0LL) && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff0_thd3 >= 0LL) && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y) + (long long )y$r_buff0_thd3 >= 0LL) && (0LL - (long long )y) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$mem_tmp) + (long long )y$r_buff0_thd3 >= 0LL) && (0LL - (long long )y$mem_tmp) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff1 >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$mem_tmp >= 0LL) && (long long )y - (long long )y$mem_tmp >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$r_buff1_thd3 >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$w_buff1_used >= 0LL) && (long long )y$r_buff1_thd3 - (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff1_thd3 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0_used - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff1 - (long long )y$w_buff1_used >= 0LL) [2024-06-27 22:54:39,324 INFO L97 edCorrectnessWitness]: Location invariant before [L830-L830] ! multithreaded || ((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y$mem_tmp >= 0LL) && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff0_thd3 >= 0LL) && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y) + (long long )y$r_buff0_thd3 >= 0LL) && (0LL - (long long )y) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$mem_tmp) + (long long )y$r_buff0_thd3 >= 0LL) && (0LL - (long long )y$mem_tmp) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff1 >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$mem_tmp >= 0LL) && (long long )y - (long long )y$mem_tmp >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$r_buff1_thd3 >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$w_buff1_used >= 0LL) && (long long )y$r_buff1_thd3 - (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff1_thd3 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0_used - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff1 - (long long )y$w_buff1_used >= 0LL) [2024-06-27 22:54:39,324 INFO L97 edCorrectnessWitness]: Location invariant before [L832-L832] ! multithreaded || ((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y$mem_tmp >= 0LL) && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff0_thd3 >= 0LL) && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y) + (long long )y$r_buff0_thd3 >= 0LL) && (0LL - (long long )y) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$mem_tmp) + (long long )y$r_buff0_thd3 >= 0LL) && (0LL - (long long )y$mem_tmp) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff1 >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$mem_tmp >= 0LL) && (long long )y - (long long )y$mem_tmp >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$r_buff1_thd3 >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$w_buff1_used >= 0LL) && (long long )y$r_buff1_thd3 - (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff1_thd3 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0_used - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff1 - (long long )y$w_buff1_used >= 0LL) [2024-06-27 22:54:39,324 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 22:54:39,324 INFO L106 edCorrectnessWitness]: ghost_update [L828-L828] multithreaded = 1; [2024-06-27 22:54:39,359 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 22:54:39,481 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/safe034_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i[996,1009] [2024-06-27 22:54:39,649 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:54:39,656 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 22:54:39,690 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/safe034_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i[996,1009] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 22:54:39,801 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:54:39,842 INFO L206 MainTranslator]: Completed translation [2024-06-27 22:54:39,843 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:54:39 WrapperNode [2024-06-27 22:54:39,843 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 22:54:39,844 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 22:54:39,844 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 22:54:39,844 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 22:54:39,850 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:54:39" (1/1) ... [2024-06-27 22:54:39,875 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:54:39" (1/1) ... [2024-06-27 22:54:39,912 INFO L138 Inliner]: procedures = 175, calls = 46, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 121 [2024-06-27 22:54:39,913 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 22:54:39,913 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 22:54:39,913 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 22:54:39,914 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 22:54:39,922 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:54:39" (1/1) ... [2024-06-27 22:54:39,922 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:54:39" (1/1) ... [2024-06-27 22:54:39,926 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:54:39" (1/1) ... [2024-06-27 22:54:39,968 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]. [2024-06-27 22:54:39,968 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:54:39" (1/1) ... [2024-06-27 22:54:39,969 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:54:39" (1/1) ... [2024-06-27 22:54:39,974 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:54:39" (1/1) ... [2024-06-27 22:54:39,983 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:54:39" (1/1) ... [2024-06-27 22:54:39,985 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:54:39" (1/1) ... [2024-06-27 22:54:39,992 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:54:39" (1/1) ... [2024-06-27 22:54:39,995 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 22:54:40,000 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 22:54:40,001 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 22:54:40,001 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 22:54:40,002 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:54:39" (1/1) ... [2024-06-27 22:54:40,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:54:40,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 22:54:40,047 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) [2024-06-27 22:54:40,058 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 [2024-06-27 22:54:40,077 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 22:54:40,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 22:54:40,078 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 22:54:40,078 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 22:54:40,078 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 22:54:40,079 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 22:54:40,079 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 22:54:40,079 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 22:54:40,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 22:54:40,079 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 22:54:40,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 22:54:40,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 22:54:40,081 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 22:54:40,184 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 22:54:40,186 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 22:54:40,499 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 22:54:40,500 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 22:54:40,611 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 22:54:40,611 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 22:54:40,612 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:54:40 BoogieIcfgContainer [2024-06-27 22:54:40,612 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 22:54:40,613 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 22:54:40,613 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 22:54:40,616 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 22:54:40,616 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 10:54:39" (1/4) ... [2024-06-27 22:54:40,616 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@174959e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 10:54:40, skipping insertion in model container [2024-06-27 22:54:40,617 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:54:39" (2/4) ... [2024-06-27 22:54:40,617 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@174959e9 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 10:54:40, skipping insertion in model container [2024-06-27 22:54:40,617 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:54:39" (3/4) ... [2024-06-27 22:54:40,617 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@174959e9 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 10:54:40, skipping insertion in model container [2024-06-27 22:54:40,617 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:54:40" (4/4) ... [2024-06-27 22:54:40,618 INFO L112 eAbstractionObserver]: Analyzing ICFG safe034_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-27 22:54:40,631 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 22:54:40,631 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-27 22:54:40,631 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 22:54:40,664 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 22:54:40,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 48 transitions, 108 flow [2024-06-27 22:54:40,707 INFO L124 PetriNetUnfolderBase]: 1/45 cut-off events. [2024-06-27 22:54:40,707 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:54:40,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 45 events. 1/45 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 83 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2024-06-27 22:54:40,712 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 48 transitions, 108 flow [2024-06-27 22:54:40,714 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 45 transitions, 99 flow [2024-06-27 22:54:40,720 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 22:54:40,725 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;@797056a7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 22:54:40,725 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-27 22:54:40,728 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 22:54:40,728 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 22:54:40,728 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:54:40,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:54:40,729 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 22:54:40,729 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:54:40,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:54:40,769 INFO L85 PathProgramCache]: Analyzing trace with hash 343427402, now seen corresponding path program 1 times [2024-06-27 22:54:40,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:54:40,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714174230] [2024-06-27 22:54:40,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:54:40,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:54:40,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:54:41,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:54:41,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:54:41,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714174230] [2024-06-27 22:54:41,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714174230] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:54:41,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:54:41,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 22:54:41,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868829786] [2024-06-27 22:54:41,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:54:41,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 22:54:41,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:54:41,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 22:54:41,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 22:54:41,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 48 [2024-06-27 22:54:41,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 45 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:41,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:54:41,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 48 [2024-06-27 22:54:41,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:54:41,603 INFO L124 PetriNetUnfolderBase]: 537/1052 cut-off events. [2024-06-27 22:54:41,603 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-06-27 22:54:41,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1917 conditions, 1052 events. 537/1052 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 7041 event pairs, 418 based on Foata normal form. 40/983 useless extension candidates. Maximal degree in co-relation 1905. Up to 803 conditions per place. [2024-06-27 22:54:41,612 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 31 selfloop transitions, 3 changer transitions 0/54 dead transitions. [2024-06-27 22:54:41,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 54 transitions, 188 flow [2024-06-27 22:54:41,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 22:54:41,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 22:54:41,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 109 transitions. [2024-06-27 22:54:41,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7569444444444444 [2024-06-27 22:54:41,623 INFO L175 Difference]: Start difference. First operand has 54 places, 45 transitions, 99 flow. Second operand 3 states and 109 transitions. [2024-06-27 22:54:41,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 54 transitions, 188 flow [2024-06-27 22:54:41,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 54 transitions, 184 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 22:54:41,627 INFO L231 Difference]: Finished difference. Result has 53 places, 45 transitions, 115 flow [2024-06-27 22:54:41,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=115, PETRI_PLACES=53, PETRI_TRANSITIONS=45} [2024-06-27 22:54:41,631 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -1 predicate places. [2024-06-27 22:54:41,631 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 45 transitions, 115 flow [2024-06-27 22:54:41,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:41,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:54:41,632 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:54:41,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 22:54:41,632 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:54:41,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:54:41,633 INFO L85 PathProgramCache]: Analyzing trace with hash 477542781, now seen corresponding path program 1 times [2024-06-27 22:54:41,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:54:41,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644277218] [2024-06-27 22:54:41,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:54:41,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:54:41,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:54:42,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:54:42,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:54:42,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644277218] [2024-06-27 22:54:42,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644277218] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:54:42,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:54:42,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:54:42,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273970281] [2024-06-27 22:54:42,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:54:42,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:54:42,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:54:42,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:54:42,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:54:42,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 48 [2024-06-27 22:54:42,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 45 transitions, 115 flow. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:42,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:54:42,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 48 [2024-06-27 22:54:42,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:54:42,406 INFO L124 PetriNetUnfolderBase]: 984/1790 cut-off events. [2024-06-27 22:54:42,406 INFO L125 PetriNetUnfolderBase]: For 171/171 co-relation queries the response was YES. [2024-06-27 22:54:42,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3677 conditions, 1790 events. 984/1790 cut-off events. For 171/171 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 11538 event pairs, 328 based on Foata normal form. 9/1678 useless extension candidates. Maximal degree in co-relation 3664. Up to 1360 conditions per place. [2024-06-27 22:54:42,417 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 56 selfloop transitions, 11 changer transitions 0/84 dead transitions. [2024-06-27 22:54:42,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 84 transitions, 343 flow [2024-06-27 22:54:42,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:54:42,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:54:42,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2024-06-27 22:54:42,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6527777777777778 [2024-06-27 22:54:42,419 INFO L175 Difference]: Start difference. First operand has 53 places, 45 transitions, 115 flow. Second operand 6 states and 188 transitions. [2024-06-27 22:54:42,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 84 transitions, 343 flow [2024-06-27 22:54:42,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 84 transitions, 338 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 22:54:42,422 INFO L231 Difference]: Finished difference. Result has 61 places, 54 transitions, 193 flow [2024-06-27 22:54:42,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=193, PETRI_PLACES=61, PETRI_TRANSITIONS=54} [2024-06-27 22:54:42,423 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 7 predicate places. [2024-06-27 22:54:42,423 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 54 transitions, 193 flow [2024-06-27 22:54:42,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:42,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:54:42,423 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:54:42,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 22:54:42,424 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:54:42,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:54:42,424 INFO L85 PathProgramCache]: Analyzing trace with hash 186039427, now seen corresponding path program 1 times [2024-06-27 22:54:42,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:54:42,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006690095] [2024-06-27 22:54:42,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:54:42,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:54:42,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:54:42,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:54:42,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:54:42,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006690095] [2024-06-27 22:54:42,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006690095] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:54:42,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:54:42,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 22:54:42,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887299267] [2024-06-27 22:54:42,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:54:42,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 22:54:42,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:54:42,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 22:54:42,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 22:54:42,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 48 [2024-06-27 22:54:42,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 54 transitions, 193 flow. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:42,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:54:42,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 48 [2024-06-27 22:54:42,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:54:42,606 INFO L124 PetriNetUnfolderBase]: 483/1098 cut-off events. [2024-06-27 22:54:42,606 INFO L125 PetriNetUnfolderBase]: For 391/426 co-relation queries the response was YES. [2024-06-27 22:54:42,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2184 conditions, 1098 events. 483/1098 cut-off events. For 391/426 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 7565 event pairs, 178 based on Foata normal form. 21/1048 useless extension candidates. Maximal degree in co-relation 2165. Up to 616 conditions per place. [2024-06-27 22:54:42,613 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 26 selfloop transitions, 5 changer transitions 0/59 dead transitions. [2024-06-27 22:54:42,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 59 transitions, 252 flow [2024-06-27 22:54:42,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 22:54:42,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 22:54:42,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 109 transitions. [2024-06-27 22:54:42,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7569444444444444 [2024-06-27 22:54:42,615 INFO L175 Difference]: Start difference. First operand has 61 places, 54 transitions, 193 flow. Second operand 3 states and 109 transitions. [2024-06-27 22:54:42,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 59 transitions, 252 flow [2024-06-27 22:54:42,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 59 transitions, 250 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-06-27 22:54:42,617 INFO L231 Difference]: Finished difference. Result has 60 places, 51 transitions, 182 flow [2024-06-27 22:54:42,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=182, PETRI_PLACES=60, PETRI_TRANSITIONS=51} [2024-06-27 22:54:42,618 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 6 predicate places. [2024-06-27 22:54:42,618 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 51 transitions, 182 flow [2024-06-27 22:54:42,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:42,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:54:42,619 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:54:42,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 22:54:42,619 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:54:42,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:54:42,620 INFO L85 PathProgramCache]: Analyzing trace with hash 185599497, now seen corresponding path program 1 times [2024-06-27 22:54:42,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:54:42,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665381000] [2024-06-27 22:54:42,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:54:42,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:54:42,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:54:42,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:54:42,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:54:42,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665381000] [2024-06-27 22:54:42,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665381000] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:54:42,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:54:42,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 22:54:42,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131447052] [2024-06-27 22:54:42,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:54:42,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 22:54:42,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:54:42,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 22:54:42,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 22:54:42,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 48 [2024-06-27 22:54:42,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 51 transitions, 182 flow. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 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) [2024-06-27 22:54:42,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:54:42,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 48 [2024-06-27 22:54:42,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:54:43,132 INFO L124 PetriNetUnfolderBase]: 615/1310 cut-off events. [2024-06-27 22:54:43,132 INFO L125 PetriNetUnfolderBase]: For 678/680 co-relation queries the response was YES. [2024-06-27 22:54:43,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2817 conditions, 1310 events. 615/1310 cut-off events. For 678/680 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 8837 event pairs, 309 based on Foata normal form. 3/1246 useless extension candidates. Maximal degree in co-relation 2797. Up to 923 conditions per place. [2024-06-27 22:54:43,141 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 36 selfloop transitions, 9 changer transitions 0/68 dead transitions. [2024-06-27 22:54:43,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 68 transitions, 333 flow [2024-06-27 22:54:43,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 22:54:43,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 22:54:43,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 130 transitions. [2024-06-27 22:54:43,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6770833333333334 [2024-06-27 22:54:43,143 INFO L175 Difference]: Start difference. First operand has 60 places, 51 transitions, 182 flow. Second operand 4 states and 130 transitions. [2024-06-27 22:54:43,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 68 transitions, 333 flow [2024-06-27 22:54:43,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 68 transitions, 319 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 22:54:43,145 INFO L231 Difference]: Finished difference. Result has 63 places, 59 transitions, 254 flow [2024-06-27 22:54:43,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=254, PETRI_PLACES=63, PETRI_TRANSITIONS=59} [2024-06-27 22:54:43,146 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 9 predicate places. [2024-06-27 22:54:43,146 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 59 transitions, 254 flow [2024-06-27 22:54:43,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 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) [2024-06-27 22:54:43,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:54:43,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:54:43,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 22:54:43,147 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:54:43,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:54:43,148 INFO L85 PathProgramCache]: Analyzing trace with hash 480757887, now seen corresponding path program 1 times [2024-06-27 22:54:43,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:54:43,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621381902] [2024-06-27 22:54:43,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:54:43,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:54:43,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:54:43,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:54:43,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:54:43,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621381902] [2024-06-27 22:54:43,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621381902] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:54:43,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:54:43,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:54:43,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882354447] [2024-06-27 22:54:43,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:54:43,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:54:43,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:54:43,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:54:43,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:54:43,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 48 [2024-06-27 22:54:43,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 59 transitions, 254 flow. Second operand has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:43,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:54:43,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 48 [2024-06-27 22:54:43,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:54:43,899 INFO L124 PetriNetUnfolderBase]: 974/1953 cut-off events. [2024-06-27 22:54:43,899 INFO L125 PetriNetUnfolderBase]: For 1415/1419 co-relation queries the response was YES. [2024-06-27 22:54:43,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4707 conditions, 1953 events. 974/1953 cut-off events. For 1415/1419 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 13758 event pairs, 313 based on Foata normal form. 14/1879 useless extension candidates. Maximal degree in co-relation 4684. Up to 1245 conditions per place. [2024-06-27 22:54:43,911 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 58 selfloop transitions, 18 changer transitions 4/97 dead transitions. [2024-06-27 22:54:43,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 97 transitions, 534 flow [2024-06-27 22:54:43,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:54:43,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:54:43,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 208 transitions. [2024-06-27 22:54:43,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6190476190476191 [2024-06-27 22:54:43,913 INFO L175 Difference]: Start difference. First operand has 63 places, 59 transitions, 254 flow. Second operand 7 states and 208 transitions. [2024-06-27 22:54:43,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 97 transitions, 534 flow [2024-06-27 22:54:43,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 97 transitions, 532 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-06-27 22:54:43,919 INFO L231 Difference]: Finished difference. Result has 70 places, 63 transitions, 336 flow [2024-06-27 22:54:43,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=336, PETRI_PLACES=70, PETRI_TRANSITIONS=63} [2024-06-27 22:54:43,920 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 16 predicate places. [2024-06-27 22:54:43,920 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 63 transitions, 336 flow [2024-06-27 22:54:43,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:43,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:54:43,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:54:43,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 22:54:43,921 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:54:43,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:54:43,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1407094307, now seen corresponding path program 2 times [2024-06-27 22:54:43,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:54:43,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356496651] [2024-06-27 22:54:43,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:54:43,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:54:43,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:54:44,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:54:44,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:54:44,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356496651] [2024-06-27 22:54:44,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356496651] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:54:44,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:54:44,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:54:44,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018816592] [2024-06-27 22:54:44,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:54:44,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:54:44,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:54:44,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:54:44,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:54:44,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 48 [2024-06-27 22:54:44,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 63 transitions, 336 flow. Second operand has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:44,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:54:44,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 48 [2024-06-27 22:54:44,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:54:44,663 INFO L124 PetriNetUnfolderBase]: 945/1878 cut-off events. [2024-06-27 22:54:44,663 INFO L125 PetriNetUnfolderBase]: For 2205/2209 co-relation queries the response was YES. [2024-06-27 22:54:44,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4851 conditions, 1878 events. 945/1878 cut-off events. For 2205/2209 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 13229 event pairs, 75 based on Foata normal form. 14/1846 useless extension candidates. Maximal degree in co-relation 4824. Up to 893 conditions per place. [2024-06-27 22:54:44,674 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 55 selfloop transitions, 21 changer transitions 0/93 dead transitions. [2024-06-27 22:54:44,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 93 transitions, 570 flow [2024-06-27 22:54:44,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:54:44,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:54:44,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 182 transitions. [2024-06-27 22:54:44,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6319444444444444 [2024-06-27 22:54:44,676 INFO L175 Difference]: Start difference. First operand has 70 places, 63 transitions, 336 flow. Second operand 6 states and 182 transitions. [2024-06-27 22:54:44,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 93 transitions, 570 flow [2024-06-27 22:54:44,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 93 transitions, 528 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-27 22:54:44,682 INFO L231 Difference]: Finished difference. Result has 71 places, 64 transitions, 352 flow [2024-06-27 22:54:44,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=352, PETRI_PLACES=71, PETRI_TRANSITIONS=64} [2024-06-27 22:54:44,685 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 17 predicate places. [2024-06-27 22:54:44,685 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 64 transitions, 352 flow [2024-06-27 22:54:44,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:44,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:54:44,686 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:54:44,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 22:54:44,686 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:54:44,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:54:44,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1857610043, now seen corresponding path program 3 times [2024-06-27 22:54:44,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:54:44,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303166543] [2024-06-27 22:54:44,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:54:44,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:54:44,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:54:45,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:54:45,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:54:45,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303166543] [2024-06-27 22:54:45,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303166543] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:54:45,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:54:45,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:54:45,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819050881] [2024-06-27 22:54:45,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:54:45,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:54:45,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:54:45,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:54:45,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:54:45,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 48 [2024-06-27 22:54:45,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 64 transitions, 352 flow. Second operand has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:45,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:54:45,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 48 [2024-06-27 22:54:45,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:54:45,374 INFO L124 PetriNetUnfolderBase]: 925/1844 cut-off events. [2024-06-27 22:54:45,374 INFO L125 PetriNetUnfolderBase]: For 2450/2454 co-relation queries the response was YES. [2024-06-27 22:54:45,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4831 conditions, 1844 events. 925/1844 cut-off events. For 2450/2454 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 12937 event pairs, 76 based on Foata normal form. 14/1817 useless extension candidates. Maximal degree in co-relation 4803. Up to 1025 conditions per place. [2024-06-27 22:54:45,387 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 46 selfloop transitions, 20 changer transitions 0/83 dead transitions. [2024-06-27 22:54:45,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 83 transitions, 520 flow [2024-06-27 22:54:45,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:54:45,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:54:45,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 172 transitions. [2024-06-27 22:54:45,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5972222222222222 [2024-06-27 22:54:45,388 INFO L175 Difference]: Start difference. First operand has 71 places, 64 transitions, 352 flow. Second operand 6 states and 172 transitions. [2024-06-27 22:54:45,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 83 transitions, 520 flow [2024-06-27 22:54:45,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 83 transitions, 486 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-27 22:54:45,393 INFO L231 Difference]: Finished difference. Result has 73 places, 63 transitions, 360 flow [2024-06-27 22:54:45,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=360, PETRI_PLACES=73, PETRI_TRANSITIONS=63} [2024-06-27 22:54:45,394 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 19 predicate places. [2024-06-27 22:54:45,394 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 63 transitions, 360 flow [2024-06-27 22:54:45,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:45,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:54:45,395 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:54:45,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 22:54:45,395 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:54:45,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:54:45,396 INFO L85 PathProgramCache]: Analyzing trace with hash -2034164216, now seen corresponding path program 1 times [2024-06-27 22:54:45,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:54:45,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728239647] [2024-06-27 22:54:45,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:54:45,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:54:45,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:54:45,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:54:45,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:54:45,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728239647] [2024-06-27 22:54:45,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728239647] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:54:45,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:54:45,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:54:45,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735826290] [2024-06-27 22:54:45,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:54:45,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:54:45,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:54:45,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:54:45,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:54:45,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2024-06-27 22:54:45,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 63 transitions, 360 flow. Second operand has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:45,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:54:45,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2024-06-27 22:54:45,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:54:45,872 INFO L124 PetriNetUnfolderBase]: 799/1699 cut-off events. [2024-06-27 22:54:45,872 INFO L125 PetriNetUnfolderBase]: For 2543/2547 co-relation queries the response was YES. [2024-06-27 22:54:45,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4415 conditions, 1699 events. 