./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix041_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix041_power.opt_pso.opt_rmo.opt_tso.oepc_tso.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/mix041_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix041_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 23:50:04,699 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 23:50:04,751 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 23:50:04,757 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 23:50:04,757 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 23:50:04,773 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 23:50:04,774 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 23:50:04,774 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 23:50:04,774 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 23:50:04,775 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 23:50:04,775 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 23:50:04,775 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 23:50:04,775 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 23:50:04,776 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 23:50:04,776 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 23:50:04,776 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 23:50:04,776 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 23:50:04,777 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 23:50:04,777 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 23:50:04,777 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 23:50:04,777 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 23:50:04,780 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 23:50:04,780 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 23:50:04,780 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 23:50:04,783 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 23:50:04,783 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 23:50:04,783 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 23:50:04,783 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 23:50:04,783 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 23:50:04,783 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 23:50:04,784 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 23:50:04,784 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 23:50:04,784 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 23:50:04,784 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 23:50:04,784 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 23:50:04,784 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 23:50:04,784 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 23:50:04,785 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 23:50:04,785 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 23:50:04,785 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 23:50:04,785 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 23:50:04,786 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 23:50:04,786 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 23:50:04,787 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-27 23:50:04,962 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 23:50:04,982 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 23:50:04,984 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 23:50:04,984 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 23:50:04,985 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 23:50:04,986 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix041_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.yml/witness.yml [2024-06-27 23:50:05,065 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 23:50:05,066 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 23:50:05,068 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix041_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-27 23:50:05,999 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 23:50:06,234 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 23:50:06,238 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix041_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-27 23:50:06,257 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a77f5bd73/d703535df92144eb80e2456b4c5629cc/FLAG5821fb1e6 [2024-06-27 23:50:06,269 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a77f5bd73/d703535df92144eb80e2456b4c5629cc [2024-06-27 23:50:06,270 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 23:50:06,271 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 23:50:06,273 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 23:50:06,273 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 23:50:06,277 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 23:50:06,278 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:50:05" (1/2) ... [2024-06-27 23:50:06,279 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19a3924e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:50:06, skipping insertion in model container [2024-06-27 23:50:06,279 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:50:05" (1/2) ... [2024-06-27 23:50:06,280 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5c9dbcd6 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:50:06, skipping insertion in model container [2024-06-27 23:50:06,281 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 11:50:06" (2/2) ... [2024-06-27 23:50:06,282 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19a3924e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:50:06, skipping insertion in model container [2024-06-27 23:50:06,282 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 11:50:06" (2/2) ... [2024-06-27 23:50:06,282 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 23:50:06,303 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 23:50:06,304 INFO L97 edCorrectnessWitness]: Location invariant before [L806-L806] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL && (0LL - (long long )__unbuffered_p1_EBX) + (long long )z >= 0LL) && (0LL - (long long )x$r_buff0_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )weak$$choice2 >= 0LL) && (1LL - (long long )x) + (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )x) + (long long )x$w_buff0 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )x$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )z >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$r_buff1_thd2 >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff1_used >= 0LL) && (long long )x$r_buff1_thd2 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff0_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1 >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0_used - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff1 - (long long )x$w_buff1_used >= 0LL) [2024-06-27 23:50:06,304 INFO L97 edCorrectnessWitness]: Location invariant before [L805-L805] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL && (0LL - (long long )__unbuffered_p1_EBX) + (long long )z >= 0LL) && (0LL - (long long )x$r_buff0_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )weak$$choice2 >= 0LL) && (1LL - (long long )x) + (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )x) + (long long )x$w_buff0 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )x$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )z >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$r_buff1_thd2 >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff1_used >= 0LL) && (long long )x$r_buff1_thd2 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff0_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1 >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0_used - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff1 - (long long )x$w_buff1_used >= 0LL) [2024-06-27 23:50:06,304 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 23:50:06,304 INFO L106 edCorrectnessWitness]: ghost_update [L803-L803] multithreaded = 1; [2024-06-27 23:50:06,340 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 23:50:06,658 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 23:50:06,670 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 23:50:06,814 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 23:50:06,848 INFO L206 MainTranslator]: Completed translation [2024-06-27 23:50:06,849 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:50:06 WrapperNode [2024-06-27 23:50:06,849 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 23:50:06,850 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 23:50:06,850 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 23:50:06,850 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 23:50:06,855 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:50:06" (1/1) ... [2024-06-27 23:50:06,870 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:50:06" (1/1) ... [2024-06-27 23:50:06,903 INFO L138 Inliner]: procedures = 174, calls = 38, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 139 [2024-06-27 23:50:06,904 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 23:50:06,904 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 23:50:06,904 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 23:50:06,905 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 23:50:06,912 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:50:06" (1/1) ... [2024-06-27 23:50:06,913 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:50:06" (1/1) ... [2024-06-27 23:50:06,916 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:50:06" (1/1) ... [2024-06-27 23:50:06,928 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 23:50:06,928 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:50:06" (1/1) ... [2024-06-27 23:50:06,928 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:50:06" (1/1) ... [2024-06-27 23:50:06,934 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:50:06" (1/1) ... [2024-06-27 23:50:06,935 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:50:06" (1/1) ... [2024-06-27 23:50:06,936 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:50:06" (1/1) ... [2024-06-27 23:50:06,938 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:50:06" (1/1) ... [2024-06-27 23:50:06,940 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 23:50:06,941 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 23:50:06,941 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 23:50:06,941 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 23:50:06,942 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:50:06" (1/1) ... [2024-06-27 23:50:06,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 23:50:06,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 23:50:06,963 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 23:50:06,968 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 23:50:06,994 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 23:50:06,995 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 23:50:06,995 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 23:50:06,995 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 23:50:06,995 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 23:50:06,996 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 23:50:06,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 23:50:06,996 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 23:50:06,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 23:50:06,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 23:50:06,997 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 23:50:07,127 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 23:50:07,128 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 23:50:07,483 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 23:50:07,483 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 23:50:07,560 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 23:50:07,560 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 23:50:07,561 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 11:50:07 BoogieIcfgContainer [2024-06-27 23:50:07,561 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 23:50:07,562 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 23:50:07,562 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 23:50:07,564 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 23:50:07,565 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:50:05" (1/4) ... [2024-06-27 23:50:07,565 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bc2317d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 11:50:07, skipping insertion in model container [2024-06-27 23:50:07,565 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 11:50:06" (2/4) ... [2024-06-27 23:50:07,565 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bc2317d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 11:50:07, skipping insertion in model container [2024-06-27 23:50:07,565 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:50:06" (3/4) ... [2024-06-27 23:50:07,566 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bc2317d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 11:50:07, skipping insertion in model container [2024-06-27 23:50:07,566 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 11:50:07" (4/4) ... [2024-06-27 23:50:07,566 INFO L112 eAbstractionObserver]: Analyzing ICFG mix041_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-27 23:50:07,578 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 23:50:07,579 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-27 23:50:07,579 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 23:50:07,607 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 23:50:07,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 31 transitions, 70 flow [2024-06-27 23:50:07,655 INFO L124 PetriNetUnfolderBase]: 0/29 cut-off events. [2024-06-27 23:50:07,656 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 23:50:07,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 29 events. 0/29 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 41 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-27 23:50:07,658 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 31 transitions, 70 flow [2024-06-27 23:50:07,660 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 23 transitions, 52 flow [2024-06-27 23:50:07,672 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 23:50:07,678 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;@323f2b04, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 23:50:07,678 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-27 23:50:07,683 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 23:50:07,683 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 23:50:07,683 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 23:50:07,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:50:07,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 23:50:07,684 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:50:07,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:50:07,691 INFO L85 PathProgramCache]: Analyzing trace with hash 330507394, now seen corresponding path program 1 times [2024-06-27 23:50:07,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:50:07,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421532834] [2024-06-27 23:50:07,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:50:07,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:50:07,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:50:08,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:50:08,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:50:08,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421532834] [2024-06-27 23:50:08,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421532834] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:50:08,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:50:08,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 23:50:08,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807229579] [2024-06-27 23:50:08,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:50:08,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 23:50:08,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:50:08,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 23:50:08,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 23:50:08,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-27 23:50:08,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 52 flow. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states 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 23:50:08,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:50:08,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-27 23:50:08,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:50:08,981 INFO L124 PetriNetUnfolderBase]: 162/316 cut-off events. [2024-06-27 23:50:08,982 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-27 23:50:08,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 627 conditions, 316 events. 162/316 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1194 event pairs, 97 based on Foata normal form. 1/303 useless extension candidates. Maximal degree in co-relation 616. Up to 288 conditions per place. [2024-06-27 23:50:08,986 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 21 selfloop transitions, 3 changer transitions 0/29 dead transitions. [2024-06-27 23:50:08,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 29 transitions, 115 flow [2024-06-27 23:50:08,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 23:50:08,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 23:50:08,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 53 transitions. [2024-06-27 23:50:08,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5698924731182796 [2024-06-27 23:50:08,995 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 52 flow. Second operand 3 states and 53 transitions. [2024-06-27 23:50:08,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 29 transitions, 115 flow [2024-06-27 23:50:08,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 112 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 23:50:08,999 INFO L231 Difference]: Finished difference. Result has 31 places, 25 transitions, 71 flow [2024-06-27 23:50:09,001 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=71, PETRI_PLACES=31, PETRI_TRANSITIONS=25} [2024-06-27 23:50:09,003 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2024-06-27 23:50:09,003 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 71 flow [2024-06-27 23:50:09,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states 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 23:50:09,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:50:09,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:50:09,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 23:50:09,004 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:50:09,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:50:09,005 INFO L85 PathProgramCache]: Analyzing trace with hash -209632469, now seen corresponding path program 1 times [2024-06-27 23:50:09,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:50:09,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026441314] [2024-06-27 23:50:09,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:50:09,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:50:09,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:50:09,697 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 23:50:09,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:50:09,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026441314] [2024-06-27 23:50:09,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026441314] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:50:09,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:50:09,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 23:50:09,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019068436] [2024-06-27 23:50:09,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:50:09,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 23:50:09,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:50:09,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 23:50:09,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 23:50:09,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:50:09,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 25 transitions, 71 flow. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states 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 23:50:09,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:50:09,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:50:09,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:50:09,808 INFO L124 PetriNetUnfolderBase]: 186/348 cut-off events. [2024-06-27 23:50:09,809 INFO L125 PetriNetUnfolderBase]: For 67/67 co-relation queries the response was YES. [2024-06-27 23:50:09,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 790 conditions, 348 events. 186/348 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1260 event pairs, 94 based on Foata normal form. 2/350 useless extension candidates. Maximal degree in co-relation 778. Up to 319 conditions per place. [2024-06-27 23:50:09,811 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 26 selfloop transitions, 5 changer transitions 0/35 dead transitions. [2024-06-27 23:50:09,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 35 transitions, 159 flow [2024-06-27 23:50:09,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 23:50:09,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 23:50:09,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 65 transitions. [2024-06-27 23:50:09,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5241935483870968 [2024-06-27 23:50:09,813 INFO L175 Difference]: Start difference. First operand has 31 places, 25 transitions, 71 flow. Second operand 4 states and 65 transitions. [2024-06-27 23:50:09,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 35 transitions, 159 flow [2024-06-27 23:50:09,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 35 transitions, 156 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 23:50:09,814 INFO L231 Difference]: Finished difference. Result has 34 places, 27 transitions, 95 flow [2024-06-27 23:50:09,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=95, PETRI_PLACES=34, PETRI_TRANSITIONS=27} [2024-06-27 23:50:09,815 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 4 predicate places. [2024-06-27 23:50:09,815 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 27 transitions, 95 flow [2024-06-27 23:50:09,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states 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 23:50:09,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:50:09,816 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:50:09,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 23:50:09,816 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:50:09,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:50:09,816 INFO L85 PathProgramCache]: Analyzing trace with hash 2091328885, now seen corresponding path program 1 times [2024-06-27 23:50:09,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:50:09,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697511079] [2024-06-27 23:50:09,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:50:09,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:50:09,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:50:10,527 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 23:50:10,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:50:10,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697511079] [2024-06-27 23:50:10,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697511079] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:50:10,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:50:10,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 23:50:10,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115060013] [2024-06-27 23:50:10,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:50:10,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 23:50:10,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:50:10,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 23:50:10,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 23:50:10,580 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:50:10,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 95 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:50:10,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:50:10,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:50:10,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:50:10,679 INFO L124 PetriNetUnfolderBase]: 180/340 cut-off events. [2024-06-27 23:50:10,679 INFO L125 PetriNetUnfolderBase]: For 195/195 co-relation queries the response was YES. [2024-06-27 23:50:10,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 850 conditions, 340 events. 180/340 cut-off events. For 195/195 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1228 event pairs, 52 based on Foata normal form. 4/344 useless extension candidates. Maximal degree in co-relation 836. Up to 291 conditions per place. [2024-06-27 23:50:10,682 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 31 selfloop transitions, 7 changer transitions 0/42 dead transitions. [2024-06-27 23:50:10,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 42 transitions, 211 flow [2024-06-27 23:50:10,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 23:50:10,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 23:50:10,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 80 transitions. [2024-06-27 23:50:10,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5161290322580645 [2024-06-27 23:50:10,686 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 95 flow. Second operand 5 states and 80 transitions. [2024-06-27 23:50:10,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 42 transitions, 211 flow [2024-06-27 23:50:10,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 42 transitions, 202 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-27 23:50:10,690 INFO L231 Difference]: Finished difference. Result has 37 places, 29 transitions, 119 flow [2024-06-27 23:50:10,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=119, PETRI_PLACES=37, PETRI_TRANSITIONS=29} [2024-06-27 23:50:10,691 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 7 predicate places. [2024-06-27 23:50:10,691 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 29 transitions, 119 flow [2024-06-27 23:50:10,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:50:10,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:50:10,692 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:50:10,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 23:50:10,692 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:50:10,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:50:10,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1135293634, now seen corresponding path program 1 times [2024-06-27 23:50:10,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:50:10,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691788089] [2024-06-27 23:50:10,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:50:10,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:50:10,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:50:11,903 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 23:50:11,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:50:11,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691788089] [2024-06-27 23:50:11,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691788089] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:50:11,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:50:11,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:50:11,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341759332] [2024-06-27 23:50:11,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:50:11,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:50:11,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:50:11,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:50:11,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:50:11,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:50:11,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 29 transitions, 119 flow. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states 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 23:50:11,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:50:11,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:50:11,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:50:12,125 INFO L124 PetriNetUnfolderBase]: 176/330 cut-off events. [2024-06-27 23:50:12,125 INFO L125 PetriNetUnfolderBase]: For 314/314 co-relation queries the response was YES. [2024-06-27 23:50:12,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 900 conditions, 330 events. 176/330 cut-off events. For 314/314 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1163 event pairs, 30 based on Foata normal form. 4/334 useless extension candidates. Maximal degree in co-relation 885. Up to 265 conditions per place. [2024-06-27 23:50:12,128 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 31 selfloop transitions, 8 changer transitions 0/43 dead transitions. [2024-06-27 23:50:12,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 43 transitions, 225 flow [2024-06-27 23:50:12,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:50:12,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:50:12,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 89 transitions. [2024-06-27 23:50:12,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.478494623655914 [2024-06-27 23:50:12,129 INFO L175 Difference]: Start difference. First operand has 37 places, 29 transitions, 119 flow. Second operand 6 states and 89 transitions. [2024-06-27 23:50:12,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 43 transitions, 225 flow [2024-06-27 23:50:12,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 43 transitions, 210 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-27 23:50:12,131 INFO L231 Difference]: Finished difference. Result has 39 places, 28 transitions, 116 flow [2024-06-27 23:50:12,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=116, PETRI_PLACES=39, PETRI_TRANSITIONS=28} [2024-06-27 23:50:12,132 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 9 predicate places. [2024-06-27 23:50:12,132 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 28 transitions, 116 flow [2024-06-27 23:50:12,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states 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 23:50:12,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:50:12,132 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:50:12,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 23:50:12,133 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:50:12,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:50:12,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1523058016, now seen corresponding path program 1 times [2024-06-27 23:50:12,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:50:12,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665908461] [2024-06-27 23:50:12,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:50:12,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:50:12,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:50:12,794 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 23:50:12,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:50:12,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665908461] [2024-06-27 23:50:12,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665908461] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:50:12,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:50:12,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 23:50:12,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821184632] [2024-06-27 23:50:12,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:50:12,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 23:50:12,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:50:12,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 23:50:12,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 23:50:12,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:50:12,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 28 transitions, 116 flow. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states 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 23:50:12,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:50:12,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:50:12,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:50:12,948 INFO L124 PetriNetUnfolderBase]: 174/327 cut-off events. [2024-06-27 23:50:12,949 INFO L125 PetriNetUnfolderBase]: For 479/479 co-relation queries the response was YES. [2024-06-27 23:50:12,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 932 conditions, 327 events. 174/327 cut-off events. For 479/479 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1170 event pairs, 107 based on Foata normal form. 1/325 useless extension candidates. Maximal degree in co-relation 915. Up to 304 conditions per place. [2024-06-27 23:50:12,950 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 25 selfloop transitions, 8 changer transitions 0/36 dead transitions. [2024-06-27 23:50:12,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 36 transitions, 208 flow [2024-06-27 23:50:12,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 23:50:12,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 23:50:12,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 60 transitions. [2024-06-27 23:50:12,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-27 23:50:12,952 INFO L175 Difference]: Start difference. First operand has 39 places, 28 transitions, 116 flow. Second operand 5 states and 60 transitions. [2024-06-27 23:50:12,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 36 transitions, 208 flow [2024-06-27 23:50:12,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 36 transitions, 186 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-27 23:50:12,954 INFO L231 Difference]: Finished difference. Result has 41 places, 32 transitions, 140 flow [2024-06-27 23:50:12,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=140, PETRI_PLACES=41, PETRI_TRANSITIONS=32} [2024-06-27 23:50:12,955 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 11 predicate places. [2024-06-27 23:50:12,955 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 32 transitions, 140 flow [2024-06-27 23:50:12,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states 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 23:50:12,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:50:12,955 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:50:12,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 23:50:12,956 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:50:12,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:50:12,972 INFO L85 PathProgramCache]: Analyzing trace with hash -542382381, now seen corresponding path program 1 times [2024-06-27 23:50:12,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:50:12,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458997507] [2024-06-27 23:50:12,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:50:12,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:50:12,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:50:13,611 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 23:50:13,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:50:13,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458997507] [2024-06-27 23:50:13,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458997507] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:50:13,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:50:13,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:50:13,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144715631] [2024-06-27 23:50:13,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:50:13,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:50:13,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:50:13,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:50:13,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:50:13,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:50:13,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 32 transitions, 140 flow. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:50:13,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:50:13,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:50:13,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:50:13,787 INFO L124 PetriNetUnfolderBase]: 181/340 cut-off events. [2024-06-27 23:50:13,788 INFO L125 PetriNetUnfolderBase]: For 629/629 co-relation queries the response was YES. [2024-06-27 23:50:13,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1029 conditions, 340 events. 181/340 cut-off events. For 629/629 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1228 event pairs, 97 based on Foata normal form. 1/337 useless extension candidates. Maximal degree in co-relation 1009. Up to 305 conditions per place. [2024-06-27 23:50:13,790 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 32 selfloop transitions, 11 changer transitions 0/46 dead transitions. [2024-06-27 23:50:13,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 46 transitions, 272 flow [2024-06-27 23:50:13,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:50:13,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:50:13,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 75 transitions. [2024-06-27 23:50:13,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-27 23:50:13,791 INFO L175 Difference]: Start difference. First operand has 41 places, 32 transitions, 140 flow. Second operand 6 states and 75 transitions. [2024-06-27 23:50:13,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 46 transitions, 272 flow [2024-06-27 23:50:13,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 46 transitions, 261 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-27 23:50:13,793 INFO L231 Difference]: Finished difference. Result has 46 places, 37 transitions, 189 flow [2024-06-27 23:50:13,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=189, PETRI_PLACES=46, PETRI_TRANSITIONS=37} [2024-06-27 23:50:13,794 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 16 predicate places. [2024-06-27 23:50:13,794 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 37 transitions, 189 flow [2024-06-27 23:50:13,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:50:13,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:50:13,794 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:50:13,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 23:50:13,795 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:50:13,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:50:13,795 INFO L85 PathProgramCache]: Analyzing trace with hash 697773711, now seen corresponding path program 2 times [2024-06-27 23:50:13,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:50:13,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435787210] [2024-06-27 23:50:13,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:50:13,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:50:13,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:50:14,420 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 23:50:14,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:50:14,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435787210] [2024-06-27 23:50:14,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435787210] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:50:14,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:50:14,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:50:14,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168668373] [2024-06-27 23:50:14,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:50:14,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:50:14,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:50:14,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:50:14,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:50:14,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:50:14,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 37 transitions, 189 flow. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:50:14,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:50:14,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:50:14,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:50:14,644 INFO L124 PetriNetUnfolderBase]: 184/345 cut-off events. [2024-06-27 23:50:14,645 INFO L125 PetriNetUnfolderBase]: For 928/928 co-relation queries the response was YES. [2024-06-27 23:50:14,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1146 conditions, 345 events. 184/345 cut-off events. For 928/928 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1253 event pairs, 98 based on Foata normal form. 1/342 useless extension candidates. Maximal degree in co-relation 1124. Up to 310 conditions per place. [2024-06-27 23:50:14,647 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 30 selfloop transitions, 13 changer transitions 0/46 dead transitions. [2024-06-27 23:50:14,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 46 transitions, 312 flow [2024-06-27 23:50:14,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:50:14,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:50:14,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 72 transitions. [2024-06-27 23:50:14,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-27 23:50:14,650 INFO L175 Difference]: Start difference. First operand has 46 places, 37 transitions, 189 flow. Second operand 6 states and 72 transitions. [2024-06-27 23:50:14,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 46 transitions, 312 flow [2024-06-27 23:50:14,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 46 transitions, 287 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-27 23:50:14,653 INFO L231 Difference]: Finished difference. Result has 49 places, 40 transitions, 220 flow [2024-06-27 23:50:14,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=220, PETRI_PLACES=49, PETRI_TRANSITIONS=40} [2024-06-27 23:50:14,654 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 19 predicate places. [2024-06-27 23:50:14,654 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 40 transitions, 220 flow [2024-06-27 23:50:14,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:50:14,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:50:14,655 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:50:14,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 23:50:14,655 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:50:14,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:50:14,656 INFO L85 PathProgramCache]: Analyzing trace with hash 925132671, now seen corresponding path program 3 times [2024-06-27 23:50:14,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:50:14,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928903584] [2024-06-27 23:50:14,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:50:14,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:50:14,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:50:15,386 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 23:50:15,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:50:15,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928903584] [2024-06-27 23:50:15,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928903584] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:50:15,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:50:15,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:50:15,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378169980] [2024-06-27 23:50:15,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:50:15,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:50:15,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:50:15,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:50:15,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:50:15,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:50:15,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 40 transitions, 220 flow. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:50:15,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:50:15,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:50:15,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:50:15,557 INFO L124 PetriNetUnfolderBase]: 182/342 cut-off events. [2024-06-27 23:50:15,557 INFO L125 PetriNetUnfolderBase]: For 1225/1225 co-relation queries the response was YES. [2024-06-27 23:50:15,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1198 conditions, 342 events. 182/342 cut-off events. For 1225/1225 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1255 event pairs, 100 based on Foata normal form. 1/342 useless extension candidates. Maximal degree in co-relation 1174. Up to 298 conditions per place. [2024-06-27 23:50:15,560 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 26 selfloop transitions, 18 changer transitions 0/47 dead transitions. [2024-06-27 23:50:15,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 47 transitions, 336 flow [2024-06-27 23:50:15,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:50:15,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:50:15,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 72 transitions. [2024-06-27 23:50:15,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-27 23:50:15,561 INFO L175 Difference]: Start difference. First operand has 49 places, 40 transitions, 220 flow. Second operand 6 states and 72 transitions. [2024-06-27 23:50:15,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 47 transitions, 336 flow [2024-06-27 23:50:15,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 47 transitions, 312 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-27 23:50:15,563 INFO L231 Difference]: Finished difference. Result has 53 places, 42 transitions, 257 flow [2024-06-27 23:50:15,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=257, PETRI_PLACES=53, PETRI_TRANSITIONS=42} [2024-06-27 23:50:15,564 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 23 predicate places. [2024-06-27 23:50:15,564 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 42 transitions, 257 flow [2024-06-27 23:50:15,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:50:15,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:50:15,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:50:15,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 23:50:15,565 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:50:15,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:50:15,565 INFO L85 PathProgramCache]: Analyzing trace with hash 703495567, now seen corresponding path program 1 times [2024-06-27 23:50:15,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:50:15,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366065046] [2024-06-27 23:50:15,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:50:15,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:50:15,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:50:16,415 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 23:50:16,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:50:16,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366065046] [2024-06-27 23:50:16,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366065046] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:50:16,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:50:16,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:50:16,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569105434] [2024-06-27 23:50:16,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:50:16,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:50:16,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:50:16,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:50:16,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:50:16,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:50:16,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 42 transitions, 257 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:50:16,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:50:16,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:50:16,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:50:16,596 INFO L124 PetriNetUnfolderBase]: 209/378 cut-off events. [2024-06-27 23:50:16,596 INFO L125 PetriNetUnfolderBase]: For 1612/1612 co-relation queries the response was YES. [2024-06-27 23:50:16,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1400 conditions, 378 events. 