799/1699 cut-off events. For 2543/2547 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 12132 event pairs, 370 based on Foata normal form. 1/1610 useless extension candidates. Maximal degree in co-relation 4386. Up to 1210 conditions per place. [2024-06-27 22:54:45,883 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 54 selfloop transitions, 14 changer transitions 0/87 dead transitions. [2024-06-27 22:54:45,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 87 transitions, 582 flow [2024-06-27 22:54:45,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:54:45,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:54:45,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 159 transitions. [2024-06-27 22:54:45,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6625 [2024-06-27 22:54:45,885 INFO L175 Difference]: Start difference. First operand has 73 places, 63 transitions, 360 flow. Second operand 5 states and 159 transitions. [2024-06-27 22:54:45,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 87 transitions, 582 flow [2024-06-27 22:54:45,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 87 transitions, 536 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-06-27 22:54:45,890 INFO L231 Difference]: Finished difference. Result has 75 places, 73 transitions, 428 flow [2024-06-27 22:54:45,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=428, PETRI_PLACES=75, PETRI_TRANSITIONS=73} [2024-06-27 22:54:45,891 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 21 predicate places. [2024-06-27 22:54:45,891 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 73 transitions, 428 flow [2024-06-27 22:54:45,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:45,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:54:45,892 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:54:45,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 22:54:45,892 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:54:45,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:54:45,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1611883766, now seen corresponding path program 2 times [2024-06-27 22:54:45,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:54:45,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190606323] [2024-06-27 22:54:45,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:54:45,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:54:45,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:54:46,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:54:46,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:54:46,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190606323] [2024-06-27 22:54:46,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190606323] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:54:46,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:54:46,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:54:46,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304164478] [2024-06-27 22:54:46,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:54:46,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:54:46,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:54:46,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:54:46,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:54:46,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2024-06-27 22:54:46,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 73 transitions, 428 flow. Second operand has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:46,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:54:46,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2024-06-27 22:54:46,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:54:46,355 INFO L124 PetriNetUnfolderBase]: 796/1700 cut-off events. [2024-06-27 22:54:46,355 INFO L125 PetriNetUnfolderBase]: For 2530/2534 co-relation queries the response was YES. [2024-06-27 22:54:46,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4650 conditions, 1700 events. 796/1700 cut-off events. For 2530/2534 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 12153 event pairs, 375 based on Foata normal form. 1/1608 useless extension candidates. Maximal degree in co-relation 4619. Up to 1196 conditions per place. [2024-06-27 22:54:46,366 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 52 selfloop transitions, 21 changer transitions 0/92 dead transitions. [2024-06-27 22:54:46,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 92 transitions, 643 flow [2024-06-27 22:54:46,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:54:46,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:54:46,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 158 transitions. [2024-06-27 22:54:46,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6583333333333333 [2024-06-27 22:54:46,368 INFO L175 Difference]: Start difference. First operand has 75 places, 73 transitions, 428 flow. Second operand 5 states and 158 transitions. [2024-06-27 22:54:46,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 92 transitions, 643 flow [2024-06-27 22:54:46,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 92 transitions, 635 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-06-27 22:54:46,373 INFO L231 Difference]: Finished difference. Result has 81 places, 81 transitions, 536 flow [2024-06-27 22:54:46,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=536, PETRI_PLACES=81, PETRI_TRANSITIONS=81} [2024-06-27 22:54:46,374 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 27 predicate places. [2024-06-27 22:54:46,374 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 81 transitions, 536 flow [2024-06-27 22:54:46,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:46,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:54:46,374 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:54:46,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 22:54:46,375 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:54:46,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:54:46,375 INFO L85 PathProgramCache]: Analyzing trace with hash -2027458296, now seen corresponding path program 1 times [2024-06-27 22:54:46,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:54:46,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918972874] [2024-06-27 22:54:46,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:54:46,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:54:46,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:54:46,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:54:46,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:54:46,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918972874] [2024-06-27 22:54:46,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918972874] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:54:46,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:54:46,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:54:46,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191303287] [2024-06-27 22:54:46,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:54:46,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:54:46,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:54:46,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:54:46,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:54:46,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 48 [2024-06-27 22:54:46,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 81 transitions, 536 flow. Second operand has 5 states, 5 states have (on average 25.4) internal successors, (127), 5 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:46,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:54:46,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 48 [2024-06-27 22:54:46,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:54:47,018 INFO L124 PetriNetUnfolderBase]: 755/1677 cut-off events. [2024-06-27 22:54:47,018 INFO L125 PetriNetUnfolderBase]: For 2994/3002 co-relation queries the response was YES. [2024-06-27 22:54:47,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4732 conditions, 1677 events. 755/1677 cut-off events. For 2994/3002 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 12136 event pairs, 231 based on Foata normal form. 12/1597 useless extension candidates. Maximal degree in co-relation 4697. Up to 976 conditions per place. [2024-06-27 22:54:47,029 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 51 selfloop transitions, 22 changer transitions 0/101 dead transitions. [2024-06-27 22:54:47,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 101 transitions, 744 flow [2024-06-27 22:54:47,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:54:47,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:54:47,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 160 transitions. [2024-06-27 22:54:47,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-06-27 22:54:47,031 INFO L175 Difference]: Start difference. First operand has 81 places, 81 transitions, 536 flow. Second operand 5 states and 160 transitions. [2024-06-27 22:54:47,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 101 transitions, 744 flow [2024-06-27 22:54:47,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 101 transitions, 719 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-06-27 22:54:47,037 INFO L231 Difference]: Finished difference. Result has 86 places, 84 transitions, 599 flow [2024-06-27 22:54:47,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=511, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=599, PETRI_PLACES=86, PETRI_TRANSITIONS=84} [2024-06-27 22:54:47,038 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 32 predicate places. [2024-06-27 22:54:47,038 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 84 transitions, 599 flow [2024-06-27 22:54:47,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 5 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:47,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:54:47,038 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:54:47,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 22:54:47,038 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:54:47,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:54:47,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1493696379, now seen corresponding path program 1 times [2024-06-27 22:54:47,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:54:47,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959620644] [2024-06-27 22:54:47,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:54:47,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:54:47,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:54:47,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:54:47,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:54:47,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959620644] [2024-06-27 22:54:47,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959620644] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:54:47,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:54:47,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:54:47,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290398381] [2024-06-27 22:54:47,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:54:47,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:54:47,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:54:47,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:54:47,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:54:47,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 48 [2024-06-27 22:54:47,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 84 transitions, 599 flow. Second operand has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:47,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:54:47,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 48 [2024-06-27 22:54:47,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:54:47,949 INFO L124 PetriNetUnfolderBase]: 990/2036 cut-off events. [2024-06-27 22:54:47,949 INFO L125 PetriNetUnfolderBase]: For 4880/4884 co-relation queries the response was YES. [2024-06-27 22:54:47,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6402 conditions, 2036 events. 990/2036 cut-off events. For 4880/4884 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 14630 event pairs, 389 based on Foata normal form. 4/1952 useless extension candidates. Maximal degree in co-relation 6363. Up to 1423 conditions per place. [2024-06-27 22:54:47,967 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 82 selfloop transitions, 22 changer transitions 0/121 dead transitions. [2024-06-27 22:54:47,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 121 transitions, 935 flow [2024-06-27 22:54:47,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:54:47,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:54:47,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 210 transitions. [2024-06-27 22:54:47,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-06-27 22:54:47,970 INFO L175 Difference]: Start difference. First operand has 86 places, 84 transitions, 599 flow. Second operand 7 states and 210 transitions. [2024-06-27 22:54:47,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 121 transitions, 935 flow [2024-06-27 22:54:47,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 121 transitions, 914 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-06-27 22:54:47,979 INFO L231 Difference]: Finished difference. Result has 93 places, 91 transitions, 705 flow [2024-06-27 22:54:47,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=578, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=705, PETRI_PLACES=93, PETRI_TRANSITIONS=91} [2024-06-27 22:54:47,980 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 39 predicate places. [2024-06-27 22:54:47,980 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 91 transitions, 705 flow [2024-06-27 22:54:47,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:47,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:54:47,981 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:54:47,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 22:54:47,981 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:54:47,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:54:47,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1488905019, now seen corresponding path program 2 times [2024-06-27 22:54:47,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:54:47,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186077801] [2024-06-27 22:54:47,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:54:47,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:54:48,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:54:48,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:54:48,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:54:48,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186077801] [2024-06-27 22:54:48,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186077801] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:54:48,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:54:48,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:54:48,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648963373] [2024-06-27 22:54:48,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:54:48,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:54:48,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:54:48,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:54:48,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:54:48,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2024-06-27 22:54:48,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 91 transitions, 705 flow. Second operand has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 6 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:48,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:54:48,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2024-06-27 22:54:48,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:54:48,818 INFO L124 PetriNetUnfolderBase]: 862/1816 cut-off events. [2024-06-27 22:54:48,818 INFO L125 PetriNetUnfolderBase]: For 5445/5449 co-relation queries the response was YES. [2024-06-27 22:54:48,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6112 conditions, 1816 events. 862/1816 cut-off events. For 5445/5449 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 12889 event pairs, 401 based on Foata normal form. 2/1734 useless extension candidates. Maximal degree in co-relation 6070. Up to 1259 conditions per place. [2024-06-27 22:54:48,831 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 76 selfloop transitions, 22 changer transitions 0/117 dead transitions. [2024-06-27 22:54:48,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 117 transitions, 1026 flow [2024-06-27 22:54:48,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:54:48,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:54:48,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 189 transitions. [2024-06-27 22:54:48,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.65625 [2024-06-27 22:54:48,832 INFO L175 Difference]: Start difference. First operand has 93 places, 91 transitions, 705 flow. Second operand 6 states and 189 transitions. [2024-06-27 22:54:48,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 117 transitions, 1026 flow [2024-06-27 22:54:48,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 117 transitions, 958 flow, removed 23 selfloop flow, removed 3 redundant places. [2024-06-27 22:54:48,843 INFO L231 Difference]: Finished difference. Result has 98 places, 98 transitions, 798 flow [2024-06-27 22:54:48,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=657, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=798, PETRI_PLACES=98, PETRI_TRANSITIONS=98} [2024-06-27 22:54:48,843 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 44 predicate places. [2024-06-27 22:54:48,844 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 98 transitions, 798 flow [2024-06-27 22:54:48,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 6 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:48,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:54:48,844 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:54:48,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 22:54:48,844 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:54:48,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:54:48,844 INFO L85 PathProgramCache]: Analyzing trace with hash -621640377, now seen corresponding path program 1 times [2024-06-27 22:54:48,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:54:48,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994950738] [2024-06-27 22:54:48,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:54:48,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:54:48,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:54:49,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:54:49,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:54:49,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994950738] [2024-06-27 22:54:49,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994950738] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:54:49,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:54:49,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:54:49,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049895092] [2024-06-27 22:54:49,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:54:49,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:54:49,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:54:49,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:54:49,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:54:49,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2024-06-27 22:54:49,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 98 transitions, 798 flow. Second operand has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 6 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:49,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:54:49,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2024-06-27 22:54:49,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:54:49,631 INFO L124 PetriNetUnfolderBase]: 885/1858 cut-off events. [2024-06-27 22:54:49,631 INFO L125 PetriNetUnfolderBase]: For 6318/6322 co-relation queries the response was YES. [2024-06-27 22:54:49,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6536 conditions, 1858 events. 885/1858 cut-off events. For 6318/6322 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 13248 event pairs, 378 based on Foata normal form. 2/1769 useless extension candidates. Maximal degree in co-relation 6491. Up to 1321 conditions per place. [2024-06-27 22:54:49,645 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 84 selfloop transitions, 16 changer transitions 0/119 dead transitions. [2024-06-27 22:54:49,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 119 transitions, 1072 flow [2024-06-27 22:54:49,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:54:49,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:54:49,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2024-06-27 22:54:49,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6527777777777778 [2024-06-27 22:54:49,649 INFO L175 Difference]: Start difference. First operand has 98 places, 98 transitions, 798 flow. Second operand 6 states and 188 transitions. [2024-06-27 22:54:49,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 119 transitions, 1072 flow [2024-06-27 22:54:49,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 119 transitions, 1020 flow, removed 14 selfloop flow, removed 2 redundant places. [2024-06-27 22:54:49,662 INFO L231 Difference]: Finished difference. Result has 102 places, 100 transitions, 807 flow [2024-06-27 22:54:49,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=746, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=807, PETRI_PLACES=102, PETRI_TRANSITIONS=100} [2024-06-27 22:54:49,664 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 48 predicate places. [2024-06-27 22:54:49,664 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 100 transitions, 807 flow [2024-06-27 22:54:49,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 6 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:49,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:54:49,665 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:54:49,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 22:54:49,665 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:54:49,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:54:49,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1518240391, now seen corresponding path program 3 times [2024-06-27 22:54:49,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:54:49,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124951322] [2024-06-27 22:54:49,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:54:49,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:54:49,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:54:50,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:54:50,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:54:50,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124951322] [2024-06-27 22:54:50,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124951322] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:54:50,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:54:50,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:54:50,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621940960] [2024-06-27 22:54:50,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:54:50,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:54:50,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:54:50,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:54:50,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:54:50,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2024-06-27 22:54:50,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 100 transitions, 807 flow. Second operand has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 6 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:50,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:54:50,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2024-06-27 22:54:50,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:54:50,488 INFO L124 PetriNetUnfolderBase]: 880/1853 cut-off events. [2024-06-27 22:54:50,489 INFO L125 PetriNetUnfolderBase]: For 7338/7342 co-relation queries the response was YES. [2024-06-27 22:54:50,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6623 conditions, 1853 events. 880/1853 cut-off events. For 7338/7342 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 13311 event pairs, 375 based on Foata normal form. 2/1762 useless extension candidates. Maximal degree in co-relation 6577. Up to 1265 conditions per place. [2024-06-27 22:54:50,503 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 69 selfloop transitions, 31 changer transitions 0/119 dead transitions. [2024-06-27 22:54:50,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 119 transitions, 1083 flow [2024-06-27 22:54:50,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:54:50,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:54:50,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2024-06-27 22:54:50,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6527777777777778 [2024-06-27 22:54:50,505 INFO L175 Difference]: Start difference. First operand has 102 places, 100 transitions, 807 flow. Second operand 6 states and 188 transitions. [2024-06-27 22:54:50,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 119 transitions, 1083 flow [2024-06-27 22:54:50,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 119 transitions, 1044 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-27 22:54:50,519 INFO L231 Difference]: Finished difference. Result has 104 places, 103 transitions, 882 flow [2024-06-27 22:54:50,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=768, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=882, PETRI_PLACES=104, PETRI_TRANSITIONS=103} [2024-06-27 22:54:50,519 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 50 predicate places. [2024-06-27 22:54:50,520 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 103 transitions, 882 flow [2024-06-27 22:54:50,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 6 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:50,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:54:50,520 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:54:50,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 22:54:50,520 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:54:50,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:54:50,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1518248327, now seen corresponding path program 2 times [2024-06-27 22:54:50,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:54:50,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604759011] [2024-06-27 22:54:50,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:54:50,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:54:50,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:54:51,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:54:51,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:54:51,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604759011] [2024-06-27 22:54:51,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604759011] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:54:51,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:54:51,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:54:51,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114920253] [2024-06-27 22:54:51,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:54:51,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:54:51,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:54:51,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:54:51,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:54:51,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2024-06-27 22:54:51,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 103 transitions, 882 flow. Second operand has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 6 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:51,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:54:51,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2024-06-27 22:54:51,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:54:51,327 INFO L124 PetriNetUnfolderBase]: 903/1906 cut-off events. [2024-06-27 22:54:51,327 INFO L125 PetriNetUnfolderBase]: For 8647/8651 co-relation queries the response was YES. [2024-06-27 22:54:51,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7028 conditions, 1906 events. 903/1906 cut-off events. For 8647/8651 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 13749 event pairs, 387 based on Foata normal form. 2/1811 useless extension candidates. Maximal degree in co-relation 6981. Up to 1337 conditions per place. [2024-06-27 22:54:51,339 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 79 selfloop transitions, 23 changer transitions 0/121 dead transitions. [2024-06-27 22:54:51,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 121 transitions, 1160 flow [2024-06-27 22:54:51,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:54:51,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:54:51,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 187 transitions. [2024-06-27 22:54:51,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6493055555555556 [2024-06-27 22:54:51,341 INFO L175 Difference]: Start difference. First operand has 104 places, 103 transitions, 882 flow. Second operand 6 states and 187 transitions. [2024-06-27 22:54:51,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 121 transitions, 1160 flow [2024-06-27 22:54:51,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 121 transitions, 1068 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-06-27 22:54:51,354 INFO L231 Difference]: Finished difference. Result has 106 places, 105 transitions, 871 flow [2024-06-27 22:54:51,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=790, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=871, PETRI_PLACES=106, PETRI_TRANSITIONS=105} [2024-06-27 22:54:51,355 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 52 predicate places. [2024-06-27 22:54:51,355 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 105 transitions, 871 flow [2024-06-27 22:54:51,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 6 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:51,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:54:51,356 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:54:51,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 22:54:51,356 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:54:51,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:54:51,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1527771527, now seen corresponding path program 3 times [2024-06-27 22:54:51,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:54:51,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351657520] [2024-06-27 22:54:51,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:54:51,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:54:51,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:54:51,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:54:51,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:54:51,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351657520] [2024-06-27 22:54:51,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351657520] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:54:51,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:54:51,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:54:51,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710719712] [2024-06-27 22:54:51,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:54:51,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:54:51,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:54:51,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:54:51,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:54:51,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2024-06-27 22:54:51,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 105 transitions, 871 flow. Second operand has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 6 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:51,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:54:51,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2024-06-27 22:54:51,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:54:52,109 INFO L124 PetriNetUnfolderBase]: 919/1938 cut-off events. [2024-06-27 22:54:52,109 INFO L125 PetriNetUnfolderBase]: For 9718/9722 co-relation queries the response was YES. [2024-06-27 22:54:52,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7267 conditions, 1938 events. 919/1938 cut-off events. For 9718/9722 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 14017 event pairs, 379 based on Foata normal form. 2/1843 useless extension candidates. Maximal degree in co-relation 7219. Up to 1284 conditions per place. [2024-06-27 22:54:52,122 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 83 selfloop transitions, 36 changer transitions 0/138 dead transitions. [2024-06-27 22:54:52,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 138 transitions, 1331 flow [2024-06-27 22:54:52,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:54:52,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:54:52,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 191 transitions. [2024-06-27 22:54:52,124 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6631944444444444 [2024-06-27 22:54:52,124 INFO L175 Difference]: Start difference. First operand has 106 places, 105 transitions, 871 flow. Second operand 6 states and 191 transitions. [2024-06-27 22:54:52,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 138 transitions, 1331 flow [2024-06-27 22:54:52,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 138 transitions, 1274 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-27 22:54:52,138 INFO L231 Difference]: Finished difference. Result has 111 places, 116 transitions, 1093 flow [2024-06-27 22:54:52,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=814, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1093, PETRI_PLACES=111, PETRI_TRANSITIONS=116} [2024-06-27 22:54:52,140 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 57 predicate places. [2024-06-27 22:54:52,141 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 116 transitions, 1093 flow [2024-06-27 22:54:52,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 6 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:52,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:54:52,141 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:54:52,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 22:54:52,142 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:54:52,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:54:52,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1942834868, now seen corresponding path program 1 times [2024-06-27 22:54:52,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:54:52,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746696191] [2024-06-27 22:54:52,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:54:52,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:54:52,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:54:52,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:54:52,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:54:52,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746696191] [2024-06-27 22:54:52,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746696191] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:54:52,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:54:52,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:54:52,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920827818] [2024-06-27 22:54:52,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:54:52,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 22:54:52,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:54:52,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 22:54:52,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 22:54:52,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 48 [2024-06-27 22:54:52,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 116 transitions, 1093 flow. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 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) [2024-06-27 22:54:52,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:54:52,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 48 [2024-06-27 22:54:52,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:54:52,784 INFO L124 PetriNetUnfolderBase]: 1704/3188 cut-off events. [2024-06-27 22:54:52,785 INFO L125 PetriNetUnfolderBase]: For 12551/12822 co-relation queries the response was YES. [2024-06-27 22:54:52,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10376 conditions, 3188 events. 