209/378 cut-off events. For 1612/1612 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1326 event pairs, 117 based on Foata normal form. 1/379 useless extension candidates. Maximal degree in co-relation 1374. Up to 358 conditions per place. [2024-06-27 23:50:16,598 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 38 selfloop transitions, 12 changer transitions 0/52 dead transitions. [2024-06-27 23:50:16,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 52 transitions, 388 flow [2024-06-27 23:50:16,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:50:16,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:50:16,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 72 transitions. [2024-06-27 23:50:16,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3317972350230415 [2024-06-27 23:50:16,600 INFO L175 Difference]: Start difference. First operand has 53 places, 42 transitions, 257 flow. Second operand 7 states and 72 transitions. [2024-06-27 23:50:16,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 52 transitions, 388 flow [2024-06-27 23:50:16,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 52 transitions, 342 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-27 23:50:16,602 INFO L231 Difference]: Finished difference. Result has 57 places, 46 transitions, 266 flow [2024-06-27 23:50:16,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=266, PETRI_PLACES=57, PETRI_TRANSITIONS=46} [2024-06-27 23:50:16,603 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 27 predicate places. [2024-06-27 23:50:16,603 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 46 transitions, 266 flow [2024-06-27 23:50:16,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:50:16,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:50:16,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:50:16,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 23:50:16,603 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:50:16,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:50:16,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1399700031, now seen corresponding path program 1 times [2024-06-27 23:50:16,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:50:16,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086223267] [2024-06-27 23:50:16,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:50:16,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:50:16,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:50:17,172 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 23:50:17,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:50:17,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086223267] [2024-06-27 23:50:17,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086223267] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:50:17,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:50:17,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:50:17,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015980994] [2024-06-27 23:50:17,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:50:17,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:50:17,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:50:17,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:50:17,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:50:17,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:50:17,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 46 transitions, 266 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:50:17,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:50:17,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:50:17,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:50:17,348 INFO L124 PetriNetUnfolderBase]: 189/361 cut-off events. [2024-06-27 23:50:17,349 INFO L125 PetriNetUnfolderBase]: For 1763/1763 co-relation queries the response was YES. [2024-06-27 23:50:17,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1371 conditions, 361 events. 189/361 cut-off events. For 1763/1763 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1353 event pairs, 48 based on Foata normal form. 1/362 useless extension candidates. Maximal degree in co-relation 1343. Up to 292 conditions per place. [2024-06-27 23:50:17,351 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 44 selfloop transitions, 18 changer transitions 0/66 dead transitions. [2024-06-27 23:50:17,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 66 transitions, 458 flow [2024-06-27 23:50:17,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:50:17,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:50:17,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 88 transitions. [2024-06-27 23:50:17,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4055299539170507 [2024-06-27 23:50:17,352 INFO L175 Difference]: Start difference. First operand has 57 places, 46 transitions, 266 flow. Second operand 7 states and 88 transitions. [2024-06-27 23:50:17,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 66 transitions, 458 flow [2024-06-27 23:50:17,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 66 transitions, 435 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-27 23:50:17,355 INFO L231 Difference]: Finished difference. Result has 61 places, 53 transitions, 326 flow [2024-06-27 23:50:17,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=326, PETRI_PLACES=61, PETRI_TRANSITIONS=53} [2024-06-27 23:50:17,355 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 31 predicate places. [2024-06-27 23:50:17,356 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 53 transitions, 326 flow [2024-06-27 23:50:17,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:50:17,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:50:17,356 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:50:17,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 23:50:17,356 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:50:17,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:50:17,357 INFO L85 PathProgramCache]: Analyzing trace with hash 906233859, now seen corresponding path program 2 times [2024-06-27 23:50:17,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:50:17,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255754280] [2024-06-27 23:50:17,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:50:17,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:50:17,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:50:17,951 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 23:50:17,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:50:17,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255754280] [2024-06-27 23:50:17,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255754280] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:50:17,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:50:17,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:50:17,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189932590] [2024-06-27 23:50:17,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:50:17,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:50:17,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:50:17,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:50:17,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:50:18,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:50:18,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 53 transitions, 326 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:50:18,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:50:18,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:50:18,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:50:18,214 INFO L124 PetriNetUnfolderBase]: 200/380 cut-off events. [2024-06-27 23:50:18,214 INFO L125 PetriNetUnfolderBase]: For 2170/2170 co-relation queries the response was YES. [2024-06-27 23:50:18,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1552 conditions, 380 events. 200/380 cut-off events. For 2170/2170 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1448 event pairs, 45 based on Foata normal form. 1/381 useless extension candidates. Maximal degree in co-relation 1523. Up to 304 conditions per place. [2024-06-27 23:50:18,216 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 47 selfloop transitions, 20 changer transitions 0/71 dead transitions. [2024-06-27 23:50:18,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 71 transitions, 540 flow [2024-06-27 23:50:18,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:50:18,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:50:18,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 89 transitions. [2024-06-27 23:50:18,218 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41013824884792627 [2024-06-27 23:50:18,218 INFO L175 Difference]: Start difference. First operand has 61 places, 53 transitions, 326 flow. Second operand 7 states and 89 transitions. [2024-06-27 23:50:18,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 71 transitions, 540 flow [2024-06-27 23:50:18,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 71 transitions, 524 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-06-27 23:50:18,221 INFO L231 Difference]: Finished difference. Result has 69 places, 60 transitions, 425 flow [2024-06-27 23:50:18,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=425, PETRI_PLACES=69, PETRI_TRANSITIONS=60} [2024-06-27 23:50:18,221 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 39 predicate places. [2024-06-27 23:50:18,222 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 60 transitions, 425 flow [2024-06-27 23:50:18,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:50:18,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:50:18,222 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:50:18,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 23:50:18,222 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:50:18,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:50:18,223 INFO L85 PathProgramCache]: Analyzing trace with hash 906238509, now seen corresponding path program 3 times [2024-06-27 23:50:18,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:50:18,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107421494] [2024-06-27 23:50:18,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:50:18,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:50:18,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:50:18,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:50:18,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:50:18,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107421494] [2024-06-27 23:50:18,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107421494] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:50:18,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:50:18,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:50:18,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706385825] [2024-06-27 23:50:18,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:50:18,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:50:18,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:50:18,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:50:18,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:50:18,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:50:18,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 60 transitions, 425 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:50:18,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:50:18,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:50:18,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:50:19,156 INFO L124 PetriNetUnfolderBase]: 208/395 cut-off events. [2024-06-27 23:50:19,156 INFO L125 PetriNetUnfolderBase]: For 2806/2806 co-relation queries the response was YES. [2024-06-27 23:50:19,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1759 conditions, 395 events. 208/395 cut-off events. For 2806/2806 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1538 event pairs, 46 based on Foata normal form. 1/396 useless extension candidates. Maximal degree in co-relation 1726. Up to 304 conditions per place. [2024-06-27 23:50:19,158 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 45 selfloop transitions, 26 changer transitions 0/75 dead transitions. [2024-06-27 23:50:19,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 75 transitions, 655 flow [2024-06-27 23:50:19,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:50:19,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:50:19,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 91 transitions. [2024-06-27 23:50:19,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-27 23:50:19,160 INFO L175 Difference]: Start difference. First operand has 69 places, 60 transitions, 425 flow. Second operand 7 states and 91 transitions. [2024-06-27 23:50:19,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 75 transitions, 655 flow [2024-06-27 23:50:19,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 75 transitions, 623 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-06-27 23:50:19,164 INFO L231 Difference]: Finished difference. Result has 75 places, 64 transitions, 506 flow [2024-06-27 23:50:19,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=393, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=506, PETRI_PLACES=75, PETRI_TRANSITIONS=64} [2024-06-27 23:50:19,165 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 45 predicate places. [2024-06-27 23:50:19,165 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 64 transitions, 506 flow [2024-06-27 23:50:19,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:50:19,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:50:19,165 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:50:19,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 23:50:19,165 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:50:19,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:50:19,166 INFO L85 PathProgramCache]: Analyzing trace with hash 156029843, now seen corresponding path program 4 times [2024-06-27 23:50:19,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:50:19,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74365568] [2024-06-27 23:50:19,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:50:19,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:50:19,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:50:19,820 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 23:50:19,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:50:19,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74365568] [2024-06-27 23:50:19,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74365568] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:50:19,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:50:19,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:50:19,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378419385] [2024-06-27 23:50:19,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:50:19,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:50:19,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:50:19,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:50:19,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:50:19,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:50:19,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 64 transitions, 506 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:50:19,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:50:19,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:50:19,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:50:20,099 INFO L124 PetriNetUnfolderBase]: 211/400 cut-off events. [2024-06-27 23:50:20,099 INFO L125 PetriNetUnfolderBase]: For 3447/3447 co-relation queries the response was YES. [2024-06-27 23:50:20,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1908 conditions, 400 events. 211/400 cut-off events. For 3447/3447 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1553 event pairs, 50 based on Foata normal form. 1/401 useless extension candidates. Maximal degree in co-relation 1873. Up to 322 conditions per place. [2024-06-27 23:50:20,102 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 50 selfloop transitions, 22 changer transitions 0/76 dead transitions. [2024-06-27 23:50:20,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 76 transitions, 715 flow [2024-06-27 23:50:20,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:50:20,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:50:20,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 87 transitions. [2024-06-27 23:50:20,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4009216589861751 [2024-06-27 23:50:20,103 INFO L175 Difference]: Start difference. First operand has 75 places, 64 transitions, 506 flow. Second operand 7 states and 87 transitions. [2024-06-27 23:50:20,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 76 transitions, 715 flow [2024-06-27 23:50:20,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 76 transitions, 677 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-27 23:50:20,109 INFO L231 Difference]: Finished difference. Result has 80 places, 68 transitions, 569 flow [2024-06-27 23:50:20,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=469, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=569, PETRI_PLACES=80, PETRI_TRANSITIONS=68} [2024-06-27 23:50:20,109 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 50 predicate places. [2024-06-27 23:50:20,109 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 68 transitions, 569 flow [2024-06-27 23:50:20,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:50:20,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:50:20,110 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:50:20,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 23:50:20,110 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:50:20,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:50:20,111 INFO L85 PathProgramCache]: Analyzing trace with hash 156149813, now seen corresponding path program 5 times [2024-06-27 23:50:20,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:50:20,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104076401] [2024-06-27 23:50:20,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:50:20,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:50:20,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:50:20,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:50:20,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:50:20,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104076401] [2024-06-27 23:50:20,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104076401] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:50:20,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:50:20,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:50:20,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046897979] [2024-06-27 23:50:20,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:50:20,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:50:20,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:50:20,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:50:20,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:50:20,910 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:50:20,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 68 transitions, 569 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:50:20,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:50:20,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:50:20,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:50:21,178 INFO L124 PetriNetUnfolderBase]: 219/415 cut-off events. [2024-06-27 23:50:21,179 INFO L125 PetriNetUnfolderBase]: For 4153/4153 co-relation queries the response was YES. [2024-06-27 23:50:21,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2101 conditions, 415 events. 219/415 cut-off events. For 4153/4153 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1620 event pairs, 50 based on Foata normal form. 1/416 useless extension candidates. Maximal degree in co-relation 2062. Up to 325 conditions per place. [2024-06-27 23:50:21,181 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 50 selfloop transitions, 26 changer transitions 0/80 dead transitions. [2024-06-27 23:50:21,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 80 transitions, 819 flow [2024-06-27 23:50:21,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:50:21,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:50:21,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-27 23:50:21,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-27 23:50:21,183 INFO L175 Difference]: Start difference. First operand has 80 places, 68 transitions, 569 flow. Second operand 8 states and 96 transitions. [2024-06-27 23:50:21,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 80 transitions, 819 flow [2024-06-27 23:50:21,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 80 transitions, 784 flow, removed 11 selfloop flow, removed 1 redundant places. [2024-06-27 23:50:21,188 INFO L231 Difference]: Finished difference. Result has 88 places, 72 transitions, 658 flow [2024-06-27 23:50:21,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=534, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=658, PETRI_PLACES=88, PETRI_TRANSITIONS=72} [2024-06-27 23:50:21,189 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 58 predicate places. [2024-06-27 23:50:21,189 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 72 transitions, 658 flow [2024-06-27 23:50:21,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:50:21,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:50:21,189 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:50:21,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 23:50:21,190 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:50:21,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:50:21,190 INFO L85 PathProgramCache]: Analyzing trace with hash 333281333, now seen corresponding path program 6 times [2024-06-27 23:50:21,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:50:21,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090369302] [2024-06-27 23:50:21,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:50:21,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:50:21,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:50:21,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:50:21,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:50:21,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090369302] [2024-06-27 23:50:21,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090369302] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:50:21,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:50:21,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:50:21,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537482880] [2024-06-27 23:50:21,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:50:21,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:50:21,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:50:21,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:50:21,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:50:22,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:50:22,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 72 transitions, 658 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:50:22,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:50:22,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:50:22,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:50:22,169 INFO L124 PetriNetUnfolderBase]: 217/413 cut-off events. [2024-06-27 23:50:22,169 INFO L125 PetriNetUnfolderBase]: For 4928/4928 co-relation queries the response was YES. [2024-06-27 23:50:22,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2173 conditions, 413 events. 217/413 cut-off events. For 4928/4928 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1624 event pairs, 55 based on Foata normal form. 1/414 useless extension candidates. Maximal degree in co-relation 2130. Up to 295 conditions per place. [2024-06-27 23:50:22,172 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 37 selfloop transitions, 40 changer transitions 0/81 dead transitions. [2024-06-27 23:50:22,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 81 transitions, 888 flow [2024-06-27 23:50:22,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:50:22,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:50:22,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 88 transitions. [2024-06-27 23:50:22,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4055299539170507 [2024-06-27 23:50:22,173 INFO L175 Difference]: Start difference. First operand has 88 places, 72 transitions, 658 flow. Second operand 7 states and 88 transitions. [2024-06-27 23:50:22,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 81 transitions, 888 flow [2024-06-27 23:50:22,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 81 transitions, 841 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-27 23:50:22,180 INFO L231 Difference]: Finished difference. Result has 92 places, 74 transitions, 732 flow [2024-06-27 23:50:22,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=611, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=732, PETRI_PLACES=92, PETRI_TRANSITIONS=74} [2024-06-27 23:50:22,180 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 62 predicate places. [2024-06-27 23:50:22,180 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 74 transitions, 732 flow [2024-06-27 23:50:22,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:50:22,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:50:22,181 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:50:22,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 23:50:22,181 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:50:22,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:50:22,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1385410755, now seen corresponding path program 1 times [2024-06-27 23:50:22,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:50:22,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116909507] [2024-06-27 23:50:22,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:50:22,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:50:22,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:50:23,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:50:23,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:50:23,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116909507] [2024-06-27 23:50:23,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116909507] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:50:23,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:50:23,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:50:23,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245603262] [2024-06-27 23:50:23,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:50:23,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:50:23,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:50:23,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:50:23,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:50:23,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:50:23,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 74 transitions, 732 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states 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 23:50:23,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:50:23,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:50:23,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:50:23,564 INFO L124 PetriNetUnfolderBase]: 265/474 cut-off events. [2024-06-27 23:50:23,564 INFO L125 PetriNetUnfolderBase]: For 5998/5998 co-relation queries the response was YES. [2024-06-27 23:50:23,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2595 conditions, 474 events. 265/474 cut-off events. For 5998/5998 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1802 event pairs, 105 based on Foata normal form. 1/475 useless extension candidates. Maximal degree in co-relation 2550. Up to 449 conditions per place. [2024-06-27 23:50:23,568 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 67 selfloop transitions, 14 changer transitions 0/83 dead transitions. [2024-06-27 23:50:23,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 83 transitions, 920 flow [2024-06-27 23:50:23,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:50:23,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:50:23,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 80 transitions. [2024-06-27 23:50:23,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-27 23:50:23,569 INFO L175 Difference]: Start difference. First operand has 92 places, 74 transitions, 732 flow. Second operand 8 states and 80 transitions. [2024-06-27 23:50:23,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 83 transitions, 920 flow [2024-06-27 23:50:23,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 83 transitions, 815 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-27 23:50:23,576 INFO L231 Difference]: Finished difference. Result has 95 places, 76 transitions, 674 flow [2024-06-27 23:50:23,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=627, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=674, PETRI_PLACES=95, PETRI_TRANSITIONS=76} [2024-06-27 23:50:23,577 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 65 predicate places. [2024-06-27 23:50:23,577 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 76 transitions, 674 flow [2024-06-27 23:50:23,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states 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 23:50:23,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:50:23,578 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:50:23,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 23:50:23,578 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:50:23,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:50:23,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1821734986, now seen corresponding path program 1 times [2024-06-27 23:50:23,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:50:23,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404058142] [2024-06-27 23:50:23,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:50:23,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:50:23,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:50:24,276 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 23:50:24,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:50:24,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404058142] [2024-06-27 23:50:24,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404058142] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:50:24,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:50:24,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:50:24,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829244621] [2024-06-27 23:50:24,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:50:24,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:50:24,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:50:24,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:50:24,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:50:24,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:50:24,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 76 transitions, 674 flow. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states 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 23:50:24,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:50:24,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:50:24,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:50:24,506 INFO L124 PetriNetUnfolderBase]: 203/402 cut-off events. [2024-06-27 23:50:24,507 INFO L125 PetriNetUnfolderBase]: For 5540/5544 co-relation queries the response was YES. [2024-06-27 23:50:24,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2199 conditions, 402 events. 203/402 cut-off events. For 5540/5544 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1670 event pairs, 43 based on Foata normal form. 5/406 useless extension candidates. Maximal degree in co-relation 2153. Up to 306 conditions per place. [2024-06-27 23:50:24,509 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 47 selfloop transitions, 31 changer transitions 0/89 dead transitions. [2024-06-27 23:50:24,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 89 transitions, 901 flow [2024-06-27 23:50:24,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:50:24,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:50:24,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 90 transitions. [2024-06-27 23:50:24,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147465437788018 [2024-06-27 23:50:24,511 INFO L175 Difference]: Start difference. First operand has 95 places, 76 transitions, 674 flow. Second operand 7 states and 90 transitions. [2024-06-27 23:50:24,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 89 transitions, 901 flow [2024-06-27 23:50:24,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 89 transitions, 870 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-27 23:50:24,517 INFO L231 Difference]: Finished difference. Result has 96 places, 80 transitions, 771 flow [2024-06-27 23:50:24,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=643, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=771, PETRI_PLACES=96, PETRI_TRANSITIONS=80} [2024-06-27 23:50:24,517 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 66 predicate places. [2024-06-27 23:50:24,517 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 80 transitions, 771 flow [2024-06-27 23:50:24,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states 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 23:50:24,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:50:24,518 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:50:24,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 23:50:24,518 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:50:24,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:50:24,519 INFO L85 PathProgramCache]: Analyzing trace with hash 858476974, now seen corresponding path program 2 times [2024-06-27 23:50:24,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:50:24,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60935889] [2024-06-27 23:50:24,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:50:24,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:50:24,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:50:25,322 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 23:50:25,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:50:25,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60935889] [2024-06-27 23:50:25,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60935889] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:50:25,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:50:25,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:50:25,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395283007] [2024-06-27 23:50:25,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:50:25,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:50:25,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:50:25,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:50:25,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:50:25,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:50:25,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 80 transitions, 771 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states 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 23:50:25,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:50:25,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:50:25,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:50:25,618 INFO L124 PetriNetUnfolderBase]: 229/437 cut-off events. [2024-06-27 23:50:25,618 INFO L125 PetriNetUnfolderBase]: For 6479/6479 co-relation queries the response was YES. [2024-06-27 23:50:25,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2488 conditions, 437 events. 229/437 cut-off events. For 6479/6479 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1779 event pairs, 49 based on Foata normal form. 1/438 useless extension candidates. Maximal degree in co-relation 2441. Up to 346 conditions per place. [2024-06-27 23:50:25,621 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 64 selfloop transitions, 30 changer transitions 0/98 dead transitions. [2024-06-27 23:50:25,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 98 transitions, 1052 flow [2024-06-27 23:50:25,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:50:25,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:50:25,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 99 transitions. [2024-06-27 23:50:25,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39919354838709675 [2024-06-27 23:50:25,622 INFO L175 Difference]: Start difference. First operand has 96 places, 80 transitions, 771 flow. Second operand 8 states and 99 transitions. [2024-06-27 23:50:25,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 98 transitions, 1052 flow [2024-06-27 23:50:25,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 98 transitions, 1021 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-27 23:50:25,630 INFO L231 Difference]: Finished difference. Result has 102 places, 84 transitions, 867 flow [2024-06-27 23:50:25,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=742, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=867, PETRI_PLACES=102, PETRI_TRANSITIONS=84} [2024-06-27 23:50:25,630 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 72 predicate places. [2024-06-27 23:50:25,630 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 84 transitions, 867 flow [2024-06-27 23:50:25,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states 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 23:50:25,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:50:25,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:50:25,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 23:50:25,631 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:50:25,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:50:25,631 INFO L85 PathProgramCache]: Analyzing trace with hash 865981144, now seen corresponding path program 3 times [2024-06-27 23:50:25,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:50:25,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215230944] [2024-06-27 23:50:25,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:50:25,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:50:25,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:50:26,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:50:26,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:50:26,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215230944] [2024-06-27 23:50:26,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215230944] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:50:26,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:50:26,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:50:26,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906504992] [2024-06-27 23:50:26,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:50:26,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:50:26,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:50:26,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:50:26,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:50:26,616 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:50:26,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 84 transitions, 867 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states 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 23:50:26,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:50:26,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:50:26,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:50:26,833 INFO L124 PetriNetUnfolderBase]: 232/443 cut-off events. [2024-06-27 23:50:26,834 INFO L125 PetriNetUnfolderBase]: For 7361/7361 co-relation queries the response was YES. [2024-06-27 23:50:26,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2588 conditions, 443 events. 232/443 cut-off events. For 7361/7361 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1800 event pairs, 49 based on Foata normal form. 1/444 useless extension candidates. Maximal degree in co-relation 2540. Up to 351 conditions per place. [2024-06-27 23:50:26,836 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 64 selfloop transitions, 30 changer transitions 0/98 dead transitions. [2024-06-27 23:50:26,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 98 transitions, 1117 flow [2024-06-27 23:50:26,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:50:26,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:50:26,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 95 transitions. [2024-06-27 23:50:26,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38306451612903225 [2024-06-27 23:50:26,837 INFO L175 Difference]: Start difference. First operand has 102 places, 84 transitions, 867 flow. Second operand 8 states and 95 transitions. [2024-06-27 23:50:26,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 98 transitions, 1117 flow [2024-06-27 23:50:26,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 98 transitions, 1051 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-27 23:50:26,845 INFO L231 Difference]: Finished difference. Result has 105 places, 86 transitions, 901 flow [2024-06-27 23:50:26,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=801, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=901, PETRI_PLACES=105, PETRI_TRANSITIONS=86} [2024-06-27 23:50:26,846 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 75 predicate places. [2024-06-27 23:50:26,846 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 86 transitions, 901 flow [2024-06-27 23:50:26,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states 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 23:50:26,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:50:26,846 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:50:26,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 23:50:26,847 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:50:26,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:50:26,847 INFO L85 PathProgramCache]: Analyzing trace with hash -2081539160, now seen corresponding path program 4 times [2024-06-27 23:50:26,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:50:26,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709238524] [2024-06-27 23:50:26,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:50:26,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:50:26,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:50:27,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:50:27,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:50:27,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709238524] [2024-06-27 23:50:27,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709238524] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:50:27,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:50:27,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:50:27,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213875378] [2024-06-27 23:50:27,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:50:27,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:50:27,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:50:27,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:50:27,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:50:27,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:50:27,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 86 transitions, 901 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states 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 23:50:27,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:50:27,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:50:27,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:50:27,963 INFO L124 PetriNetUnfolderBase]: 233/444 cut-off events. [2024-06-27 23:50:27,964 INFO L125 PetriNetUnfolderBase]: For 8031/8031 co-relation queries the response was YES. [2024-06-27 23:50:27,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2645 conditions, 444 events. 233/444 cut-off events. For 8031/8031 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1802 event pairs, 45 based on Foata normal form. 2/446 useless extension candidates. Maximal degree in co-relation 2595. Up to 350 conditions per place. [2024-06-27 23:50:27,967 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 68 selfloop transitions, 27 changer transitions 0/99 dead transitions. [2024-06-27 23:50:27,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 99 transitions, 1155 flow [2024-06-27 23:50:27,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:50:27,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:50:27,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 91 transitions. [2024-06-27 23:50:27,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-27 23:50:27,968 INFO L175 Difference]: Start difference. First operand has 105 places, 86 transitions, 901 flow. Second operand 7 states and 91 transitions. [2024-06-27 23:50:27,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 99 transitions, 1155 flow [2024-06-27 23:50:27,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 99 transitions, 1071 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-27 23:50:27,978 INFO L231 Difference]: Finished difference. Result has 106 places, 88 transitions, 918 flow [2024-06-27 23:50:27,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=817, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=918, PETRI_PLACES=106, PETRI_TRANSITIONS=88} [2024-06-27 23:50:27,979 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 76 predicate places. [2024-06-27 23:50:27,979 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 88 transitions, 918 flow [2024-06-27 23:50:27,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states 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 23:50:27,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:50:27,979 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:50:27,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 23:50:27,980 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:50:27,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:50:27,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1971370058, now seen corresponding path program 1 times [2024-06-27 23:50:27,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:50:27,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685384653] [2024-06-27 23:50:27,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:50:27,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:50:27,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:50:28,749 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 23:50:28,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:50:28,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685384653] [2024-06-27 23:50:28,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685384653] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:50:28,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:50:28,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:50:28,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138807252] [2024-06-27 23:50:28,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:50:28,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:50:28,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:50:28,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:50:28,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:50:28,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:50:28,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 88 transitions, 918 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states 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 23:50:28,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:50:28,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:50:28,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:50:28,986 INFO L124 PetriNetUnfolderBase]: 296/527 cut-off events. [2024-06-27 23:50:28,987 INFO L125 PetriNetUnfolderBase]: For 9476/9476 co-relation queries the response was YES. [2024-06-27 23:50:28,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3094 conditions, 527 events. 296/527 cut-off events. For 9476/9476 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2070 event pairs, 92 based on Foata normal form. 1/528 useless extension candidates. Maximal degree in co-relation 3044. Up to 494 conditions per place. [2024-06-27 23:50:28,990 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 85 selfloop transitions, 16 changer transitions 0/103 dead transitions. [2024-06-27 23:50:28,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 103 transitions, 1174 flow [2024-06-27 23:50:28,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:50:28,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:50:28,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 86 transitions. [2024-06-27 23:50:28,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3467741935483871 [2024-06-27 23:50:28,992 INFO L175 Difference]: Start difference. First operand has 106 places, 88 transitions, 918 flow. Second operand 8 states and 86 transitions. [2024-06-27 23:50:28,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 103 transitions, 1174 flow [2024-06-27 23:50:29,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 103 transitions, 1109 flow, removed 16 selfloop flow, removed 3 redundant places. [2024-06-27 23:50:29,004 INFO L231 Difference]: Finished difference. Result has 112 places, 92 transitions, 925 flow [2024-06-27 23:50:29,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=853, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=925, PETRI_PLACES=112, PETRI_TRANSITIONS=92} [2024-06-27 23:50:29,005 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 82 predicate places. [2024-06-27 23:50:29,005 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 92 transitions, 925 flow [2024-06-27 23:50:29,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states 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 23:50:29,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:50:29,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:50:29,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 23:50:29,006 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:50:29,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:50:29,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1546428800, now seen corresponding path program 5 times [2024-06-27 23:50:29,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:50:29,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814703458] [2024-06-27 23:50:29,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:50:29,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:50:29,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:50:30,024 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 23:50:30,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:50:30,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814703458] [2024-06-27 23:50:30,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814703458] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:50:30,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:50:30,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:50:30,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312012573] [2024-06-27 23:50:30,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:50:30,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:50:30,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:50:30,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:50:30,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:50:30,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:50:30,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 92 transitions, 925 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states 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 23:50:30,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:50:30,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:50:30,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:50:30,256 INFO L124 PetriNetUnfolderBase]: 241/458 cut-off events. [2024-06-27 23:50:30,256 INFO L125 PetriNetUnfolderBase]: For 9263/9271 co-relation queries the response was YES. [2024-06-27 23:50:30,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2807 conditions, 458 events. 241/458 cut-off events. For 9263/9271 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1868 event pairs, 48 based on Foata normal form. 3/461 useless extension candidates. Maximal degree in co-relation 2755. Up to 339 conditions per place. [2024-06-27 23:50:30,260 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 60 selfloop transitions, 39 changer transitions 0/104 dead transitions. [2024-06-27 23:50:30,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 104 transitions, 1187 flow [2024-06-27 23:50:30,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:50:30,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:50:30,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 91 transitions. [2024-06-27 23:50:30,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-27 23:50:30,261 INFO L175 Difference]: Start difference. First operand has 112 places, 92 transitions, 925 flow. Second operand 7 states and 91 transitions. [2024-06-27 23:50:30,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 104 transitions, 1187 flow [2024-06-27 23:50:30,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 104 transitions, 1148 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-27 23:50:30,271 INFO L231 Difference]: Finished difference. Result has 114 places, 94 transitions, 1013 flow [2024-06-27 23:50:30,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=886, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1013, PETRI_PLACES=114, PETRI_TRANSITIONS=94} [2024-06-27 23:50:30,271 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 84 predicate places. [2024-06-27 23:50:30,271 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 94 transitions, 1013 flow [2024-06-27 23:50:30,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states 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 23:50:30,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:50:30,272 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:50:30,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 23:50:30,272 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:50:30,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:50:30,272 INFO L85 PathProgramCache]: Analyzing trace with hash 325269062, now seen corresponding path program 6 times [2024-06-27 23:50:30,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:50:30,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263440245] [2024-06-27 23:50:30,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:50:30,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:50:30,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:50:31,192 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 23:50:31,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:50:31,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263440245] [2024-06-27 23:50:31,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263440245] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:50:31,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:50:31,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:50:31,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92134895] [2024-06-27 23:50:31,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:50:31,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:50:31,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:50:31,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:50:31,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:50:31,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:50:31,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 94 transitions, 1013 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states 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 23:50:31,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:50:31,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:50:31,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:50:31,513 INFO L124 PetriNetUnfolderBase]: 239/455 cut-off events. [2024-06-27 23:50:31,513 INFO L125 PetriNetUnfolderBase]: For 10095/10103 co-relation queries the response was YES. [2024-06-27 23:50:31,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2871 conditions, 455 events. 239/455 cut-off events. For 10095/10103 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1864 event pairs, 51 based on Foata normal form. 3/458 useless extension candidates. Maximal degree in co-relation 2818. Up to 362 conditions per place. [2024-06-27 23:50:31,516 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 70 selfloop transitions, 27 changer transitions 0/102 dead transitions. [2024-06-27 23:50:31,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 102 transitions, 1229 flow [2024-06-27 23:50:31,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:50:31,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:50:31,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 88 transitions. [2024-06-27 23:50:31,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4055299539170507 [2024-06-27 23:50:31,518 INFO L175 Difference]: Start difference. First operand has 114 places, 94 transitions, 1013 flow. Second operand 7 states and 88 transitions. [2024-06-27 23:50:31,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 102 transitions, 1229 flow [2024-06-27 23:50:31,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 102 transitions, 1112 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-27 23:50:31,530 INFO L231 Difference]: Finished difference. Result has 116 places, 94 transitions, 958 flow [2024-06-27 23:50:31,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=896, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=958, PETRI_PLACES=116, PETRI_TRANSITIONS=94} [2024-06-27 23:50:31,531 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 86 predicate places. [2024-06-27 23:50:31,531 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 94 transitions, 958 flow [2024-06-27 23:50:31,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states 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 23:50:31,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:50:31,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:50:31,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 23:50:31,532 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:50:31,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:50:31,532 INFO L85 PathProgramCache]: Analyzing trace with hash 541959120, now seen corresponding path program 7 times [2024-06-27 23:50:31,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:50:31,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39675571] [2024-06-27 23:50:31,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:50:31,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:50:31,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:50:32,504 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 23:50:32,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:50:32,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39675571] [2024-06-27 23:50:32,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39675571] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:50:32,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:50:32,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:50:32,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641558608] [2024-06-27 23:50:32,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:50:32,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:50:32,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:50:32,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:50:32,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:50:32,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:50:32,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 94 transitions, 958 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states 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 23:50:32,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:50:32,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:50:32,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:50:32,863 INFO L124 PetriNetUnfolderBase]: 242/460 cut-off events. [2024-06-27 23:50:32,864 INFO L125 PetriNetUnfolderBase]: For 10589/10593 co-relation queries the response was YES. [2024-06-27 23:50:32,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2894 conditions, 460 events. 242/460 cut-off events. For 10589/10593 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1877 event pairs, 51 based on Foata normal form. 1/461 useless extension candidates. Maximal degree in co-relation 2839. Up to 367 conditions per place. [2024-06-27 23:50:32,867 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 72 selfloop transitions, 27 changer transitions 0/104 dead transitions. [2024-06-27 23:50:32,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 104 transitions, 1220 flow [2024-06-27 23:50:32,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:50:32,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:50:32,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 88 transitions. [2024-06-27 23:50:32,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4055299539170507 [2024-06-27 23:50:32,869 INFO L175 Difference]: Start difference. First operand has 116 places, 94 transitions, 958 flow. Second operand 7 states and 88 transitions. [2024-06-27 23:50:32,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 104 transitions, 1220 flow [2024-06-27 23:50:32,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 104 transitions, 1167 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-06-27 23:50:32,882 INFO L231 Difference]: Finished difference. Result has 118 places, 96 transitions, 1011 flow [2024-06-27 23:50:32,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=905, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1011, PETRI_PLACES=118, PETRI_TRANSITIONS=96} [2024-06-27 23:50:32,882 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 88 predicate places. [2024-06-27 23:50:32,882 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 96 transitions, 1011 flow [2024-06-27 23:50:32,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states 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 23:50:32,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:50:32,883 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:50:32,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 23:50:32,883 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:50:32,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:50:32,883 INFO L85 PathProgramCache]: Analyzing trace with hash 329078342, now seen corresponding path program 8 times [2024-06-27 23:50:32,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:50:32,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413389819] [2024-06-27 23:50:32,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:50:32,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:50:32,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:50:34,008 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 23:50:34,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:50:34,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413389819] [2024-06-27 23:50:34,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413389819] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:50:34,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:50:34,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:50:34,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670442548] [2024-06-27 23:50:34,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:50:34,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:50:34,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:50:34,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:50:34,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:50:34,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:50:34,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 96 transitions, 1011 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states 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 23:50:34,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:50:34,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:50:34,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:50:34,341 INFO L124 PetriNetUnfolderBase]: 245/465 cut-off events. [2024-06-27 23:50:34,342 INFO L125 PetriNetUnfolderBase]: For 11726/11730 co-relation queries the response was YES. [2024-06-27 23:50:34,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3012 conditions, 465 events. 245/465 cut-off events. For 11726/11730 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1918 event pairs, 51 based on Foata normal form. 5/470 useless extension candidates. Maximal degree in co-relation 2955. Up to 360 conditions per place. [2024-06-27 23:50:34,346 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 68 selfloop transitions, 32 changer transitions 0/105 dead transitions. [2024-06-27 23:50:34,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 105 transitions, 1275 flow [2024-06-27 23:50:34,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:50:34,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:50:34,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-27 23:50:34,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-27 23:50:34,352 INFO L175 Difference]: Start difference. First operand has 118 places, 96 transitions, 1011 flow. Second operand 8 states and 96 transitions. [2024-06-27 23:50:34,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 105 transitions, 1275 flow [2024-06-27 23:50:34,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 105 transitions, 1186 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-27 23:50:34,365 INFO L231 Difference]: Finished difference. Result has 120 places, 98 transitions, 1042 flow [2024-06-27 23:50:34,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=922, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1042, PETRI_PLACES=120, PETRI_TRANSITIONS=98} [2024-06-27 23:50:34,365 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 90 predicate places. [2024-06-27 23:50:34,365 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 98 transitions, 1042 flow [2024-06-27 23:50:34,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states 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 23:50:34,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:50:34,366 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:50:34,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 23:50:34,366 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:50:34,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:50:34,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1542492176, now seen corresponding path program 2 times [2024-06-27 23:50:34,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:50:34,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200173607] [2024-06-27 23:50:34,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:50:34,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:50:34,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:50:35,174 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 23:50:35,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:50:35,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200173607] [2024-06-27 23:50:35,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200173607] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:50:35,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:50:35,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:50:35,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291522919] [2024-06-27 23:50:35,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:50:35,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:50:35,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:50:35,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:50:35,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:50:35,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:50:35,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 98 transitions, 1042 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states 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 23:50:35,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:50:35,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:50:35,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:50:35,436 INFO L124 PetriNetUnfolderBase]: 313/556 cut-off events. [2024-06-27 23:50:35,436 INFO L125 PetriNetUnfolderBase]: For 13691/13691 co-relation queries the response was YES. [2024-06-27 23:50:35,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3526 conditions, 556 events. 313/556 cut-off events. For 13691/13691 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2218 event pairs, 99 based on Foata normal form. 1/557 useless extension candidates. Maximal degree in co-relation 3469. Up to 523 conditions per place. [2024-06-27 23:50:35,444 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 91 selfloop transitions, 17 changer transitions 0/110 dead transitions. [2024-06-27 23:50:35,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 110 transitions, 1312 flow [2024-06-27 23:50:35,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:50:35,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:50:35,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 83 transitions. [2024-06-27 23:50:35,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3346774193548387 [2024-06-27 23:50:35,446 INFO L175 Difference]: Start difference. First operand has 120 places, 98 transitions, 1042 flow. Second operand 8 states and 83 transitions. [2024-06-27 23:50:35,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 110 transitions, 1312 flow [2024-06-27 23:50:35,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 110 transitions, 1211 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-27 23:50:35,459 INFO L231 Difference]: Finished difference. Result has 123 places, 102 transitions, 1023 flow [2024-06-27 23:50:35,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=942, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1023, PETRI_PLACES=123, PETRI_TRANSITIONS=102} [2024-06-27 23:50:35,460 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 93 predicate places. [2024-06-27 23:50:35,460 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 102 transitions, 1023 flow [2024-06-27 23:50:35,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states 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 23:50:35,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:50:35,461 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:50:35,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 23:50:35,461 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:50:35,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:50:35,461 INFO L85 PathProgramCache]: Analyzing trace with hash 689568720, now seen corresponding path program 9 times [2024-06-27 23:50:35,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:50:35,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387672603] [2024-06-27 23:50:35,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:50:35,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:50:35,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:50:36,452 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 23:50:36,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:50:36,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387672603] [2024-06-27 23:50:36,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387672603] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:50:36,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:50:36,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:50:36,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094314314] [2024-06-27 23:50:36,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:50:36,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:50:36,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:50:36,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:50:36,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:50:36,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:50:36,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 102 transitions, 1023 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states 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 23:50:36,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:50:36,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:50:36,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:50:36,677 INFO L124 PetriNetUnfolderBase]: 252/477 cut-off events. [2024-06-27 23:50:36,677 INFO L125 PetriNetUnfolderBase]: For 12687/12687 co-relation queries the response was YES. [2024-06-27 23:50:36,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3083 conditions, 477 events. 252/477 cut-off events. For 12687/12687 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1975 event pairs, 57 based on Foata normal form. 1/478 useless extension candidates. Maximal degree in co-relation 3024. Up to 318 conditions per place. [2024-06-27 23:50:36,681 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 50 selfloop transitions, 54 changer transitions 0/110 dead transitions. [2024-06-27 23:50:36,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 110 transitions, 1295 flow [2024-06-27 23:50:36,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:50:36,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:50:36,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 88 transitions. [2024-06-27 23:50:36,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4055299539170507 [2024-06-27 23:50:36,682 INFO L175 Difference]: Start difference. First operand has 123 places, 102 transitions, 1023 flow. Second operand 7 states and 88 transitions. [2024-06-27 23:50:36,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 110 transitions, 1295 flow [2024-06-27 23:50:36,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 110 transitions, 1239 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-27 23:50:36,697 INFO L231 Difference]: Finished difference. Result has 125 places, 104 transitions, 1135 flow [2024-06-27 23:50:36,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=967, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1135, PETRI_PLACES=125, PETRI_TRANSITIONS=104} [2024-06-27 23:50:36,697 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 95 predicate places. [2024-06-27 23:50:36,698 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 104 transitions, 1135 flow [2024-06-27 23:50:36,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states 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 23:50:36,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:50:36,698 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:50:36,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 23:50:36,698 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:50:36,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:50:36,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1741793966, now seen corresponding path program 3 times [2024-06-27 23:50:36,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:50:36,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050219029] [2024-06-27 23:50:36,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:50:36,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:50:36,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:50:37,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:50:37,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:50:37,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050219029] [2024-06-27 23:50:37,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050219029] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:50:37,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:50:37,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:50:37,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637646789] [2024-06-27 23:50:37,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:50:37,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:50:37,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:50:37,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:50:37,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:50:37,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:50:37,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 104 transitions, 1135 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states 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 23:50:37,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:50:37,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:50:37,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:50:37,783 INFO L124 PetriNetUnfolderBase]: 315/560 cut-off events. [2024-06-27 23:50:37,784 INFO L125 PetriNetUnfolderBase]: For 14784/14784 co-relation queries the response was YES. [2024-06-27 23:50:37,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3644 conditions, 560 events. 315/560 cut-off events. For 14784/14784 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2243 event pairs, 96 based on Foata normal form. 1/561 useless extension candidates. Maximal degree in co-relation 3584. Up to 491 conditions per place. [2024-06-27 23:50:37,787 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 87 selfloop transitions, 30 changer transitions 0/119 dead transitions. [2024-06-27 23:50:37,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 119 transitions, 1508 flow [2024-06-27 23:50:37,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:50:37,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:50:37,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-27 23:50:37,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-27 23:50:37,789 INFO L175 Difference]: Start difference. First operand has 125 places, 104 transitions, 1135 flow. Second operand 8 states and 88 transitions. [2024-06-27 23:50:37,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 119 transitions, 1508 flow [2024-06-27 23:50:37,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 119 transitions, 1357 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-27 23:50:37,805 INFO L231 Difference]: Finished difference. Result has 130 places, 111 transitions, 1134 flow [2024-06-27 23:50:37,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=987, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1134, PETRI_PLACES=130, PETRI_TRANSITIONS=111} [2024-06-27 23:50:37,805 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 100 predicate places. [2024-06-27 23:50:37,806 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 111 transitions, 1134 flow [2024-06-27 23:50:37,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states 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 23:50:37,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:50:37,806 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:50:37,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 23:50:37,806 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:50:37,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:50:37,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1749412526, now seen corresponding path program 4 times [2024-06-27 23:50:37,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:50:37,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154230846] [2024-06-27 23:50:37,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:50:37,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:50:37,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:50:38,644 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 23:50:38,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:50:38,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154230846] [2024-06-27 23:50:38,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154230846] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:50:38,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:50:38,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:50:38,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037738000] [2024-06-27 23:50:38,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:50:38,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:50:38,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:50:38,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:50:38,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:50:38,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:50:38,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 111 transitions, 1134 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states 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 23:50:38,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:50:38,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:50:38,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:50:38,844 INFO L124 PetriNetUnfolderBase]: 318/565 cut-off events. [2024-06-27 23:50:38,844 INFO L125 PetriNetUnfolderBase]: For 15283/15283 co-relation queries the response was YES. [2024-06-27 23:50:38,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3675 conditions, 565 events. 318/565 cut-off events. For 15283/15283 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2259 event pairs, 98 based on Foata normal form. 1/566 useless extension candidates. Maximal degree in co-relation 3612. Up to 495 conditions per place. [2024-06-27 23:50:38,847 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 82 selfloop transitions, 38 changer transitions 0/122 dead transitions. [2024-06-27 23:50:38,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 122 transitions, 1487 flow [2024-06-27 23:50:38,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:50:38,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:50:38,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 86 transitions. [2024-06-27 23:50:38,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3467741935483871 [2024-06-27 23:50:38,848 INFO L175 Difference]: Start difference. First operand has 130 places, 111 transitions, 1134 flow. Second operand 8 states and 86 transitions. [2024-06-27 23:50:38,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 122 transitions, 1487 flow [2024-06-27 23:50:38,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 122 transitions, 1435 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-06-27 23:50:38,865 INFO L231 Difference]: Finished difference. Result has 135 places, 114 transitions, 1202 flow [2024-06-27 23:50:38,865 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1082, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1202, PETRI_PLACES=135, PETRI_TRANSITIONS=114} [2024-06-27 23:50:38,865 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 105 predicate places. [2024-06-27 23:50:38,866 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 114 transitions, 1202 flow [2024-06-27 23:50:38,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states 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 23:50:38,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:50:38,866 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:50:38,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 23:50:38,866 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:50:38,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:50:38,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1749145616, now seen corresponding path program 5 times [2024-06-27 23:50:38,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:50:38,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952008385] [2024-06-27 23:50:38,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:50:38,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:50:38,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:50:39,697 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 23:50:39,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:50:39,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952008385] [2024-06-27 23:50:39,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952008385] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:50:39,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:50:39,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:50:39,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909343612] [2024-06-27 23:50:39,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:50:39,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:50:39,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:50:39,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:50:39,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:50:39,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:50:39,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 114 transitions, 1202 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states 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 23:50:39,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:50:39,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:50:39,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:50:39,912 INFO L124 PetriNetUnfolderBase]: 316/562 cut-off events. [2024-06-27 23:50:39,913 INFO L125 PetriNetUnfolderBase]: For 15709/15709 co-relation queries the response was YES. [2024-06-27 23:50:39,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3705 conditions, 562 events. 316/562 cut-off events. For 15709/15709 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2261 event pairs, 94 based on Foata normal form. 1/563 useless extension candidates. Maximal degree in co-relation 3640. Up to 493 conditions per place. [2024-06-27 23:50:39,917 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 84 selfloop transitions, 35 changer transitions 0/121 dead transitions. [2024-06-27 23:50:39,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 121 transitions, 1456 flow [2024-06-27 23:50:39,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:50:39,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:50:39,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 86 transitions. [2024-06-27 23:50:39,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3467741935483871 [2024-06-27 23:50:39,919 INFO L175 Difference]: Start difference. First operand has 135 places, 114 transitions, 1202 flow. Second operand 8 states and 86 transitions. [2024-06-27 23:50:39,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 121 transitions, 1456 flow [2024-06-27 23:50:39,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 121 transitions, 1385 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-06-27 23:50:39,938 INFO L231 Difference]: Finished difference. Result has 140 places, 114 transitions, 1206 flow [2024-06-27 23:50:39,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1131, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1206, PETRI_PLACES=140, PETRI_TRANSITIONS=114} [2024-06-27 23:50:39,939 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 110 predicate places. [2024-06-27 23:50:39,939 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 114 transitions, 1206 flow [2024-06-27 23:50:39,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states 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 23:50:39,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:50:39,940 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:50:39,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 23:50:39,940 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:50:39,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:50:39,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1749422446, now seen corresponding path program 1 times [2024-06-27 23:50:39,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:50:39,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67282405] [2024-06-27 23:50:39,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:50:39,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:50:39,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:50:41,238 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 23:50:41,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:50:41,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67282405] [2024-06-27 23:50:41,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67282405] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:50:41,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:50:41,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:50:41,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471100833] [2024-06-27 23:50:41,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:50:41,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:50:41,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:50:41,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:50:41,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:50:41,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:50:41,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 114 transitions, 1206 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states 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 23:50:41,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:50:41,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:50:41,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:50:41,673 INFO L124 PetriNetUnfolderBase]: 314/560 cut-off events. [2024-06-27 23:50:41,673 INFO L125 PetriNetUnfolderBase]: For 16232/16232 co-relation queries the response was YES. [2024-06-27 23:50:41,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3686 conditions, 560 events. 314/560 cut-off events. For 16232/16232 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2263 event pairs, 109 based on Foata normal form. 1/561 useless extension candidates. Maximal degree in co-relation 3620. Up to 531 conditions per place. [2024-06-27 23:50:41,677 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 106 selfloop transitions, 16 changer transitions 0/124 dead transitions. [2024-06-27 23:50:41,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 124 transitions, 1480 flow [2024-06-27 23:50:41,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:50:41,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:50:41,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 93 transitions. [2024-06-27 23:50:41,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3 [2024-06-27 23:50:41,678 INFO L175 Difference]: Start difference. First operand has 140 places, 114 transitions, 1206 flow. Second operand 10 states and 93 transitions. [2024-06-27 23:50:41,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 124 transitions, 1480 flow [2024-06-27 23:50:41,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 124 transitions, 1399 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-27 23:50:41,697 INFO L231 Difference]: Finished difference. Result has 143 places, 116 transitions, 1178 flow [2024-06-27 23:50:41,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1125, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1178, PETRI_PLACES=143, PETRI_TRANSITIONS=116} [2024-06-27 23:50:41,697 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 113 predicate places. [2024-06-27 23:50:41,697 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 116 transitions, 1178 flow [2024-06-27 23:50:41,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states 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 23:50:41,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:50:41,698 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:50:41,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 23:50:41,698 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:50:41,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:50:41,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1099085290, now seen corresponding path program 1 times [2024-06-27 23:50:41,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:50:41,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343931061] [2024-06-27 23:50:41,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:50:41,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:50:41,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:50:42,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:50:42,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:50:42,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343931061] [2024-06-27 23:50:42,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343931061] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:50:42,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:50:42,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:50:42,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777626056] [2024-06-27 23:50:42,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:50:42,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:50:42,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:50:42,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:50:42,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:50:42,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-27 23:50:42,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 116 transitions, 1178 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:50:42,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:50:42,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-27 23:50:42,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:50:42,615 INFO L124 PetriNetUnfolderBase]: 224/469 cut-off events. [2024-06-27 23:50:42,616 INFO L125 PetriNetUnfolderBase]: For 16158/16162 co-relation queries the response was YES. [2024-06-27 23:50:42,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3084 conditions, 469 events. 224/469 cut-off events. For 16158/16162 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2189 event pairs, 20 based on Foata normal form. 6/474 useless extension candidates. Maximal degree in co-relation 3018. Up to 258 conditions per place. [2024-06-27 23:50:42,618 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 57 selfloop transitions, 30 changer transitions 0/128 dead transitions. [2024-06-27 23:50:42,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 128 transitions, 1414 flow [2024-06-27 23:50:42,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:50:42,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:50:42,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 89 transitions. [2024-06-27 23:50:42,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.478494623655914 [2024-06-27 23:50:42,620 INFO L175 Difference]: Start difference. First operand has 143 places, 116 transitions, 1178 flow. Second operand 6 states and 89 transitions. [2024-06-27 23:50:42,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 128 transitions, 1414 flow [2024-06-27 23:50:42,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 128 transitions, 1365 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-27 23:50:42,639 INFO L231 Difference]: Finished difference. Result has 139 places, 118 transitions, 1245 flow [2024-06-27 23:50:42,639 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1129, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1245, PETRI_PLACES=139, PETRI_TRANSITIONS=118} [2024-06-27 23:50:42,639 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 109 predicate places. [2024-06-27 23:50:42,639 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 118 transitions, 1245 flow [2024-06-27 23:50:42,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:50:42,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:50:42,640 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:50:42,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 23:50:42,640 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:50:42,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:50:42,640 INFO L85 PathProgramCache]: Analyzing trace with hash 554461660, now seen corresponding path program 2 times [2024-06-27 23:50:42,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:50:42,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681067914] [2024-06-27 23:50:42,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:50:42,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:50:42,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:50:43,445 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 23:50:43,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:50:43,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681067914] [2024-06-27 23:50:43,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681067914] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:50:43,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:50:43,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:50:43,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265367956] [2024-06-27 23:50:43,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:50:43,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:50:43,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:50:43,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:50:43,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:50:43,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:50:43,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 118 transitions, 1245 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:50:43,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:50:43,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:50:43,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:50:43,767 INFO L124 PetriNetUnfolderBase]: 284/543 cut-off events. [2024-06-27 23:50:43,768 INFO L125 PetriNetUnfolderBase]: For 20178/20187 co-relation queries the response was YES. [2024-06-27 23:50:43,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3836 conditions, 543 events. 