1704/3188 cut-off events. For 12551/12822 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 21609 event pairs, 213 based on Foata normal form. 202/3220 useless extension candidates. Maximal degree in co-relation 10324. Up to 1285 conditions per place. [2024-06-27 22:54:52,803 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 95 selfloop transitions, 5 changer transitions 0/143 dead transitions. [2024-06-27 22:54:52,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 143 transitions, 1380 flow [2024-06-27 22:54:52,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 22:54:52,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 22:54:52,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 139 transitions. [2024-06-27 22:54:52,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7239583333333334 [2024-06-27 22:54:52,821 INFO L175 Difference]: Start difference. First operand has 111 places, 116 transitions, 1093 flow. Second operand 4 states and 139 transitions. [2024-06-27 22:54:52,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 143 transitions, 1380 flow [2024-06-27 22:54:52,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 143 transitions, 1254 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-27 22:54:52,853 INFO L231 Difference]: Finished difference. Result has 107 places, 100 transitions, 769 flow [2024-06-27 22:54:52,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=731, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=769, PETRI_PLACES=107, PETRI_TRANSITIONS=100} [2024-06-27 22:54:52,854 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 53 predicate places. [2024-06-27 22:54:52,854 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 100 transitions, 769 flow [2024-06-27 22:54:52,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 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) [2024-06-27 22:54:52,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:54:52,855 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:54:52,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 22:54:52,855 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:54:52,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:54:52,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1726956082, now seen corresponding path program 1 times [2024-06-27 22:54:52,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:54:52,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554951815] [2024-06-27 22:54:52,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:54:52,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:54:52,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:54:53,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:54:53,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:54:53,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554951815] [2024-06-27 22:54:53,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554951815] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:54:53,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:54:53,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:54:53,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438510447] [2024-06-27 22:54:53,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:54:53,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:54:53,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:54:53,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:54:53,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:54:53,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2024-06-27 22:54:53,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 100 transitions, 769 flow. Second operand has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 6 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:53,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:54:53,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2024-06-27 22:54:53,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:54:53,514 INFO L124 PetriNetUnfolderBase]: 1198/2485 cut-off events. [2024-06-27 22:54:53,515 INFO L125 PetriNetUnfolderBase]: For 12471/12524 co-relation queries the response was YES. [2024-06-27 22:54:53,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9294 conditions, 2485 events. 1198/2485 cut-off events. For 12471/12524 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 18296 event pairs, 349 based on Foata normal form. 9/2312 useless extension candidates. Maximal degree in co-relation 9245. Up to 1618 conditions per place. [2024-06-27 22:54:53,535 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 78 selfloop transitions, 21 changer transitions 0/122 dead transitions. [2024-06-27 22:54:53,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 122 transitions, 1101 flow [2024-06-27 22:54:53,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:54:53,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:54:53,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 159 transitions. [2024-06-27 22:54:53,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6625 [2024-06-27 22:54:53,537 INFO L175 Difference]: Start difference. First operand has 107 places, 100 transitions, 769 flow. Second operand 5 states and 159 transitions. [2024-06-27 22:54:53,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 122 transitions, 1101 flow [2024-06-27 22:54:53,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 122 transitions, 1099 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 22:54:53,556 INFO L231 Difference]: Finished difference. Result has 112 places, 107 transitions, 928 flow [2024-06-27 22:54:53,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=767, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=928, PETRI_PLACES=112, PETRI_TRANSITIONS=107} [2024-06-27 22:54:53,556 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 58 predicate places. [2024-06-27 22:54:53,556 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 107 transitions, 928 flow [2024-06-27 22:54:53,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 6 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:53,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:54:53,557 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:54:53,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 22:54:53,557 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:54:53,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:54:53,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1495324342, now seen corresponding path program 2 times [2024-06-27 22:54:53,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:54:53,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540175026] [2024-06-27 22:54:53,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:54:53,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:54:53,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:54:53,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:54:53,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:54:53,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540175026] [2024-06-27 22:54:53,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540175026] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:54:53,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:54:53,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:54:53,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711466630] [2024-06-27 22:54:53,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:54:53,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:54:53,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:54:53,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:54:53,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:54:53,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2024-06-27 22:54:53,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 107 transitions, 928 flow. Second operand has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 6 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:53,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:54:53,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2024-06-27 22:54:53,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:54:54,215 INFO L124 PetriNetUnfolderBase]: 1244/2634 cut-off events. [2024-06-27 22:54:54,215 INFO L125 PetriNetUnfolderBase]: For 15956/16010 co-relation queries the response was YES. [2024-06-27 22:54:54,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10274 conditions, 2634 events. 1244/2634 cut-off events. For 15956/16010 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 19523 event pairs, 367 based on Foata normal form. 10/2444 useless extension candidates. Maximal degree in co-relation 10222. Up to 1651 conditions per place. [2024-06-27 22:54:54,236 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 75 selfloop transitions, 33 changer transitions 0/131 dead transitions. [2024-06-27 22:54:54,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 131 transitions, 1283 flow [2024-06-27 22:54:54,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:54:54,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:54:54,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 189 transitions. [2024-06-27 22:54:54,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.65625 [2024-06-27 22:54:54,238 INFO L175 Difference]: Start difference. First operand has 112 places, 107 transitions, 928 flow. Second operand 6 states and 189 transitions. [2024-06-27 22:54:54,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 131 transitions, 1283 flow [2024-06-27 22:54:54,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 131 transitions, 1231 flow, removed 22 selfloop flow, removed 1 redundant places. [2024-06-27 22:54:54,265 INFO L231 Difference]: Finished difference. Result has 118 places, 113 transitions, 1065 flow [2024-06-27 22:54:54,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=876, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1065, PETRI_PLACES=118, PETRI_TRANSITIONS=113} [2024-06-27 22:54:54,266 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 64 predicate places. [2024-06-27 22:54:54,266 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 113 transitions, 1065 flow [2024-06-27 22:54:54,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 6 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:54,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:54:54,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:54:54,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 22:54:54,267 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:54:54,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:54:54,267 INFO L85 PathProgramCache]: Analyzing trace with hash -589825212, now seen corresponding path program 3 times [2024-06-27 22:54:54,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:54:54,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808619175] [2024-06-27 22:54:54,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:54:54,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:54:54,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:54:54,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:54:54,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:54:54,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808619175] [2024-06-27 22:54:54,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808619175] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:54:54,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:54:54,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:54:54,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557188022] [2024-06-27 22:54:54,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:54:54,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:54:54,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:54:54,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:54:54,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:54:54,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2024-06-27 22:54:54,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 113 transitions, 1065 flow. Second operand has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 6 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:54,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:54:54,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2024-06-27 22:54:54,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:54:54,858 INFO L124 PetriNetUnfolderBase]: 1249/2655 cut-off events. [2024-06-27 22:54:54,858 INFO L125 PetriNetUnfolderBase]: For 17921/17978 co-relation queries the response was YES. [2024-06-27 22:54:54,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10805 conditions, 2655 events. 1249/2655 cut-off events. For 17921/17978 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 19818 event pairs, 353 based on Foata normal form. 10/2452 useless extension candidates. Maximal degree in co-relation 10750. Up to 1697 conditions per place. [2024-06-27 22:54:54,879 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 96 selfloop transitions, 21 changer transitions 0/140 dead transitions. [2024-06-27 22:54:54,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 140 transitions, 1465 flow [2024-06-27 22:54:54,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:54:54,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:54:54,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 189 transitions. [2024-06-27 22:54:54,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.65625 [2024-06-27 22:54:54,882 INFO L175 Difference]: Start difference. First operand has 118 places, 113 transitions, 1065 flow. Second operand 6 states and 189 transitions. [2024-06-27 22:54:54,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 140 transitions, 1465 flow [2024-06-27 22:54:54,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 140 transitions, 1383 flow, removed 21 selfloop flow, removed 3 redundant places. [2024-06-27 22:54:54,914 INFO L231 Difference]: Finished difference. Result has 122 places, 119 transitions, 1145 flow [2024-06-27 22:54:54,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=983, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1145, PETRI_PLACES=122, PETRI_TRANSITIONS=119} [2024-06-27 22:54:54,915 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 68 predicate places. [2024-06-27 22:54:54,915 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 119 transitions, 1145 flow [2024-06-27 22:54:54,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 6 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:54,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:54:54,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:54:54,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 22:54:54,916 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:54:54,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:54:54,916 INFO L85 PathProgramCache]: Analyzing trace with hash -622156860, now seen corresponding path program 4 times [2024-06-27 22:54:54,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:54:54,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651310286] [2024-06-27 22:54:54,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:54:54,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:54:54,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:54:55,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:54:55,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:54:55,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651310286] [2024-06-27 22:54:55,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651310286] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:54:55,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:54:55,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:54:55,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162382680] [2024-06-27 22:54:55,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:54:55,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:54:55,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:54:55,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:54:55,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:54:55,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2024-06-27 22:54:55,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 119 transitions, 1145 flow. Second operand has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 6 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:55,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:54:55,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2024-06-27 22:54:55,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:54:55,636 INFO L124 PetriNetUnfolderBase]: 1264/2694 cut-off events. [2024-06-27 22:54:55,637 INFO L125 PetriNetUnfolderBase]: For 20774/20831 co-relation queries the response was YES. [2024-06-27 22:54:55,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11256 conditions, 2694 events. 1264/2694 cut-off events. For 20774/20831 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 20225 event pairs, 342 based on Foata normal form. 10/2498 useless extension candidates. Maximal degree in co-relation 11199. Up to 1683 conditions per place. [2024-06-27 22:54:55,658 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 88 selfloop transitions, 29 changer transitions 0/140 dead transitions. [2024-06-27 22:54:55,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 140 transitions, 1499 flow [2024-06-27 22:54:55,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:54:55,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:54:55,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 187 transitions. [2024-06-27 22:54:55,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6493055555555556 [2024-06-27 22:54:55,660 INFO L175 Difference]: Start difference. First operand has 122 places, 119 transitions, 1145 flow. Second operand 6 states and 187 transitions. [2024-06-27 22:54:55,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 140 transitions, 1499 flow [2024-06-27 22:54:55,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 140 transitions, 1393 flow, removed 44 selfloop flow, removed 2 redundant places. [2024-06-27 22:54:55,696 INFO L231 Difference]: Finished difference. Result has 126 places, 122 transitions, 1173 flow [2024-06-27 22:54:55,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1039, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1173, PETRI_PLACES=126, PETRI_TRANSITIONS=122} [2024-06-27 22:54:55,697 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 72 predicate places. [2024-06-27 22:54:55,697 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 122 transitions, 1173 flow [2024-06-27 22:54:55,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 6 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:55,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:54:55,698 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:54:55,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 22:54:55,698 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:54:55,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:54:55,698 INFO L85 PathProgramCache]: Analyzing trace with hash -695181112, now seen corresponding path program 5 times [2024-06-27 22:54:55,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:54:55,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457915739] [2024-06-27 22:54:55,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:54:55,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:54:55,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:54:56,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:54:56,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:54:56,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457915739] [2024-06-27 22:54:56,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457915739] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:54:56,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:54:56,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:54:56,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550576131] [2024-06-27 22:54:56,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:54:56,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:54:56,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:54:56,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:54:56,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:54:56,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2024-06-27 22:54:56,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 122 transitions, 1173 flow. Second operand has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 6 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:56,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:54:56,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2024-06-27 22:54:56,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:54:56,420 INFO L124 PetriNetUnfolderBase]: 1273/2711 cut-off events. [2024-06-27 22:54:56,420 INFO L125 PetriNetUnfolderBase]: For 22738/22795 co-relation queries the response was YES. [2024-06-27 22:54:56,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11541 conditions, 2711 events. 1273/2711 cut-off events. For 22738/22795 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 20350 event pairs, 370 based on Foata normal form. 10/2508 useless extension candidates. Maximal degree in co-relation 11482. Up to 1788 conditions per place. [2024-06-27 22:54:56,448 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 97 selfloop transitions, 20 changer transitions 0/140 dead transitions. [2024-06-27 22:54:56,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 140 transitions, 1525 flow [2024-06-27 22:54:56,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:54:56,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:54:56,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 183 transitions. [2024-06-27 22:54:56,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6354166666666666 [2024-06-27 22:54:56,450 INFO L175 Difference]: Start difference. First operand has 126 places, 122 transitions, 1173 flow. Second operand 6 states and 183 transitions. [2024-06-27 22:54:56,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 140 transitions, 1525 flow [2024-06-27 22:54:56,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 140 transitions, 1413 flow, removed 29 selfloop flow, removed 4 redundant places. [2024-06-27 22:54:56,535 INFO L231 Difference]: Finished difference. Result has 128 places, 125 transitions, 1183 flow [2024-06-27 22:54:56,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1061, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1183, PETRI_PLACES=128, PETRI_TRANSITIONS=125} [2024-06-27 22:54:56,536 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 74 predicate places. [2024-06-27 22:54:56,536 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 125 transitions, 1183 flow [2024-06-27 22:54:56,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 6 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:56,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:54:56,536 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:54:56,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 22:54:56,536 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:54:56,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:54:56,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1268408058, now seen corresponding path program 6 times [2024-06-27 22:54:56,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:54:56,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39424694] [2024-06-27 22:54:56,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:54:56,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:54:56,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:54:56,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:54:56,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:54:56,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39424694] [2024-06-27 22:54:56,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39424694] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:54:56,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:54:56,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:54:56,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203197439] [2024-06-27 22:54:56,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:54:56,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:54:56,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:54:56,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:54:56,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:54:56,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2024-06-27 22:54:56,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 125 transitions, 1183 flow. Second operand has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 6 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:56,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:54:56,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2024-06-27 22:54:56,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:54:57,228 INFO L124 PetriNetUnfolderBase]: 1285/2763 cut-off events. [2024-06-27 22:54:57,229 INFO L125 PetriNetUnfolderBase]: For 24300/24350 co-relation queries the response was YES. [2024-06-27 22:54:57,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11673 conditions, 2763 events. 1285/2763 cut-off events. For 24300/24350 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 21002 event pairs, 374 based on Foata normal form. 5/2562 useless extension candidates. Maximal degree in co-relation 11613. Up to 1643 conditions per place. [2024-06-27 22:54:57,246 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 75 selfloop transitions, 45 changer transitions 0/143 dead transitions. [2024-06-27 22:54:57,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 143 transitions, 1547 flow [2024-06-27 22:54:57,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:54:57,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:54:57,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 186 transitions. [2024-06-27 22:54:57,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6458333333333334 [2024-06-27 22:54:57,247 INFO L175 Difference]: Start difference. First operand has 128 places, 125 transitions, 1183 flow. Second operand 6 states and 186 transitions. [2024-06-27 22:54:57,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 143 transitions, 1547 flow [2024-06-27 22:54:57,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 143 transitions, 1405 flow, removed 36 selfloop flow, removed 5 redundant places. [2024-06-27 22:54:57,281 INFO L231 Difference]: Finished difference. Result has 129 places, 128 transitions, 1219 flow [2024-06-27 22:54:57,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1041, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1219, PETRI_PLACES=129, PETRI_TRANSITIONS=128} [2024-06-27 22:54:57,281 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 75 predicate places. [2024-06-27 22:54:57,282 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 128 transitions, 1219 flow [2024-06-27 22:54:57,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 6 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:57,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:54:57,282 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:54:57,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 22:54:57,282 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:54:57,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:54:57,283 INFO L85 PathProgramCache]: Analyzing trace with hash 642993734, now seen corresponding path program 1 times [2024-06-27 22:54:57,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:54:57,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852835416] [2024-06-27 22:54:57,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:54:57,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:54:57,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:54:57,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:54:57,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:54:57,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852835416] [2024-06-27 22:54:57,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852835416] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:54:57,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:54:57,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:54:57,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516334259] [2024-06-27 22:54:57,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:54:57,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:54:57,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:54:57,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:54:57,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:54:57,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 48 [2024-06-27 22:54:57,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 128 transitions, 1219 flow. Second operand has 7 states, 7 states have (on average 22.142857142857142) internal successors, (155), 7 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:57,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:54:57,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 48 [2024-06-27 22:54:57,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:54:58,448 INFO L124 PetriNetUnfolderBase]: 1602/3273 cut-off events. [2024-06-27 22:54:58,448 INFO L125 PetriNetUnfolderBase]: For 29893/29985 co-relation queries the response was YES. [2024-06-27 22:54:58,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14127 conditions, 3273 events. 1602/3273 cut-off events. For 29893/29985 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 24696 event pairs, 617 based on Foata normal form. 10/3036 useless extension candidates. Maximal degree in co-relation 14066. Up to 2168 conditions per place. [2024-06-27 22:54:58,476 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 122 selfloop transitions, 29 changer transitions 0/172 dead transitions. [2024-06-27 22:54:58,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 172 transitions, 1824 flow [2024-06-27 22:54:58,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:54:58,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:54:58,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 256 transitions. [2024-06-27 22:54:58,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5925925925925926 [2024-06-27 22:54:58,478 INFO L175 Difference]: Start difference. First operand has 129 places, 128 transitions, 1219 flow. Second operand 9 states and 256 transitions. [2024-06-27 22:54:58,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 172 transitions, 1824 flow [2024-06-27 22:54:58,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 172 transitions, 1658 flow, removed 36 selfloop flow, removed 4 redundant places. [2024-06-27 22:54:58,542 INFO L231 Difference]: Finished difference. Result has 136 places, 141 transitions, 1353 flow [2024-06-27 22:54:58,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1061, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1353, PETRI_PLACES=136, PETRI_TRANSITIONS=141} [2024-06-27 22:54:58,542 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 82 predicate places. [2024-06-27 22:54:58,543 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 141 transitions, 1353 flow [2024-06-27 22:54:58,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.142857142857142) internal successors, (155), 7 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:58,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:54:58,543 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:54:58,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 22:54:58,543 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:54:58,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:54:58,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1358651338, now seen corresponding path program 2 times [2024-06-27 22:54:58,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:54:58,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121284844] [2024-06-27 22:54:58,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:54:58,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:54:58,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:54:59,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:54:59,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:54:59,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121284844] [2024-06-27 22:54:59,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121284844] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:54:59,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:54:59,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:54:59,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22019417] [2024-06-27 22:54:59,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:54:59,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:54:59,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:54:59,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:54:59,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:54:59,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2024-06-27 22:54:59,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 141 transitions, 1353 flow. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:59,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:54:59,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2024-06-27 22:54:59,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:54:59,685 INFO L124 PetriNetUnfolderBase]: 1543/3217 cut-off events. [2024-06-27 22:54:59,686 INFO L125 PetriNetUnfolderBase]: For 31617/31679 co-relation queries the response was YES. [2024-06-27 22:54:59,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13997 conditions, 3217 events. 1543/3217 cut-off events. For 31617/31679 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 24781 event pairs, 611 based on Foata normal form. 18/2957 useless extension candidates. Maximal degree in co-relation 13933. Up to 2098 conditions per place. [2024-06-27 22:54:59,713 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 117 selfloop transitions, 25 changer transitions 0/166 dead transitions. [2024-06-27 22:54:59,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 166 transitions, 1755 flow [2024-06-27 22:54:59,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:54:59,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:54:59,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 216 transitions. [2024-06-27 22:54:59,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6428571428571429 [2024-06-27 22:54:59,714 INFO L175 Difference]: Start difference. First operand has 136 places, 141 transitions, 1353 flow. Second operand 7 states and 216 transitions. [2024-06-27 22:54:59,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 166 transitions, 1755 flow [2024-06-27 22:54:59,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 166 transitions, 1662 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-27 22:54:59,768 INFO L231 Difference]: Finished difference. Result has 137 places, 142 transitions, 1336 flow [2024-06-27 22:54:59,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1262, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1336, PETRI_PLACES=137, PETRI_TRANSITIONS=142} [2024-06-27 22:54:59,768 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 83 predicate places. [2024-06-27 22:54:59,768 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 142 transitions, 1336 flow [2024-06-27 22:54:59,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:59,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:54:59,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:54:59,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 22:54:59,769 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:54:59,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:54:59,769 INFO L85 PathProgramCache]: Analyzing trace with hash -605943612, now seen corresponding path program 3 times [2024-06-27 22:54:59,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:54:59,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476691904] [2024-06-27 22:54:59,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:54:59,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:54:59,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:55:00,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:55:00,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:55:00,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476691904] [2024-06-27 22:55:00,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476691904] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:55:00,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:55:00,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:55:00,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192974400] [2024-06-27 22:55:00,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:55:00,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:55:00,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:55:00,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:55:00,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:55:00,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2024-06-27 22:55:00,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 142 transitions, 1336 flow. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:00,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:55:00,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2024-06-27 22:55:00,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:55:00,874 INFO L124 PetriNetUnfolderBase]: 1604/3347 cut-off events. [2024-06-27 22:55:00,875 INFO L125 PetriNetUnfolderBase]: For 32313/32376 co-relation queries the response was YES. [2024-06-27 22:55:00,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14473 conditions, 3347 events. 1604/3347 cut-off events. For 32313/32376 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 26039 event pairs, 625 based on Foata normal form. 19/3083 useless extension candidates. Maximal degree in co-relation 14410. Up to 1972 conditions per place. [2024-06-27 22:55:00,904 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 116 selfloop transitions, 32 changer transitions 0/172 dead transitions. [2024-06-27 22:55:00,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 172 transitions, 1784 flow [2024-06-27 22:55:00,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:55:00,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:55:00,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 220 transitions. [2024-06-27 22:55:00,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6547619047619048 [2024-06-27 22:55:00,905 INFO L175 Difference]: Start difference. First operand has 137 places, 142 transitions, 1336 flow. Second operand 7 states and 220 transitions. [2024-06-27 22:55:00,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 172 transitions, 1784 flow [2024-06-27 22:55:00,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 172 transitions, 1724 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-27 22:55:00,959 INFO L231 Difference]: Finished difference. Result has 139 places, 143 transitions, 1367 flow [2024-06-27 22:55:00,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1276, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1367, PETRI_PLACES=139, PETRI_TRANSITIONS=143} [2024-06-27 22:55:00,960 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 85 predicate places. [2024-06-27 22:55:00,960 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 143 transitions, 1367 flow [2024-06-27 22:55:00,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:00,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:55:00,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:55:00,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 22:55:00,961 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:55:00,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:55:00,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1685244458, now seen corresponding path program 4 times [2024-06-27 22:55:00,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:55:00,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964447564] [2024-06-27 22:55:00,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:55:00,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:55:00,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:55:01,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:55:01,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:55:01,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964447564] [2024-06-27 22:55:01,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964447564] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:55:01,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:55:01,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:55:01,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787335563] [2024-06-27 22:55:01,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:55:01,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:55:01,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:55:01,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:55:01,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:55:01,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2024-06-27 22:55:01,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 143 transitions, 1367 flow. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:01,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:55:01,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2024-06-27 22:55:01,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:55:02,236 INFO L124 PetriNetUnfolderBase]: 1754/3661 cut-off events. [2024-06-27 22:55:02,236 INFO L125 PetriNetUnfolderBase]: For 39266/39339 co-relation queries the response was YES. [2024-06-27 22:55:02,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16174 conditions, 3661 events. 1754/3661 cut-off events. For 39266/39339 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 28932 event pairs, 688 based on Foata normal form. 20/3361 useless extension candidates. Maximal degree in co-relation 16110. Up to 2278 conditions per place. [2024-06-27 22:55:02,266 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 114 selfloop transitions, 36 changer transitions 0/174 dead transitions. [2024-06-27 22:55:02,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 174 transitions, 1889 flow [2024-06-27 22:55:02,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:55:02,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:55:02,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 223 transitions. [2024-06-27 22:55:02,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6636904761904762 [2024-06-27 22:55:02,268 INFO L175 Difference]: Start difference. First operand has 139 places, 143 transitions, 1367 flow. Second operand 7 states and 223 transitions. [2024-06-27 22:55:02,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 174 transitions, 1889 flow [2024-06-27 22:55:02,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 174 transitions, 1814 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-27 22:55:02,324 INFO L231 Difference]: Finished difference. Result has 141 places, 145 transitions, 1414 flow [2024-06-27 22:55:02,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1292, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1414, PETRI_PLACES=141, PETRI_TRANSITIONS=145} [2024-06-27 22:55:02,325 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 87 predicate places. [2024-06-27 22:55:02,325 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 145 transitions, 1414 flow [2024-06-27 22:55:02,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:02,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:55:02,325 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:55:02,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 22:55:02,325 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:55:02,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:55:02,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1004300342, now seen corresponding path program 5 times [2024-06-27 22:55:02,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:55:02,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270245058] [2024-06-27 22:55:02,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:55:02,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:55:02,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:55:03,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:55:03,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:55:03,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270245058] [2024-06-27 22:55:03,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270245058] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:55:03,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:55:03,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:55:03,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280742689] [2024-06-27 22:55:03,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:55:03,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:55:03,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:55:03,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:55:03,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:55:03,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2024-06-27 22:55:03,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 145 transitions, 1414 flow. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:03,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:55:03,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2024-06-27 22:55:03,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:55:03,662 INFO L124 PetriNetUnfolderBase]: 1741/3637 cut-off events. [2024-06-27 22:55:03,662 INFO L125 PetriNetUnfolderBase]: For 37307/37379 co-relation queries the response was YES. [2024-06-27 22:55:03,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15715 conditions, 3637 events. 1741/3637 cut-off events. For 37307/37379 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 28772 event pairs, 693 based on Foata normal form. 20/3333 useless extension candidates. Maximal degree in co-relation 15650. Up to 2371 conditions per place. [2024-06-27 22:55:03,695 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 111 selfloop transitions, 31 changer transitions 0/166 dead transitions. [2024-06-27 22:55:03,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 166 transitions, 1786 flow [2024-06-27 22:55:03,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:55:03,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:55:03,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 215 transitions. [2024-06-27 22:55:03,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6398809523809523 [2024-06-27 22:55:03,697 INFO L175 Difference]: Start difference. First operand has 141 places, 145 transitions, 1414 flow. Second operand 7 states and 215 transitions. [2024-06-27 22:55:03,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 166 transitions, 1786 flow [2024-06-27 22:55:03,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 166 transitions, 1720 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-27 22:55:03,775 INFO L231 Difference]: Finished difference. Result has 145 places, 145 transitions, 1414 flow [2024-06-27 22:55:03,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1348, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1414, PETRI_PLACES=145, PETRI_TRANSITIONS=145} [2024-06-27 22:55:03,780 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 91 predicate places. [2024-06-27 22:55:03,780 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 145 transitions, 1414 flow [2024-06-27 22:55:03,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:03,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:55:03,780 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:55:03,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 22:55:03,781 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:55:03,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:55:03,781 INFO L85 PathProgramCache]: Analyzing trace with hash -690334202, now seen corresponding path program 6 times [2024-06-27 22:55:03,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:55:03,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840635374] [2024-06-27 22:55:03,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:55:03,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:55:03,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:55:04,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:55:04,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:55:04,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840635374] [2024-06-27 22:55:04,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840635374] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:55:04,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:55:04,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:55:04,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860588037] [2024-06-27 22:55:04,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:55:04,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:55:04,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:55:04,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:55:04,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:55:04,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2024-06-27 22:55:04,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 145 transitions, 1414 flow. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:04,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:55:04,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2024-06-27 22:55:04,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:55:05,018 INFO L124 PetriNetUnfolderBase]: 1756/3694 cut-off events. [2024-06-27 22:55:05,019 INFO L125 PetriNetUnfolderBase]: For 33881/33953 co-relation queries the response was YES. [2024-06-27 22:55:05,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15481 conditions, 3694 events. 1756/3694 cut-off events. For 33881/33953 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 29373 event pairs, 672 based on Foata normal form. 20/3401 useless extension candidates. Maximal degree in co-relation 15414. Up to 1904 conditions per place. [2024-06-27 22:55:05,047 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 108 selfloop transitions, 44 changer transitions 0/176 dead transitions. [2024-06-27 22:55:05,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 176 transitions, 1900 flow [2024-06-27 22:55:05,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:55:05,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:55:05,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 223 transitions. [2024-06-27 22:55:05,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6636904761904762 [2024-06-27 22:55:05,050 INFO L175 Difference]: Start difference. First operand has 145 places, 145 transitions, 1414 flow. Second operand 7 states and 223 transitions. [2024-06-27 22:55:05,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 176 transitions, 1900 flow [2024-06-27 22:55:05,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 176 transitions, 1831 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-27 22:55:05,105 INFO L231 Difference]: Finished difference. Result has 146 places, 146 transitions, 1463 flow [2024-06-27 22:55:05,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1345, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1463, PETRI_PLACES=146, PETRI_TRANSITIONS=146} [2024-06-27 22:55:05,107 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 92 predicate places. [2024-06-27 22:55:05,108 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 146 transitions, 1463 flow [2024-06-27 22:55:05,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:05,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:55:05,108 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:55:05,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 22:55:05,108 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:55:05,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:55:05,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1663890935, now seen corresponding path program 1 times [2024-06-27 22:55:05,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:55:05,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889546425] [2024-06-27 22:55:05,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:55:05,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:55:05,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:55:05,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:55:05,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:55:05,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889546425] [2024-06-27 22:55:05,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889546425] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:55:05,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:55:05,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:55:05,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148110876] [2024-06-27 22:55:05,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:55:05,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:55:05,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:55:05,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:55:05,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:55:05,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 48 [2024-06-27 22:55:05,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 146 transitions, 1463 flow. Second operand has 8 states, 8 states have (on average 21.875) internal successors, (175), 8 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:05,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:55:05,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 48 [2024-06-27 22:55:05,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:55:06,409 INFO L124 PetriNetUnfolderBase]: 2019/4173 cut-off events. [2024-06-27 22:55:06,409 INFO L125 PetriNetUnfolderBase]: For 43792/43914 co-relation queries the response was YES. [2024-06-27 22:55:06,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18151 conditions, 4173 events. 2019/4173 cut-off events. For 43792/43914 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 32944 event pairs, 462 based on Foata normal form. 16/3886 useless extension candidates. Maximal degree in co-relation 18082. Up to 2616 conditions per place. [2024-06-27 22:55:06,444 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 152 selfloop transitions, 23 changer transitions 0/196 dead transitions. [2024-06-27 22:55:06,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 196 transitions, 2092 flow [2024-06-27 22:55:06,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:55:06,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:55:06,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 261 transitions. [2024-06-27 22:55:06,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2024-06-27 22:55:06,448 INFO L175 Difference]: Start difference. First operand has 146 places, 146 transitions, 1463 flow. Second operand 9 states and 261 transitions. [2024-06-27 22:55:06,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 196 transitions, 2092 flow [2024-06-27 22:55:06,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 196 transitions, 1988 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-27 22:55:06,524 INFO L231 Difference]: Finished difference. Result has 151 places, 152 transitions, 1555 flow [2024-06-27 22:55:06,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1359, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1555, PETRI_PLACES=151, PETRI_TRANSITIONS=152} [2024-06-27 22:55:06,537 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 97 predicate places. [2024-06-27 22:55:06,538 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 152 transitions, 1555 flow [2024-06-27 22:55:06,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.875) internal successors, (175), 8 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:06,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:55:06,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:55:06,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 22:55:06,538 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:55:06,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:55:06,539 INFO L85 PathProgramCache]: Analyzing trace with hash 807466095, now seen corresponding path program 2 times [2024-06-27 22:55:06,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:55:06,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799303884] [2024-06-27 22:55:06,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:55:06,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:55:06,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:55:07,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:55:07,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:55:07,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799303884] [2024-06-27 22:55:07,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799303884] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:55:07,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:55:07,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:55:07,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077511044] [2024-06-27 22:55:07,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:55:07,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:55:07,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:55:07,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:55:07,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:55:07,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2024-06-27 22:55:07,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 152 transitions, 1555 flow. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:07,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:55:07,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2024-06-27 22:55:07,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:55:07,677 INFO L124 PetriNetUnfolderBase]: 1952/4109 cut-off events. [2024-06-27 22:55:07,677 INFO L125 PetriNetUnfolderBase]: For 50696/50794 co-relation queries the response was YES. [2024-06-27 22:55:07,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18232 conditions, 4109 events. 1952/4109 cut-off events. For 50696/50794 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 33234 event pairs, 406 based on Foata normal form. 20/3803 useless extension candidates. Maximal degree in co-relation 18161. Up to 2311 conditions per place. [2024-06-27 22:55:07,714 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 115 selfloop transitions, 43 changer transitions 0/182 dead transitions. [2024-06-27 22:55:07,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 182 transitions, 2201 flow [2024-06-27 22:55:07,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:55:07,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:55:07,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 191 transitions. [2024-06-27 22:55:07,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6631944444444444 [2024-06-27 22:55:07,716 INFO L175 Difference]: Start difference. First operand has 151 places, 152 transitions, 1555 flow. Second operand 6 states and 191 transitions. [2024-06-27 22:55:07,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 182 transitions, 2201 flow [2024-06-27 22:55:07,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 182 transitions, 2042 flow, removed 67 selfloop flow, removed 5 redundant places. [2024-06-27 22:55:07,828 INFO L231 Difference]: Finished difference. Result has 154 places, 160 transitions, 1750 flow [2024-06-27 22:55:07,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1429, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1750, PETRI_PLACES=154, PETRI_TRANSITIONS=160} [2024-06-27 22:55:07,829 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 100 predicate places. [2024-06-27 22:55:07,829 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 160 transitions, 1750 flow [2024-06-27 22:55:07,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:07,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:55:07,852 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:55:07,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 22:55:07,852 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:55:07,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:55:07,853 INFO L85 PathProgramCache]: Analyzing trace with hash -75859863, now seen corresponding path program 3 times [2024-06-27 22:55:07,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:55:07,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430175759] [2024-06-27 22:55:07,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:55:07,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:55:07,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:55:08,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:55:08,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:55:08,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430175759] [2024-06-27 22:55:08,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430175759] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:55:08,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:55:08,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:55:08,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103303574] [2024-06-27 22:55:08,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:55:08,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:55:08,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:55:08,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:55:08,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:55:08,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2024-06-27 22:55:08,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 160 transitions, 1750 flow. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:08,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:55:08,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2024-06-27 22:55:08,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:55:09,036 INFO L124 PetriNetUnfolderBase]: 1997/4198 cut-off events. [2024-06-27 22:55:09,036 INFO L125 PetriNetUnfolderBase]: For 55262/55366 co-relation queries the response was YES. [2024-06-27 22:55:09,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18960 conditions, 4198 events. 1997/4198 cut-off events. For 55262/55366 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 34092 event pairs, 409 based on Foata normal form. 20/3883 useless extension candidates. Maximal degree in co-relation 18886. Up to 2283 conditions per place. [2024-06-27 22:55:09,078 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 106 selfloop transitions, 57 changer transitions 0/187 dead transitions. [2024-06-27 22:55:09,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 187 transitions, 2276 flow [2024-06-27 22:55:09,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:55:09,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:55:09,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 221 transitions. [2024-06-27 22:55:09,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6577380952380952 [2024-06-27 22:55:09,080 INFO L175 Difference]: Start difference. First operand has 154 places, 160 transitions, 1750 flow. Second operand 7 states and 221 transitions. [2024-06-27 22:55:09,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 187 transitions, 2276 flow [2024-06-27 22:55:09,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 187 transitions, 2192 flow, removed 38 selfloop flow, removed 1 redundant places. [2024-06-27 22:55:09,229 INFO L231 Difference]: Finished difference. Result has 160 places, 162 transitions, 1859 flow [2024-06-27 22:55:09,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1666, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1859, PETRI_PLACES=160, PETRI_TRANSITIONS=162} [2024-06-27 22:55:09,230 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 106 predicate places. [2024-06-27 22:55:09,230 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 162 transitions, 1859 flow [2024-06-27 22:55:09,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:09,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:55:09,231 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:55:09,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 22:55:09,231 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:55:09,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:55:09,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1199742393, now seen corresponding path program 1 times [2024-06-27 22:55:09,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:55:09,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746582190] [2024-06-27 22:55:09,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:55:09,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:55:09,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:55:09,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:55:09,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:55:09,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746582190] [2024-06-27 22:55:09,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746582190] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:55:09,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:55:09,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:55:09,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706805159] [2024-06-27 22:55:09,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:55:09,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:55:09,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:55:09,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:55:09,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:55:09,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2024-06-27 22:55:09,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 162 transitions, 1859 flow. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:09,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:55:09,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2024-06-27 22:55:09,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:55:10,329 INFO L124 PetriNetUnfolderBase]: 2015/4223 cut-off events. [2024-06-27 22:55:10,329 INFO L125 PetriNetUnfolderBase]: For 57690/57802 co-relation queries the response was YES. [2024-06-27 22:55:10,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19510 conditions, 4223 events. 2015/4223 cut-off events. For 57690/57802 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 34468 event pairs, 594 based on Foata normal form. 20/3889 useless extension candidates. Maximal degree in co-relation 19434. Up to 2686 conditions per place. [2024-06-27 22:55:10,365 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 127 selfloop transitions, 33 changer transitions 0/184 dead transitions. [2024-06-27 22:55:10,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 184 transitions, 2303 flow [2024-06-27 22:55:10,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:55:10,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:55:10,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 189 transitions. [2024-06-27 22:55:10,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.65625 [2024-06-27 22:55:10,367 INFO L175 Difference]: Start difference. First operand has 160 places, 162 transitions, 1859 flow. Second operand 6 states and 189 transitions. [2024-06-27 22:55:10,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 184 transitions, 2303 flow [2024-06-27 22:55:10,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 184 transitions, 2138 flow, removed 29 selfloop flow, removed 5 redundant places. [2024-06-27 22:55:10,478 INFO L231 Difference]: Finished difference. Result has 161 places, 163 transitions, 1800 flow [2024-06-27 22:55:10,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1694, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1800, PETRI_PLACES=161, PETRI_TRANSITIONS=163} [2024-06-27 22:55:10,479 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 107 predicate places. [2024-06-27 22:55:10,479 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 163 transitions, 1800 flow [2024-06-27 22:55:10,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:10,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:55:10,479 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:55:10,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 22:55:10,480 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:55:10,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:55:10,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1807403017, now seen corresponding path program 2 times [2024-06-27 22:55:10,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:55:10,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554506177] [2024-06-27 22:55:10,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:55:10,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:55:10,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:55:10,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:55:10,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:55:10,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554506177] [2024-06-27 22:55:10,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554506177] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:55:10,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:55:10,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:55:10,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539742830] [2024-06-27 22:55:10,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:55:10,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:55:10,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:55:10,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:55:10,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:55:11,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2024-06-27 22:55:11,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 163 transitions, 1800 flow. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:11,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:55:11,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2024-06-27 22:55:11,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:55:11,613 INFO L124 PetriNetUnfolderBase]: 2076/4376 cut-off events. [2024-06-27 22:55:11,613 INFO L125 PetriNetUnfolderBase]: For 60075/60196 co-relation queries the response was YES. [2024-06-27 22:55:11,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20113 conditions, 4376 events. 2076/4376 cut-off events. For 60075/60196 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 36011 event pairs, 619 based on Foata normal form. 20/4030 useless extension candidates. Maximal degree in co-relation 20036. Up to 2762 conditions per place. [2024-06-27 22:55:11,653 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 121 selfloop transitions, 43 changer transitions 0/188 dead transitions. [2024-06-27 22:55:11,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 188 transitions, 2264 flow [2024-06-27 22:55:11,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:55:11,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:55:11,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 219 transitions. [2024-06-27 22:55:11,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6517857142857143 [2024-06-27 22:55:11,655 INFO L175 Difference]: Start difference. First operand has 161 places, 163 transitions, 1800 flow. Second operand 7 states and 219 transitions. [2024-06-27 22:55:11,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 188 transitions, 2264 flow [2024-06-27 22:55:11,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 188 transitions, 2200 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-27 22:55:11,834 INFO L231 Difference]: Finished difference. Result has 164 places, 164 transitions, 1861 flow [2024-06-27 22:55:11,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1736, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1861, PETRI_PLACES=164, PETRI_TRANSITIONS=164} [2024-06-27 22:55:11,835 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 110 predicate places. [2024-06-27 22:55:11,835 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 164 transitions, 1861 flow [2024-06-27 22:55:11,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:11,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:55:11,835 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:55:11,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 22:55:11,836 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:55:11,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:55:11,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1026090003, now seen corresponding path program 3 times [2024-06-27 22:55:11,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:55:11,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889418944] [2024-06-27 22:55:11,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:55:11,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:55:11,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:55:12,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:55:12,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:55:12,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889418944] [2024-06-27 22:55:12,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889418944] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:55:12,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:55:12,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:55:12,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69738821] [2024-06-27 22:55:12,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:55:12,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:55:12,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:55:12,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:55:12,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:55:12,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2024-06-27 22:55:12,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 164 transitions, 1861 flow. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:12,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:55:12,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2024-06-27 22:55:12,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:55:12,954 INFO L124 PetriNetUnfolderBase]: 2256/4736 cut-off events. [2024-06-27 22:55:12,954 INFO L125 PetriNetUnfolderBase]: For 69385/69515 co-relation queries the response was YES. [2024-06-27 22:55:12,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22038 conditions, 4736 events. 2256/4736 cut-off events. For 69385/69515 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 39424 event pairs, 603 based on Foata normal form. 21/4380 useless extension candidates. Maximal degree in co-relation 21960. Up to 2604 conditions per place. [2024-06-27 22:55:13,003 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 116 selfloop transitions, 62 changer transitions 0/202 dead transitions. [2024-06-27 22:55:13,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 202 transitions, 2560 flow [2024-06-27 22:55:13,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:55:13,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:55:13,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 224 transitions. [2024-06-27 22:55:13,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-06-27 22:55:13,004 INFO L175 Difference]: Start difference. First operand has 164 places, 164 transitions, 1861 flow. Second operand 7 states and 224 transitions. [2024-06-27 22:55:13,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 202 transitions, 2560 flow [2024-06-27 22:55:13,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 202 transitions, 2471 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-27 22:55:13,141 INFO L231 Difference]: Finished difference. Result has 169 places, 172 transitions, 2181 flow [2024-06-27 22:55:13,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1772, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2181, PETRI_PLACES=169, PETRI_TRANSITIONS=172} [2024-06-27 22:55:13,141 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 115 predicate places. [2024-06-27 22:55:13,141 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 172 transitions, 2181 flow [2024-06-27 22:55:13,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:13,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:55:13,142 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:55:13,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 22:55:13,142 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:55:13,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:55:13,142 INFO L85 PathProgramCache]: Analyzing trace with hash 92963013, now seen corresponding path program 4 times [2024-06-27 22:55:13,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:55:13,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143112464] [2024-06-27 22:55:13,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:55:13,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:55:13,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:55:13,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:55:13,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:55:13,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143112464] [2024-06-27 22:55:13,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143112464] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:55:13,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:55:13,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:55:13,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085999593] [2024-06-27 22:55:13,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:55:13,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:55:13,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:55:13,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:55:13,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:55:13,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 48 [2024-06-27 22:55:13,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 172 transitions, 2181 flow. Second operand has 8 states, 8 states have (on average 21.875) internal successors, (175), 8 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:13,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:55:13,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 48 [2024-06-27 22:55:13,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:55:14,353 INFO L124 PetriNetUnfolderBase]: 2696/5499 cut-off events. [2024-06-27 22:55:14,354 INFO L125 PetriNetUnfolderBase]: For 82665/82853 co-relation queries the response was YES. [2024-06-27 22:55:14,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26392 conditions, 5499 events. 2696/5499 cut-off events. For 82665/82853 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 45525 event pairs, 709 based on Foata normal form. 19/5129 useless extension candidates. Maximal degree in co-relation 26309. Up to 3535 conditions per place. [2024-06-27 22:55:14,411 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 164 selfloop transitions, 37 changer transitions 0/222 dead transitions. [2024-06-27 22:55:14,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 222 transitions, 2864 flow [2024-06-27 22:55:14,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:55:14,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:55:14,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 284 transitions. [2024-06-27 22:55:14,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5916666666666667 [2024-06-27 22:55:14,414 INFO L175 Difference]: Start difference. First operand has 169 places, 172 transitions, 2181 flow. Second operand 10 states and 284 transitions. [2024-06-27 22:55:14,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 222 transitions, 2864 flow [2024-06-27 22:55:14,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 222 transitions, 2774 flow, removed 38 selfloop flow, removed 2 redundant places. [2024-06-27 22:55:14,662 INFO L231 Difference]: Finished difference. Result has 179 places, 184 transitions, 2356 flow [2024-06-27 22:55:14,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2091, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2356, PETRI_PLACES=179, PETRI_TRANSITIONS=184} [2024-06-27 22:55:14,663 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 125 predicate places. [2024-06-27 22:55:14,663 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 184 transitions, 2356 flow [2024-06-27 22:55:14,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.875) internal successors, (175), 8 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:14,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:55:14,663 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:55:14,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 22:55:14,664 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:55:14,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:55:14,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1182023341, now seen corresponding path program 5 times [2024-06-27 22:55:14,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:55:14,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555153896] [2024-06-27 22:55:14,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:55:14,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:55:14,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:55:15,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:55:15,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:55:15,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555153896] [2024-06-27 22:55:15,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555153896] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:55:15,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:55:15,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:55:15,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055291181] [2024-06-27 22:55:15,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:55:15,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:55:15,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:55:15,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:55:15,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:55:15,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2024-06-27 22:55:15,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 184 transitions, 2356 flow. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:15,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:55:15,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2024-06-27 22:55:15,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:55:15,908 INFO L124 PetriNetUnfolderBase]: 2521/5202 cut-off events. [2024-06-27 22:55:15,908 INFO L125 PetriNetUnfolderBase]: For 92087/92247 co-relation queries the response was YES. [2024-06-27 22:55:15,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26091 conditions, 5202 events. 2521/5202 cut-off events. For 92087/92247 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 43763 event pairs, 523 based on Foata normal form. 22/4840 useless extension candidates. Maximal degree in co-relation 26005. Up to 2907 conditions per place. [2024-06-27 22:55:15,968 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 149 selfloop transitions, 42 changer transitions 0/216 dead transitions. [2024-06-27 22:55:15,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 216 transitions, 3084 flow [2024-06-27 22:55:15,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:55:15,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:55:15,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 218 transitions. [2024-06-27 22:55:15,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6488095238095238 [2024-06-27 22:55:15,969 INFO L175 Difference]: Start difference. First operand has 179 places, 184 transitions, 2356 flow. Second operand 7 states and 218 transitions. [2024-06-27 22:55:15,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 216 transitions, 3084 flow [2024-06-27 22:55:16,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 216 transitions, 2945 flow, removed 52 selfloop flow, removed 5 redundant places. [2024-06-27 22:55:16,224 INFO L231 Difference]: Finished difference. Result has 182 places, 190 transitions, 2522 flow [2024-06-27 22:55:16,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2217, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2522, PETRI_PLACES=182, PETRI_TRANSITIONS=190} [2024-06-27 22:55:16,225 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 128 predicate places. [2024-06-27 22:55:16,225 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 190 transitions, 2522 flow [2024-06-27 22:55:16,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:16,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:55:16,226 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:55:16,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 22:55:16,226 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:55:16,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:55:16,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1983137859, now seen corresponding path program 6 times [2024-06-27 22:55:16,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:55:16,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099405904] [2024-06-27 22:55:16,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:55:16,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:55:16,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:55:16,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:55:16,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:55:16,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099405904] [2024-06-27 22:55:16,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099405904] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:55:16,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:55:16,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:55:16,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962668638] [2024-06-27 22:55:16,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:55:16,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:55:16,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:55:16,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:55:16,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:55:16,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2024-06-27 22:55:16,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 190 transitions, 2522 flow. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:16,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:55:16,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2024-06-27 22:55:16,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:55:17,295 INFO L124 PetriNetUnfolderBase]: 2504/5173 cut-off events. [2024-06-27 22:55:17,295 INFO L125 PetriNetUnfolderBase]: For 88329/88488 co-relation queries the response was YES. [2024-06-27 22:55:17,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25695 conditions, 5173 events. 2504/5173 cut-off events. For 88329/88488 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 43470 event pairs, 516 based on Foata normal form. 22/4815 useless extension candidates. Maximal degree in co-relation 25608. Up to 3043 conditions per place. [2024-06-27 22:55:17,344 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 156 selfloop transitions, 36 changer transitions 0/217 dead transitions. [2024-06-27 22:55:17,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 217 transitions, 2998 flow [2024-06-27 22:55:17,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:55:17,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:55:17,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 218 transitions. [2024-06-27 22:55:17,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6488095238095238 [2024-06-27 22:55:17,346 INFO L175 Difference]: Start difference. First operand has 182 places, 190 transitions, 2522 flow. Second operand 7 states and 218 transitions. [2024-06-27 22:55:17,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 217 transitions, 2998 flow [2024-06-27 22:55:17,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 217 transitions, 2799 flow, removed 87 selfloop flow, removed 2 redundant places. [2024-06-27 22:55:17,618 INFO L231 Difference]: Finished difference. Result has 187 places, 190 transitions, 2400 flow [2024-06-27 22:55:17,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2323, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2400, PETRI_PLACES=187, PETRI_TRANSITIONS=190} [2024-06-27 22:55:17,619 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 133 predicate places. [2024-06-27 22:55:17,619 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 190 transitions, 2400 flow [2024-06-27 22:55:17,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:17,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:55:17,619 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:55:17,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 22:55:17,620 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:55:17,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:55:17,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1950806211, now seen corresponding path program 7 times [2024-06-27 22:55:17,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:55:17,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69832171] [2024-06-27 22:55:17,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:55:17,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:55:17,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:55:18,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:55:18,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:55:18,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69832171] [2024-06-27 22:55:18,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69832171] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:55:18,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:55:18,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:55:18,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56914923] [2024-06-27 22:55:18,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:55:18,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:55:18,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:55:18,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:55:18,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:55:18,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 48 [2024-06-27 22:55:18,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 190 transitions, 2400 flow. Second operand has 8 states, 8 states have (on average 21.875) internal successors, (175), 8 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:18,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:55:18,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 48 [2024-06-27 22:55:18,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:55:18,925 INFO L124 PetriNetUnfolderBase]: 2898/5875 cut-off events. [2024-06-27 22:55:18,925 INFO L125 PetriNetUnfolderBase]: For 86688/86901 co-relation queries the response was YES. [2024-06-27 22:55:18,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28418 conditions, 5875 events. 2898/5875 cut-off events. For 86688/86901 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 49179 event pairs, 532 based on Foata normal form. 19/5533 useless extension candidates. Maximal degree in co-relation 28328. Up to 3231 conditions per place. [2024-06-27 22:55:18,994 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 153 selfloop transitions, 49 changer transitions 0/223 dead transitions. [2024-06-27 22:55:18,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 223 transitions, 3064 flow [2024-06-27 22:55:18,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:55:18,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:55:18,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 252 transitions. [2024-06-27 22:55:18,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-06-27 22:55:18,996 INFO L175 Difference]: Start difference. First operand has 187 places, 190 transitions, 2400 flow. Second operand 9 states and 252 transitions. [2024-06-27 22:55:18,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 223 transitions, 3064 flow [2024-06-27 22:55:19,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 223 transitions, 2927 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-27 22:55:19,254 INFO L231 Difference]: Finished difference. Result has 188 places, 192 transitions, 2448 flow [2024-06-27 22:55:19,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2263, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2448, PETRI_PLACES=188, PETRI_TRANSITIONS=192} [2024-06-27 22:55:19,254 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 134 predicate places. [2024-06-27 22:55:19,254 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 192 transitions, 2448 flow [2024-06-27 22:55:19,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.875) internal successors, (175), 8 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:19,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:55:19,255 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:55:19,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 22:55:19,255 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:55:19,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:55:19,255 INFO L85 PathProgramCache]: Analyzing trace with hash 249690679, now seen corresponding path program 8 times [2024-06-27 22:55:19,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:55:19,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021885809] [2024-06-27 22:55:19,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:55:19,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:55:19,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:55:19,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:55:19,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:55:19,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021885809] [2024-06-27 22:55:19,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021885809] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:55:19,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:55:19,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:55:19,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248968166] [2024-06-27 22:55:19,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:55:19,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:55:19,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:55:19,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:55:19,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:55:19,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2024-06-27 22:55:19,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 192 transitions, 2448 flow. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:19,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:55:19,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2024-06-27 22:55:19,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:55:20,587 INFO L124 PetriNetUnfolderBase]: 2683/5537 cut-off events. [2024-06-27 22:55:20,587 INFO L125 PetriNetUnfolderBase]: For 102259/102426 co-relation queries the response was YES. [2024-06-27 22:55:20,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27625 conditions, 5537 events. 2683/5537 cut-off events. For 102259/102426 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 47222 event pairs, 544 based on Foata normal form. 26/5176 useless extension candidates. Maximal degree in co-relation 27537. Up to 2763 conditions per place. [2024-06-27 22:55:20,651 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 129 selfloop transitions, 66 changer transitions 0/220 dead transitions. [2024-06-27 22:55:20,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 220 transitions, 3216 flow [2024-06-27 22:55:20,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:55:20,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:55:20,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 217 transitions. [2024-06-27 22:55:20,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6458333333333334 [2024-06-27 22:55:20,660 INFO L175 Difference]: Start difference. First operand has 188 places, 192 transitions, 2448 flow. Second operand 7 states and 217 transitions. [2024-06-27 22:55:20,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 220 transitions, 3216 flow [2024-06-27 22:55:20,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 220 transitions, 3051 flow, removed 43 selfloop flow, removed 6 redundant places. [2024-06-27 22:55:20,973 INFO L231 Difference]: Finished difference. Result has 189 places, 196 transitions, 2588 flow [2024-06-27 22:55:20,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2283, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2588, PETRI_PLACES=189, PETRI_TRANSITIONS=196} [2024-06-27 22:55:20,974 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 135 predicate places. [2024-06-27 22:55:20,974 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 196 transitions, 2588 flow [2024-06-27 22:55:20,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:20,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:55:20,975 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:55:20,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 22:55:20,975 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:55:20,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:55:20,975 INFO L85 PathProgramCache]: Analyzing trace with hash -892244733, now seen corresponding path program 9 times [2024-06-27 22:55:20,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:55:20,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138744120] [2024-06-27 22:55:20,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:55:20,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:55:20,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:55:21,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:55:21,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:55:21,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138744120] [2024-06-27 22:55:21,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138744120] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:55:21,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:55:21,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:55:21,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195727680] [2024-06-27 22:55:21,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:55:21,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:55:21,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:55:21,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:55:21,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:55:21,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2024-06-27 22:55:21,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 196 transitions, 2588 flow. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:21,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:55:21,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2024-06-27 22:55:21,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:55:22,272 INFO L124 PetriNetUnfolderBase]: 2672/5528 cut-off events. [2024-06-27 22:55:22,272 INFO L125 PetriNetUnfolderBase]: For 98642/98807 co-relation queries the response was YES. [2024-06-27 22:55:22,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27172 conditions, 5528 events. 2672/5528 cut-off events. For 98642/98807 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 47219 event pairs, 526 based on Foata normal form. 26/5170 useless extension candidates. Maximal degree in co-relation 27084. Up to 2755 conditions per place. [2024-06-27 22:55:22,331 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 130 selfloop transitions, 64 changer transitions 0/219 dead transitions. [2024-06-27 22:55:22,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 219 transitions, 3120 flow [2024-06-27 22:55:22,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:55:22,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:55:22,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 216 transitions. [2024-06-27 22:55:22,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6428571428571429 [2024-06-27 22:55:22,335 INFO L175 Difference]: Start difference. First operand has 189 places, 196 transitions, 2588 flow. Second operand 7 states and 216 transitions. [2024-06-27 22:55:22,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 219 transitions, 3120 flow [2024-06-27 22:55:22,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 219 transitions, 2903 flow, removed 74 selfloop flow, removed 3 redundant places. [2024-06-27 22:55:22,755 INFO L231 Difference]: Finished difference. Result has 193 places, 196 transitions, 2504 flow [2024-06-27 22:55:22,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2371, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2504, PETRI_PLACES=193, PETRI_TRANSITIONS=196} [2024-06-27 22:55:22,756 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 139 predicate places. [2024-06-27 22:55:22,756 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 196 transitions, 2504 flow [2024-06-27 22:55:22,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:22,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:55:22,757 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:55:22,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 22:55:22,757 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:55:22,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:55:22,757 INFO L85 PathProgramCache]: Analyzing trace with hash 113705859, now seen corresponding path program 4 times [2024-06-27 22:55:22,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:55:22,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720069558] [2024-06-27 22:55:22,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:55:22,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:55:22,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:55:23,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:55:23,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:55:23,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720069558] [2024-06-27 22:55:23,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720069558] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:55:23,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:55:23,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:55:23,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121537432] [2024-06-27 22:55:23,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:55:23,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:55:23,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:55:23,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:55:23,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:55:23,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2024-06-27 22:55:23,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 196 transitions, 2504 flow. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:23,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:55:23,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2024-06-27 22:55:23,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:55:23,991 INFO L124 PetriNetUnfolderBase]: 2723/5596 cut-off events. [2024-06-27 22:55:23,991 INFO L125 PetriNetUnfolderBase]: For 86307/86474 co-relation queries the response was YES. [2024-06-27 22:55:24,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26987 conditions, 5596 events. 2723/5596 cut-off events. For 86307/86474 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 47700 event pairs, 831 based on Foata normal form. 28/5150 useless extension candidates. Maximal degree in co-relation 26897. Up to 3638 conditions per place. [2024-06-27 22:55:24,054 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 166 selfloop transitions, 32 changer transitions 0/223 dead transitions. [2024-06-27 22:55:24,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 223 transitions, 3054 flow [2024-06-27 22:55:24,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:55:24,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:55:24,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 218 transitions. [2024-06-27 22:55:24,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6488095238095238 [2024-06-27 22:55:24,056 INFO L175 Difference]: Start difference. First operand has 193 places, 196 transitions, 2504 flow. Second operand 7 states and 218 transitions. [2024-06-27 22:55:24,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 223 transitions, 3054 flow [2024-06-27 22:55:24,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 223 transitions, 2872 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-27 22:55:24,282 INFO L231 Difference]: Finished difference. Result has 193 places, 197 transitions, 2427 flow [2024-06-27 22:55:24,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2322, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2427, PETRI_PLACES=193, PETRI_TRANSITIONS=197} [2024-06-27 22:55:24,283 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 139 predicate places. [2024-06-27 22:55:24,283 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 197 transitions, 2427 flow [2024-06-27 22:55:24,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:24,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:55:24,283 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:55:24,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 22:55:24,284 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:55:24,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:55:24,284 INFO L85 PathProgramCache]: Analyzing trace with hash -892236797, now seen corresponding path program 5 times [2024-06-27 22:55:24,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:55:24,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840072677] [2024-06-27 22:55:24,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:55:24,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:55:24,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:55:24,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:55:24,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:55:24,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840072677] [2024-06-27 22:55:24,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840072677] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:55:24,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:55:24,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:55:24,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43500285] [2024-06-27 22:55:24,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:55:24,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:55:24,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:55:24,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:55:24,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:55:24,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2024-06-27 22:55:24,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 197 transitions, 2427 flow. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:24,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:55:24,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2024-06-27 22:55:24,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:55:25,568 INFO L124 PetriNetUnfolderBase]: 2804/5790 cut-off events. [2024-06-27 22:55:25,568 INFO L125 PetriNetUnfolderBase]: For 93307/93489 co-relation queries the response was YES. [2024-06-27 22:55:25,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27674 conditions, 5790 events. 2804/5790 cut-off events. For 93307/93489 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 49509 event pairs, 807 based on Foata normal form. 28/5331 useless extension candidates. Maximal degree in co-relation 27584. Up to 3713 conditions per place. [2024-06-27 22:55:25,634 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 155 selfloop transitions, 42 changer transitions 0/222 dead transitions. [2024-06-27 22:55:25,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 222 transitions, 2971 flow [2024-06-27 22:55:25,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:55:25,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:55:25,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 216 transitions. [2024-06-27 22:55:25,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6428571428571429 [2024-06-27 22:55:25,637 INFO L175 Difference]: Start difference. First operand has 193 places, 197 transitions, 2427 flow. Second operand 7 states and 216 transitions. [2024-06-27 22:55:25,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 222 transitions, 2971 flow [2024-06-27 22:55:25,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 222 transitions, 2894 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-27 22:55:25,880 INFO L231 Difference]: Finished difference. Result has 195 places, 198 transitions, 2476 flow [2024-06-27 22:55:25,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2350, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2476, PETRI_PLACES=195, PETRI_TRANSITIONS=198} [2024-06-27 22:55:25,881 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 141 predicate places. [2024-06-27 22:55:25,881 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 198 transitions, 2476 flow [2024-06-27 22:55:25,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:25,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:55:25,882 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:55:25,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 22:55:25,882 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:55:25,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:55:25,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1779254405, now seen corresponding path program 6 times [2024-06-27 22:55:25,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:55:25,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408954400] [2024-06-27 22:55:25,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:55:25,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:55:25,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:55:26,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:55:26,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:55:26,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408954400] [2024-06-27 22:55:26,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408954400] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:55:26,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:55:26,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:55:26,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498640682] [2024-06-27 22:55:26,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:55:26,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:55:26,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:55:26,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:55:26,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:55:26,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2024-06-27 22:55:26,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 198 transitions, 2476 flow. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:26,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:55:26,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2024-06-27 22:55:26,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:55:27,191 INFO L124 PetriNetUnfolderBase]: 2890/5988 cut-off events. [2024-06-27 22:55:27,191 INFO L125 PetriNetUnfolderBase]: For 99593/99783 co-relation queries the response was YES. [2024-06-27 22:55:27,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28838 conditions, 5988 events. 2890/5988 cut-off events. For 99593/99783 co-relation queries the response was YES. Maximal size of possible extension queue 496. Compared 51827 event pairs, 809 based on Foata normal form. 28/5519 useless extension candidates. Maximal degree in co-relation 28747. Up to 3480 conditions per place. [2024-06-27 22:55:27,265 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 153 selfloop transitions, 59 changer transitions 0/237 dead transitions. [2024-06-27 22:55:27,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 237 transitions, 3338 flow [2024-06-27 22:55:27,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:55:27,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:55:27,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 221 transitions. [2024-06-27 22:55:27,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6577380952380952 [2024-06-27 22:55:27,267 INFO L175 Difference]: Start difference. First operand has 195 places, 198 transitions, 2476 flow. Second operand 7 states and 221 transitions. [2024-06-27 22:55:27,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 237 transitions, 3338 flow [2024-06-27 22:55:27,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 237 transitions, 3238 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-27 22:55:27,549 INFO L231 Difference]: Finished difference. Result has 200 places, 207 transitions, 2858 flow [2024-06-27 22:55:27,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2376, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2858, PETRI_PLACES=200, PETRI_TRANSITIONS=207} [2024-06-27 22:55:27,550 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 146 predicate places. [2024-06-27 22:55:27,550 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 207 transitions, 2858 flow [2024-06-27 22:55:27,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:27,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:55:27,550 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:55:27,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 22:55:27,550 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:55:27,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:55:27,551 INFO L85 PathProgramCache]: Analyzing trace with hash 830611909, now seen corresponding path program 10 times [2024-06-27 22:55:27,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:55:27,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531816360] [2024-06-27 22:55:27,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:55:27,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:55:27,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:55:28,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:55:28,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:55:28,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531816360] [2024-06-27 22:55:28,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531816360] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:55:28,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:55:28,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:55:28,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795942397] [2024-06-27 22:55:28,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:55:28,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:55:28,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:55:28,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:55:28,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:55:28,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2024-06-27 22:55:28,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 207 transitions, 2858 flow. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:28,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:55:28,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2024-06-27 22:55:28,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:55:28,990 INFO L124 PetriNetUnfolderBase]: 3006/6158 cut-off events. [2024-06-27 22:55:28,991 INFO L125 PetriNetUnfolderBase]: For 122320/122495 co-relation queries the response was YES. [2024-06-27 22:55:29,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31499 conditions, 6158 events. 3006/6158 cut-off events. For 122320/122495 co-relation queries the response was YES. Maximal size of possible extension queue 513. Compared 53440 event pairs, 774 based on Foata normal form. 27/5717 useless extension candidates. Maximal degree in co-relation 31404. Up to 2970 conditions per place. [2024-06-27 22:55:29,069 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 127 selfloop transitions, 84 changer transitions 0/236 dead transitions. [2024-06-27 22:55:29,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 236 transitions, 3838 flow [2024-06-27 22:55:29,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:55:29,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:55:29,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 218 transitions. [2024-06-27 22:55:29,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6488095238095238 [2024-06-27 22:55:29,073 INFO L175 Difference]: Start difference. First operand has 200 places, 207 transitions, 2858 flow. Second operand 7 states and 218 transitions. [2024-06-27 22:55:29,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 236 transitions, 3838 flow [2024-06-27 22:55:29,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 236 transitions, 3711 flow, removed 58 selfloop flow, removed 1 redundant places. [2024-06-27 22:55:29,419 INFO L231 Difference]: Finished difference. Result has 206 places, 213 transitions, 3160 flow [2024-06-27 22:55:29,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2731, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3160, PETRI_PLACES=206, PETRI_TRANSITIONS=213} [2024-06-27 22:55:29,420 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 152 predicate places. [2024-06-27 22:55:29,420 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 213 transitions, 3160 flow [2024-06-27 22:55:29,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:29,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:55:29,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:55:29,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 22:55:29,421 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:55:29,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:55:29,421 INFO L85 PathProgramCache]: Analyzing trace with hash 483959237, now seen corresponding path program 11 times [2024-06-27 22:55:29,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:55:29,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292952908] [2024-06-27 22:55:29,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:55:29,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:55:29,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:55:29,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:55:29,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:55:29,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292952908] [2024-06-27 22:55:29,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292952908] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:55:29,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:55:29,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:55:29,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508173743] [2024-06-27 22:55:29,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:55:29,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:55:29,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:55:29,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:55:29,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:55:29,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2024-06-27 22:55:29,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 213 transitions, 3160 flow. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:29,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:55:29,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2024-06-27 22:55:29,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:55:30,801 INFO L124 PetriNetUnfolderBase]: 2992/6135 cut-off events. [2024-06-27 22:55:30,802 INFO L125 PetriNetUnfolderBase]: For 119213/119381 co-relation queries the response was YES. [2024-06-27 22:55:30,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31456 conditions, 6135 events. 