284/543 cut-off events. For 20178/20187 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2421 event pairs, 50 based on Foata normal form. 4/545 useless extension candidates. Maximal degree in co-relation 3772. Up to 432 conditions per place. [2024-06-27 23:50:43,771 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 103 selfloop transitions, 28 changer transitions 0/138 dead transitions. [2024-06-27 23:50:43,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 138 transitions, 1597 flow [2024-06-27 23:50:43,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:50:43,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:50:43,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-27 23:50:43,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-27 23:50:43,772 INFO L175 Difference]: Start difference. First operand has 139 places, 118 transitions, 1245 flow. Second operand 9 states and 108 transitions. [2024-06-27 23:50:43,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 138 transitions, 1597 flow [2024-06-27 23:50:43,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 138 transitions, 1552 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-27 23:50:43,794 INFO L231 Difference]: Finished difference. Result has 146 places, 120 transitions, 1308 flow [2024-06-27 23:50:43,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1201, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1308, PETRI_PLACES=146, PETRI_TRANSITIONS=120} [2024-06-27 23:50:43,794 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 116 predicate places. [2024-06-27 23:50:43,794 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 120 transitions, 1308 flow [2024-06-27 23:50:43,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:50:43,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:50:43,795 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:50:43,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 23:50:43,795 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:50:43,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:50:43,795 INFO L85 PathProgramCache]: Analyzing trace with hash 700459570, now seen corresponding path program 3 times [2024-06-27 23:50:43,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:50:43,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878538040] [2024-06-27 23:50:43,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:50:43,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:50:43,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:50:44,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:50:44,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:50:44,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878538040] [2024-06-27 23:50:44,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878538040] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:50:44,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:50:44,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:50:44,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881179984] [2024-06-27 23:50:44,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:50:44,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:50:44,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:50:44,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:50:44,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:50:44,838 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:50:44,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 120 transitions, 1308 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:50:44,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:50:44,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:50:44,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:50:45,082 INFO L124 PetriNetUnfolderBase]: 288/553 cut-off events. [2024-06-27 23:50:45,082 INFO L125 PetriNetUnfolderBase]: For 22121/22127 co-relation queries the response was YES. [2024-06-27 23:50:45,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3975 conditions, 553 events. 288/553 cut-off events. For 22121/22127 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2506 event pairs, 53 based on Foata normal form. 8/561 useless extension candidates. Maximal degree in co-relation 3910. Up to 446 conditions per place. [2024-06-27 23:50:45,085 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 99 selfloop transitions, 31 changer transitions 0/137 dead transitions. [2024-06-27 23:50:45,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 137 transitions, 1648 flow [2024-06-27 23:50:45,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:50:45,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:50:45,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-27 23:50:45,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-27 23:50:45,086 INFO L175 Difference]: Start difference. First operand has 146 places, 120 transitions, 1308 flow. Second operand 9 states and 108 transitions. [2024-06-27 23:50:45,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 137 transitions, 1648 flow [2024-06-27 23:50:45,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 137 transitions, 1562 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-27 23:50:45,111 INFO L231 Difference]: Finished difference. Result has 149 places, 121 transitions, 1328 flow [2024-06-27 23:50:45,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1222, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1328, PETRI_PLACES=149, PETRI_TRANSITIONS=121} [2024-06-27 23:50:45,111 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 119 predicate places. [2024-06-27 23:50:45,111 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 121 transitions, 1328 flow [2024-06-27 23:50:45,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:50:45,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:50:45,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:50:45,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 23:50:45,111 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:50:45,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:50:45,112 INFO L85 PathProgramCache]: Analyzing trace with hash 787151380, now seen corresponding path program 4 times [2024-06-27 23:50:45,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:50:45,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907784599] [2024-06-27 23:50:45,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:50:45,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:50:45,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:50:46,176 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 23:50:46,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:50:46,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907784599] [2024-06-27 23:50:46,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907784599] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:50:46,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:50:46,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:50:46,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236838750] [2024-06-27 23:50:46,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:50:46,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:50:46,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:50:46,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:50:46,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:50:46,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:50:46,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 121 transitions, 1328 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:50:46,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:50:46,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:50:46,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:50:46,462 INFO L124 PetriNetUnfolderBase]: 285/553 cut-off events. [2024-06-27 23:50:46,462 INFO L125 PetriNetUnfolderBase]: For 21680/21680 co-relation queries the response was YES. [2024-06-27 23:50:46,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3870 conditions, 553 events. 285/553 cut-off events. For 21680/21680 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2517 event pairs, 49 based on Foata normal form. 2/555 useless extension candidates. Maximal degree in co-relation 3804. Up to 441 conditions per place. [2024-06-27 23:50:46,466 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 99 selfloop transitions, 30 changer transitions 0/136 dead transitions. [2024-06-27 23:50:46,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 136 transitions, 1662 flow [2024-06-27 23:50:46,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:50:46,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:50:46,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 98 transitions. [2024-06-27 23:50:46,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3951612903225806 [2024-06-27 23:50:46,467 INFO L175 Difference]: Start difference. First operand has 149 places, 121 transitions, 1328 flow. Second operand 8 states and 98 transitions. [2024-06-27 23:50:46,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 136 transitions, 1662 flow [2024-06-27 23:50:46,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 136 transitions, 1566 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-27 23:50:46,491 INFO L231 Difference]: Finished difference. Result has 150 places, 122 transitions, 1338 flow [2024-06-27 23:50:46,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1232, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1338, PETRI_PLACES=150, PETRI_TRANSITIONS=122} [2024-06-27 23:50:46,491 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 120 predicate places. [2024-06-27 23:50:46,491 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 122 transitions, 1338 flow [2024-06-27 23:50:46,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:50:46,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:50:46,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:50:46,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 23:50:46,492 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:50:46,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:50:46,492 INFO L85 PathProgramCache]: Analyzing trace with hash 787310720, now seen corresponding path program 1 times [2024-06-27 23:50:46,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:50:46,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975989693] [2024-06-27 23:50:46,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:50:46,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:50:46,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:50:47,277 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 23:50:47,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:50:47,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975989693] [2024-06-27 23:50:47,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975989693] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:50:47,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:50:47,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:50:47,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848314343] [2024-06-27 23:50:47,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:50:47,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:50:47,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:50:47,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:50:47,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:50:47,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:50:47,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 122 transitions, 1338 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 23:50:47,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:50:47,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:50:47,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:50:47,536 INFO L124 PetriNetUnfolderBase]: 359/649 cut-off events. [2024-06-27 23:50:47,536 INFO L125 PetriNetUnfolderBase]: For 22749/22749 co-relation queries the response was YES. [2024-06-27 23:50:47,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4337 conditions, 649 events. 359/649 cut-off events. For 22749/22749 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2842 event pairs, 77 based on Foata normal form. 1/650 useless extension candidates. Maximal degree in co-relation 4270. Up to 580 conditions per place. [2024-06-27 23:50:47,540 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 106 selfloop transitions, 32 changer transitions 0/140 dead transitions. [2024-06-27 23:50:47,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 140 transitions, 1698 flow [2024-06-27 23:50:47,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:50:47,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:50:47,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-27 23:50:47,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35125448028673834 [2024-06-27 23:50:47,546 INFO L175 Difference]: Start difference. First operand has 150 places, 122 transitions, 1338 flow. Second operand 9 states and 98 transitions. [2024-06-27 23:50:47,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 140 transitions, 1698 flow [2024-06-27 23:50:47,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 140 transitions, 1605 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-27 23:50:47,576 INFO L231 Difference]: Finished difference. Result has 155 places, 126 transitions, 1371 flow [2024-06-27 23:50:47,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1245, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1371, PETRI_PLACES=155, PETRI_TRANSITIONS=126} [2024-06-27 23:50:47,577 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 125 predicate places. [2024-06-27 23:50:47,577 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 126 transitions, 1371 flow [2024-06-27 23:50:47,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 23:50:47,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:50:47,577 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:50:47,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 23:50:47,577 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:50:47,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:50:47,578 INFO L85 PathProgramCache]: Analyzing trace with hash -103263656, now seen corresponding path program 5 times [2024-06-27 23:50:47,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:50:47,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427259474] [2024-06-27 23:50:47,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:50:47,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:50:47,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:50:48,427 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 23:50:48,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:50:48,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427259474] [2024-06-27 23:50:48,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427259474] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:50:48,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:50:48,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:50:48,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428148078] [2024-06-27 23:50:48,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:50:48,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:50:48,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:50:48,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:50:48,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:50:48,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:50:48,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 126 transitions, 1371 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:50:48,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:50:48,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:50:48,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:50:48,755 INFO L124 PetriNetUnfolderBase]: 306/593 cut-off events. [2024-06-27 23:50:48,756 INFO L125 PetriNetUnfolderBase]: For 25297/25309 co-relation queries the response was YES. [2024-06-27 23:50:48,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4268 conditions, 593 events. 306/593 cut-off events. For 25297/25309 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2773 event pairs, 43 based on Foata normal form. 6/599 useless extension candidates. Maximal degree in co-relation 4199. Up to 474 conditions per place. [2024-06-27 23:50:48,760 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 111 selfloop transitions, 24 changer transitions 0/143 dead transitions. [2024-06-27 23:50:48,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 143 transitions, 1730 flow [2024-06-27 23:50:48,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:50:48,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:50:48,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 100 transitions. [2024-06-27 23:50:48,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-27 23:50:48,762 INFO L175 Difference]: Start difference. First operand has 155 places, 126 transitions, 1371 flow. Second operand 8 states and 100 transitions. [2024-06-27 23:50:48,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 143 transitions, 1730 flow [2024-06-27 23:50:48,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 143 transitions, 1643 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-27 23:50:48,792 INFO L231 Difference]: Finished difference. Result has 158 places, 128 transitions, 1391 flow [2024-06-27 23:50:48,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1284, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1391, PETRI_PLACES=158, PETRI_TRANSITIONS=128} [2024-06-27 23:50:48,793 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 128 predicate places. [2024-06-27 23:50:48,793 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 128 transitions, 1391 flow [2024-06-27 23:50:48,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:50:48,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:50:48,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:50:48,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 23:50:48,794 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:50:48,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:50:48,794 INFO L85 PathProgramCache]: Analyzing trace with hash 617737820, now seen corresponding path program 6 times [2024-06-27 23:50:48,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:50:48,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641213591] [2024-06-27 23:50:48,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:50:48,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:50:48,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:50:49,734 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 23:50:49,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:50:49,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641213591] [2024-06-27 23:50:49,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641213591] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:50:49,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:50:49,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:50:49,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977544651] [2024-06-27 23:50:49,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:50:49,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:50:49,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:50:49,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:50:49,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:50:49,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:50:49,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 128 transitions, 1391 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:50:49,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:50:49,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:50:49,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:50:50,092 INFO L124 PetriNetUnfolderBase]: 313/608 cut-off events. [2024-06-27 23:50:50,092 INFO L125 PetriNetUnfolderBase]: For 27741/27753 co-relation queries the response was YES. [2024-06-27 23:50:50,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4402 conditions, 608 events. 313/608 cut-off events. For 27741/27753 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2866 event pairs, 45 based on Foata normal form. 14/622 useless extension candidates. Maximal degree in co-relation 4331. Up to 495 conditions per place. [2024-06-27 23:50:50,096 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 106 selfloop transitions, 28 changer transitions 0/142 dead transitions. [2024-06-27 23:50:50,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 142 transitions, 1737 flow [2024-06-27 23:50:50,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:50:50,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:50:50,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-27 23:50:50,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37992831541218636 [2024-06-27 23:50:50,097 INFO L175 Difference]: Start difference. First operand has 158 places, 128 transitions, 1391 flow. Second operand 9 states and 106 transitions. [2024-06-27 23:50:50,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 142 transitions, 1737 flow [2024-06-27 23:50:50,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 142 transitions, 1651 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-27 23:50:50,128 INFO L231 Difference]: Finished difference. Result has 162 places, 129 transitions, 1411 flow [2024-06-27 23:50:50,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1305, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1411, PETRI_PLACES=162, PETRI_TRANSITIONS=129} [2024-06-27 23:50:50,129 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 132 predicate places. [2024-06-27 23:50:50,129 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 129 transitions, 1411 flow [2024-06-27 23:50:50,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:50:50,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:50:50,129 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:50:50,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 23:50:50,129 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:50:50,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:50:50,130 INFO L85 PathProgramCache]: Analyzing trace with hash 620534330, now seen corresponding path program 7 times [2024-06-27 23:50:50,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:50:50,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860822819] [2024-06-27 23:50:50,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:50:50,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:50:50,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:50:51,256 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 23:50:51,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:50:51,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860822819] [2024-06-27 23:50:51,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860822819] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:50:51,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:50:51,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:50:51,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095296667] [2024-06-27 23:50:51,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:50:51,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:50:51,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:50:51,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:50:51,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:50:51,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:50:51,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 129 transitions, 1411 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:50:51,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:50:51,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:50:51,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:50:51,582 INFO L124 PetriNetUnfolderBase]: 317/616 cut-off events. [2024-06-27 23:50:51,582 INFO L125 PetriNetUnfolderBase]: For 29272/29284 co-relation queries the response was YES. [2024-06-27 23:50:51,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4481 conditions, 616 events. 317/616 cut-off events. For 29272/29284 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2925 event pairs, 47 based on Foata normal form. 6/622 useless extension candidates. Maximal degree in co-relation 4408. Up to 503 conditions per place. [2024-06-27 23:50:51,586 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 108 selfloop transitions, 27 changer transitions 0/143 dead transitions. [2024-06-27 23:50:51,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 143 transitions, 1761 flow [2024-06-27 23:50:51,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:50:51,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:50:51,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 99 transitions. [2024-06-27 23:50:51,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39919354838709675 [2024-06-27 23:50:51,588 INFO L175 Difference]: Start difference. First operand has 162 places, 129 transitions, 1411 flow. Second operand 8 states and 99 transitions. [2024-06-27 23:50:51,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 143 transitions, 1761 flow [2024-06-27 23:50:51,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 143 transitions, 1671 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-27 23:50:51,622 INFO L231 Difference]: Finished difference. Result has 164 places, 130 transitions, 1427 flow [2024-06-27 23:50:51,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1321, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1427, PETRI_PLACES=164, PETRI_TRANSITIONS=130} [2024-06-27 23:50:51,622 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 134 predicate places. [2024-06-27 23:50:51,622 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 130 transitions, 1427 flow [2024-06-27 23:50:51,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:50:51,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:50:51,623 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:50:51,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 23:50:51,623 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:50:51,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:50:51,623 INFO L85 PathProgramCache]: Analyzing trace with hash 620539290, now seen corresponding path program 2 times [2024-06-27 23:50:51,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:50:51,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190740009] [2024-06-27 23:50:51,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:50:51,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:50:51,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:50:52,440 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 23:50:52,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:50:52,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190740009] [2024-06-27 23:50:52,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190740009] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:50:52,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:50:52,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:50:52,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128071184] [2024-06-27 23:50:52,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:50:52,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:50:52,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:50:52,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:50:52,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:50:52,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:50:52,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 130 transitions, 1427 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 23:50:52,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:50:52,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:50:52,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:50:52,774 INFO L124 PetriNetUnfolderBase]: 391/712 cut-off events. [2024-06-27 23:50:52,774 INFO L125 PetriNetUnfolderBase]: For 28349/28349 co-relation queries the response was YES. [2024-06-27 23:50:52,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4804 conditions, 712 events. 391/712 cut-off events. For 28349/28349 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3267 event pairs, 77 based on Foata normal form. 1/713 useless extension candidates. Maximal degree in co-relation 4731. Up to 644 conditions per place. [2024-06-27 23:50:52,779 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 115 selfloop transitions, 30 changer transitions 0/147 dead transitions. [2024-06-27 23:50:52,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 147 transitions, 1803 flow [2024-06-27 23:50:52,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:50:52,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:50:52,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-27 23:50:52,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33548387096774196 [2024-06-27 23:50:52,791 INFO L175 Difference]: Start difference. First operand has 164 places, 130 transitions, 1427 flow. Second operand 10 states and 104 transitions. [2024-06-27 23:50:52,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 147 transitions, 1803 flow [2024-06-27 23:50:52,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 147 transitions, 1704 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-27 23:50:52,831 INFO L231 Difference]: Finished difference. Result has 169 places, 134 transitions, 1454 flow [2024-06-27 23:50:52,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1328, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1454, PETRI_PLACES=169, PETRI_TRANSITIONS=134} [2024-06-27 23:50:52,831 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 139 predicate places. [2024-06-27 23:50:52,831 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 134 transitions, 1454 flow [2024-06-27 23:50:52,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 23:50:52,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:50:52,832 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:50:52,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 23:50:52,832 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:50:52,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:50:52,832 INFO L85 PathProgramCache]: Analyzing trace with hash -983112852, now seen corresponding path program 8 times [2024-06-27 23:50:52,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:50:52,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791204795] [2024-06-27 23:50:52,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:50:52,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:50:52,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:50:53,941 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 23:50:53,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:50:53,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791204795] [2024-06-27 23:50:53,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791204795] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:50:53,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:50:53,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:50:53,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637961638] [2024-06-27 23:50:53,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:50:53,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:50:53,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:50:53,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:50:53,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:50:54,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:50:54,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 134 transitions, 1454 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:50:54,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:50:54,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:50:54,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:50:54,245 INFO L124 PetriNetUnfolderBase]: 322/631 cut-off events. [2024-06-27 23:50:54,245 INFO L125 PetriNetUnfolderBase]: For 28793/28797 co-relation queries the response was YES. [2024-06-27 23:50:54,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4436 conditions, 631 events. 322/631 cut-off events. For 28793/28797 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3056 event pairs, 50 based on Foata normal form. 2/633 useless extension candidates. Maximal degree in co-relation 4360. Up to 480 conditions per place. [2024-06-27 23:50:54,249 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 98 selfloop transitions, 40 changer transitions 0/147 dead transitions. [2024-06-27 23:50:54,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 147 transitions, 1808 flow [2024-06-27 23:50:54,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:50:54,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:50:54,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 100 transitions. [2024-06-27 23:50:54,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-27 23:50:54,250 INFO L175 Difference]: Start difference. First operand has 169 places, 134 transitions, 1454 flow. Second operand 8 states and 100 transitions. [2024-06-27 23:50:54,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 147 transitions, 1808 flow [2024-06-27 23:50:54,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 147 transitions, 1719 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-27 23:50:54,287 INFO L231 Difference]: Finished difference. Result has 170 places, 135 transitions, 1499 flow [2024-06-27 23:50:54,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1365, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1499, PETRI_PLACES=170, PETRI_TRANSITIONS=135} [2024-06-27 23:50:54,288 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 140 predicate places. [2024-06-27 23:50:54,288 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 135 transitions, 1499 flow [2024-06-27 23:50:54,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:50:54,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:50:54,288 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:50:54,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 23:50:54,288 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:50:54,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:50:54,289 INFO L85 PathProgramCache]: Analyzing trace with hash 735830460, now seen corresponding path program 3 times [2024-06-27 23:50:54,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:50:54,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142830350] [2024-06-27 23:50:54,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:50:54,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:50:54,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:50:55,116 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 23:50:55,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:50:55,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142830350] [2024-06-27 23:50:55,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142830350] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:50:55,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:50:55,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:50:55,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678529193] [2024-06-27 23:50:55,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:50:55,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:50:55,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:50:55,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:50:55,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:50:55,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:50:55,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 135 transitions, 1499 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 23:50:55,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:50:55,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:50:55,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:50:55,402 INFO L124 PetriNetUnfolderBase]: 415/754 cut-off events. [2024-06-27 23:50:55,402 INFO L125 PetriNetUnfolderBase]: For 33134/33134 co-relation queries the response was YES. [2024-06-27 23:50:55,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5309 conditions, 754 events. 415/754 cut-off events. For 33134/33134 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3506 event pairs, 68 based on Foata normal form. 1/755 useless extension candidates. Maximal degree in co-relation 5233. Up to 624 conditions per place. [2024-06-27 23:50:55,407 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 111 selfloop transitions, 46 changer transitions 0/159 dead transitions. [2024-06-27 23:50:55,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 159 transitions, 2159 flow [2024-06-27 23:50:55,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:50:55,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:50:55,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-27 23:50:55,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37992831541218636 [2024-06-27 23:50:55,408 INFO L175 Difference]: Start difference. First operand has 170 places, 135 transitions, 1499 flow. Second operand 9 states and 106 transitions. [2024-06-27 23:50:55,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 159 transitions, 2159 flow [2024-06-27 23:50:55,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 159 transitions, 2033 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-27 23:50:55,450 INFO L231 Difference]: Finished difference. Result has 176 places, 144 transitions, 1647 flow [2024-06-27 23:50:55,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1375, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1647, PETRI_PLACES=176, PETRI_TRANSITIONS=144} [2024-06-27 23:50:55,452 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 146 predicate places. [2024-06-27 23:50:55,452 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 144 transitions, 1647 flow [2024-06-27 23:50:55,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 23:50:55,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:50:55,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:50:55,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 23:50:55,454 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:50:55,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:50:55,454 INFO L85 PathProgramCache]: Analyzing trace with hash 736003440, now seen corresponding path program 4 times [2024-06-27 23:50:55,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:50:55,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251097389] [2024-06-27 23:50:55,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:50:55,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:50:55,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:50:56,294 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 23:50:56,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:50:56,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251097389] [2024-06-27 23:50:56,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251097389] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:50:56,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:50:56,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:50:56,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11632489] [2024-06-27 23:50:56,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:50:56,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:50:56,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:50:56,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:50:56,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:50:56,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:50:56,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 144 transitions, 1647 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 23:50:56,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:50:56,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:50:56,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:50:56,593 INFO L124 PetriNetUnfolderBase]: 418/759 cut-off events. [2024-06-27 23:50:56,593 INFO L125 PetriNetUnfolderBase]: For 34379/34379 co-relation queries the response was YES. [2024-06-27 23:50:56,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5481 conditions, 759 events. 418/759 cut-off events. For 34379/34379 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3530 event pairs, 72 based on Foata normal form. 1/760 useless extension candidates. Maximal degree in co-relation 5401. Up to 628 conditions per place. [2024-06-27 23:50:56,598 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 108 selfloop transitions, 55 changer transitions 0/165 dead transitions. [2024-06-27 23:50:56,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 165 transitions, 2279 flow [2024-06-27 23:50:56,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:50:56,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:50:56,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-27 23:50:56,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37992831541218636 [2024-06-27 23:50:56,600 INFO L175 Difference]: Start difference. First operand has 176 places, 144 transitions, 1647 flow. Second operand 9 states and 106 transitions. [2024-06-27 23:50:56,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 165 transitions, 2279 flow [2024-06-27 23:50:56,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 165 transitions, 2183 flow, removed 26 selfloop flow, removed 4 redundant places. [2024-06-27 23:50:56,654 INFO L231 Difference]: Finished difference. Result has 182 places, 151 transitions, 1789 flow [2024-06-27 23:50:56,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1555, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1789, PETRI_PLACES=182, PETRI_TRANSITIONS=151} [2024-06-27 23:50:56,655 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 152 predicate places. [2024-06-27 23:50:56,655 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 151 transitions, 1789 flow [2024-06-27 23:50:56,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 23:50:56,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:50:56,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:50:56,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 23:50:56,656 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:50:56,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:50:56,656 INFO L85 PathProgramCache]: Analyzing trace with hash 736010198, now seen corresponding path program 1 times [2024-06-27 23:50:56,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:50:56,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834824776] [2024-06-27 23:50:56,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:50:56,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:50:56,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:50:57,507 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 23:50:57,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:50:57,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834824776] [2024-06-27 23:50:57,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834824776] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:50:57,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:50:57,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:50:57,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586952082] [2024-06-27 23:50:57,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:50:57,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:50:57,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:50:57,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:50:57,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:50:57,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:50:57,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 151 transitions, 1789 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:50:57,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:50:57,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:50:57,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:50:57,723 INFO L124 PetriNetUnfolderBase]: 421/766 cut-off events. [2024-06-27 23:50:57,723 INFO L125 PetriNetUnfolderBase]: For 36213/36213 co-relation queries the response was YES. [2024-06-27 23:50:57,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5635 conditions, 766 events. 421/766 cut-off events. For 36213/36213 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3602 event pairs, 119 based on Foata normal form. 1/767 useless extension candidates. Maximal degree in co-relation 5553. Up to 719 conditions per place. [2024-06-27 23:50:57,728 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 138 selfloop transitions, 23 changer transitions 0/163 dead transitions. [2024-06-27 23:50:57,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 163 transitions, 2155 flow [2024-06-27 23:50:57,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:50:57,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:50:57,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2024-06-27 23:50:57,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-27 23:50:57,728 INFO L175 Difference]: Start difference. First operand has 182 places, 151 transitions, 1789 flow. Second operand 8 states and 93 transitions. [2024-06-27 23:50:57,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 163 transitions, 2155 flow [2024-06-27 23:50:57,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 163 transitions, 2052 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-27 23:50:57,781 INFO L231 Difference]: Finished difference. Result has 185 places, 153 transitions, 1762 flow [2024-06-27 23:50:57,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1686, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1762, PETRI_PLACES=185, PETRI_TRANSITIONS=153} [2024-06-27 23:50:57,782 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 155 predicate places. [2024-06-27 23:50:57,782 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 153 transitions, 1762 flow [2024-06-27 23:50:57,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:50:57,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:50:57,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:50:57,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 23:50:57,783 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:50:57,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:50:57,783 INFO L85 PathProgramCache]: Analyzing trace with hash -982928402, now seen corresponding path program 5 times [2024-06-27 23:50:57,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:50:57,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211932024] [2024-06-27 23:50:57,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:50:57,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:50:57,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:50:58,613 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 23:50:58,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:50:58,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211932024] [2024-06-27 23:50:58,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211932024] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:50:58,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:50:58,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:50:58,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081461501] [2024-06-27 23:50:58,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:50:58,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:50:58,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:50:58,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:50:58,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:50:58,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:50:58,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 153 transitions, 1762 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 23:50:58,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:50:58,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:50:58,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:50:58,902 INFO L124 PetriNetUnfolderBase]: 419/761 cut-off events. [2024-06-27 23:50:58,902 INFO L125 PetriNetUnfolderBase]: For 34793/34793 co-relation queries the response was YES. [2024-06-27 23:50:58,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5369 conditions, 761 events. 419/761 cut-off events. For 34793/34793 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3548 event pairs, 73 based on Foata normal form. 1/762 useless extension candidates. Maximal degree in co-relation 5287. Up to 631 conditions per place. [2024-06-27 23:50:58,907 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 103 selfloop transitions, 61 changer transitions 0/166 dead transitions. [2024-06-27 23:50:58,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 166 transitions, 2210 flow [2024-06-27 23:50:58,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:50:58,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:50:58,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-27 23:50:58,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2024-06-27 23:50:58,908 INFO L175 Difference]: Start difference. First operand has 185 places, 153 transitions, 1762 flow. Second operand 9 states and 105 transitions. [2024-06-27 23:50:58,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 166 transitions, 2210 flow [2024-06-27 23:50:58,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 166 transitions, 2130 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-27 23:50:58,968 INFO L231 Difference]: Finished difference. Result has 188 places, 153 transitions, 1809 flow [2024-06-27 23:50:58,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1682, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1809, PETRI_PLACES=188, PETRI_TRANSITIONS=153} [2024-06-27 23:50:58,969 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 158 predicate places. [2024-06-27 23:50:58,969 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 153 transitions, 1809 flow [2024-06-27 23:50:58,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 23:50:58,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:50:58,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:50:58,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 23:50:58,970 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:50:58,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:50:58,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1493347194, now seen corresponding path program 9 times [2024-06-27 23:50:58,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:50:58,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376543261] [2024-06-27 23:50:58,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:50:58,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:50:58,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:50:59,898 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 23:50:59,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:50:59,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376543261] [2024-06-27 23:50:59,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376543261] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:50:59,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:50:59,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:50:59,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000137893] [2024-06-27 23:50:59,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:50:59,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:50:59,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:50:59,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:50:59,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:50:59,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:50:59,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 153 transitions, 1809 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:50:59,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:50:59,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:50:59,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:51:00,285 INFO L124 PetriNetUnfolderBase]: 361/699 cut-off events. [2024-06-27 23:51:00,285 INFO L125 PetriNetUnfolderBase]: For 39535/39543 co-relation queries the response was YES. [2024-06-27 23:51:00,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5368 conditions, 699 events. 361/699 cut-off events. For 39535/39543 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3458 event pairs, 51 based on Foata normal form. 4/699 useless extension candidates. Maximal degree in co-relation 5285. Up to 568 conditions per place. [2024-06-27 23:51:00,289 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 130 selfloop transitions, 25 changer transitions 0/166 dead transitions. [2024-06-27 23:51:00,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 166 transitions, 2201 flow [2024-06-27 23:51:00,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:51:00,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:51:00,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-27 23:51:00,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36917562724014336 [2024-06-27 23:51:00,290 INFO L175 Difference]: Start difference. First operand has 188 places, 153 transitions, 1809 flow. Second operand 9 states and 103 transitions. [2024-06-27 23:51:00,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 166 transitions, 2201 flow [2024-06-27 23:51:00,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 166 transitions, 2118 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-27 23:51:00,356 INFO L231 Difference]: Finished difference. Result has 192 places, 154 transitions, 1832 flow [2024-06-27 23:51:00,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1726, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1832, PETRI_PLACES=192, PETRI_TRANSITIONS=154} [2024-06-27 23:51:00,356 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 162 predicate places. [2024-06-27 23:51:00,356 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 154 transitions, 1832 flow [2024-06-27 23:51:00,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:51:00,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:51:00,356 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:51:00,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 23:51:00,357 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:51:00,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:51:00,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1493407644, now seen corresponding path program 10 times [2024-06-27 23:51:00,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:51:00,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695579048] [2024-06-27 23:51:00,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:51:00,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:51:00,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:51:01,369 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 23:51:01,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:51:01,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695579048] [2024-06-27 23:51:01,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695579048] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:51:01,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:51:01,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:51:01,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945731272] [2024-06-27 23:51:01,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:51:01,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:51:01,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:51:01,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:51:01,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:51:01,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:51:01,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 154 transitions, 1832 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:51:01,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:51:01,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:51:01,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:51:01,743 INFO L124 PetriNetUnfolderBase]: 365/707 cut-off events. [2024-06-27 23:51:01,744 INFO L125 PetriNetUnfolderBase]: For 42580/42588 co-relation queries the response was YES. [2024-06-27 23:51:01,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5482 conditions, 707 events. 365/707 cut-off events. For 42580/42588 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3494 event pairs, 53 based on Foata normal form. 10/713 useless extension candidates. Maximal degree in co-relation 5397. Up to 582 conditions per place. [2024-06-27 23:51:01,748 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 126 selfloop transitions, 28 changer transitions 0/165 dead transitions. [2024-06-27 23:51:01,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 165 transitions, 2218 flow [2024-06-27 23:51:01,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:51:01,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:51:01,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-27 23:51:01,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3911290322580645 [2024-06-27 23:51:01,749 INFO L175 Difference]: Start difference. First operand has 192 places, 154 transitions, 1832 flow. Second operand 8 states and 97 transitions. [2024-06-27 23:51:01,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 165 transitions, 2218 flow [2024-06-27 23:51:01,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 165 transitions, 2114 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-27 23:51:01,819 INFO L231 Difference]: Finished difference. Result has 192 places, 155 transitions, 1842 flow [2024-06-27 23:51:01,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1728, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1842, PETRI_PLACES=192, PETRI_TRANSITIONS=155} [2024-06-27 23:51:01,820 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 162 predicate places. [2024-06-27 23:51:01,820 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 155 transitions, 1842 flow [2024-06-27 23:51:01,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:51:01,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:51:01,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:51:01,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 23:51:01,820 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:51:01,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:51:01,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1579008044, now seen corresponding path program 11 times [2024-06-27 23:51:01,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:51:01,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031446189] [2024-06-27 23:51:01,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:51:01,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:51:01,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:51:02,977 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 23:51:02,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:51:02,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031446189] [2024-06-27 23:51:02,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031446189] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:51:02,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:51:02,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:51:02,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207242457] [2024-06-27 23:51:02,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:51:02,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:51:02,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:51:02,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:51:02,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:51:03,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:51:03,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 155 transitions, 1842 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:51:03,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:51:03,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:51:03,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:51:03,367 INFO L124 PetriNetUnfolderBase]: 363/709 cut-off events. [2024-06-27 23:51:03,367 INFO L125 PetriNetUnfolderBase]: For 42983/42991 co-relation queries the response was YES. [2024-06-27 23:51:03,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5378 conditions, 709 events. 363/709 cut-off events. For 42983/42991 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3541 event pairs, 53 based on Foata normal form. 4/709 useless extension candidates. Maximal degree in co-relation 5295. Up to 584 conditions per place. [2024-06-27 23:51:03,372 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 127 selfloop transitions, 28 changer transitions 0/166 dead transitions. [2024-06-27 23:51:03,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 166 transitions, 2232 flow [2024-06-27 23:51:03,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:51:03,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:51:03,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-27 23:51:03,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36917562724014336 [2024-06-27 23:51:03,373 INFO L175 Difference]: Start difference. First operand has 192 places, 155 transitions, 1842 flow. Second operand 9 states and 103 transitions. [2024-06-27 23:51:03,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 166 transitions, 2232 flow [2024-06-27 23:51:03,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 166 transitions, 2128 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-27 23:51:03,444 INFO L231 Difference]: Finished difference. Result has 195 places, 156 transitions, 1854 flow [2024-06-27 23:51:03,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1738, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1854, PETRI_PLACES=195, PETRI_TRANSITIONS=156} [2024-06-27 23:51:03,444 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 165 predicate places. [2024-06-27 23:51:03,444 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 156 transitions, 1854 flow [2024-06-27 23:51:03,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:51:03,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:51:03,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:51:03,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 23:51:03,445 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:51:03,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:51:03,445 INFO L85 PathProgramCache]: Analyzing trace with hash -379130190, now seen corresponding path program 6 times [2024-06-27 23:51:03,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:51:03,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427823692] [2024-06-27 23:51:03,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:51:03,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:51:03,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:51:04,243 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 23:51:04,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:51:04,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427823692] [2024-06-27 23:51:04,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427823692] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:51:04,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:51:04,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:51:04,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931003796] [2024-06-27 23:51:04,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:51:04,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:51:04,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:51:04,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:51:04,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:51:04,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:51:04,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 156 transitions, 1854 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 23:51:04,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:51:04,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:51:04,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:51:04,530 INFO L124 PetriNetUnfolderBase]: 446/814 cut-off events. [2024-06-27 23:51:04,530 INFO L125 PetriNetUnfolderBase]: For 42544/42544 co-relation queries the response was YES. [2024-06-27 23:51:04,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5829 conditions, 814 events. 446/814 cut-off events. For 42544/42544 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3904 event pairs, 79 based on Foata normal form. 1/815 useless extension candidates. Maximal degree in co-relation 5745. Up to 746 conditions per place. [2024-06-27 23:51:04,535 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 138 selfloop transitions, 30 changer transitions 0/170 dead transitions. [2024-06-27 23:51:04,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 170 transitions, 2270 flow [2024-06-27 23:51:04,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:51:04,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:51:04,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-27 23:51:04,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34767025089605735 [2024-06-27 23:51:04,536 INFO L175 Difference]: Start difference. First operand has 195 places, 156 transitions, 1854 flow. Second operand 9 states and 97 transitions. [2024-06-27 23:51:04,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 170 transitions, 2270 flow [2024-06-27 23:51:04,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 170 transitions, 2167 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-27 23:51:04,611 INFO L231 Difference]: Finished difference. Result has 199 places, 160 transitions, 1879 flow [2024-06-27 23:51:04,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1751, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1879, PETRI_PLACES=199, PETRI_TRANSITIONS=160} [2024-06-27 23:51:04,611 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 169 predicate places. [2024-06-27 23:51:04,611 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 160 transitions, 1879 flow [2024-06-27 23:51:04,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 23:51:04,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:51:04,612 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:51:04,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 23:51:04,612 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:51:04,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:51:04,612 INFO L85 PathProgramCache]: Analyzing trace with hash -263666040, now seen corresponding path program 7 times [2024-06-27 23:51:04,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:51:04,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335590238] [2024-06-27 23:51:04,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:51:04,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:51:04,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:51:05,487 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 23:51:05,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:51:05,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335590238] [2024-06-27 23:51:05,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335590238] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:51:05,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:51:05,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:51:05,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527123145] [2024-06-27 23:51:05,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:51:05,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:51:05,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:51:05,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:51:05,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:51:05,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:51:05,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 160 transitions, 1879 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 23:51:05,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:51:05,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:51:05,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:51:05,791 INFO L124 PetriNetUnfolderBase]: 467/848 cut-off events. [2024-06-27 23:51:05,791 INFO L125 PetriNetUnfolderBase]: For 47064/47064 co-relation queries the response was YES. [2024-06-27 23:51:05,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6283 conditions, 848 events. 467/848 cut-off events. For 47064/47064 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 4105 event pairs, 71 based on Foata normal form. 1/849 useless extension candidates. Maximal degree in co-relation 6197. Up to 741 conditions per place. [2024-06-27 23:51:05,796 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 136 selfloop transitions, 45 changer transitions 0/183 dead transitions. [2024-06-27 23:51:05,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 183 transitions, 2638 flow [2024-06-27 23:51:05,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:51:05,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:51:05,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-27 23:51:05,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2024-06-27 23:51:05,798 INFO L175 Difference]: Start difference. First operand has 199 places, 160 transitions, 1879 flow. Second operand 9 states and 105 transitions. [2024-06-27 23:51:05,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 183 transitions, 2638 flow [2024-06-27 23:51:05,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 183 transitions, 2543 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-27 23:51:05,883 INFO L231 Difference]: Finished difference. Result has 205 places, 172 transitions, 2093 flow [2024-06-27 23:51:05,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1784, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2093, PETRI_PLACES=205, PETRI_TRANSITIONS=172} [2024-06-27 23:51:05,884 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 175 predicate places. [2024-06-27 23:51:05,884 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 172 transitions, 2093 flow [2024-06-27 23:51:05,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 23:51:05,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:51:05,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:51:05,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 23:51:05,885 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:51:05,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:51:05,885 INFO L85 PathProgramCache]: Analyzing trace with hash 572618452, now seen corresponding path program 8 times [2024-06-27 23:51:05,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:51:05,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758105763] [2024-06-27 23:51:05,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:51:05,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:51:05,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:51:06,758 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 23:51:06,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:51:06,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758105763] [2024-06-27 23:51:06,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758105763] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:51:06,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:51:06,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:51:06,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320468318] [2024-06-27 23:51:06,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:51:06,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:51:06,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:51:06,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:51:06,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:51:06,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:51:06,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 172 transitions, 2093 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 23:51:06,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:51:06,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:51:06,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:51:07,090 INFO L124 PetriNetUnfolderBase]: 465/845 cut-off events. [2024-06-27 23:51:07,090 INFO L125 PetriNetUnfolderBase]: For 48371/48371 co-relation queries the response was YES. [2024-06-27 23:51:07,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6410 conditions, 845 events. 465/845 cut-off events. For 48371/48371 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 4083 event pairs, 75 based on Foata normal form. 1/846 useless extension candidates. Maximal degree in co-relation 6320. Up to 739 conditions per place. [2024-06-27 23:51:07,096 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 132 selfloop transitions, 48 changer transitions 0/182 dead transitions. [2024-06-27 23:51:07,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 182 transitions, 2577 flow [2024-06-27 23:51:07,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:51:07,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:51:07,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-27 23:51:07,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3727598566308244 [2024-06-27 23:51:07,097 INFO L175 Difference]: Start difference. First operand has 205 places, 172 transitions, 2093 flow. Second operand 9 states and 104 transitions. [2024-06-27 23:51:07,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 182 transitions, 2577 flow [2024-06-27 23:51:07,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 182 transitions, 2463 flow, removed 43 selfloop flow, removed 3 redundant places. [2024-06-27 23:51:07,192 INFO L231 Difference]: Finished difference. Result has 211 places, 172 transitions, 2080 flow [2024-06-27 23:51:07,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1979, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2080, PETRI_PLACES=211, PETRI_TRANSITIONS=172} [2024-06-27 23:51:07,192 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 181 predicate places. [2024-06-27 23:51:07,192 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 172 transitions, 2080 flow [2024-06-27 23:51:07,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 23:51:07,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:51:07,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:51:07,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 23:51:07,193 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:51:07,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:51:07,193 INFO L85 PathProgramCache]: Analyzing trace with hash 572434002, now seen corresponding path program 12 times [2024-06-27 23:51:07,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:51:07,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914014003] [2024-06-27 23:51:07,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:51:07,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:51:07,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:51:08,366 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 23:51:08,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:51:08,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914014003] [2024-06-27 23:51:08,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914014003] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:51:08,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:51:08,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:51:08,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871995964] [2024-06-27 23:51:08,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:51:08,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:51:08,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:51:08,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:51:08,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:51:08,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:51:08,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 172 transitions, 2080 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:51:08,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:51:08,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:51:08,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:51:08,733 INFO L124 PetriNetUnfolderBase]: 398/770 cut-off events. [2024-06-27 23:51:08,734 INFO L125 PetriNetUnfolderBase]: For 51473/51473 co-relation queries the response was YES. [2024-06-27 23:51:08,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5954 conditions, 770 events. 398/770 cut-off events. For 51473/51473 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3941 event pairs, 52 based on Foata normal form. 4/770 useless extension candidates. Maximal degree in co-relation 5862. Up to 610 conditions per place. [2024-06-27 23:51:08,739 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 133 selfloop transitions, 36 changer transitions 0/182 dead transitions. [2024-06-27 23:51:08,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 182 transitions, 2496 flow [2024-06-27 23:51:08,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:51:08,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:51:08,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 99 transitions. [2024-06-27 23:51:08,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39919354838709675 [2024-06-27 23:51:08,741 INFO L175 Difference]: Start difference. First operand has 211 places, 172 transitions, 2080 flow. Second operand 8 states and 99 transitions. [2024-06-27 23:51:08,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 182 transitions, 2496 flow [2024-06-27 23:51:08,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 182 transitions, 2425 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-27 23:51:08,831 INFO L231 Difference]: Finished difference. Result has 214 places, 173 transitions, 2143 flow [2024-06-27 23:51:08,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2009, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2143, PETRI_PLACES=214, PETRI_TRANSITIONS=173} [2024-06-27 23:51:08,832 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 184 predicate places. [2024-06-27 23:51:08,832 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 173 transitions, 2143 flow [2024-06-27 23:51:08,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:51:08,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:51:08,832 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:51:08,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 23:51:08,832 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:51:08,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:51:08,833 INFO L85 PathProgramCache]: Analyzing trace with hash -263839020, now seen corresponding path program 9 times [2024-06-27 23:51:08,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:51:08,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526961135] [2024-06-27 23:51:08,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:51:08,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:51:08,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:51:09,692 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 23:51:09,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:51:09,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526961135] [2024-06-27 23:51:09,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526961135] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:51:09,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:51:09,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:51:09,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147790038] [2024-06-27 23:51:09,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:51:09,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:51:09,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:51:09,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:51:09,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:51:09,780 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:51:09,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 173 transitions, 2143 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 23:51:09,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:51:09,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:51:09,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:51:10,064 INFO L124 PetriNetUnfolderBase]: 471/858 cut-off events. [2024-06-27 23:51:10,065 INFO L125 PetriNetUnfolderBase]: For 51009/51009 co-relation queries the response was YES. [2024-06-27 23:51:10,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6434 conditions, 858 events. 471/858 cut-off events. For 51009/51009 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 4192 event pairs, 87 based on Foata normal form. 1/859 useless extension candidates. Maximal degree in co-relation 6341. Up to 753 conditions per place. [2024-06-27 23:51:10,071 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 138 selfloop transitions, 45 changer transitions 0/185 dead transitions. [2024-06-27 23:51:10,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 185 transitions, 2668 flow [2024-06-27 23:51:10,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:51:10,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:51:10,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-27 23:51:10,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3727598566308244 [2024-06-27 23:51:10,072 INFO L175 Difference]: Start difference. First operand has 214 places, 173 transitions, 2143 flow. Second operand 9 states and 104 transitions. [2024-06-27 23:51:10,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 185 transitions, 2668 flow [2024-06-27 23:51:10,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 185 transitions, 2544 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-27 23:51:10,171 INFO L231 Difference]: Finished difference. Result has 218 places, 175 transitions, 2157 flow [2024-06-27 23:51:10,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2019, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2157, PETRI_PLACES=218, PETRI_TRANSITIONS=175} [2024-06-27 23:51:10,172 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 188 predicate places. [2024-06-27 23:51:10,172 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 175 transitions, 2157 flow [2024-06-27 23:51:10,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 23:51:10,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:51:10,172 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:51:10,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 23:51:10,172 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:51:10,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:51:10,172 INFO L85 PathProgramCache]: Analyzing trace with hash -176487452, now seen corresponding path program 10 times [2024-06-27 23:51:10,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:51:10,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766214235] [2024-06-27 23:51:10,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:51:10,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:51:10,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:51:11,114 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 23:51:11,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:51:11,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766214235] [2024-06-27 23:51:11,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766214235] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:51:11,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:51:11,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:51:11,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534406628] [2024-06-27 23:51:11,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:51:11,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:51:11,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:51:11,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:51:11,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:51:11,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:51:11,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 175 transitions, 2157 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 23:51:11,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:51:11,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:51:11,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:51:11,391 INFO L124 PetriNetUnfolderBase]: 477/868 cut-off events. [2024-06-27 23:51:11,391 INFO L125 PetriNetUnfolderBase]: For 51547/51547 co-relation queries the response was YES. [2024-06-27 23:51:11,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6462 conditions, 868 events. 477/868 cut-off events. For 51547/51547 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4262 event pairs, 80 based on Foata normal form. 1/869 useless extension candidates. Maximal degree in co-relation 6367. Up to 641 conditions per place. [2024-06-27 23:51:11,397 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 104 selfloop transitions, 86 changer transitions 0/192 dead transitions. [2024-06-27 23:51:11,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 192 transitions, 2877 flow [2024-06-27 23:51:11,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:51:11,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:51:11,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-27 23:51:11,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2024-06-27 23:51:11,398 INFO L175 Difference]: Start difference. First operand has 218 places, 175 transitions, 2157 flow. Second operand 9 states and 105 transitions. [2024-06-27 23:51:11,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 192 transitions, 2877 flow [2024-06-27 23:51:11,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 192 transitions, 2776 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-27 23:51:11,503 INFO L231 Difference]: Finished difference. Result has 224 places, 182 transitions, 2360 flow [2024-06-27 23:51:11,503 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2056, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2360, PETRI_PLACES=224, PETRI_TRANSITIONS=182} [2024-06-27 23:51:11,504 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 194 predicate places. [2024-06-27 23:51:11,504 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 182 transitions, 2360 flow [2024-06-27 23:51:11,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 23:51:11,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:51:11,504 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:51:11,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 23:51:11,504 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:51:11,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:51:11,504 INFO L85 PathProgramCache]: Analyzing trace with hash -176492412, now seen corresponding path program 13 times [2024-06-27 23:51:11,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:51:11,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163533930] [2024-06-27 23:51:11,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:51:11,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:51:11,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:51:12,716 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 23:51:12,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:51:12,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163533930] [2024-06-27 23:51:12,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163533930] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:51:12,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:51:12,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:51:12,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495657337] [2024-06-27 23:51:12,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:51:12,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:51:12,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:51:12,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:51:12,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:51:12,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:51:12,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 182 transitions, 2360 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:51:12,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:51:12,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:51:12,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:51:13,057 INFO L124 PetriNetUnfolderBase]: 400/773 cut-off events. [2024-06-27 23:51:13,058 INFO L125 PetriNetUnfolderBase]: For 52166/52166 co-relation queries the response was YES. [2024-06-27 23:51:13,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5932 conditions, 773 events. 400/773 cut-off events. For 52166/52166 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 3937 event pairs, 57 based on Foata normal form. 4/775 useless extension candidates. Maximal degree in co-relation 5835. Up to 545 conditions per place. [2024-06-27 23:51:13,064 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 110 selfloop transitions, 65 changer transitions 0/190 dead transitions. [2024-06-27 23:51:13,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 190 transitions, 2728 flow [2024-06-27 23:51:13,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:51:13,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:51:13,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-27 23:51:13,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3911290322580645 [2024-06-27 23:51:13,065 INFO L175 Difference]: Start difference. First operand has 224 places, 182 transitions, 2360 flow. Second operand 8 states and 97 transitions. [2024-06-27 23:51:13,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 190 transitions, 2728 flow [2024-06-27 23:51:13,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 190 transitions, 2499 flow, removed 33 selfloop flow, removed 6 redundant places. [2024-06-27 23:51:13,174 INFO L231 Difference]: Finished difference. Result has 226 places, 182 transitions, 2265 flow [2024-06-27 23:51:13,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2131, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2265, PETRI_PLACES=226, PETRI_TRANSITIONS=182} [2024-06-27 23:51:13,175 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 196 predicate places. [2024-06-27 23:51:13,175 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 182 transitions, 2265 flow [2024-06-27 23:51:13,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:51:13,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:51:13,175 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:51:13,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 23:51:13,175 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:51:13,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:51:13,176 INFO L85 PathProgramCache]: Analyzing trace with hash 36324298, now seen corresponding path program 11 times [2024-06-27 23:51:13,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:51:13,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50078878] [2024-06-27 23:51:13,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:51:13,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:51:13,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:51:14,098 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 23:51:14,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:51:14,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50078878] [2024-06-27 23:51:14,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50078878] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:51:14,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:51:14,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:51:14,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393036944] [2024-06-27 23:51:14,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:51:14,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:51:14,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:51:14,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:51:14,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:51:14,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:51:14,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 182 transitions, 2265 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 23:51:14,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:51:14,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:51:14,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:51:14,389 INFO L124 PetriNetUnfolderBase]: 474/863 cut-off events. [2024-06-27 23:51:14,389 INFO L125 PetriNetUnfolderBase]: For 49227/49227 co-relation queries the response was YES. [2024-06-27 23:51:14,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6301 conditions, 863 events. 474/863 cut-off events. For 49227/49227 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4224 event pairs, 82 based on Foata normal form. 1/864 useless extension candidates. Maximal degree in co-relation 6204. Up to 635 conditions per place. [2024-06-27 23:51:14,395 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 82 selfloop transitions, 110 changer transitions 0/194 dead transitions. [2024-06-27 23:51:14,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 194 transitions, 2824 flow [2024-06-27 23:51:14,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:51:14,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:51:14,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-27 23:51:14,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3727598566308244 [2024-06-27 23:51:14,396 INFO L175 Difference]: Start difference. First operand has 226 places, 182 transitions, 2265 flow. Second operand 9 states and 104 transitions. [2024-06-27 23:51:14,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 194 transitions, 2824 flow [2024-06-27 23:51:14,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 194 transitions, 2640 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-27 23:51:14,502 INFO L231 Difference]: Finished difference. Result has 229 places, 185 transitions, 2351 flow [2024-06-27 23:51:14,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2081, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2351, PETRI_PLACES=229, PETRI_TRANSITIONS=185} [2024-06-27 23:51:14,502 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 199 predicate places. [2024-06-27 23:51:14,502 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 185 transitions, 2351 flow [2024-06-27 23:51:14,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 23:51:14,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:51:14,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:51:14,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 23:51:14,503 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:51:14,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:51:14,503 INFO L85 PathProgramCache]: Analyzing trace with hash -176307714, now seen corresponding path program 2 times [2024-06-27 23:51:14,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:51:14,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455393121] [2024-06-27 23:51:14,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:51:14,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:51:14,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:51:15,412 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 23:51:15,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:51:15,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455393121] [2024-06-27 23:51:15,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455393121] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:51:15,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:51:15,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:51:15,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436311139] [2024-06-27 23:51:15,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:51:15,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:51:15,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:51:15,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:51:15,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:51:15,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:51:15,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 185 transitions, 2351 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:51:15,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:51:15,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:51:15,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:51:15,615 INFO L124 PetriNetUnfolderBase]: 477/870 cut-off events. [2024-06-27 23:51:15,615 INFO L125 PetriNetUnfolderBase]: For 49211/49211 co-relation queries the response was YES. [2024-06-27 23:51:15,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6344 conditions, 870 events. 