2992/6135 cut-off events. For 119213/119381 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 53283 event pairs, 754 based on Foata normal form. 28/5704 useless extension candidates. Maximal degree in co-relation 31359. Up to 2964 conditions per place. [2024-06-27 22:55:30,871 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 123 selfloop transitions, 86 changer transitions 0/234 dead transitions. [2024-06-27 22:55:30,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 234 transitions, 3804 flow [2024-06-27 22:55:30,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:55:30,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:55:30,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 216 transitions. [2024-06-27 22:55:30,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6428571428571429 [2024-06-27 22:55:30,880 INFO L175 Difference]: Start difference. First operand has 206 places, 213 transitions, 3160 flow. Second operand 7 states and 216 transitions. [2024-06-27 22:55:30,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 234 transitions, 3804 flow [2024-06-27 22:55:31,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 234 transitions, 3529 flow, removed 92 selfloop flow, removed 3 redundant places. [2024-06-27 22:55:31,268 INFO L231 Difference]: Finished difference. Result has 210 places, 213 transitions, 3062 flow [2024-06-27 22:55:31,268 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2885, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3062, PETRI_PLACES=210, PETRI_TRANSITIONS=213} [2024-06-27 22:55:31,269 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 156 predicate places. [2024-06-27 22:55:31,269 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 213 transitions, 3062 flow [2024-06-27 22:55:31,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:31,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:55:31,269 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:55:31,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 22:55:31,269 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:55:31,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:55:31,270 INFO L85 PathProgramCache]: Analyzing trace with hash 690236425, now seen corresponding path program 12 times [2024-06-27 22:55:31,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:55:31,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012080203] [2024-06-27 22:55:31,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:55:31,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:55:31,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:55:31,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:55:31,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:55:31,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012080203] [2024-06-27 22:55:31,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012080203] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:55:31,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:55:31,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:55:31,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917701420] [2024-06-27 22:55:31,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:55:31,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:55:31,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:55:31,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:55:31,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:55:31,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2024-06-27 22:55:31,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 213 transitions, 3062 flow. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:31,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:55:31,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2024-06-27 22:55:31,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:55:32,707 INFO L124 PetriNetUnfolderBase]: 2984/6142 cut-off events. [2024-06-27 22:55:32,708 INFO L125 PetriNetUnfolderBase]: For 94789/94981 co-relation queries the response was YES. [2024-06-27 22:55:32,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30115 conditions, 6142 events. 2984/6142 cut-off events. For 94789/94981 co-relation queries the response was YES. Maximal size of possible extension queue 508. Compared 53252 event pairs, 968 based on Foata normal form. 30/5650 useless extension candidates. Maximal degree in co-relation 30017. Up to 4132 conditions per place. [2024-06-27 22:55:32,766 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 185 selfloop transitions, 22 changer transitions 0/232 dead transitions. [2024-06-27 22:55:32,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 232 transitions, 3540 flow [2024-06-27 22:55:32,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:55:32,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:55:32,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 211 transitions. [2024-06-27 22:55:32,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6279761904761905 [2024-06-27 22:55:32,768 INFO L175 Difference]: Start difference. First operand has 210 places, 213 transitions, 3062 flow. Second operand 7 states and 211 transitions. [2024-06-27 22:55:32,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 232 transitions, 3540 flow [2024-06-27 22:55:33,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 232 transitions, 3327 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-06-27 22:55:33,070 INFO L231 Difference]: Finished difference. Result has 212 places, 213 transitions, 2898 flow [2024-06-27 22:55:33,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2849, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2898, PETRI_PLACES=212, PETRI_TRANSITIONS=213} [2024-06-27 22:55:33,071 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 158 predicate places. [2024-06-27 22:55:33,071 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 213 transitions, 2898 flow [2024-06-27 22:55:33,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:33,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:55:33,072 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:55:33,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 22:55:33,072 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:55:33,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:55:33,072 INFO L85 PathProgramCache]: Analyzing trace with hash -773997721, now seen corresponding path program 7 times [2024-06-27 22:55:33,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:55:33,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149683874] [2024-06-27 22:55:33,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:55:33,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:55:33,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:55:33,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:55:33,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:55:33,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149683874] [2024-06-27 22:55:33,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149683874] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:55:33,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:55:33,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:55:33,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510740682] [2024-06-27 22:55:33,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:55:33,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:55:33,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:55:33,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:55:33,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:55:33,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2024-06-27 22:55:33,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 213 transitions, 2898 flow. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:33,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:55:33,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2024-06-27 22:55:33,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:55:34,577 INFO L124 PetriNetUnfolderBase]: 3141/6462 cut-off events. [2024-06-27 22:55:34,577 INFO L125 PetriNetUnfolderBase]: For 109450/109642 co-relation queries the response was YES. [2024-06-27 22:55:34,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31817 conditions, 6462 events. 3141/6462 cut-off events. For 109450/109642 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 56308 event pairs, 921 based on Foata normal form. 29/5936 useless extension candidates. Maximal degree in co-relation 31718. Up to 3877 conditions per place. [2024-06-27 22:55:34,649 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 145 selfloop transitions, 73 changer transitions 0/243 dead transitions. [2024-06-27 22:55:34,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 243 transitions, 3650 flow [2024-06-27 22:55:34,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:55:34,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:55:34,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 221 transitions. [2024-06-27 22:55:34,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6577380952380952 [2024-06-27 22:55:34,650 INFO L175 Difference]: Start difference. First operand has 212 places, 213 transitions, 2898 flow. Second operand 7 states and 221 transitions. [2024-06-27 22:55:34,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 243 transitions, 3650 flow [2024-06-27 22:55:34,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 243 transitions, 3572 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-27 22:55:34,971 INFO L231 Difference]: Finished difference. Result has 212 places, 215 transitions, 3052 flow [2024-06-27 22:55:34,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2820, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3052, PETRI_PLACES=212, PETRI_TRANSITIONS=215} [2024-06-27 22:55:34,971 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 158 predicate places. [2024-06-27 22:55:34,971 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 215 transitions, 3052 flow [2024-06-27 22:55:34,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:34,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:55:34,972 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:55:34,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 22:55:34,972 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:55:34,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:55:34,972 INFO L85 PathProgramCache]: Analyzing trace with hash 830619845, now seen corresponding path program 8 times [2024-06-27 22:55:34,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:55:34,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791803480] [2024-06-27 22:55:34,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:55:34,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:55:34,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:55:35,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:55:35,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:55:35,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791803480] [2024-06-27 22:55:35,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791803480] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:55:35,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:55:35,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:55:35,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757830420] [2024-06-27 22:55:35,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:55:35,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:55:35,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:55:35,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:55:35,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:55:35,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2024-06-27 22:55:35,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 215 transitions, 3052 flow. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:35,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:55:35,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2024-06-27 22:55:35,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:55:36,364 INFO L124 PetriNetUnfolderBase]: 3214/6635 cut-off events. [2024-06-27 22:55:36,380 INFO L125 PetriNetUnfolderBase]: For 122147/122340 co-relation queries the response was YES. [2024-06-27 22:55:36,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33424 conditions, 6635 events. 3214/6635 cut-off events. For 122147/122340 co-relation queries the response was YES. Maximal size of possible extension queue 548. Compared 58175 event pairs, 972 based on Foata normal form. 30/6079 useless extension candidates. Maximal degree in co-relation 33324. Up to 4167 conditions per place. [2024-06-27 22:55:36,524 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 146 selfloop transitions, 69 changer transitions 0/240 dead transitions. [2024-06-27 22:55:36,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 240 transitions, 3632 flow [2024-06-27 22:55:36,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:55:36,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:55:36,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 218 transitions. [2024-06-27 22:55:36,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6488095238095238 [2024-06-27 22:55:36,525 INFO L175 Difference]: Start difference. First operand has 212 places, 215 transitions, 3052 flow. Second operand 7 states and 218 transitions. [2024-06-27 22:55:36,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 240 transitions, 3632 flow [2024-06-27 22:55:36,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 240 transitions, 3491 flow, removed 28 selfloop flow, removed 3 redundant places. [2024-06-27 22:55:36,954 INFO L231 Difference]: Finished difference. Result has 216 places, 216 transitions, 3097 flow [2024-06-27 22:55:36,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2917, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3097, PETRI_PLACES=216, PETRI_TRANSITIONS=216} [2024-06-27 22:55:36,955 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 162 predicate places. [2024-06-27 22:55:36,955 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 216 transitions, 3097 flow [2024-06-27 22:55:36,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:36,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:55:36,955 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:55:36,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 22:55:36,956 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:55:36,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:55:36,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1165283131, now seen corresponding path program 9 times [2024-06-27 22:55:36,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:55:36,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724934628] [2024-06-27 22:55:36,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:55:36,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:55:36,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:55:37,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:55:37,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:55:37,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724934628] [2024-06-27 22:55:37,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724934628] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:55:37,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:55:37,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:55:37,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140993718] [2024-06-27 22:55:37,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:55:37,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:55:37,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:55:37,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:55:37,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:55:37,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2024-06-27 22:55:37,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 216 transitions, 3097 flow. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:37,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:55:37,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2024-06-27 22:55:37,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:55:38,636 INFO L124 PetriNetUnfolderBase]: 3310/6834 cut-off events. [2024-06-27 22:55:38,636 INFO L125 PetriNetUnfolderBase]: For 119987/120200 co-relation queries the response was YES. [2024-06-27 22:55:38,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34046 conditions, 6834 events. 3310/6834 cut-off events. For 119987/120200 co-relation queries the response was YES. Maximal size of possible extension queue 566. Compared 60492 event pairs, 1067 based on Foata normal form. 33/6281 useless extension candidates. Maximal degree in co-relation 33945. Up to 4392 conditions per place. [2024-06-27 22:55:38,721 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 195 selfloop transitions, 28 changer transitions 0/248 dead transitions. [2024-06-27 22:55:38,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 248 transitions, 3840 flow [2024-06-27 22:55:38,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:55:38,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:55:38,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 245 transitions. [2024-06-27 22:55:38,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6380208333333334 [2024-06-27 22:55:38,722 INFO L175 Difference]: Start difference. First operand has 216 places, 216 transitions, 3097 flow. Second operand 8 states and 245 transitions. [2024-06-27 22:55:38,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 248 transitions, 3840 flow [2024-06-27 22:55:39,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 248 transitions, 3686 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-27 22:55:39,139 INFO L231 Difference]: Finished difference. Result has 220 places, 218 transitions, 3060 flow [2024-06-27 22:55:39,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2943, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3060, PETRI_PLACES=220, PETRI_TRANSITIONS=218} [2024-06-27 22:55:39,140 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 166 predicate places. [2024-06-27 22:55:39,140 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 218 transitions, 3060 flow [2024-06-27 22:55:39,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:39,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:55:39,140 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:55:39,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 22:55:39,141 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:55:39,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:55:39,141 INFO L85 PathProgramCache]: Analyzing trace with hash 690244361, now seen corresponding path program 10 times [2024-06-27 22:55:39,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:55:39,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798874418] [2024-06-27 22:55:39,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:55:39,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:55:39,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:55:39,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:55:39,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:55:39,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798874418] [2024-06-27 22:55:39,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798874418] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:55:39,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:55:39,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:55:39,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70548101] [2024-06-27 22:55:39,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:55:39,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:55:39,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:55:39,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:55:39,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:55:39,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2024-06-27 22:55:39,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 218 transitions, 3060 flow. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:39,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:55:39,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2024-06-27 22:55:39,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:55:40,729 INFO L124 PetriNetUnfolderBase]: 3310/6838 cut-off events. [2024-06-27 22:55:40,729 INFO L125 PetriNetUnfolderBase]: For 115259/115471 co-relation queries the response was YES. [2024-06-27 22:55:40,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33647 conditions, 6838 events. 3310/6838 cut-off events. For 115259/115471 co-relation queries the response was YES. Maximal size of possible extension queue 564. Compared 60528 event pairs, 1133 based on Foata normal form. 33/6271 useless extension candidates. Maximal degree in co-relation 33544. Up to 4561 conditions per place. [2024-06-27 22:55:40,814 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 190 selfloop transitions, 26 changer transitions 0/241 dead transitions. [2024-06-27 22:55:40,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 241 transitions, 3598 flow [2024-06-27 22:55:40,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:55:40,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:55:40,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 214 transitions. [2024-06-27 22:55:40,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6369047619047619 [2024-06-27 22:55:40,816 INFO L175 Difference]: Start difference. First operand has 220 places, 218 transitions, 3060 flow. Second operand 7 states and 214 transitions. [2024-06-27 22:55:40,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 241 transitions, 3598 flow [2024-06-27 22:55:41,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 241 transitions, 3498 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-27 22:55:41,254 INFO L231 Difference]: Finished difference. Result has 222 places, 218 transitions, 3016 flow [2024-06-27 22:55:41,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2960, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3016, PETRI_PLACES=222, PETRI_TRANSITIONS=218} [2024-06-27 22:55:41,255 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 168 predicate places. [2024-06-27 22:55:41,255 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 218 transitions, 3016 flow [2024-06-27 22:55:41,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:41,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:55:41,255 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:55:41,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 22:55:41,255 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:55:41,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:55:41,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1125959687, now seen corresponding path program 11 times [2024-06-27 22:55:41,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:55:41,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616546323] [2024-06-27 22:55:41,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:55:41,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:55:41,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:55:41,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:55:41,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:55:41,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616546323] [2024-06-27 22:55:41,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616546323] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:55:41,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:55:41,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:55:41,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949069073] [2024-06-27 22:55:41,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:55:41,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:55:41,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:55:41,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:55:41,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:55:41,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2024-06-27 22:55:41,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 218 transitions, 3016 flow. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:41,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:55:41,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2024-06-27 22:55:41,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:55:42,805 INFO L124 PetriNetUnfolderBase]: 3415/7085 cut-off events. [2024-06-27 22:55:42,805 INFO L125 PetriNetUnfolderBase]: For 117219/117433 co-relation queries the response was YES. [2024-06-27 22:55:42,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34470 conditions, 7085 events. 3415/7085 cut-off events. For 117219/117433 co-relation queries the response was YES. Maximal size of possible extension queue 585. Compared 63346 event pairs, 783 based on Foata normal form. 30/6532 useless extension candidates. Maximal degree in co-relation 34366. Up to 3188 conditions per place. [2024-06-27 22:55:42,886 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 138 selfloop transitions, 87 changer transitions 0/250 dead transitions. [2024-06-27 22:55:42,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 250 transitions, 3836 flow [2024-06-27 22:55:42,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:55:42,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:55:42,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 222 transitions. [2024-06-27 22:55:42,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6607142857142857 [2024-06-27 22:55:42,888 INFO L175 Difference]: Start difference. First operand has 222 places, 218 transitions, 3016 flow. Second operand 7 states and 222 transitions. [2024-06-27 22:55:42,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 250 transitions, 3836 flow [2024-06-27 22:55:43,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 250 transitions, 3786 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-27 22:55:43,305 INFO L231 Difference]: Finished difference. Result has 224 places, 220 transitions, 3234 flow [2024-06-27 22:55:43,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2966, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3234, PETRI_PLACES=224, PETRI_TRANSITIONS=220} [2024-06-27 22:55:43,306 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 170 predicate places. [2024-06-27 22:55:43,306 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 220 transitions, 3234 flow [2024-06-27 22:55:43,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:43,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:55:43,306 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:55:43,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 22:55:43,306 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:55:43,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:55:43,307 INFO L85 PathProgramCache]: Analyzing trace with hash 184168645, now seen corresponding path program 12 times [2024-06-27 22:55:43,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:55:43,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256278339] [2024-06-27 22:55:43,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:55:43,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:55:43,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:55:43,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:55:43,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:55:43,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256278339] [2024-06-27 22:55:43,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256278339] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:55:43,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:55:43,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:55:43,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884304036] [2024-06-27 22:55:43,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:55:43,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:55:43,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:55:43,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:55:43,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:55:43,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2024-06-27 22:55:43,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 220 transitions, 3234 flow. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:43,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:55:43,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2024-06-27 22:55:43,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:55:44,816 INFO L124 PetriNetUnfolderBase]: 3376/6985 cut-off events. [2024-06-27 22:55:44,817 INFO L125 PetriNetUnfolderBase]: For 119453/119672 co-relation queries the response was YES. [2024-06-27 22:55:44,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34784 conditions, 6985 events. 3376/6985 cut-off events. For 119453/119672 co-relation queries the response was YES. Maximal size of possible extension queue 573. Compared 62042 event pairs, 1012 based on Foata normal form. 33/6441 useless extension candidates. Maximal degree in co-relation 34679. Up to 4408 conditions per place. [2024-06-27 22:55:44,891 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 197 selfloop transitions, 27 changer transitions 0/249 dead transitions. [2024-06-27 22:55:44,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 249 transitions, 3868 flow [2024-06-27 22:55:44,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:55:44,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:55:44,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 217 transitions. [2024-06-27 22:55:44,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6458333333333334 [2024-06-27 22:55:44,893 INFO L175 Difference]: Start difference. First operand has 224 places, 220 transitions, 3234 flow. Second operand 7 states and 217 transitions. [2024-06-27 22:55:44,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 249 transitions, 3868 flow [2024-06-27 22:55:45,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 249 transitions, 3619 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-06-27 22:55:45,382 INFO L231 Difference]: Finished difference. Result has 226 places, 220 transitions, 3043 flow [2024-06-27 22:55:45,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2985, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3043, PETRI_PLACES=226, PETRI_TRANSITIONS=220} [2024-06-27 22:55:45,383 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 172 predicate places. [2024-06-27 22:55:45,383 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 220 transitions, 3043 flow [2024-06-27 22:55:45,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:45,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:55:45,383 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:55:45,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 22:55:45,384 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:55:45,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:55:45,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1206122783, now seen corresponding path program 13 times [2024-06-27 22:55:45,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:55:45,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103380460] [2024-06-27 22:55:45,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:55:45,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:55:45,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:55:45,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:55:45,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:55:45,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103380460] [2024-06-27 22:55:45,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103380460] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:55:45,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:55:45,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:55:45,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921614866] [2024-06-27 22:55:45,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:55:45,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:55:45,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:55:45,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:55:45,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:55:45,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 48 [2024-06-27 22:55:45,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 220 transitions, 3043 flow. Second operand has 8 states, 8 states have (on average 21.875) internal successors, (175), 8 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:45,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:55:45,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 48 [2024-06-27 22:55:45,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:55:47,002 INFO L124 PetriNetUnfolderBase]: 3820/7810 cut-off events. [2024-06-27 22:55:47,003 INFO L125 PetriNetUnfolderBase]: For 104730/105021 co-relation queries the response was YES. [2024-06-27 22:55:47,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36930 conditions, 7810 events. 3820/7810 cut-off events. For 104730/105021 co-relation queries the response was YES. Maximal size of possible extension queue 600. Compared 69349 event pairs, 1079 based on Foata normal form. 23/7255 useless extension candidates. Maximal degree in co-relation 36824. Up to 4979 conditions per place. [2024-06-27 22:55:47,092 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 191 selfloop transitions, 36 changer transitions 0/248 dead transitions. [2024-06-27 22:55:47,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 248 transitions, 3603 flow [2024-06-27 22:55:47,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:55:47,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:55:47,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 227 transitions. [2024-06-27 22:55:47,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5911458333333334 [2024-06-27 22:55:47,095 INFO L175 Difference]: Start difference. First operand has 226 places, 220 transitions, 3043 flow. Second operand 8 states and 227 transitions. [2024-06-27 22:55:47,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 248 transitions, 3603 flow [2024-06-27 22:55:47,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 248 transitions, 3465 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-27 22:55:47,590 INFO L231 Difference]: Finished difference. Result has 227 places, 220 transitions, 2989 flow [2024-06-27 22:55:47,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2905, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2989, PETRI_PLACES=227, PETRI_TRANSITIONS=220} [2024-06-27 22:55:47,591 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 173 predicate places. [2024-06-27 22:55:47,591 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 220 transitions, 2989 flow [2024-06-27 22:55:47,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.875) internal successors, (175), 8 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:47,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:55:47,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:55:47,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 22:55:47,592 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:55:47,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:55:47,592 INFO L85 PathProgramCache]: Analyzing trace with hash -2008269944, now seen corresponding path program 1 times [2024-06-27 22:55:47,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:55:47,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542212055] [2024-06-27 22:55:47,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:55:47,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:55:47,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:55:48,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:55:48,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:55:48,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542212055] [2024-06-27 22:55:48,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542212055] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:55:48,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:55:48,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:55:48,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911306258] [2024-06-27 22:55:48,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:55:48,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:55:48,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:55:48,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:55:48,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:55:48,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 48 [2024-06-27 22:55:48,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 220 transitions, 2989 flow. Second operand has 8 states, 8 states have (on average 22.0) internal successors, (176), 8 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:48,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:55:48,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 48 [2024-06-27 22:55:48,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:55:49,719 INFO L124 PetriNetUnfolderBase]: 4177/8529 cut-off events. [2024-06-27 22:55:49,719 INFO L125 PetriNetUnfolderBase]: For 122320/122630 co-relation queries the response was YES. [2024-06-27 22:55:49,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39817 conditions, 8529 events. 4177/8529 cut-off events. For 122320/122630 co-relation queries the response was YES. Maximal size of possible extension queue 649. Compared 77014 event pairs, 1156 based on Foata normal form. 29/7939 useless extension candidates. Maximal degree in co-relation 39711. Up to 4795 conditions per place. [2024-06-27 22:55:49,830 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 192 selfloop transitions, 64 changer transitions 0/277 dead transitions. [2024-06-27 22:55:49,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 277 transitions, 4069 flow [2024-06-27 22:55:49,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:55:49,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:55:49,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 264 transitions. [2024-06-27 22:55:49,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2024-06-27 22:55:49,832 INFO L175 Difference]: Start difference. First operand has 227 places, 220 transitions, 2989 flow. Second operand 9 states and 264 transitions. [2024-06-27 22:55:49,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 277 transitions, 4069 flow [2024-06-27 22:55:50,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 277 transitions, 3945 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-27 22:55:50,330 INFO L231 Difference]: Finished difference. Result has 231 places, 240 transitions, 3508 flow [2024-06-27 22:55:50,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2883, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3508, PETRI_PLACES=231, PETRI_TRANSITIONS=240} [2024-06-27 22:55:50,331 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 177 predicate places. [2024-06-27 22:55:50,331 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 240 transitions, 3508 flow [2024-06-27 22:55:50,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.0) internal successors, (176), 8 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:50,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:55:50,331 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:55:50,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 22:55:50,332 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:55:50,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:55:50,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1698740280, now seen corresponding path program 2 times [2024-06-27 22:55:50,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:55:50,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106733351] [2024-06-27 22:55:50,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:55:50,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:55:50,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:55:51,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:55:51,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:55:51,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106733351] [2024-06-27 22:55:51,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106733351] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:55:51,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:55:51,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:55:51,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941838304] [2024-06-27 22:55:51,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:55:51,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:55:51,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:55:51,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:55:51,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:55:51,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2024-06-27 22:55:51,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 240 transitions, 3508 flow. Second operand has 8 states, 8 states have (on average 23.875) internal successors, (191), 8 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:51,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:55:51,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2024-06-27 22:55:51,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:55:52,443 INFO L124 PetriNetUnfolderBase]: 3927/8312 cut-off events. [2024-06-27 22:55:52,443 INFO L125 PetriNetUnfolderBase]: For 127199/127469 co-relation queries the response was YES. [2024-06-27 22:55:52,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38905 conditions, 8312 events. 