477/870 cut-off events. For 49211/49211 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 4299 event pairs, 112 based on Foata normal form. 1/871 useless extension candidates. Maximal degree in co-relation 6246. Up to 782 conditions per place. [2024-06-27 23:51:15,621 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 163 selfloop transitions, 33 changer transitions 0/198 dead transitions. [2024-06-27 23:51:15,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 198 transitions, 2923 flow [2024-06-27 23:51:15,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:51:15,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:51:15,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 99 transitions. [2024-06-27 23:51:15,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39919354838709675 [2024-06-27 23:51:15,622 INFO L175 Difference]: Start difference. First operand has 229 places, 185 transitions, 2351 flow. Second operand 8 states and 99 transitions. [2024-06-27 23:51:15,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 198 transitions, 2923 flow [2024-06-27 23:51:15,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 198 transitions, 2803 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-27 23:51:15,729 INFO L231 Difference]: Finished difference. Result has 233 places, 189 transitions, 2354 flow [2024-06-27 23:51:15,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2231, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2354, PETRI_PLACES=233, PETRI_TRANSITIONS=189} [2024-06-27 23:51:15,729 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 203 predicate places. [2024-06-27 23:51:15,729 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 189 transitions, 2354 flow [2024-06-27 23:51:15,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:51:15,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:51:15,730 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:51:15,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 23:51:15,730 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:51:15,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:51:15,730 INFO L85 PathProgramCache]: Analyzing trace with hash 59867646, now seen corresponding path program 3 times [2024-06-27 23:51:15,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:51:15,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368380220] [2024-06-27 23:51:15,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:51:15,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:51:15,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:51:16,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:51:16,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:51:16,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368380220] [2024-06-27 23:51:16,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368380220] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:51:16,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:51:16,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:51:16,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726305297] [2024-06-27 23:51:16,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:51:16,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:51:16,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:51:16,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:51:16,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:51:16,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:51:16,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 189 transitions, 2354 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:51:16,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:51:16,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:51:16,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:51:16,849 INFO L124 PetriNetUnfolderBase]: 485/883 cut-off events. [2024-06-27 23:51:16,849 INFO L125 PetriNetUnfolderBase]: For 52331/52331 co-relation queries the response was YES. [2024-06-27 23:51:16,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6440 conditions, 883 events. 485/883 cut-off events. For 52331/52331 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4379 event pairs, 108 based on Foata normal form. 1/884 useless extension candidates. Maximal degree in co-relation 6342. Up to 792 conditions per place. [2024-06-27 23:51:16,856 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 159 selfloop transitions, 42 changer transitions 0/203 dead transitions. [2024-06-27 23:51:16,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 203 transitions, 3062 flow [2024-06-27 23:51:16,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:51:16,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:51:16,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 98 transitions. [2024-06-27 23:51:16,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3951612903225806 [2024-06-27 23:51:16,857 INFO L175 Difference]: Start difference. First operand has 233 places, 189 transitions, 2354 flow. Second operand 8 states and 98 transitions. [2024-06-27 23:51:16,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 203 transitions, 3062 flow [2024-06-27 23:51:16,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 203 transitions, 3013 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-27 23:51:16,975 INFO L231 Difference]: Finished difference. Result has 237 places, 193 transitions, 2450 flow [2024-06-27 23:51:16,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2305, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2450, PETRI_PLACES=237, PETRI_TRANSITIONS=193} [2024-06-27 23:51:16,976 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 207 predicate places. [2024-06-27 23:51:16,976 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 193 transitions, 2450 flow [2024-06-27 23:51:16,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:51:16,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:51:16,976 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:51:16,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 23:51:16,976 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:51:16,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:51:16,976 INFO L85 PathProgramCache]: Analyzing trace with hash 60164316, now seen corresponding path program 4 times [2024-06-27 23:51:16,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:51:16,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320393675] [2024-06-27 23:51:16,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:51:16,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:51:16,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:51:18,013 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 23:51:18,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:51:18,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320393675] [2024-06-27 23:51:18,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320393675] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:51:18,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:51:18,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:51:18,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417324972] [2024-06-27 23:51:18,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:51:18,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:51:18,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:51:18,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:51:18,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:51:18,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:51:18,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 193 transitions, 2450 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 23:51:18,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:51:18,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:51:18,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:51:18,371 INFO L124 PetriNetUnfolderBase]: 483/880 cut-off events. [2024-06-27 23:51:18,372 INFO L125 PetriNetUnfolderBase]: For 52360/52360 co-relation queries the response was YES. [2024-06-27 23:51:18,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6455 conditions, 880 events. 483/880 cut-off events. For 52360/52360 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4346 event pairs, 151 based on Foata normal form. 1/881 useless extension candidates. Maximal degree in co-relation 6355. Up to 852 conditions per place. [2024-06-27 23:51:18,378 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 183 selfloop transitions, 16 changer transitions 0/201 dead transitions. [2024-06-27 23:51:18,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 201 transitions, 2866 flow [2024-06-27 23:51:18,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:51:18,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:51:18,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 88 transitions. [2024-06-27 23:51:18,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3154121863799283 [2024-06-27 23:51:18,379 INFO L175 Difference]: Start difference. First operand has 237 places, 193 transitions, 2450 flow. Second operand 9 states and 88 transitions. [2024-06-27 23:51:18,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 201 transitions, 2866 flow [2024-06-27 23:51:18,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 201 transitions, 2771 flow, removed 19 selfloop flow, removed 4 redundant places. [2024-06-27 23:51:18,505 INFO L231 Difference]: Finished difference. Result has 242 places, 193 transitions, 2392 flow [2024-06-27 23:51:18,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2355, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2392, PETRI_PLACES=242, PETRI_TRANSITIONS=193} [2024-06-27 23:51:18,505 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 212 predicate places. [2024-06-27 23:51:18,505 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 193 transitions, 2392 flow [2024-06-27 23:51:18,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 23:51:18,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:51:18,505 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:51:18,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 23:51:18,506 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:51:18,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:51:18,506 INFO L85 PathProgramCache]: Analyzing trace with hash -176307962, now seen corresponding path program 12 times [2024-06-27 23:51:18,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:51:18,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897745031] [2024-06-27 23:51:18,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:51:18,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:51:18,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:51:19,428 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 23:51:19,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:51:19,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897745031] [2024-06-27 23:51:19,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897745031] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:51:19,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:51:19,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:51:19,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027319028] [2024-06-27 23:51:19,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:51:19,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:51:19,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:51:19,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:51:19,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:51:19,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:51:19,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 193 transitions, 2392 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 23:51:19,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:51:19,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:51:19,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:51:19,695 INFO L124 PetriNetUnfolderBase]: 494/896 cut-off events. [2024-06-27 23:51:19,696 INFO L125 PetriNetUnfolderBase]: For 55510/55510 co-relation queries the response was YES. [2024-06-27 23:51:19,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6606 conditions, 896 events. 494/896 cut-off events. For 55510/55510 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4426 event pairs, 70 based on Foata normal form. 1/897 useless extension candidates. Maximal degree in co-relation 6504. Up to 662 conditions per place. [2024-06-27 23:51:19,702 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 116 selfloop transitions, 92 changer transitions 0/210 dead transitions. [2024-06-27 23:51:19,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 210 transitions, 3284 flow [2024-06-27 23:51:19,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:51:19,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:51:19,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-27 23:51:19,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835125448028674 [2024-06-27 23:51:19,703 INFO L175 Difference]: Start difference. First operand has 242 places, 193 transitions, 2392 flow. Second operand 9 states and 107 transitions. [2024-06-27 23:51:19,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 210 transitions, 3284 flow [2024-06-27 23:51:19,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 210 transitions, 3247 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-27 23:51:19,826 INFO L231 Difference]: Finished difference. Result has 244 places, 199 transitions, 2651 flow [2024-06-27 23:51:19,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2355, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2651, PETRI_PLACES=244, PETRI_TRANSITIONS=199} [2024-06-27 23:51:19,826 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 214 predicate places. [2024-06-27 23:51:19,826 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 199 transitions, 2651 flow [2024-06-27 23:51:19,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 23:51:19,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:51:19,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:51:19,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 23:51:19,827 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:51:19,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:51:19,827 INFO L85 PathProgramCache]: Analyzing trace with hash 51586678, now seen corresponding path program 13 times [2024-06-27 23:51:19,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:51:19,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527834414] [2024-06-27 23:51:19,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:51:19,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:51:19,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:51:20,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:51:20,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:51:20,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527834414] [2024-06-27 23:51:20,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527834414] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:51:20,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:51:20,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:51:20,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573639488] [2024-06-27 23:51:20,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:51:20,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:51:20,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:51:20,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:51:20,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:51:20,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:51:20,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 199 transitions, 2651 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 23:51:20,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:51:20,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:51:20,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:51:21,048 INFO L124 PetriNetUnfolderBase]: 497/901 cut-off events. [2024-06-27 23:51:21,048 INFO L125 PetriNetUnfolderBase]: For 58059/58059 co-relation queries the response was YES. [2024-06-27 23:51:21,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6859 conditions, 901 events. 497/901 cut-off events. For 58059/58059 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4465 event pairs, 74 based on Foata normal form. 1/902 useless extension candidates. Maximal degree in co-relation 6755. Up to 666 conditions per place. [2024-06-27 23:51:21,055 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 106 selfloop transitions, 103 changer transitions 0/211 dead transitions. [2024-06-27 23:51:21,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 211 transitions, 3375 flow [2024-06-27 23:51:21,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:51:21,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:51:21,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-27 23:51:21,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2024-06-27 23:51:21,056 INFO L175 Difference]: Start difference. First operand has 244 places, 199 transitions, 2651 flow. Second operand 9 states and 105 transitions. [2024-06-27 23:51:21,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 211 transitions, 3375 flow [2024-06-27 23:51:21,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 211 transitions, 3191 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-06-27 23:51:21,190 INFO L231 Difference]: Finished difference. Result has 249 places, 201 transitions, 2722 flow [2024-06-27 23:51:21,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2469, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2722, PETRI_PLACES=249, PETRI_TRANSITIONS=201} [2024-06-27 23:51:21,191 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 219 predicate places. [2024-06-27 23:51:21,191 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 201 transitions, 2722 flow [2024-06-27 23:51:21,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 23:51:21,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:51:21,191 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:51:21,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 23:51:21,191 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:51:21,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:51:21,192 INFO L85 PathProgramCache]: Analyzing trace with hash 51593436, now seen corresponding path program 5 times [2024-06-27 23:51:21,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:51:21,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112541656] [2024-06-27 23:51:21,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:51:21,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:51:21,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:51:22,090 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 23:51:22,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:51:22,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112541656] [2024-06-27 23:51:22,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112541656] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:51:22,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:51:22,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:51:22,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544979307] [2024-06-27 23:51:22,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:51:22,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:51:22,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:51:22,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:51:22,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:51:22,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:51:22,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 201 transitions, 2722 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:51:22,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:51:22,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:51:22,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:51:22,354 INFO L124 PetriNetUnfolderBase]: 495/900 cut-off events. [2024-06-27 23:51:22,354 INFO L125 PetriNetUnfolderBase]: For 58127/58127 co-relation queries the response was YES. [2024-06-27 23:51:22,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6826 conditions, 900 events. 495/900 cut-off events. For 58127/58127 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4493 event pairs, 124 based on Foata normal form. 1/901 useless extension candidates. Maximal degree in co-relation 6721. Up to 811 conditions per place. [2024-06-27 23:51:22,362 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 168 selfloop transitions, 39 changer transitions 0/209 dead transitions. [2024-06-27 23:51:22,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 209 transitions, 3154 flow [2024-06-27 23:51:22,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:51:22,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:51:22,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-27 23:51:22,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3911290322580645 [2024-06-27 23:51:22,362 INFO L175 Difference]: Start difference. First operand has 249 places, 201 transitions, 2722 flow. Second operand 8 states and 97 transitions. [2024-06-27 23:51:22,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 209 transitions, 3154 flow [2024-06-27 23:51:22,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 209 transitions, 2905 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-27 23:51:22,501 INFO L231 Difference]: Finished difference. Result has 250 places, 201 transitions, 2556 flow [2024-06-27 23:51:22,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2473, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2556, PETRI_PLACES=250, PETRI_TRANSITIONS=201} [2024-06-27 23:51:22,502 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 220 predicate places. [2024-06-27 23:51:22,502 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 201 transitions, 2556 flow [2024-06-27 23:51:22,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:51:22,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:51:22,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:51:22,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 23:51:22,502 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:51:22,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:51:22,502 INFO L85 PathProgramCache]: Analyzing trace with hash -176314472, now seen corresponding path program 14 times [2024-06-27 23:51:22,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:51:22,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673379580] [2024-06-27 23:51:22,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:51:22,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:51:22,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:51:23,415 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 23:51:23,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:51:23,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673379580] [2024-06-27 23:51:23,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673379580] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:51:23,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:51:23,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:51:23,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295166802] [2024-06-27 23:51:23,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:51:23,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:51:23,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:51:23,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:51:23,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:51:23,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:51:23,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 201 transitions, 2556 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 23:51:23,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:51:23,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:51:23,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:51:23,721 INFO L124 PetriNetUnfolderBase]: 493/895 cut-off events. [2024-06-27 23:51:23,721 INFO L125 PetriNetUnfolderBase]: For 57100/57100 co-relation queries the response was YES. [2024-06-27 23:51:23,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6583 conditions, 895 events. 493/895 cut-off events. For 57100/57100 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4433 event pairs, 78 based on Foata normal form. 1/896 useless extension candidates. Maximal degree in co-relation 6479. Up to 661 conditions per place. [2024-06-27 23:51:23,727 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 116 selfloop transitions, 93 changer transitions 0/211 dead transitions. [2024-06-27 23:51:23,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 211 transitions, 3244 flow [2024-06-27 23:51:23,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:51:23,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:51:23,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-27 23:51:23,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835125448028674 [2024-06-27 23:51:23,729 INFO L175 Difference]: Start difference. First operand has 250 places, 201 transitions, 2556 flow. Second operand 9 states and 107 transitions. [2024-06-27 23:51:23,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 211 transitions, 3244 flow [2024-06-27 23:51:23,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 211 transitions, 3106 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-27 23:51:23,857 INFO L231 Difference]: Finished difference. Result has 251 places, 201 transitions, 2609 flow [2024-06-27 23:51:23,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2418, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2609, PETRI_PLACES=251, PETRI_TRANSITIONS=201} [2024-06-27 23:51:23,858 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 221 predicate places. [2024-06-27 23:51:23,858 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 201 transitions, 2609 flow [2024-06-27 23:51:23,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 23:51:23,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:51:23,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:51:23,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 23:51:23,859 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:51:23,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:51:23,859 INFO L85 PathProgramCache]: Analyzing trace with hash 36093658, now seen corresponding path program 15 times [2024-06-27 23:51:23,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:51:23,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707175081] [2024-06-27 23:51:23,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:51:23,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:51:23,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:51:24,786 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 23:51:24,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:51:24,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707175081] [2024-06-27 23:51:24,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707175081] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:51:24,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:51:24,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:51:24,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249734345] [2024-06-27 23:51:24,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:51:24,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:51:24,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:51:24,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:51:24,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:51:24,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:51:24,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 201 transitions, 2609 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 23:51:24,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:51:24,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:51:24,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:51:25,063 INFO L124 PetriNetUnfolderBase]: 491/892 cut-off events. [2024-06-27 23:51:25,064 INFO L125 PetriNetUnfolderBase]: For 57254/57254 co-relation queries the response was YES. [2024-06-27 23:51:25,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6591 conditions, 892 events. 491/892 cut-off events. For 57254/57254 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4419 event pairs, 78 based on Foata normal form. 1/893 useless extension candidates. Maximal degree in co-relation 6485. Up to 659 conditions per place. [2024-06-27 23:51:25,070 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 106 selfloop transitions, 102 changer transitions 0/210 dead transitions. [2024-06-27 23:51:25,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 210 transitions, 3171 flow [2024-06-27 23:51:25,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:51:25,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:51:25,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-27 23:51:25,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2024-06-27 23:51:25,071 INFO L175 Difference]: Start difference. First operand has 251 places, 201 transitions, 2609 flow. Second operand 9 states and 105 transitions. [2024-06-27 23:51:25,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 210 transitions, 3171 flow [2024-06-27 23:51:25,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 210 transitions, 2954 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-27 23:51:25,208 INFO L231 Difference]: Finished difference. Result has 252 places, 201 transitions, 2601 flow [2024-06-27 23:51:25,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2392, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2601, PETRI_PLACES=252, PETRI_TRANSITIONS=201} [2024-06-27 23:51:25,208 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 222 predicate places. [2024-06-27 23:51:25,209 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 201 transitions, 2601 flow [2024-06-27 23:51:25,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 23:51:25,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:51:25,209 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:51:25,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 23:51:25,209 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:51:25,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:51:25,210 INFO L85 PathProgramCache]: Analyzing trace with hash 60175228, now seen corresponding path program 1 times [2024-06-27 23:51:25,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:51:25,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042307203] [2024-06-27 23:51:25,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:51:25,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:51:25,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:51:26,743 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 23:51:26,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:51:26,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042307203] [2024-06-27 23:51:26,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042307203] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:51:26,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:51:26,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:51:26,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307994755] [2024-06-27 23:51:26,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:51:26,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:51:26,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:51:26,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:51:26,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:51:26,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:51:26,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 201 transitions, 2601 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states 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 23:51:26,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:51:26,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:51:26,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:51:27,303 INFO L124 PetriNetUnfolderBase]: 488/889 cut-off events. [2024-06-27 23:51:27,303 INFO L125 PetriNetUnfolderBase]: For 56951/56951 co-relation queries the response was YES. [2024-06-27 23:51:27,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6465 conditions, 889 events. 488/889 cut-off events. For 56951/56951 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4415 event pairs, 158 based on Foata normal form. 2/891 useless extension candidates. Maximal degree in co-relation 6359. Up to 855 conditions per place. [2024-06-27 23:51:27,310 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 192 selfloop transitions, 17 changer transitions 0/211 dead transitions. [2024-06-27 23:51:27,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 211 transitions, 3041 flow [2024-06-27 23:51:27,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:51:27,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:51:27,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 100 transitions. [2024-06-27 23:51:27,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2932551319648094 [2024-06-27 23:51:27,311 INFO L175 Difference]: Start difference. First operand has 252 places, 201 transitions, 2601 flow. Second operand 11 states and 100 transitions. [2024-06-27 23:51:27,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 211 transitions, 3041 flow [2024-06-27 23:51:27,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 211 transitions, 2789 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-27 23:51:27,440 INFO L231 Difference]: Finished difference. Result has 256 places, 201 transitions, 2387 flow [2024-06-27 23:51:27,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2349, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2387, PETRI_PLACES=256, PETRI_TRANSITIONS=201} [2024-06-27 23:51:27,441 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 226 predicate places. [2024-06-27 23:51:27,441 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 201 transitions, 2387 flow [2024-06-27 23:51:27,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states 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 23:51:27,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:51:27,441 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:51:27,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 23:51:27,441 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:51:27,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:51:27,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1659289175, now seen corresponding path program 1 times [2024-06-27 23:51:27,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:51:27,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571101955] [2024-06-27 23:51:27,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:51:27,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:51:27,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:51:28,345 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 23:51:28,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:51:28,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571101955] [2024-06-27 23:51:28,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571101955] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:51:28,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:51:28,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:51:28,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766907654] [2024-06-27 23:51:28,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:51:28,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:51:28,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:51:28,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:51:28,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:51:28,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:51:28,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 201 transitions, 2387 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:51:28,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:51:28,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:51:28,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:51:28,687 INFO L124 PetriNetUnfolderBase]: 470/869 cut-off events. [2024-06-27 23:51:28,688 INFO L125 PetriNetUnfolderBase]: For 56561/56565 co-relation queries the response was YES. [2024-06-27 23:51:28,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6181 conditions, 869 events. 470/869 cut-off events. For 56561/56565 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4357 event pairs, 62 based on Foata normal form. 5/873 useless extension candidates. Maximal degree in co-relation 6074. Up to 733 conditions per place. [2024-06-27 23:51:28,694 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 135 selfloop transitions, 57 changer transitions 0/215 dead transitions. [2024-06-27 23:51:28,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 215 transitions, 2855 flow [2024-06-27 23:51:28,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:51:28,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:51:28,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-27 23:51:28,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3727598566308244 [2024-06-27 23:51:28,695 INFO L175 Difference]: Start difference. First operand has 256 places, 201 transitions, 2387 flow. Second operand 9 states and 104 transitions. [2024-06-27 23:51:28,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 215 transitions, 2855 flow [2024-06-27 23:51:28,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 215 transitions, 2813 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-27 23:51:28,849 INFO L231 Difference]: Finished difference. Result has 257 places, 204 transitions, 2555 flow [2024-06-27 23:51:28,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2345, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2555, PETRI_PLACES=257, PETRI_TRANSITIONS=204} [2024-06-27 23:51:28,850 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 227 predicate places. [2024-06-27 23:51:28,850 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 204 transitions, 2555 flow [2024-06-27 23:51:28,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:51:28,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:51:28,850 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:51:28,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 23:51:28,850 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:51:28,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:51:28,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1625499923, now seen corresponding path program 2 times [2024-06-27 23:51:28,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:51:28,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695509949] [2024-06-27 23:51:28,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:51:28,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:51:28,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:51:29,850 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 23:51:29,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:51:29,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695509949] [2024-06-27 23:51:29,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695509949] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:51:29,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:51:29,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:51:29,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448531439] [2024-06-27 23:51:29,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:51:29,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:51:29,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:51:29,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:51:29,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:51:29,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:51:29,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 204 transitions, 2555 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states 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 23:51:29,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:51:29,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:51:29,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:51:30,250 INFO L124 PetriNetUnfolderBase]: 494/897 cut-off events. [2024-06-27 23:51:30,251 INFO L125 PetriNetUnfolderBase]: For 57874/57874 co-relation queries the response was YES. [2024-06-27 23:51:30,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6518 conditions, 897 events. 494/897 cut-off events. For 57874/57874 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4460 event pairs, 82 based on Foata normal form. 1/898 useless extension candidates. Maximal degree in co-relation 6409. Up to 820 conditions per place. [2024-06-27 23:51:30,260 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 182 selfloop transitions, 39 changer transitions 0/223 dead transitions. [2024-06-27 23:51:30,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 223 transitions, 3101 flow [2024-06-27 23:51:30,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:51:30,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:51:30,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-27 23:51:30,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33724340175953077 [2024-06-27 23:51:30,261 INFO L175 Difference]: Start difference. First operand has 257 places, 204 transitions, 2555 flow. Second operand 11 states and 115 transitions. [2024-06-27 23:51:30,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 223 transitions, 3101 flow [2024-06-27 23:51:30,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 223 transitions, 2971 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-27 23:51:30,423 INFO L231 Difference]: Finished difference. Result has 260 places, 207 transitions, 2585 flow [2024-06-27 23:51:30,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2431, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2585, PETRI_PLACES=260, PETRI_TRANSITIONS=207} [2024-06-27 23:51:30,423 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 230 predicate places. [2024-06-27 23:51:30,423 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 207 transitions, 2585 flow [2024-06-27 23:51:30,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states 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 23:51:30,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:51:30,423 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:51:30,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-27 23:51:30,424 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:51:30,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:51:30,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1368105683, now seen corresponding path program 3 times [2024-06-27 23:51:30,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:51:30,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765624950] [2024-06-27 23:51:30,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:51:30,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:51:30,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:51:31,621 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 23:51:31,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:51:31,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765624950] [2024-06-27 23:51:31,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765624950] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:51:31,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:51:31,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:51:31,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858354176] [2024-06-27 23:51:31,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:51:31,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:51:31,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:51:31,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:51:31,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:51:31,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:51:31,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 207 transitions, 2585 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states 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 23:51:31,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:51:31,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:51:31,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:51:32,053 INFO L124 PetriNetUnfolderBase]: 497/903 cut-off events. [2024-06-27 23:51:32,054 INFO L125 PetriNetUnfolderBase]: For 54813/54813 co-relation queries the response was YES. [2024-06-27 23:51:32,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6491 conditions, 903 events. 497/903 cut-off events. For 54813/54813 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4459 event pairs, 73 based on Foata normal form. 1/904 useless extension candidates. Maximal degree in co-relation 6383. Up to 821 conditions per place. [2024-06-27 23:51:32,061 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 188 selfloop transitions, 35 changer transitions 0/225 dead transitions. [2024-06-27 23:51:32,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 225 transitions, 3131 flow [2024-06-27 23:51:32,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:51:32,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:51:32,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-27 23:51:32,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36200716845878134 [2024-06-27 23:51:32,062 INFO L175 Difference]: Start difference. First operand has 260 places, 207 transitions, 2585 flow. Second operand 9 states and 101 transitions. [2024-06-27 23:51:32,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 225 transitions, 3131 flow [2024-06-27 23:51:32,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 225 transitions, 3034 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-27 23:51:32,206 INFO L231 Difference]: Finished difference. Result has 261 places, 211 transitions, 2639 flow [2024-06-27 23:51:32,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2488, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2639, PETRI_PLACES=261, PETRI_TRANSITIONS=211} [2024-06-27 23:51:32,207 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 231 predicate places. [2024-06-27 23:51:32,207 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 211 transitions, 2639 flow [2024-06-27 23:51:32,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states 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 23:51:32,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:51:32,207 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:51:32,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-27 23:51:32,207 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:51:32,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:51:32,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1363158796, now seen corresponding path program 1 times [2024-06-27 23:51:32,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:51:32,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829138687] [2024-06-27 23:51:32,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:51:32,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:51:32,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:51:33,107 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 23:51:33,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:51:33,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829138687] [2024-06-27 23:51:33,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829138687] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:51:33,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:51:33,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:51:33,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787013256] [2024-06-27 23:51:33,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:51:33,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:51:33,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:51:33,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:51:33,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:51:33,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:51:33,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 211 transitions, 2639 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:51:33,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:51:33,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:51:33,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:51:33,468 INFO L124 PetriNetUnfolderBase]: 500/908 cut-off events. [2024-06-27 23:51:33,468 INFO L125 PetriNetUnfolderBase]: For 56815/56815 co-relation queries the response was YES. [2024-06-27 23:51:33,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6623 conditions, 908 events. 500/908 cut-off events. For 56815/56815 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4526 event pairs, 71 based on Foata normal form. 1/909 useless extension candidates. Maximal degree in co-relation 6514. Up to 814 conditions per place. [2024-06-27 23:51:33,475 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 179 selfloop transitions, 45 changer transitions 0/226 dead transitions. [2024-06-27 23:51:33,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 226 transitions, 3147 flow [2024-06-27 23:51:33,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:51:33,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:51:33,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-27 23:51:33,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37992831541218636 [2024-06-27 23:51:33,476 INFO L175 Difference]: Start difference. First operand has 261 places, 211 transitions, 2639 flow. Second operand 9 states and 106 transitions. [2024-06-27 23:51:33,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 226 transitions, 3147 flow [2024-06-27 23:51:33,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 226 transitions, 3044 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-27 23:51:33,642 INFO L231 Difference]: Finished difference. Result has 264 places, 213 transitions, 2665 flow [2024-06-27 23:51:33,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2536, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2665, PETRI_PLACES=264, PETRI_TRANSITIONS=213} [2024-06-27 23:51:33,642 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 234 predicate places. [2024-06-27 23:51:33,642 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 213 transitions, 2665 flow [2024-06-27 23:51:33,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:51:33,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:51:33,643 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:51:33,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-27 23:51:33,643 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:51:33,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:51:33,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1095673223, now seen corresponding path program 4 times [2024-06-27 23:51:33,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:51:33,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150581806] [2024-06-27 23:51:33,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:51:33,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:51:33,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:51:34,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:51:34,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:51:34,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150581806] [2024-06-27 23:51:34,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150581806] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:51:34,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:51:34,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:51:34,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100652976] [2024-06-27 23:51:34,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:51:34,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:51:34,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:51:34,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:51:34,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:51:34,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:51:34,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 213 transitions, 2665 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states 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 23:51:34,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:51:34,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:51:34,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:51:35,086 INFO L124 PetriNetUnfolderBase]: 501/909 cut-off events. [2024-06-27 23:51:35,086 INFO L125 PetriNetUnfolderBase]: For 58127/58127 co-relation queries the response was YES. [2024-06-27 23:51:35,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6621 conditions, 909 events. 501/909 cut-off events. For 58127/58127 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 4514 event pairs, 63 based on Foata normal form. 2/911 useless extension candidates. Maximal degree in co-relation 6511. Up to 819 conditions per place. [2024-06-27 23:51:35,093 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 191 selfloop transitions, 37 changer transitions 0/230 dead transitions. [2024-06-27 23:51:35,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 230 transitions, 3225 flow [2024-06-27 23:51:35,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:51:35,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:51:35,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-27 23:51:35,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36917562724014336 [2024-06-27 23:51:35,094 INFO L175 Difference]: Start difference. First operand has 264 places, 213 transitions, 2665 flow. Second operand 9 states and 103 transitions. [2024-06-27 23:51:35,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 230 transitions, 3225 flow [2024-06-27 23:51:35,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 230 transitions, 3098 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-27 23:51:35,238 INFO L231 Difference]: Finished difference. Result has 267 places, 217 transitions, 2705 flow [2024-06-27 23:51:35,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2538, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2705, PETRI_PLACES=267, PETRI_TRANSITIONS=217} [2024-06-27 23:51:35,238 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 237 predicate places. [2024-06-27 23:51:35,238 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 217 transitions, 2705 flow [2024-06-27 23:51:35,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states 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 23:51:35,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:51:35,239 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:51:35,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-27 23:51:35,239 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:51:35,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:51:35,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1688135023, now seen corresponding path program 5 times [2024-06-27 23:51:35,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:51:35,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717482322] [2024-06-27 23:51:35,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:51:35,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:51:35,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:51:36,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:51:36,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:51:36,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717482322] [2024-06-27 23:51:36,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717482322] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:51:36,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:51:36,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:51:36,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179372220] [2024-06-27 23:51:36,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:51:36,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:51:36,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:51:36,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:51:36,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:51:36,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:51:36,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 217 transitions, 2705 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states 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 23:51:36,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:51:36,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:51:36,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:51:36,923 INFO L124 PetriNetUnfolderBase]: 512/927 cut-off events. [2024-06-27 23:51:36,924 INFO L125 PetriNetUnfolderBase]: For 61066/61066 co-relation queries the response was YES. [2024-06-27 23:51:36,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6917 conditions, 927 events. 512/927 cut-off events. For 61066/61066 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4603 event pairs, 65 based on Foata normal form. 1/928 useless extension candidates. Maximal degree in co-relation 6805. Up to 746 conditions per place. [2024-06-27 23:51:36,930 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 175 selfloop transitions, 60 changer transitions 0/237 dead transitions. [2024-06-27 23:51:36,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 237 transitions, 3471 flow [2024-06-27 23:51:36,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:51:36,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:51:36,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-27 23:51:36,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-27 23:51:36,932 INFO L175 Difference]: Start difference. First operand has 267 places, 217 transitions, 2705 flow. Second operand 9 states and 108 transitions. [2024-06-27 23:51:36,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 237 transitions, 3471 flow [2024-06-27 23:51:37,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 237 transitions, 3366 flow, removed 31 selfloop flow, removed 4 redundant places. [2024-06-27 23:51:37,110 INFO L231 Difference]: Finished difference. Result has 274 places, 224 transitions, 2880 flow [2024-06-27 23:51:37,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2600, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2880, PETRI_PLACES=274, PETRI_TRANSITIONS=224} [2024-06-27 23:51:37,110 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 244 predicate places. [2024-06-27 23:51:37,110 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 224 transitions, 2880 flow [2024-06-27 23:51:37,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states 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 23:51:37,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:51:37,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:51:37,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-27 23:51:37,111 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:51:37,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:51:37,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1335909280, now seen corresponding path program 2 times [2024-06-27 23:51:37,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:51:37,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830071846] [2024-06-27 23:51:37,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:51:37,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:51:37,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:51:37,995 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 23:51:37,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:51:37,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830071846] [2024-06-27 23:51:37,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830071846] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:51:37,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:51:37,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:51:37,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657046810] [2024-06-27 23:51:37,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:51:37,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:51:37,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:51:37,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:51:37,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:51:38,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:51:38,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 224 transitions, 2880 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states 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 23:51:38,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:51:38,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:51:38,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:51:38,312 INFO L124 PetriNetUnfolderBase]: 552/992 cut-off events. [2024-06-27 23:51:38,312 INFO L125 PetriNetUnfolderBase]: For 79664/79664 co-relation queries the response was YES. [2024-06-27 23:51:38,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8060 conditions, 992 events. 552/992 cut-off events. For 79664/79664 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 4975 event pairs, 60 based on Foata normal form. 2/994 useless extension candidates. Maximal degree in co-relation 7947. Up to 658 conditions per place. [2024-06-27 23:51:38,321 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 180 selfloop transitions, 71 changer transitions 0/254 dead transitions. [2024-06-27 23:51:38,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 254 transitions, 4140 flow [2024-06-27 23:51:38,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:51:38,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:51:38,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 127 transitions. [2024-06-27 23:51:38,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4551971326164875 [2024-06-27 23:51:38,322 INFO L175 Difference]: Start difference. First operand has 274 places, 224 transitions, 2880 flow. Second operand 9 states and 127 transitions. [2024-06-27 23:51:38,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 254 transitions, 4140 flow [2024-06-27 23:51:38,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 254 transitions, 3996 flow, removed 43 selfloop flow, removed 4 redundant places. [2024-06-27 23:51:38,513 INFO L231 Difference]: Finished difference. Result has 282 places, 235 transitions, 3138 flow [2024-06-27 23:51:38,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2752, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3138, PETRI_PLACES=282, PETRI_TRANSITIONS=235} [2024-06-27 23:51:38,513 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 252 predicate places. [2024-06-27 23:51:38,513 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 235 transitions, 3138 flow [2024-06-27 23:51:38,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states 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 23:51:38,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:51:38,513 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:51:38,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-27 23:51:38,514 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:51:38,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:51:38,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1341473253, now seen corresponding path program 6 times [2024-06-27 23:51:38,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:51:38,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263272574] [2024-06-27 23:51:38,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:51:38,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:51:38,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:51:39,680 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 23:51:39,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:51:39,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263272574] [2024-06-27 23:51:39,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263272574] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:51:39,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:51:39,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:51:39,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508475518] [2024-06-27 23:51:39,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:51:39,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:51:39,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:51:39,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:51:39,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:51:39,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:51:39,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 235 transitions, 3138 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states 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 23:51:39,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:51:39,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:51:39,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:51:40,075 INFO L124 PetriNetUnfolderBase]: 555/997 cut-off events. [2024-06-27 23:51:40,076 INFO L125 PetriNetUnfolderBase]: For 80486/80486 co-relation queries the response was YES. [2024-06-27 23:51:40,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8334 conditions, 997 events. 555/997 cut-off events. For 80486/80486 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 5016 event pairs, 60 based on Foata normal form. 1/998 useless extension candidates. Maximal degree in co-relation 8215. Up to 815 conditions per place. [2024-06-27 23:51:40,085 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 169 selfloop transitions, 80 changer transitions 0/251 dead transitions. [2024-06-27 23:51:40,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 251 transitions, 3867 flow [2024-06-27 23:51:40,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:51:40,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:51:40,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-27 23:51:40,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3580645161290323 [2024-06-27 23:51:40,085 INFO L175 Difference]: Start difference. First operand has 282 places, 235 transitions, 3138 flow. Second operand 10 states and 111 transitions. [2024-06-27 23:51:40,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 251 transitions, 3867 flow [2024-06-27 23:51:40,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 251 transitions, 3791 flow, removed 28 selfloop flow, removed 2 redundant places. [2024-06-27 23:51:40,313 INFO L231 Difference]: Finished difference. Result has 290 places, 238 transitions, 3289 flow [2024-06-27 23:51:40,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3062, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3289, PETRI_PLACES=290, PETRI_TRANSITIONS=238} [2024-06-27 23:51:40,314 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 260 predicate places. [2024-06-27 23:51:40,314 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 238 transitions, 3289 flow [2024-06-27 23:51:40,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states 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 23:51:40,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:51:40,314 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:51:40,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-27 23:51:40,314 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:51:40,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:51:40,315 INFO L85 PathProgramCache]: Analyzing trace with hash -406215497, now seen corresponding path program 7 times [2024-06-27 23:51:40,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:51:40,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536867878] [2024-06-27 23:51:40,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:51:40,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:51:40,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:51:41,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:51:41,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:51:41,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536867878] [2024-06-27 23:51:41,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536867878] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:51:41,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:51:41,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:51:41,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426757227] [2024-06-27 23:51:41,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:51:41,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:51:41,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:51:41,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:51:41,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:51:41,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:51:41,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 238 transitions, 3289 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states 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 23:51:41,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:51:41,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:51:41,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:51:41,930 INFO L124 PetriNetUnfolderBase]: 553/994 cut-off events. [2024-06-27 23:51:41,930 INFO L125 PetriNetUnfolderBase]: For 79083/79083 co-relation queries the response was YES. [2024-06-27 23:51:41,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8255 conditions, 994 events. 553/994 cut-off events. For 79083/79083 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 4989 event pairs, 64 based on Foata normal form. 1/995 useless extension candidates. Maximal degree in co-relation 8133. Up to 813 conditions per place. [2024-06-27 23:51:41,939 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 178 selfloop transitions, 70 changer transitions 0/250 dead transitions. [2024-06-27 23:51:41,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 250 transitions, 3815 flow [2024-06-27 23:51:41,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:51:41,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:51:41,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-27 23:51:41,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37992831541218636 [2024-06-27 23:51:41,940 INFO L175 Difference]: Start difference. First operand has 290 places, 238 transitions, 3289 flow. Second operand 9 states and 106 transitions. [2024-06-27 23:51:41,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 250 transitions, 3815 flow [2024-06-27 23:51:42,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 250 transitions, 3674 flow, removed 34 selfloop flow, removed 5 redundant places. [2024-06-27 23:51:42,177 INFO L231 Difference]: Finished difference. Result has 294 places, 238 transitions, 3295 flow [2024-06-27 23:51:42,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3148, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3295, PETRI_PLACES=294, PETRI_TRANSITIONS=238} [2024-06-27 23:51:42,178 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 264 predicate places. [2024-06-27 23:51:42,178 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 238 transitions, 3295 flow [2024-06-27 23:51:42,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states 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 23:51:42,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:51:42,178 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:51:42,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-27 23:51:42,179 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:51:42,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:51:42,179 INFO L85 PathProgramCache]: Analyzing trace with hash -406209700, now seen corresponding path program 3 times [2024-06-27 23:51:42,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:51:42,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972310106] [2024-06-27 23:51:42,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:51:42,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:51:42,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:51:43,053 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 23:51:43,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:51:43,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972310106] [2024-06-27 23:51:43,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972310106] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:51:43,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:51:43,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:51:43,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656679569] [2024-06-27 23:51:43,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:51:43,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:51:43,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:51:43,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:51:43,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:51:43,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:51:43,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 238 transitions, 3295 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states 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 23:51:43,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:51:43,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:51:43,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:51:43,370 INFO L124 PetriNetUnfolderBase]: 565/1014 cut-off events. [2024-06-27 23:51:43,371 INFO L125 PetriNetUnfolderBase]: For 86283/86283 co-relation queries the response was YES. [2024-06-27 23:51:43,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8525 conditions, 1014 events. 565/1014 cut-off events. For 86283/86283 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5116 event pairs, 62 based on Foata normal form. 2/1016 useless extension candidates. Maximal degree in co-relation 8404. Up to 670 conditions per place. [2024-06-27 23:51:43,380 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 173 selfloop transitions, 88 changer transitions 0/264 dead transitions. [2024-06-27 23:51:43,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 264 transitions, 4519 flow [2024-06-27 23:51:43,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:51:43,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:51:43,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 126 transitions. [2024-06-27 23:51:43,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45161290322580644 [2024-06-27 23:51:43,381 INFO L175 Difference]: Start difference. First operand has 294 places, 238 transitions, 3295 flow. Second operand 9 states and 126 transitions. [2024-06-27 23:51:43,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 264 transitions, 4519 flow [2024-06-27 23:51:43,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 264 transitions, 4353 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-27 23:51:43,623 INFO L231 Difference]: Finished difference. Result has 297 places, 245 transitions, 3487 flow [2024-06-27 23:51:43,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3129, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3487, PETRI_PLACES=297, PETRI_TRANSITIONS=245} [2024-06-27 23:51:43,624 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 267 predicate places. [2024-06-27 23:51:43,624 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 245 transitions, 3487 flow [2024-06-27 23:51:43,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states 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 23:51:43,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:51:43,624 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:51:43,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-27 23:51:43,624 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:51:43,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:51:43,624 INFO L85 PathProgramCache]: Analyzing trace with hash -406000450, now seen corresponding path program 4 times [2024-06-27 23:51:43,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:51:43,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048158420] [2024-06-27 23:51:43,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:51:43,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:51:43,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:51:44,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:51:44,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:51:44,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048158420] [2024-06-27 23:51:44,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048158420] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:51:44,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:51:44,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:51:44,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948526178] [2024-06-27 23:51:44,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:51:44,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:51:44,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:51:44,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:51:44,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:51:44,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:51:44,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 245 transitions, 3487 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:51:44,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:51:44,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:51:44,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:51:45,061 INFO L124 PetriNetUnfolderBase]: 573/1027 cut-off events. [2024-06-27 23:51:45,061 INFO L125 PetriNetUnfolderBase]: For 90525/90525 co-relation queries the response was YES. [2024-06-27 23:51:45,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8929 conditions, 1027 events. 573/1027 cut-off events. For 90525/90525 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 5202 event pairs, 55 based on Foata normal form. 1/1028 useless extension candidates. Maximal degree in co-relation 8805. Up to 808 conditions per place. [2024-06-27 23:51:45,070 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 162 selfloop transitions, 102 changer transitions 0/266 dead transitions. [2024-06-27 23:51:45,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 266 transitions, 4470 flow [2024-06-27 23:51:45,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:51:45,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:51:45,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-27 23:51:45,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40860215053763443 [2024-06-27 23:51:45,071 INFO L175 Difference]: Start difference. First operand has 297 places, 245 transitions, 3487 flow. Second operand 9 states and 114 transitions. [2024-06-27 23:51:45,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 266 transitions, 4470 flow [2024-06-27 23:51:45,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 266 transitions, 4338 flow, removed 24 selfloop flow, removed 4 redundant places. [2024-06-27 23:51:45,335 INFO L231 Difference]: Finished difference. Result has 303 places, 253 transitions, 3738 flow [2024-06-27 23:51:45,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3365, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3738, PETRI_PLACES=303, PETRI_TRANSITIONS=253} [2024-06-27 23:51:45,335 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 273 predicate places. [2024-06-27 23:51:45,335 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 253 transitions, 3738 flow [2024-06-27 23:51:45,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:51:45,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:51:45,336 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:51:45,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-27 23:51:45,336 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:51:45,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:51:45,336 INFO L85 PathProgramCache]: Analyzing trace with hash -406007890, now seen corresponding path program 5 times [2024-06-27 23:51:45,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:51:45,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778347239] [2024-06-27 23:51:45,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:51:45,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:51:45,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:51:46,231 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 23:51:46,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:51:46,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778347239] [2024-06-27 23:51:46,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778347239] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:51:46,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:51:46,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:51:46,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140558877] [2024-06-27 23:51:46,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:51:46,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:51:46,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:51:46,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:51:46,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:51:46,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:51:46,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 253 transitions, 3738 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states 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 23:51:46,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:51:46,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:51:46,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:51:46,526 INFO L124 PetriNetUnfolderBase]: 575/1031 cut-off events. [2024-06-27 23:51:46,526 INFO L125 PetriNetUnfolderBase]: For 90705/90705 co-relation queries the response was YES. [2024-06-27 23:51:46,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8792 conditions, 1031 events. 575/1031 cut-off events. For 90705/90705 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 5225 event pairs, 57 based on Foata normal form. 2/1033 useless extension candidates. Maximal degree in co-relation 8668. Up to 683 conditions per place. [2024-06-27 23:51:46,536 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 158 selfloop transitions, 110 changer transitions 0/271 dead transitions. [2024-06-27 23:51:46,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 271 transitions, 4717 flow [2024-06-27 23:51:46,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:51:46,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:51:46,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 124 transitions. [2024-06-27 23:51:46,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-27 23:51:46,538 INFO L175 Difference]: Start difference. First operand has 303 places, 253 transitions, 3738 flow. Second operand 9 states and 124 transitions. [2024-06-27 23:51:46,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 271 transitions, 4717 flow [2024-06-27 23:51:46,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 271 transitions, 4556 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-27 23:51:46,825 INFO L231 Difference]: Finished difference. Result has 308 places, 256 transitions, 3889 flow [2024-06-27 23:51:46,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3579, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3889, PETRI_PLACES=308, PETRI_TRANSITIONS=256} [2024-06-27 23:51:46,826 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 278 predicate places. [2024-06-27 23:51:46,826 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 256 transitions, 3889 flow [2024-06-27 23:51:46,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states 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 23:51:46,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:51:46,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:51:46,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-27 23:51:46,826 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:51:46,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:51:46,827 INFO L85 PathProgramCache]: Analyzing trace with hash -406000171, now seen corresponding path program 1 times [2024-06-27 23:51:46,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:51:46,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133088018] [2024-06-27 23:51:46,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:51:46,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:51:46,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:51:47,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:51:47,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:51:47,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133088018] [2024-06-27 23:51:47,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133088018] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:51:47,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:51:47,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:51:47,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083118844] [2024-06-27 23:51:47,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:51:47,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:51:47,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:51:47,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:51:47,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:51:47,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:51:47,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 256 transitions, 3889 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:51:47,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:51:47,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:51:47,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:51:48,171 INFO L124 PetriNetUnfolderBase]: 585/1048 cut-off events. [2024-06-27 23:51:48,171 INFO L125 PetriNetUnfolderBase]: For 96748/96748 co-relation queries the response was YES. [2024-06-27 23:51:48,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9115 conditions, 1048 events. 585/1048 cut-off events. For 96748/96748 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 5324 event pairs, 59 based on Foata normal form. 3/1051 useless extension candidates. Maximal degree in co-relation 8987. Up to 810 conditions per place. [2024-06-27 23:51:48,182 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 167 selfloop transitions, 104 changer transitions 0/273 dead transitions. [2024-06-27 23:51:48,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 273 transitions, 4829 flow [2024-06-27 23:51:48,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:51:48,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:51:48,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-27 23:51:48,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4157706093189964 [2024-06-27 23:51:48,182 INFO L175 Difference]: Start difference. First operand has 308 places, 256 transitions, 3889 flow. Second operand 9 states and 116 transitions. [2024-06-27 23:51:48,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 273 transitions, 4829 flow [2024-06-27 23:51:48,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 273 transitions, 4683 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-06-27 23:51:48,528 INFO L231 Difference]: Finished difference. Result has 313 places, 259 transitions, 4017 flow [2024-06-27 23:51:48,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3743, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4017, PETRI_PLACES=313, PETRI_TRANSITIONS=259} [2024-06-27 23:51:48,529 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 283 predicate places. [2024-06-27 23:51:48,529 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 259 transitions, 4017 flow [2024-06-27 23:51:48,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:51:48,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:51:48,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:51:48,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-27 23:51:48,530 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:51:48,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:51:48,530 INFO L85 PathProgramCache]: Analyzing trace with hash -948997979, now seen corresponding path program 8 times [2024-06-27 23:51:48,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:51:48,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280894983] [2024-06-27 23:51:48,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:51:48,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:51:48,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:51:49,644 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 23:51:49,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:51:49,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280894983] [2024-06-27 23:51:49,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280894983] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:51:49,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:51:49,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:51:49,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981836613] [2024-06-27 23:51:49,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:51:49,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:51:49,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:51:49,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:51:49,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:51:49,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:51:49,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 259 transitions, 4017 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states 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 23:51:49,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:51:49,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:51:49,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:51:50,093 INFO L124 PetriNetUnfolderBase]: 581/1042 cut-off events. [2024-06-27 23:51:50,093 INFO L125 PetriNetUnfolderBase]: For 90059/90059 co-relation queries the response was YES. [2024-06-27 23:51:50,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8997 conditions, 1042 events. 581/1042 cut-off events. For 90059/90059 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 5303 event pairs, 61 based on Foata normal form. 2/1044 useless extension candidates. Maximal degree in co-relation 8868. Up to 952 conditions per place. [2024-06-27 23:51:50,104 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 231 selfloop transitions, 38 changer transitions 0/271 dead transitions. [2024-06-27 23:51:50,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 271 transitions, 4641 flow [2024-06-27 23:51:50,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:51:50,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:51:50,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-27 23:51:50,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-27 23:51:50,105 INFO L175 Difference]: Start difference. First operand has 313 places, 259 transitions, 4017 flow. Second operand 10 states and 105 transitions. [2024-06-27 23:51:50,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 271 transitions, 4641 flow [2024-06-27 23:51:50,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 271 transitions, 4379 flow, removed 32 selfloop flow, removed 7 redundant places. [2024-06-27 23:51:50,429 INFO L231 Difference]: Finished difference. Result has 316 places, 261 transitions, 3905 flow [2024-06-27 23:51:50,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3755, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3905, PETRI_PLACES=316, PETRI_TRANSITIONS=261} [2024-06-27 23:51:50,430 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 286 predicate places. [2024-06-27 23:51:50,430 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 261 transitions, 3905 flow [2024-06-27 23:51:50,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states 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 23:51:50,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:51:50,431 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:51:50,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-27 23:51:50,431 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:51:50,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:51:50,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1583103045, now seen corresponding path program 9 times [2024-06-27 23:51:50,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:51:50,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738971137] [2024-06-27 23:51:50,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:51:50,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:51:50,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:51:51,683 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 23:51:51,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:51:51,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738971137] [2024-06-27 23:51:51,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738971137] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:51:51,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:51:51,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:51:51,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844320482] [2024-06-27 23:51:51,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:51:51,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:51:51,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:51:51,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:51:51,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:51:51,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:51:51,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 261 transitions, 3905 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states 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 23:51:51,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:51:51,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:51:51,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:51:52,165 INFO L124 PetriNetUnfolderBase]: 578/1037 cut-off events. [2024-06-27 23:51:52,165 INFO L125 PetriNetUnfolderBase]: For 86849/86849 co-relation queries the response was YES. [2024-06-27 23:51:52,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8718 conditions, 1037 events. 578/1037 cut-off events. For 86849/86849 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 5286 event pairs, 59 based on Foata normal form. 1/1038 useless extension candidates. Maximal degree in co-relation 8587. Up to 894 conditions per place. [2024-06-27 23:51:52,178 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 219 selfloop transitions, 51 changer transitions 0/272 dead transitions. [2024-06-27 23:51:52,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 272 transitions, 4649 flow [2024-06-27 23:51:52,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:51:52,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:51:52,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-27 23:51:52,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835125448028674 [2024-06-27 23:51:52,179 INFO L175 Difference]: Start difference. First operand has 316 places, 261 transitions, 3905 flow. Second operand 9 states and 107 transitions. [2024-06-27 23:51:52,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 272 transitions, 4649 flow [2024-06-27 23:51:52,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 272 transitions, 4478 flow, removed 49 selfloop flow, removed 9 redundant places. [2024-06-27 23:51:52,482 INFO L231 Difference]: Finished difference. Result has 317 places, 262 transitions, 3886 flow [2024-06-27 23:51:52,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3734, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3886, PETRI_PLACES=317, PETRI_TRANSITIONS=262} [2024-06-27 23:51:52,483 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 287 predicate places. [2024-06-27 23:51:52,483 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 262 transitions, 3886 flow [2024-06-27 23:51:52,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states 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 23:51:52,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:51:52,483 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:51:52,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-27 23:51:52,483 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:51:52,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:51:52,483 INFO L85 PathProgramCache]: Analyzing trace with hash 573722497, now seen corresponding path program 10 times [2024-06-27 23:51:52,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:51:52,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087496572] [2024-06-27 23:51:52,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:51:52,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:51:52,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:51:53,887 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 23:51:53,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:51:53,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087496572] [2024-06-27 23:51:53,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087496572] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:51:53,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:51:53,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:51:53,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735765977] [2024-06-27 23:51:53,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:51:53,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:51:53,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:51:53,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:51:53,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:51:53,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:51:53,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 262 transitions, 3886 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states 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 23:51:53,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:51:53,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:51:53,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:51:54,375 INFO L124 PetriNetUnfolderBase]: 575/1032 cut-off events. [2024-06-27 23:51:54,375 INFO L125 PetriNetUnfolderBase]: For 85614/85614 co-relation queries the response was YES. [2024-06-27 23:51:54,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8568 conditions, 1032 events. 