3927/8312 cut-off events. For 127199/127469 co-relation queries the response was YES. Maximal size of possible extension queue 662. Compared 77373 event pairs, 1175 based on Foata normal form. 42/7676 useless extension candidates. Maximal degree in co-relation 38796. Up to 4714 conditions per place. [2024-06-27 22:55:52,549 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 192 selfloop transitions, 50 changer transitions 0/268 dead transitions. [2024-06-27 22:55:52,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 268 transitions, 4118 flow [2024-06-27 22:55:52,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:55:52,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:55:52,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 220 transitions. [2024-06-27 22:55:52,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6547619047619048 [2024-06-27 22:55:52,550 INFO L175 Difference]: Start difference. First operand has 231 places, 240 transitions, 3508 flow. Second operand 7 states and 220 transitions. [2024-06-27 22:55:52,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 268 transitions, 4118 flow [2024-06-27 22:55:53,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 268 transitions, 4026 flow, removed 26 selfloop flow, removed 3 redundant places. [2024-06-27 22:55:53,190 INFO L231 Difference]: Finished difference. Result has 235 places, 240 transitions, 3521 flow [2024-06-27 22:55:53,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3416, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3521, PETRI_PLACES=235, PETRI_TRANSITIONS=240} [2024-06-27 22:55:53,190 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 181 predicate places. [2024-06-27 22:55:53,190 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 240 transitions, 3521 flow [2024-06-27 22:55:53,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.875) internal successors, (191), 8 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:53,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:55:53,191 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:55:53,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 22:55:53,191 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:55:53,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:55:53,196 INFO L85 PathProgramCache]: Analyzing trace with hash 63701098, now seen corresponding path program 3 times [2024-06-27 22:55:53,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:55:53,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53072526] [2024-06-27 22:55:53,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:55:53,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:55:53,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:55:53,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:55:53,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:55:53,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53072526] [2024-06-27 22:55:53,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53072526] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:55:53,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:55:53,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:55:53,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422814676] [2024-06-27 22:55:53,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:55:53,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:55:53,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:55:53,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:55:53,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:55:53,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2024-06-27 22:55:53,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 240 transitions, 3521 flow. Second operand has 8 states, 8 states have (on average 23.875) internal successors, (191), 8 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:53,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:55:53,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2024-06-27 22:55:53,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:55:55,363 INFO L124 PetriNetUnfolderBase]: 4117/8728 cut-off events. [2024-06-27 22:55:55,364 INFO L125 PetriNetUnfolderBase]: For 122294/122590 co-relation queries the response was YES. [2024-06-27 22:55:55,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39827 conditions, 8728 events. 4117/8728 cut-off events. For 122294/122590 co-relation queries the response was YES. Maximal size of possible extension queue 699. Compared 82296 event pairs, 1193 based on Foata normal form. 40/8082 useless extension candidates. Maximal degree in co-relation 39718. Up to 4079 conditions per place. [2024-06-27 22:55:55,489 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 192 selfloop transitions, 54 changer transitions 0/272 dead transitions. [2024-06-27 22:55:55,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 272 transitions, 4194 flow [2024-06-27 22:55:55,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:55:55,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:55:55,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 222 transitions. [2024-06-27 22:55:55,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6607142857142857 [2024-06-27 22:55:55,490 INFO L175 Difference]: Start difference. First operand has 235 places, 240 transitions, 3521 flow. Second operand 7 states and 222 transitions. [2024-06-27 22:55:55,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 272 transitions, 4194 flow [2024-06-27 22:55:56,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 272 transitions, 4094 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-27 22:55:56,045 INFO L231 Difference]: Finished difference. Result has 237 places, 241 transitions, 3570 flow [2024-06-27 22:55:56,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3421, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3570, PETRI_PLACES=237, PETRI_TRANSITIONS=241} [2024-06-27 22:55:56,045 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 183 predicate places. [2024-06-27 22:55:56,046 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 241 transitions, 3570 flow [2024-06-27 22:55:56,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.875) internal successors, (191), 8 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:56,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:55:56,046 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:55:56,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 22:55:56,046 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:55:56,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:55:56,047 INFO L85 PathProgramCache]: Analyzing trace with hash 134456620, now seen corresponding path program 4 times [2024-06-27 22:55:56,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:55:56,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546482688] [2024-06-27 22:55:56,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:55:56,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:55:56,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:55:56,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:55:56,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:55:56,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546482688] [2024-06-27 22:55:56,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546482688] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:55:56,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:55:56,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:55:56,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88784990] [2024-06-27 22:55:56,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:55:56,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:55:56,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:55:56,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:55:56,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:55:56,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2024-06-27 22:55:56,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 241 transitions, 3570 flow. Second operand has 8 states, 8 states have (on average 23.875) internal successors, (191), 8 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:56,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:55:56,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2024-06-27 22:55:56,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:55:58,209 INFO L124 PetriNetUnfolderBase]: 4485/9685 cut-off events. [2024-06-27 22:55:58,209 INFO L125 PetriNetUnfolderBase]: For 161571/161911 co-relation queries the response was YES. [2024-06-27 22:55:58,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44321 conditions, 9685 events. 4485/9685 cut-off events. For 161571/161911 co-relation queries the response was YES. Maximal size of possible extension queue 762. Compared 93757 event pairs, 1384 based on Foata normal form. 40/8889 useless extension candidates. Maximal degree in co-relation 44210. Up to 4724 conditions per place. [2024-06-27 22:55:58,329 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 172 selfloop transitions, 85 changer transitions 0/283 dead transitions. [2024-06-27 22:55:58,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 283 transitions, 4482 flow [2024-06-27 22:55:58,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:55:58,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:55:58,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 258 transitions. [2024-06-27 22:55:58,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.671875 [2024-06-27 22:55:58,330 INFO L175 Difference]: Start difference. First operand has 237 places, 241 transitions, 3570 flow. Second operand 8 states and 258 transitions. [2024-06-27 22:55:58,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 283 transitions, 4482 flow [2024-06-27 22:55:59,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 283 transitions, 4391 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-27 22:55:59,188 INFO L231 Difference]: Finished difference. Result has 240 places, 243 transitions, 3761 flow [2024-06-27 22:55:59,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3479, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3761, PETRI_PLACES=240, PETRI_TRANSITIONS=243} [2024-06-27 22:55:59,188 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 186 predicate places. [2024-06-27 22:55:59,189 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 243 transitions, 3761 flow [2024-06-27 22:55:59,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.875) internal successors, (191), 8 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:59,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:55:59,189 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:55:59,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 22:55:59,189 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:55:59,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:55:59,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1995449804, now seen corresponding path program 5 times [2024-06-27 22:55:59,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:55:59,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861813743] [2024-06-27 22:55:59,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:55:59,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:55:59,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:55:59,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:55:59,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:55:59,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861813743] [2024-06-27 22:55:59,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861813743] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:55:59,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:55:59,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:55:59,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310775196] [2024-06-27 22:55:59,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:55:59,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:55:59,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:55:59,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:55:59,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:55:59,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2024-06-27 22:55:59,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 243 transitions, 3761 flow. Second operand has 8 states, 8 states have (on average 23.875) internal successors, (191), 8 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:59,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:55:59,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2024-06-27 22:55:59,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:56:01,430 INFO L124 PetriNetUnfolderBase]: 4498/9619 cut-off events. [2024-06-27 22:56:01,431 INFO L125 PetriNetUnfolderBase]: For 149913/150248 co-relation queries the response was YES. [2024-06-27 22:56:01,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43762 conditions, 9619 events. 4498/9619 cut-off events. For 149913/150248 co-relation queries the response was YES. Maximal size of possible extension queue 761. Compared 92666 event pairs, 1522 based on Foata normal form. 42/8824 useless extension candidates. Maximal degree in co-relation 43650. Up to 5481 conditions per place. [2024-06-27 22:56:01,561 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 185 selfloop transitions, 63 changer transitions 0/274 dead transitions. [2024-06-27 22:56:01,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 274 transitions, 4393 flow [2024-06-27 22:56:01,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:56:01,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:56:01,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 250 transitions. [2024-06-27 22:56:01,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6510416666666666 [2024-06-27 22:56:01,562 INFO L175 Difference]: Start difference. First operand has 240 places, 243 transitions, 3761 flow. Second operand 8 states and 250 transitions. [2024-06-27 22:56:01,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 274 transitions, 4393 flow [2024-06-27 22:56:02,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 274 transitions, 4289 flow, removed 30 selfloop flow, removed 4 redundant places. [2024-06-27 22:56:02,540 INFO L231 Difference]: Finished difference. Result has 244 places, 243 transitions, 3788 flow [2024-06-27 22:56:02,540 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3657, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3788, PETRI_PLACES=244, PETRI_TRANSITIONS=243} [2024-06-27 22:56:02,541 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 190 predicate places. [2024-06-27 22:56:02,541 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 243 transitions, 3788 flow [2024-06-27 22:56:02,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.875) internal successors, (191), 8 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:56:02,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:56:02,541 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:56:02,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 22:56:02,542 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:56:02,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:56:02,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1985551352, now seen corresponding path program 6 times [2024-06-27 22:56:02,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:56:02,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151058013] [2024-06-27 22:56:02,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:56:02,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:56:02,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:56:03,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:56:03,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:56:03,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151058013] [2024-06-27 22:56:03,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151058013] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:56:03,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:56:03,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:56:03,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767890285] [2024-06-27 22:56:03,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:56:03,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:56:03,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:56:03,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:56:03,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:56:03,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2024-06-27 22:56:03,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 243 transitions, 3788 flow. Second operand has 8 states, 8 states have (on average 23.875) internal successors, (191), 8 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:56:03,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:56:03,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2024-06-27 22:56:03,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:56:04,642 INFO L124 PetriNetUnfolderBase]: 4733/10174 cut-off events. [2024-06-27 22:56:04,642 INFO L125 PetriNetUnfolderBase]: For 147158/147504 co-relation queries the response was YES. [2024-06-27 22:56:04,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45463 conditions, 10174 events. 4733/10174 cut-off events. For 147158/147504 co-relation queries the response was YES. Maximal size of possible extension queue 796. Compared 99132 event pairs, 1453 based on Foata normal form. 40/9420 useless extension candidates. Maximal degree in co-relation 45350. Up to 3551 conditions per place. [2024-06-27 22:56:04,762 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 183 selfloop transitions, 73 changer transitions 0/282 dead transitions. [2024-06-27 22:56:04,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 282 transitions, 4550 flow [2024-06-27 22:56:04,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:56:04,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:56:04,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 254 transitions. [2024-06-27 22:56:04,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6614583333333334 [2024-06-27 22:56:04,763 INFO L175 Difference]: Start difference. First operand has 244 places, 243 transitions, 3788 flow. Second operand 8 states and 254 transitions. [2024-06-27 22:56:04,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 282 transitions, 4550 flow [2024-06-27 22:56:05,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 282 transitions, 4420 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-27 22:56:05,466 INFO L231 Difference]: Finished difference. Result has 246 places, 245 transitions, 3878 flow [2024-06-27 22:56:05,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3658, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3878, PETRI_PLACES=246, PETRI_TRANSITIONS=245} [2024-06-27 22:56:05,468 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 192 predicate places. [2024-06-27 22:56:05,468 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 245 transitions, 3878 flow [2024-06-27 22:56:05,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.875) internal successors, (191), 8 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:56:05,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:56:05,468 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:56:05,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 22:56:05,468 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:56:05,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:56:05,469 INFO L85 PathProgramCache]: Analyzing trace with hash -856806204, now seen corresponding path program 7 times [2024-06-27 22:56:05,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:56:05,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080739525] [2024-06-27 22:56:05,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:56:05,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:56:05,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:56:06,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:56:06,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:56:06,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080739525] [2024-06-27 22:56:06,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080739525] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:56:06,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:56:06,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:56:06,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412334837] [2024-06-27 22:56:06,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:56:06,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:56:06,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:56:06,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:56:06,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:56:06,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 48 [2024-06-27 22:56:06,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 245 transitions, 3878 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:56:06,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:56:06,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 48 [2024-06-27 22:56:06,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:56:07,918 INFO L124 PetriNetUnfolderBase]: 4842/10649 cut-off events. [2024-06-27 22:56:07,919 INFO L125 PetriNetUnfolderBase]: For 161212/161569 co-relation queries the response was YES. [2024-06-27 22:56:08,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47546 conditions, 10649 events. 4842/10649 cut-off events. For 161212/161569 co-relation queries the response was YES. Maximal size of possible extension queue 825. Compared 106451 event pairs, 1732 based on Foata normal form. 40/9728 useless extension candidates. Maximal degree in co-relation 47430. Up to 5921 conditions per place. [2024-06-27 22:56:08,045 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 215 selfloop transitions, 47 changer transitions 0/287 dead transitions. [2024-06-27 22:56:08,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 287 transitions, 4628 flow [2024-06-27 22:56:08,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:56:08,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:56:08,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 266 transitions. [2024-06-27 22:56:08,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6157407407407407 [2024-06-27 22:56:08,047 INFO L175 Difference]: Start difference. First operand has 246 places, 245 transitions, 3878 flow. Second operand 9 states and 266 transitions. [2024-06-27 22:56:08,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 287 transitions, 4628 flow [2024-06-27 22:56:08,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 287 transitions, 4511 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-06-27 22:56:08,992 INFO L231 Difference]: Finished difference. Result has 251 places, 247 transitions, 3930 flow [2024-06-27 22:56:08,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3761, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3930, PETRI_PLACES=251, PETRI_TRANSITIONS=247} [2024-06-27 22:56:08,993 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 197 predicate places. [2024-06-27 22:56:08,993 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 247 transitions, 3930 flow [2024-06-27 22:56:08,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:56:08,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:56:08,994 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:56:08,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 22:56:08,994 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:56:08,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:56:08,995 INFO L85 PathProgramCache]: Analyzing trace with hash 170581618, now seen corresponding path program 8 times [2024-06-27 22:56:08,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:56:08,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537781041] [2024-06-27 22:56:08,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:56:08,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:56:09,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:56:09,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:56:09,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:56:09,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537781041] [2024-06-27 22:56:09,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537781041] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:56:09,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:56:09,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:56:09,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109113267] [2024-06-27 22:56:09,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:56:09,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:56:09,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:56:09,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:56:09,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:56:09,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2024-06-27 22:56:09,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 247 transitions, 3930 flow. Second operand has 8 states, 8 states have (on average 23.875) internal successors, (191), 8 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:56:09,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:56:09,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2024-06-27 22:56:09,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:56:11,594 INFO L124 PetriNetUnfolderBase]: 5035/10986 cut-off events. [2024-06-27 22:56:11,594 INFO L125 PetriNetUnfolderBase]: For 164869/165247 co-relation queries the response was YES. [2024-06-27 22:56:11,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48623 conditions, 10986 events. 5035/10986 cut-off events. For 164869/165247 co-relation queries the response was YES. Maximal size of possible extension queue 857. Compared 109872 event pairs, 1799 based on Foata normal form. 42/10066 useless extension candidates. Maximal degree in co-relation 48505. Up to 6253 conditions per place. [2024-06-27 22:56:11,713 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 208 selfloop transitions, 45 changer transitions 0/279 dead transitions. [2024-06-27 22:56:11,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 279 transitions, 4574 flow [2024-06-27 22:56:11,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:56:11,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:56:11,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 246 transitions. [2024-06-27 22:56:11,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.640625 [2024-06-27 22:56:11,714 INFO L175 Difference]: Start difference. First operand has 251 places, 247 transitions, 3930 flow. Second operand 8 states and 246 transitions. [2024-06-27 22:56:11,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 279 transitions, 4574 flow [2024-06-27 22:56:12,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 279 transitions, 4423 flow, removed 34 selfloop flow, removed 5 redundant places. [2024-06-27 22:56:12,520 INFO L231 Difference]: Finished difference. Result has 254 places, 247 transitions, 3872 flow [2024-06-27 22:56:12,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3779, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3872, PETRI_PLACES=254, PETRI_TRANSITIONS=247} [2024-06-27 22:56:12,521 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 200 predicate places. [2024-06-27 22:56:12,521 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 247 transitions, 3872 flow [2024-06-27 22:56:12,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.875) internal successors, (191), 8 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:56:12,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:56:12,521 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:56:12,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 22:56:12,521 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:56:12,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:56:12,522 INFO L85 PathProgramCache]: Analyzing trace with hash -502002258, now seen corresponding path program 9 times [2024-06-27 22:56:12,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:56:12,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379661490] [2024-06-27 22:56:12,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:56:12,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:56:12,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:56:13,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:56:13,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:56:13,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379661490] [2024-06-27 22:56:13,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379661490] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:56:13,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:56:13,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:56:13,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570490405] [2024-06-27 22:56:13,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:56:13,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:56:13,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:56:13,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:56:13,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:56:13,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2024-06-27 22:56:13,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 247 transitions, 3872 flow. Second operand has 8 states, 8 states have (on average 23.875) internal successors, (191), 8 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:56:13,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:56:13,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2024-06-27 22:56:13,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:56:15,115 INFO L124 PetriNetUnfolderBase]: 5373/11801 cut-off events. [2024-06-27 22:56:15,116 INFO L125 PetriNetUnfolderBase]: For 189074/189497 co-relation queries the response was YES. [2024-06-27 22:56:15,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51390 conditions, 11801 events. 5373/11801 cut-off events. For 189074/189497 co-relation queries the response was YES. Maximal size of possible extension queue 936. Compared 120484 event pairs, 1840 based on Foata normal form. 41/10750 useless extension candidates. Maximal degree in co-relation 51273. Up to 5546 conditions per place. [2024-06-27 22:56:15,255 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 207 selfloop transitions, 55 changer transitions 0/288 dead transitions. [2024-06-27 22:56:15,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 288 transitions, 4750 flow [2024-06-27 22:56:15,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:56:15,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:56:15,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 252 transitions. [2024-06-27 22:56:15,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.65625 [2024-06-27 22:56:15,257 INFO L175 Difference]: Start difference. First operand has 254 places, 247 transitions, 3872 flow. Second operand 8 states and 252 transitions. [2024-06-27 22:56:15,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 288 transitions, 4750 flow [2024-06-27 22:56:16,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 288 transitions, 4661 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-27 22:56:16,233 INFO L231 Difference]: Finished difference. Result has 257 places, 248 transitions, 3973 flow [2024-06-27 22:56:16,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3783, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3973, PETRI_PLACES=257, PETRI_TRANSITIONS=248} [2024-06-27 22:56:16,234 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 203 predicate places. [2024-06-27 22:56:16,234 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 248 transitions, 3973 flow [2024-06-27 22:56:16,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.875) internal successors, (191), 8 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:56:16,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:56:16,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:56:16,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 22:56:16,235 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:56:16,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:56:16,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1697220838, now seen corresponding path program 10 times [2024-06-27 22:56:16,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:56:16,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671149562] [2024-06-27 22:56:16,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:56:16,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:56:16,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:56:16,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:56:16,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:56:16,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671149562] [2024-06-27 22:56:16,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671149562] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:56:16,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:56:16,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:56:16,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681885326] [2024-06-27 22:56:16,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:56:16,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:56:16,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:56:16,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:56:16,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:56:16,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 48 [2024-06-27 22:56:16,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 248 transitions, 3973 flow. Second operand has 8 states, 8 states have (on average 22.0) internal successors, (176), 8 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:56:16,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:56:16,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 48 [2024-06-27 22:56:16,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:56:19,011 INFO L124 PetriNetUnfolderBase]: 6423/13875 cut-off events. [2024-06-27 22:56:19,012 INFO L125 PetriNetUnfolderBase]: For 196600/197108 co-relation queries the response was YES. [2024-06-27 22:56:19,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60195 conditions, 13875 events. 6423/13875 cut-off events. For 196600/197108 co-relation queries the response was YES. Maximal size of possible extension queue 1028. Compared 141649 event pairs, 2133 based on Foata normal form. 32/12739 useless extension candidates. Maximal degree in co-relation 60075. Up to 7524 conditions per place. [2024-06-27 22:56:19,203 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 221 selfloop transitions, 80 changer transitions 0/322 dead transitions. [2024-06-27 22:56:19,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 322 transitions, 5222 flow [2024-06-27 22:56:19,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:56:19,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:56:19,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 315 transitions. [2024-06-27 22:56:19,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5965909090909091 [2024-06-27 22:56:19,205 INFO L175 Difference]: Start difference. First operand has 257 places, 248 transitions, 3973 flow. Second operand 11 states and 315 transitions. [2024-06-27 22:56:19,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 322 transitions, 5222 flow [2024-06-27 22:56:20,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 322 transitions, 5012 flow, removed 61 selfloop flow, removed 4 redundant places. [2024-06-27 22:56:20,654 INFO L231 Difference]: Finished difference. Result has 266 places, 276 transitions, 4453 flow [2024-06-27 22:56:20,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3833, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4453, PETRI_PLACES=266, PETRI_TRANSITIONS=276} [2024-06-27 22:56:20,656 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 212 predicate places. [2024-06-27 22:56:20,657 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 276 transitions, 4453 flow [2024-06-27 22:56:20,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.0) internal successors, (176), 8 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:56:20,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:56:20,657 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:56:20,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 22:56:20,657 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:56:20,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:56:20,658 INFO L85 PathProgramCache]: Analyzing trace with hash 2119079234, now seen corresponding path program 11 times [2024-06-27 22:56:20,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:56:20,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425775137] [2024-06-27 22:56:20,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:56:20,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:56:20,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:56:21,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:56:21,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:56:21,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425775137] [2024-06-27 22:56:21,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425775137] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:56:21,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:56:21,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:56:21,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112339888] [2024-06-27 22:56:21,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:56:21,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:56:21,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:56:21,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:56:21,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:56:21,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 48 [2024-06-27 22:56:21,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 276 transitions, 4453 flow. Second operand has 8 states, 8 states have (on average 22.0) internal successors, (176), 8 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:56:21,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:56:21,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 48 [2024-06-27 22:56:21,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:56:23,728 INFO L124 PetriNetUnfolderBase]: 6788/14694 cut-off events. [2024-06-27 22:56:23,729 INFO L125 PetriNetUnfolderBase]: For 205290/205828 co-relation queries the response was YES. [2024-06-27 22:56:23,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63712 conditions, 14694 events. 6788/14694 cut-off events. For 205290/205828 co-relation queries the response was YES. Maximal size of possible extension queue 1091. Compared 151268 event pairs, 2206 based on Foata normal form. 35/13559 useless extension candidates. Maximal degree in co-relation 63588. Up to 7891 conditions per place. [2024-06-27 22:56:23,919 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 195 selfloop transitions, 108 changer transitions 0/324 dead transitions. [2024-06-27 22:56:23,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 324 transitions, 5396 flow [2024-06-27 22:56:23,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:56:23,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:56:23,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 289 transitions. [2024-06-27 22:56:23,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6020833333333333 [2024-06-27 22:56:23,921 INFO L175 Difference]: Start difference. First operand has 266 places, 276 transitions, 4453 flow. Second operand 10 states and 289 transitions. [2024-06-27 22:56:23,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 324 transitions, 5396 flow [2024-06-27 22:56:25,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 324 transitions, 5325 flow, removed 22 selfloop flow, removed 3 redundant places. [2024-06-27 22:56:25,078 INFO L231 Difference]: Finished difference. Result has 275 places, 284 transitions, 4850 flow [2024-06-27 22:56:25,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4388, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4850, PETRI_PLACES=275, PETRI_TRANSITIONS=284} [2024-06-27 22:56:25,078 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 221 predicate places. [2024-06-27 22:56:25,078 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 284 transitions, 4850 flow [2024-06-27 22:56:25,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.0) internal successors, (176), 8 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:56:25,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:56:25,079 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:56:25,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 22:56:25,079 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:56:25,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:56:25,079 INFO L85 PathProgramCache]: Analyzing trace with hash 811238886, now seen corresponding path program 12 times [2024-06-27 22:56:25,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:56:25,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66185806] [2024-06-27 22:56:25,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:56:25,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:56:25,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:56:25,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:56:25,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:56:25,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66185806] [2024-06-27 22:56:25,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66185806] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:56:25,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:56:25,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:56:25,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473497256] [2024-06-27 22:56:25,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:56:25,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:56:25,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:56:25,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:56:25,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:56:25,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 48 [2024-06-27 22:56:25,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 284 transitions, 4850 flow. Second operand has 9 states, 9 states have (on average 21.77777777777778) internal successors, (196), 9 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:56:25,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:56:25,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 48 [2024-06-27 22:56:25,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:56:28,242 INFO L124 PetriNetUnfolderBase]: 7161/15443 cut-off events. [2024-06-27 22:56:28,242 INFO L125 PetriNetUnfolderBase]: For 219588/220171 co-relation queries the response was YES. [2024-06-27 22:56:28,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67523 conditions, 15443 events. 7161/15443 cut-off events. For 219588/220171 co-relation queries the response was YES. Maximal size of possible extension queue 1166. Compared 160819 event pairs, 2262 based on Foata normal form. 38/14225 useless extension candidates. Maximal degree in co-relation 67396. Up to 6156 conditions per place. [2024-06-27 22:56:28,470 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 193 selfloop transitions, 117 changer transitions 0/331 dead transitions. [2024-06-27 22:56:28,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 331 transitions, 5797 flow [2024-06-27 22:56:28,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:56:28,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:56:28,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 288 transitions. [2024-06-27 22:56:28,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-06-27 22:56:28,471 INFO L175 Difference]: Start difference. First operand has 275 places, 284 transitions, 4850 flow. Second operand 10 states and 288 transitions. [2024-06-27 22:56:28,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 331 transitions, 5797 flow [2024-06-27 22:56:29,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 331 transitions, 5616 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-27 22:56:29,781 INFO L231 Difference]: Finished difference. Result has 281 places, 288 transitions, 5133 flow [2024-06-27 22:56:29,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4669, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5133, PETRI_PLACES=281, PETRI_TRANSITIONS=288} [2024-06-27 22:56:29,782 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 227 predicate places. [2024-06-27 22:56:29,782 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 288 transitions, 5133 flow [2024-06-27 22:56:29,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 21.77777777777778) internal successors, (196), 9 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:56:29,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:56:29,782 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:56:29,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 22:56:29,782 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:56:29,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:56:29,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1813021058, now seen corresponding path program 13 times [2024-06-27 22:56:29,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:56:29,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489403319] [2024-06-27 22:56:29,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:56:29,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:56:29,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:56:30,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:56:30,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:56:30,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489403319] [2024-06-27 22:56:30,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489403319] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:56:30,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:56:30,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:56:30,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738978045] [2024-06-27 22:56:30,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:56:30,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:56:30,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:56:30,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:56:30,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:56:30,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2024-06-27 22:56:30,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 288 transitions, 5133 flow. Second operand has 8 states, 8 states have (on average 23.875) internal successors, (191), 8 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:56:30,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:56:30,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2024-06-27 22:56:30,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:56:32,828 INFO L124 PetriNetUnfolderBase]: 6936/15382 cut-off events. [2024-06-27 22:56:32,828 INFO L125 PetriNetUnfolderBase]: For 259175/259741 co-relation queries the response was YES. [2024-06-27 22:56:33,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68066 conditions, 15382 events. 6936/15382 cut-off events. For 259175/259741 co-relation queries the response was YES. Maximal size of possible extension queue 1231. Compared 164599 event pairs, 2486 based on Foata normal form. 49/14058 useless extension candidates. Maximal degree in co-relation 67937. Up to 7440 conditions per place. [2024-06-27 22:56:33,088 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 205 selfloop transitions, 89 changer transitions 0/321 dead transitions. [2024-06-27 22:56:33,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 321 transitions, 6007 flow [2024-06-27 22:56:33,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:56:33,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:56:33,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 247 transitions. [2024-06-27 22:56:33,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6432291666666666 [2024-06-27 22:56:33,089 INFO L175 Difference]: Start difference. First operand has 281 places, 288 transitions, 5133 flow. Second operand 8 states and 247 transitions. [2024-06-27 22:56:33,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 321 transitions, 6007 flow [2024-06-27 22:56:35,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 321 transitions, 5933 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-27 22:56:35,314 INFO L231 Difference]: Finished difference. Result has 285 places, 288 transitions, 5240 flow [2024-06-27 22:56:35,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5059, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5240, PETRI_PLACES=285, PETRI_TRANSITIONS=288} [2024-06-27 22:56:35,315 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 231 predicate places. [2024-06-27 22:56:35,315 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 288 transitions, 5240 flow [2024-06-27 22:56:35,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.875) internal successors, (191), 8 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:56:35,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:56:35,315 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:56:35,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-27 22:56:35,316 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:56:35,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:56:35,316 INFO L85 PathProgramCache]: Analyzing trace with hash 83528520, now seen corresponding path program 14 times [2024-06-27 22:56:35,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:56:35,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639863314] [2024-06-27 22:56:35,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:56:35,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:56:35,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:56:35,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:56:35,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:56:35,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639863314] [2024-06-27 22:56:35,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639863314] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:56:35,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:56:35,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:56:35,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384274211] [2024-06-27 22:56:35,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:56:35,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:56:35,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:56:35,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:56:35,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:56:35,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2024-06-27 22:56:35,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 288 transitions, 5240 flow. Second operand has 8 states, 8 states have (on average 23.875) internal successors, (191), 8 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:56:35,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:56:35,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2024-06-27 22:56:35,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:56:39,176 INFO L124 PetriNetUnfolderBase]: 7109/15819 cut-off events. [2024-06-27 22:56:39,177 INFO L125 PetriNetUnfolderBase]: For 269941/270527 co-relation queries the response was YES. [2024-06-27 22:56:39,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69697 conditions, 15819 events. 7109/15819 cut-off events. For 269941/270527 co-relation queries the response was YES. Maximal size of possible extension queue 1274. Compared 170292 event pairs, 2788 based on Foata normal form. 48/14403 useless extension candidates. Maximal degree in co-relation 69568. Up to 8689 conditions per place. [2024-06-27 22:56:39,339 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 201 selfloop transitions, 89 changer transitions 0/317 dead transitions. [2024-06-27 22:56:39,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 317 transitions, 5944 flow [2024-06-27 22:56:39,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:56:39,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:56:39,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 244 transitions. [2024-06-27 22:56:39,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6354166666666666 [2024-06-27 22:56:39,341 INFO L175 Difference]: Start difference. First operand has 285 places, 288 transitions, 5240 flow. Second operand 8 states and 244 transitions. [2024-06-27 22:56:39,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 317 transitions, 5944 flow [2024-06-27 22:56:41,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 317 transitions, 5767 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-27 22:56:41,270 INFO L231 Difference]: Finished difference. Result has 287 places, 288 transitions, 5244 flow [2024-06-27 22:56:41,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5063, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5244, PETRI_PLACES=287, PETRI_TRANSITIONS=288} [2024-06-27 22:56:41,271 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 233 predicate places. [2024-06-27 22:56:41,271 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 288 transitions, 5244 flow [2024-06-27 22:56:41,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.875) internal successors, (191), 8 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:56:41,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:56:41,271 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:56:41,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-27 22:56:41,271 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:56:41,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:56:41,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1582928118, now seen corresponding path program 15 times [2024-06-27 22:56:41,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:56:41,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475635598] [2024-06-27 22:56:41,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:56:41,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:56:41,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:56:41,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:56:41,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:56:41,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475635598] [2024-06-27 22:56:41,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475635598] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:56:41,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:56:41,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:56:41,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858663452] [2024-06-27 22:56:41,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:56:41,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:56:41,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:56:41,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:56:41,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:56:42,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2024-06-27 22:56:42,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 288 transitions, 5244 flow. Second operand has 8 states, 8 states have (on average 23.875) internal successors, (191), 8 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:56:42,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:56:42,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2024-06-27 22:56:42,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:56:45,398 INFO L124 PetriNetUnfolderBase]: 7326/16446 cut-off events. [2024-06-27 22:56:45,399 INFO L125 PetriNetUnfolderBase]: For 271999/272608 co-relation queries the response was YES. [2024-06-27 22:56:45,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71142 conditions, 16446 events. 7326/16446 cut-off events. For 271999/272608 co-relation queries the response was YES. Maximal size of possible extension queue 1320. Compared 179138 event pairs, 2475 based on Foata normal form. 46/14956 useless extension candidates. Maximal degree in co-relation 71012. Up to 7367 conditions per place. [2024-06-27 22:56:45,568 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 190 selfloop transitions, 108 changer transitions 0/325 dead transitions. [2024-06-27 22:56:45,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 325 transitions, 6138 flow [2024-06-27 22:56:45,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:56:45,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:56:45,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 250 transitions. [2024-06-27 22:56:45,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6510416666666666 [2024-06-27 22:56:45,570 INFO L175 Difference]: Start difference. First operand has 287 places, 288 transitions, 5244 flow. Second operand 8 states and 250 transitions. [2024-06-27 22:56:45,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 325 transitions, 6138 flow [2024-06-27 22:56:47,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 325 transitions, 5961 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-27 22:56:47,590 INFO L231 Difference]: Finished difference. Result has 289 places, 288 transitions, 5287 flow [2024-06-27 22:56:47,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5067, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5287, PETRI_PLACES=289, PETRI_TRANSITIONS=288} [2024-06-27 22:56:47,591 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 235 predicate places. [2024-06-27 22:56:47,591 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 288 transitions, 5287 flow [2024-06-27 22:56:47,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.875) internal successors, (191), 8 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:56:47,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:56:47,591 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:56:47,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-27 22:56:47,592 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:56:47,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:56:47,592 INFO L85 PathProgramCache]: Analyzing trace with hash 844174142, now seen corresponding path program 16 times [2024-06-27 22:56:47,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:56:47,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957952344] [2024-06-27 22:56:47,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:56:47,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:56:47,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:56:48,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:56:48,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:56:48,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957952344] [2024-06-27 22:56:48,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957952344] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:56:48,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:56:48,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:56:48,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836262220] [2024-06-27 22:56:48,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:56:48,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:56:48,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:56:48,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:56:48,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:56:48,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2024-06-27 22:56:48,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 288 transitions, 5287 flow. Second operand has 8 states, 8 states have (on average 23.875) internal successors, (191), 8 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:56:48,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:56:48,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2024-06-27 22:56:48,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:56:51,412 INFO L124 PetriNetUnfolderBase]: 7329/16332 cut-off events. [2024-06-27 22:56:51,412 INFO L125 PetriNetUnfolderBase]: For 260833/261437 co-relation queries the response was YES. [2024-06-27 22:56:51,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70972 conditions, 16332 events. 7329/16332 cut-off events. For 260833/261437 co-relation queries the response was YES. Maximal size of possible extension queue 1312. Compared 176778 event pairs, 2868 based on Foata normal form. 48/14880 useless extension candidates. Maximal degree in co-relation 70841. Up to 8974 conditions per place. [2024-06-27 22:56:51,628 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 206 selfloop transitions, 84 changer transitions 0/317 dead transitions. [2024-06-27 22:56:51,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 317 transitions, 5991 flow [2024-06-27 22:56:51,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:56:51,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:56:51,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 244 transitions. [2024-06-27 22:56:51,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6354166666666666 [2024-06-27 22:56:51,629 INFO L175 Difference]: Start difference. First operand has 289 places, 288 transitions, 5287 flow. Second operand 8 states and 244 transitions. [2024-06-27 22:56:51,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 317 transitions, 5991 flow [2024-06-27 22:56:53,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 317 transitions, 5857 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-27 22:56:53,525 INFO L231 Difference]: Finished difference. Result has 292 places, 288 transitions, 5324 flow [2024-06-27 22:56:53,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5153, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5324, PETRI_PLACES=292, PETRI_TRANSITIONS=288} [2024-06-27 22:56:53,534 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 238 predicate places. [2024-06-27 22:56:53,534 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 288 transitions, 5324 flow [2024-06-27 22:56:53,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.875) internal successors, (191), 8 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:56:53,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:56:53,534 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:56:53,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-27 22:56:53,535 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:56:53,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:56:53,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1709240074, now seen corresponding path program 17 times [2024-06-27 22:56:53,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:56:53,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192803985] [2024-06-27 22:56:53,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:56:53,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:56:53,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:56:54,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:56:54,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:56:54,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192803985] [2024-06-27 22:56:54,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192803985] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:56:54,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:56:54,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:56:54,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450960659] [2024-06-27 22:56:54,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:56:54,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:56:54,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:56:54,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:56:54,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:56:54,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2024-06-27 22:56:54,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 288 transitions, 5324 flow. Second operand has 8 states, 8 states have (on average 23.875) internal successors, (191), 8 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:56:54,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:56:54,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2024-06-27 22:56:54,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:56:57,511 INFO L124 PetriNetUnfolderBase]: 7606/16881 cut-off events. [2024-06-27 22:56:57,511 INFO L125 PetriNetUnfolderBase]: For 271861/272524 co-relation queries the response was YES. [2024-06-27 22:56:57,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71974 conditions, 16881 events. 7606/16881 cut-off events. For 271861/272524 co-relation queries the response was YES. Maximal size of possible extension queue 1402. Compared 184824 event pairs, 2242 based on Foata normal form. 49/15428 useless extension candidates. Maximal degree in co-relation 71842. Up to 4053 conditions per place. [2024-06-27 22:56:57,698 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 182 selfloop transitions, 118 changer transitions 0/327 dead transitions. [2024-06-27 22:56:57,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 327 transitions, 6264 flow [2024-06-27 22:56:57,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:56:57,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:56:57,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 251 transitions. [2024-06-27 22:56:57,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6536458333333334 [2024-06-27 22:56:57,700 INFO L175 Difference]: Start difference. First operand has 292 places, 288 transitions, 5324 flow. Second operand 8 states and 251 transitions. [2024-06-27 22:56:57,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 327 transitions, 6264 flow [2024-06-27 22:56:59,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 327 transitions, 6097 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-27 22:56:59,833 INFO L231 Difference]: Finished difference. Result has 294 places, 288 transitions, 5396 flow [2024-06-27 22:56:59,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5157, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5396, PETRI_PLACES=294, PETRI_TRANSITIONS=288} [2024-06-27 22:56:59,833 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 240 predicate places. [2024-06-27 22:56:59,833 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 288 transitions, 5396 flow [2024-06-27 22:56:59,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.875) internal successors, (191), 8 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:56:59,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:56:59,834 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:56:59,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-27 22:56:59,834 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:56:59,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:56:59,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1362587402, now seen corresponding path program 18 times [2024-06-27 22:56:59,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:56:59,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940443114] [2024-06-27 22:56:59,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:56:59,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:56:59,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:57:00,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:57:00,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:57:00,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940443114] [2024-06-27 22:57:00,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940443114] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:57:00,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:57:00,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:57:00,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993060213] [2024-06-27 22:57:00,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:57:00,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:57:00,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:57:00,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:57:00,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:57:00,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2024-06-27 22:57:00,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 288 transitions, 5396 flow. Second operand has 8 states, 8 states have (on average 23.875) internal successors, (191), 8 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:57:00,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:57:00,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2024-06-27 22:57:00,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:57:03,802 INFO L124 PetriNetUnfolderBase]: 7820/17358 cut-off events. [2024-06-27 22:57:03,802 INFO L125 PetriNetUnfolderBase]: For 248174/248831 co-relation queries the response was YES. [2024-06-27 22:57:03,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72473 conditions, 17358 events. 7820/17358 cut-off events. For 248174/248831 co-relation queries the response was YES. Maximal size of possible extension queue 1408. Compared 191293 event pairs, 2604 based on Foata normal form. 46/15771 useless extension candidates. Maximal degree in co-relation 72340. Up to 4391 conditions per place. [2024-06-27 22:57:03,996 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 211 selfloop transitions, 85 changer transitions 0/323 dead transitions. [2024-06-27 22:57:03,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 323 transitions, 6192 flow [2024-06-27 22:57:03,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:57:03,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:57:03,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 248 transitions. [2024-06-27 22:57:03,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6458333333333334 [2024-06-27 22:57:03,998 INFO L175 Difference]: Start difference. First operand has 294 places, 288 transitions, 5396 flow. Second operand 8 states and 248 transitions. [2024-06-27 22:57:03,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 323 transitions, 6192 flow [2024-06-27 22:57:06,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 323 transitions, 5957 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-27 22:57:06,008 INFO L231 Difference]: Finished difference. Result has 296 places, 288 transitions, 5335 flow [2024-06-27 22:57:06,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5161, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5335, PETRI_PLACES=296, PETRI_TRANSITIONS=288} [2024-06-27 22:57:06,008 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 242 predicate places. [2024-06-27 22:57:06,008 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 288 transitions, 5335 flow [2024-06-27 22:57:06,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.875) internal successors, (191), 8 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:57:06,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:57:06,009 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:57:06,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-27 22:57:06,009 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:57:06,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:57:06,009 INFO L85 PathProgramCache]: Analyzing trace with hash 791295270, now seen corresponding path program 19 times [2024-06-27 22:57:06,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:57:06,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743924987] [2024-06-27 22:57:06,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:57:06,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:57:06,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:57:06,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:57:06,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:57:06,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743924987] [2024-06-27 22:57:06,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743924987] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:57:06,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:57:06,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:57:06,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779712015] [2024-06-27 22:57:06,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:57:06,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:57:06,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:57:06,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:57:06,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:57:06,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2024-06-27 22:57:06,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 288 transitions, 5335 flow. Second operand has 8 states, 8 states have (on average 23.875) internal successors, (191), 8 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:57:06,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:57:06,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2024-06-27 22:57:06,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:57:10,001 INFO L124 PetriNetUnfolderBase]: 8044/17943 cut-off events. [2024-06-27 22:57:10,001 INFO L125 PetriNetUnfolderBase]: For 280489/281172 co-relation queries the response was YES. [2024-06-27 22:57:10,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75319 conditions, 17943 events. 8044/17943 cut-off events. For 280489/281172 co-relation queries the response was YES. Maximal size of possible extension queue 1480. Compared 199278 event pairs, 4742 based on Foata normal form. 46/16019 useless extension candidates. Maximal degree in co-relation 75185. Up to 10697 conditions per place. [2024-06-27 22:57:10,222 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 272 selfloop transitions, 28 changer transitions 0/327 dead transitions. [2024-06-27 22:57:10,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 327 transitions, 6283 flow [2024-06-27 22:57:10,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:57:10,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:57:10,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 276 transitions. [2024-06-27 22:57:10,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6388888888888888 [2024-06-27 22:57:10,224 INFO L175 Difference]: Start difference. First operand has 296 places, 288 transitions, 5335 flow. Second operand 9 states and 276 transitions. [2024-06-27 22:57:10,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 327 transitions, 6283 flow [2024-06-27 22:57:12,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 327 transitions, 6115 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-27 22:57:12,668 INFO L231 Difference]: Finished difference. Result has 299 places, 288 transitions, 5226 flow [2024-06-27 22:57:12,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5167, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5226, PETRI_PLACES=299, PETRI_TRANSITIONS=288} [2024-06-27 22:57:12,669 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 245 predicate places. [2024-06-27 22:57:12,669 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 288 transitions, 5226 flow [2024-06-27 22:57:12,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.875) internal successors, (191), 8 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:57:12,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:57:12,669 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:57:12,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-27 22:57:12,670 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:57:12,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:57:12,670 INFO L85 PathProgramCache]: Analyzing trace with hash -127011992, now seen corresponding path program 20 times [2024-06-27 22:57:12,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:57:12,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671408892] [2024-06-27 22:57:12,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:57:12,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:57:12,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:57:13,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:57:13,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:57:13,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671408892] [2024-06-27 22:57:13,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671408892] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:57:13,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:57:13,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:57:13,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633876897] [2024-06-27 22:57:13,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:57:13,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:57:13,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:57:13,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:57:13,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:57:13,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2024-06-27 22:57:13,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 288 transitions, 5226 flow. Second operand has 8 states, 8 states have (on average 23.875) internal successors, (191), 8 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:57:13,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:57:13,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2024-06-27 22:57:13,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:57:16,563 INFO L124 PetriNetUnfolderBase]: 8020/17912 cut-off events. [2024-06-27 22:57:16,564 INFO L125 PetriNetUnfolderBase]: For 286165/286857 co-relation queries the response was YES. [2024-06-27 22:57:16,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75160 conditions, 17912 events. 8020/17912 cut-off events. For 286165/286857 co-relation queries the response was YES. Maximal size of possible extension queue 1504. Compared 198934 event pairs, 4782 based on Foata normal form. 46/15973 useless extension candidates. Maximal degree in co-relation 75025. Up to 11170 conditions per place. [2024-06-27 22:57:16,779 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 265 selfloop transitions, 26 changer transitions 0/318 dead transitions. [2024-06-27 22:57:16,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 318 transitions, 5968 flow [2024-06-27 22:57:16,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:57:16,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:57:16,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 243 transitions. [2024-06-27 22:57:16,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6328125 [2024-06-27 22:57:16,781 INFO L175 Difference]: Start difference. First operand has 299 places, 288 transitions, 5226 flow. Second operand 8 states and 243 transitions. [2024-06-27 22:57:16,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 318 transitions, 5968 flow