575/1032 cut-off events. For 85614/85614 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 5245 event pairs, 59 based on Foata normal form. 1/1033 useless extension candidates. Maximal degree in co-relation 8439. Up to 890 conditions per place. [2024-06-27 23:51:54,385 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 216 selfloop transitions, 54 changer transitions 0/272 dead transitions. [2024-06-27 23:51:54,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 272 transitions, 4604 flow [2024-06-27 23:51:54,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:51:54,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:51:54,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-27 23:51:54,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37992831541218636 [2024-06-27 23:51:54,386 INFO L175 Difference]: Start difference. First operand has 317 places, 262 transitions, 3886 flow. Second operand 9 states and 106 transitions. [2024-06-27 23:51:54,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 272 transitions, 4604 flow [2024-06-27 23:51:54,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 272 transitions, 4405 flow, removed 28 selfloop flow, removed 10 redundant places. [2024-06-27 23:51:54,707 INFO L231 Difference]: Finished difference. Result has 316 places, 262 transitions, 3804 flow [2024-06-27 23:51:54,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3689, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3804, PETRI_PLACES=316, PETRI_TRANSITIONS=262} [2024-06-27 23:51:54,708 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 286 predicate places. [2024-06-27 23:51:54,708 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 262 transitions, 3804 flow [2024-06-27 23:51:54,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states 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 23:51:54,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:51:54,708 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:51:54,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-27 23:51:54,708 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:51:54,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:51:54,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1577533275, now seen corresponding path program 11 times [2024-06-27 23:51:54,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:51:54,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213133505] [2024-06-27 23:51:54,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:51:54,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:51:54,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:51:55,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:51:55,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:51:55,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213133505] [2024-06-27 23:51:55,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213133505] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:51:55,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:51:55,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:51:55,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187058478] [2024-06-27 23:51:55,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:51:55,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:51:55,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:51:55,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:51:55,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:51:55,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:51:55,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 262 transitions, 3804 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states 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 23:51:55,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:51:55,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:51:55,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:51:56,338 INFO L124 PetriNetUnfolderBase]: 572/1027 cut-off events. [2024-06-27 23:51:56,338 INFO L125 PetriNetUnfolderBase]: For 82199/82199 co-relation queries the response was YES. [2024-06-27 23:51:56,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8363 conditions, 1027 events. 572/1027 cut-off events. For 82199/82199 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 5236 event pairs, 59 based on Foata normal form. 1/1028 useless extension candidates. Maximal degree in co-relation 8235. Up to 886 conditions per place. [2024-06-27 23:51:56,348 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 210 selfloop transitions, 59 changer transitions 0/271 dead transitions. [2024-06-27 23:51:56,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 271 transitions, 4364 flow [2024-06-27 23:51:56,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:51:56,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:51:56,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-27 23:51:56,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-27 23:51:56,349 INFO L175 Difference]: Start difference. First operand has 316 places, 262 transitions, 3804 flow. Second operand 10 states and 109 transitions. [2024-06-27 23:51:56,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 271 transitions, 4364 flow [2024-06-27 23:51:56,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 271 transitions, 4181 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-27 23:51:56,668 INFO L231 Difference]: Finished difference. Result has 317 places, 262 transitions, 3745 flow [2024-06-27 23:51:56,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3621, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3745, PETRI_PLACES=317, PETRI_TRANSITIONS=262} [2024-06-27 23:51:56,668 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 287 predicate places. [2024-06-27 23:51:56,668 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 262 transitions, 3745 flow [2024-06-27 23:51:56,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states 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 23:51:56,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:51:56,669 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:51:56,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-27 23:51:56,669 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:51:56,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:51:56,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1170578243, now seen corresponding path program 12 times [2024-06-27 23:51:56,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:51:56,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182112088] [2024-06-27 23:51:56,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:51:56,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:51:56,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:51:57,926 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 23:51:57,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:51:57,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182112088] [2024-06-27 23:51:57,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182112088] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:51:57,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:51:57,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:51:57,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818165400] [2024-06-27 23:51:57,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:51:57,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:51:57,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:51:57,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:51:57,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:51:57,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:51:57,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 262 transitions, 3745 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states 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 23:51:57,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:51:57,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:51:57,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:51:58,279 INFO L124 PetriNetUnfolderBase]: 583/1045 cut-off events. [2024-06-27 23:51:58,279 INFO L125 PetriNetUnfolderBase]: For 85455/85455 co-relation queries the response was YES. [2024-06-27 23:51:58,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8577 conditions, 1045 events. 583/1045 cut-off events. For 85455/85455 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 5308 event pairs, 68 based on Foata normal form. 1/1046 useless extension candidates. Maximal degree in co-relation 8449. Up to 691 conditions per place. [2024-06-27 23:51:58,289 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 172 selfloop transitions, 107 changer transitions 0/281 dead transitions. [2024-06-27 23:51:58,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 281 transitions, 4833 flow [2024-06-27 23:51:58,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:51:58,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:51:58,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-27 23:51:58,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3942652329749104 [2024-06-27 23:51:58,290 INFO L175 Difference]: Start difference. First operand has 317 places, 262 transitions, 3745 flow. Second operand 9 states and 110 transitions. [2024-06-27 23:51:58,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 281 transitions, 4833 flow [2024-06-27 23:51:58,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 281 transitions, 4679 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-27 23:51:58,614 INFO L231 Difference]: Finished difference. Result has 319 places, 271 transitions, 4045 flow [2024-06-27 23:51:58,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3595, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4045, PETRI_PLACES=319, PETRI_TRANSITIONS=271} [2024-06-27 23:51:58,615 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 289 predicate places. [2024-06-27 23:51:58,615 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 271 transitions, 4045 flow [2024-06-27 23:51:58,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states 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 23:51:58,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:51:58,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:51:58,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-27 23:51:58,616 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:51:58,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:51:58,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1170578026, now seen corresponding path program 6 times [2024-06-27 23:51:58,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:51:58,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044893244] [2024-06-27 23:51:58,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:51:58,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:51:58,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:51:59,620 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 23:51:59,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:51:59,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044893244] [2024-06-27 23:51:59,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044893244] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:51:59,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:51:59,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:51:59,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059152279] [2024-06-27 23:51:59,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:51:59,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:51:59,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:51:59,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:51:59,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:51:59,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:51:59,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 271 transitions, 4045 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:51:59,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:51:59,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:51:59,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:52:00,033 INFO L124 PetriNetUnfolderBase]: 596/1066 cut-off events. [2024-06-27 23:52:00,033 INFO L125 PetriNetUnfolderBase]: For 92665/92665 co-relation queries the response was YES. [2024-06-27 23:52:00,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9094 conditions, 1066 events. 596/1066 cut-off events. For 92665/92665 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 5470 event pairs, 65 based on Foata normal form. 1/1067 useless extension candidates. Maximal degree in co-relation 8964. Up to 751 conditions per place. [2024-06-27 23:52:00,045 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 195 selfloop transitions, 95 changer transitions 0/292 dead transitions. [2024-06-27 23:52:00,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 292 transitions, 5413 flow [2024-06-27 23:52:00,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:52:00,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:52:00,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-27 23:52:00,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43010752688172044 [2024-06-27 23:52:00,046 INFO L175 Difference]: Start difference. First operand has 319 places, 271 transitions, 4045 flow. Second operand 9 states and 120 transitions. [2024-06-27 23:52:00,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 292 transitions, 5413 flow [2024-06-27 23:52:00,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 292 transitions, 5193 flow, removed 50 selfloop flow, removed 6 redundant places. [2024-06-27 23:52:00,358 INFO L231 Difference]: Finished difference. Result has 322 places, 279 transitions, 4176 flow [2024-06-27 23:52:00,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3833, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4176, PETRI_PLACES=322, PETRI_TRANSITIONS=279} [2024-06-27 23:52:00,359 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 292 predicate places. [2024-06-27 23:52:00,359 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 279 transitions, 4176 flow [2024-06-27 23:52:00,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:52:00,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:52:00,359 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:52:00,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-27 23:52:00,359 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:52:00,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:52:00,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1118912338, now seen corresponding path program 7 times [2024-06-27 23:52:00,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:52:00,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829562169] [2024-06-27 23:52:00,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:52:00,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:52:00,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:52:01,352 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 23:52:01,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:52:01,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829562169] [2024-06-27 23:52:01,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829562169] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:52:01,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:52:01,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:52:01,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308002859] [2024-06-27 23:52:01,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:52:01,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:52:01,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:52:01,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:52:01,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:52:01,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:52:01,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 279 transitions, 4176 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:52:01,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:52:01,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:52:01,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:52:01,795 INFO L124 PetriNetUnfolderBase]: 604/1079 cut-off events. [2024-06-27 23:52:01,796 INFO L125 PetriNetUnfolderBase]: For 95550/95550 co-relation queries the response was YES. [2024-06-27 23:52:01,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9301 conditions, 1079 events. 604/1079 cut-off events. For 95550/95550 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5535 event pairs, 64 based on Foata normal form. 1/1080 useless extension candidates. Maximal degree in co-relation 9173. Up to 761 conditions per place. [2024-06-27 23:52:01,807 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 183 selfloop transitions, 110 changer transitions 0/295 dead transitions. [2024-06-27 23:52:01,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 295 transitions, 5330 flow [2024-06-27 23:52:01,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:52:01,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:52:01,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-27 23:52:01,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4229390681003584 [2024-06-27 23:52:01,808 INFO L175 Difference]: Start difference. First operand has 322 places, 279 transitions, 4176 flow. Second operand 9 states and 118 transitions. [2024-06-27 23:52:01,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 295 transitions, 5330 flow [2024-06-27 23:52:02,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 295 transitions, 5194 flow, removed 27 selfloop flow, removed 3 redundant places. [2024-06-27 23:52:02,123 INFO L231 Difference]: Finished difference. Result has 328 places, 283 transitions, 4345 flow [2024-06-27 23:52:02,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4048, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4345, PETRI_PLACES=328, PETRI_TRANSITIONS=283} [2024-06-27 23:52:02,124 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 298 predicate places. [2024-06-27 23:52:02,124 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 283 transitions, 4345 flow [2024-06-27 23:52:02,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:52:02,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:52:02,124 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:52:02,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-27 23:52:02,124 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:52:02,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:52:02,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1170570586, now seen corresponding path program 8 times [2024-06-27 23:52:02,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:52:02,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521647663] [2024-06-27 23:52:02,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:52:02,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:52:02,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:52:03,128 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 23:52:03,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:52:03,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521647663] [2024-06-27 23:52:03,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521647663] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:52:03,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:52:03,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:52:03,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691133882] [2024-06-27 23:52:03,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:52:03,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:52:03,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:52:03,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:52:03,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:52:03,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:52:03,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 283 transitions, 4345 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:52:03,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:52:03,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:52:03,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:52:03,580 INFO L124 PetriNetUnfolderBase]: 602/1076 cut-off events. [2024-06-27 23:52:03,580 INFO L125 PetriNetUnfolderBase]: For 93820/93820 co-relation queries the response was YES. [2024-06-27 23:52:03,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9384 conditions, 1076 events. 602/1076 cut-off events. For 93820/93820 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5515 event pairs, 65 based on Foata normal form. 1/1077 useless extension candidates. Maximal degree in co-relation 9254. Up to 759 conditions per place. [2024-06-27 23:52:03,591 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 192 selfloop transitions, 101 changer transitions 0/295 dead transitions. [2024-06-27 23:52:03,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 295 transitions, 5425 flow [2024-06-27 23:52:03,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:52:03,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:52:03,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-27 23:52:03,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4229390681003584 [2024-06-27 23:52:03,592 INFO L175 Difference]: Start difference. First operand has 328 places, 283 transitions, 4345 flow. Second operand 9 states and 118 transitions. [2024-06-27 23:52:03,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 295 transitions, 5425 flow [2024-06-27 23:52:03,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 295 transitions, 5152 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-27 23:52:03,939 INFO L231 Difference]: Finished difference. Result has 331 places, 283 transitions, 4279 flow [2024-06-27 23:52:03,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4072, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4279, PETRI_PLACES=331, PETRI_TRANSITIONS=283} [2024-06-27 23:52:03,940 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 301 predicate places. [2024-06-27 23:52:03,940 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 283 transitions, 4279 flow [2024-06-27 23:52:03,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:52:03,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:52:03,940 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:52:03,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-27 23:52:03,941 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:52:03,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:52:03,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1118912617, now seen corresponding path program 2 times [2024-06-27 23:52:03,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:52:03,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454305273] [2024-06-27 23:52:03,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:52:03,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:52:03,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:52:05,011 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 23:52:05,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:52:05,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454305273] [2024-06-27 23:52:05,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454305273] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:52:05,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:52:05,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:52:05,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540156270] [2024-06-27 23:52:05,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:52:05,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:52:05,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:52:05,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:52:05,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:52:05,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:52:05,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 283 transitions, 4279 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:52:05,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:52:05,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:52:05,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:52:05,334 INFO L124 PetriNetUnfolderBase]: 613/1095 cut-off events. [2024-06-27 23:52:05,334 INFO L125 PetriNetUnfolderBase]: For 102434/102434 co-relation queries the response was YES. [2024-06-27 23:52:05,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9499 conditions, 1095 events. 613/1095 cut-off events. For 102434/102434 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 5628 event pairs, 65 based on Foata normal form. 3/1098 useless extension candidates. Maximal degree in co-relation 9368. Up to 765 conditions per place. [2024-06-27 23:52:05,344 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 185 selfloop transitions, 112 changer transitions 0/299 dead transitions. [2024-06-27 23:52:05,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 299 transitions, 5455 flow [2024-06-27 23:52:05,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:52:05,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:52:05,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-27 23:52:05,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43010752688172044 [2024-06-27 23:52:05,345 INFO L175 Difference]: Start difference. First operand has 331 places, 283 transitions, 4279 flow. Second operand 9 states and 120 transitions. [2024-06-27 23:52:05,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 299 transitions, 5455 flow [2024-06-27 23:52:05,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 299 transitions, 5256 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-27 23:52:05,658 INFO L231 Difference]: Finished difference. Result has 333 places, 286 transitions, 4374 flow [2024-06-27 23:52:05,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4080, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4374, PETRI_PLACES=333, PETRI_TRANSITIONS=286} [2024-06-27 23:52:05,658 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 303 predicate places. [2024-06-27 23:52:05,658 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 286 transitions, 4374 flow [2024-06-27 23:52:05,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:52:05,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:52:05,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:52:05,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-27 23:52:05,659 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:52:05,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:52:05,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1118904898, now seen corresponding path program 9 times [2024-06-27 23:52:05,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:52:05,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016225047] [2024-06-27 23:52:05,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:52:05,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:52:05,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:52:06,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:52:06,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:52:06,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016225047] [2024-06-27 23:52:06,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016225047] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:52:06,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:52:06,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:52:06,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860545254] [2024-06-27 23:52:06,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:52:06,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:52:06,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:52:06,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:52:06,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:52:06,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:52:06,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 286 transitions, 4374 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:52:06,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:52:06,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:52:06,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:52:07,081 INFO L124 PetriNetUnfolderBase]: 616/1100 cut-off events. [2024-06-27 23:52:07,082 INFO L125 PetriNetUnfolderBase]: For 98884/98884 co-relation queries the response was YES. [2024-06-27 23:52:07,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9651 conditions, 1100 events. 616/1100 cut-off events. For 98884/98884 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 5646 event pairs, 65 based on Foata normal form. 1/1101 useless extension candidates. Maximal degree in co-relation 9519. Up to 782 conditions per place. [2024-06-27 23:52:07,094 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 187 selfloop transitions, 111 changer transitions 0/300 dead transitions. [2024-06-27 23:52:07,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 300 transitions, 5515 flow [2024-06-27 23:52:07,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:52:07,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:52:07,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-27 23:52:07,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4265232974910394 [2024-06-27 23:52:07,095 INFO L175 Difference]: Start difference. First operand has 333 places, 286 transitions, 4374 flow. Second operand 9 states and 119 transitions. [2024-06-27 23:52:07,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 300 transitions, 5515 flow [2024-06-27 23:52:07,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 300 transitions, 5244 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-27 23:52:07,461 INFO L231 Difference]: Finished difference. Result has 335 places, 288 transitions, 4369 flow [2024-06-27 23:52:07,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4106, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4369, PETRI_PLACES=335, PETRI_TRANSITIONS=288} [2024-06-27 23:52:07,461 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 305 predicate places. [2024-06-27 23:52:07,461 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 288 transitions, 4369 flow [2024-06-27 23:52:07,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:52:07,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:52:07,462 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:52:07,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-27 23:52:07,462 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:52:07,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:52:07,462 INFO L85 PathProgramCache]: Analyzing trace with hash -969221866, now seen corresponding path program 10 times [2024-06-27 23:52:07,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:52:07,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175253697] [2024-06-27 23:52:07,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:52:07,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:52:07,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:52:08,636 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 23:52:08,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:52:08,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175253697] [2024-06-27 23:52:08,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175253697] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:52:08,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:52:08,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:52:08,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042647287] [2024-06-27 23:52:08,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:52:08,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:52:08,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:52:08,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:52:08,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:52:08,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:52:08,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 288 transitions, 4369 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states 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 23:52:08,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:52:08,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:52:08,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:52:09,148 INFO L124 PetriNetUnfolderBase]: 619/1107 cut-off events. [2024-06-27 23:52:09,149 INFO L125 PetriNetUnfolderBase]: For 100927/100927 co-relation queries the response was YES. [2024-06-27 23:52:09,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9653 conditions, 1107 events. 619/1107 cut-off events. For 100927/100927 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 5710 event pairs, 169 based on Foata normal form. 1/1108 useless extension candidates. Maximal degree in co-relation 9520. Up to 1076 conditions per place. [2024-06-27 23:52:09,160 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 279 selfloop transitions, 18 changer transitions 0/299 dead transitions. [2024-06-27 23:52:09,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 299 transitions, 5023 flow [2024-06-27 23:52:09,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:52:09,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:52:09,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 96 transitions. [2024-06-27 23:52:09,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3096774193548387 [2024-06-27 23:52:09,161 INFO L175 Difference]: Start difference. First operand has 335 places, 288 transitions, 4369 flow. Second operand 10 states and 96 transitions. [2024-06-27 23:52:09,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 299 transitions, 5023 flow [2024-06-27 23:52:09,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 299 transitions, 4782 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-27 23:52:09,566 INFO L231 Difference]: Finished difference. Result has 339 places, 290 transitions, 4213 flow [2024-06-27 23:52:09,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4132, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4213, PETRI_PLACES=339, PETRI_TRANSITIONS=290} [2024-06-27 23:52:09,566 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 309 predicate places. [2024-06-27 23:52:09,567 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 290 transitions, 4213 flow [2024-06-27 23:52:09,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states 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 23:52:09,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:52:09,567 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:52:09,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-27 23:52:09,567 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:52:09,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:52:09,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1599390111, now seen corresponding path program 13 times [2024-06-27 23:52:09,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:52:09,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306430296] [2024-06-27 23:52:09,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:52:09,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:52:09,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:52:10,833 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 23:52:10,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:52:10,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306430296] [2024-06-27 23:52:10,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306430296] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:52:10,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:52:10,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:52:10,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11707885] [2024-06-27 23:52:10,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:52:10,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:52:10,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:52:10,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:52:10,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:52:10,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:52:10,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 290 transitions, 4213 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states 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 23:52:10,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:52:10,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:52:10,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:52:11,287 INFO L124 PetriNetUnfolderBase]: 627/1118 cut-off events. [2024-06-27 23:52:11,287 INFO L125 PetriNetUnfolderBase]: For 106045/106045 co-relation queries the response was YES. [2024-06-27 23:52:11,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9696 conditions, 1118 events. 627/1118 cut-off events. For 106045/106045 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 5740 event pairs, 68 based on Foata normal form. 1/1119 useless extension candidates. Maximal degree in co-relation 9561. Up to 761 conditions per place. [2024-06-27 23:52:11,299 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 177 selfloop transitions, 127 changer transitions 0/306 dead transitions. [2024-06-27 23:52:11,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 306 transitions, 5450 flow [2024-06-27 23:52:11,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:52:11,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:52:11,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-27 23:52:11,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3942652329749104 [2024-06-27 23:52:11,301 INFO L175 Difference]: Start difference. First operand has 339 places, 290 transitions, 4213 flow. Second operand 9 states and 110 transitions. [2024-06-27 23:52:11,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 306 transitions, 5450 flow [2024-06-27 23:52:11,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 306 transitions, 5389 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-27 23:52:11,711 INFO L231 Difference]: Finished difference. Result has 340 places, 295 transitions, 4525 flow [2024-06-27 23:52:11,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4152, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4525, PETRI_PLACES=340, PETRI_TRANSITIONS=295} [2024-06-27 23:52:11,712 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 310 predicate places. [2024-06-27 23:52:11,712 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 295 transitions, 4525 flow [2024-06-27 23:52:11,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states 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 23:52:11,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:52:11,712 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:52:11,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-27 23:52:11,712 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:52:11,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:52:11,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1176292163, now seen corresponding path program 14 times [2024-06-27 23:52:11,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:52:11,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752800965] [2024-06-27 23:52:11,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:52:11,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:52:11,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:52:13,104 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 23:52:13,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:52:13,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752800965] [2024-06-27 23:52:13,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752800965] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:52:13,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:52:13,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:52:13,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139134298] [2024-06-27 23:52:13,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:52:13,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:52:13,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:52:13,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:52:13,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:52:13,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:52:13,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 295 transitions, 4525 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states 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 23:52:13,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:52:13,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:52:13,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:52:13,637 INFO L124 PetriNetUnfolderBase]: 633/1128 cut-off events. [2024-06-27 23:52:13,637 INFO L125 PetriNetUnfolderBase]: For 110007/110007 co-relation queries the response was YES. [2024-06-27 23:52:13,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10018 conditions, 1128 events. 633/1128 cut-off events. For 110007/110007 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 5816 event pairs, 66 based on Foata normal form. 1/1129 useless extension candidates. Maximal degree in co-relation 9882. Up to 767 conditions per place. [2024-06-27 23:52:13,649 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 189 selfloop transitions, 117 changer transitions 0/308 dead transitions. [2024-06-27 23:52:13,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 308 transitions, 5397 flow [2024-06-27 23:52:13,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:52:13,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:52:13,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-27 23:52:13,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835125448028674 [2024-06-27 23:52:13,650 INFO L175 Difference]: Start difference. First operand has 340 places, 295 transitions, 4525 flow. Second operand 9 states and 107 transitions. [2024-06-27 23:52:13,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 308 transitions, 5397 flow [2024-06-27 23:52:13,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 308 transitions, 5140 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-27 23:52:13,996 INFO L231 Difference]: Finished difference. Result has 344 places, 299 transitions, 4592 flow [2024-06-27 23:52:13,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4278, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4592, PETRI_PLACES=344, PETRI_TRANSITIONS=299} [2024-06-27 23:52:13,997 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 314 predicate places. [2024-06-27 23:52:13,997 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 299 transitions, 4592 flow [2024-06-27 23:52:13,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states 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 23:52:13,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:52:13,997 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:52:13,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-27 23:52:13,997 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:52:13,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:52:13,998 INFO L85 PathProgramCache]: Analyzing trace with hash 924973207, now seen corresponding path program 3 times [2024-06-27 23:52:13,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:52:13,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594663600] [2024-06-27 23:52:13,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:52:13,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:52:14,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:52:15,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:52:15,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:52:15,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594663600] [2024-06-27 23:52:15,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594663600] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:52:15,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:52:15,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:52:15,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614374387] [2024-06-27 23:52:15,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:52:15,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:52:15,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:52:15,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:52:15,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:52:15,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:52:15,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 299 transitions, 4592 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:52:15,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:52:15,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:52:15,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:52:15,464 INFO L124 PetriNetUnfolderBase]: 644/1147 cut-off events. [2024-06-27 23:52:15,465 INFO L125 PetriNetUnfolderBase]: For 116031/116031 co-relation queries the response was YES. [2024-06-27 23:52:15,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10140 conditions, 1147 events. 644/1147 cut-off events. For 116031/116031 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 5927 event pairs, 64 based on Foata normal form. 3/1150 useless extension candidates. Maximal degree in co-relation 10004. Up to 813 conditions per place. [2024-06-27 23:52:15,478 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 206 selfloop transitions, 107 changer transitions 0/315 dead transitions. [2024-06-27 23:52:15,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 315 transitions, 5830 flow [2024-06-27 23:52:15,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:52:15,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:52:15,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-27 23:52:15,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43010752688172044 [2024-06-27 23:52:15,479 INFO L175 Difference]: Start difference. First operand has 344 places, 299 transitions, 4592 flow. Second operand 9 states and 120 transitions. [2024-06-27 23:52:15,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 315 transitions, 5830 flow [2024-06-27 23:52:15,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 315 transitions, 5563 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-06-27 23:52:15,861 INFO L231 Difference]: Finished difference. Result has 346 places, 302 transitions, 4622 flow [2024-06-27 23:52:15,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4331, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4622, PETRI_PLACES=346, PETRI_TRANSITIONS=302} [2024-06-27 23:52:15,862 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 316 predicate places. [2024-06-27 23:52:15,862 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 302 transitions, 4622 flow [2024-06-27 23:52:15,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:52:15,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:52:15,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:52:15,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-27 23:52:15,862 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:52:15,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:52:15,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1170785633, now seen corresponding path program 15 times [2024-06-27 23:52:15,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:52:15,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145729423] [2024-06-27 23:52:15,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:52:15,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:52:15,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:52:17,311 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 23:52:17,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:52:17,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145729423] [2024-06-27 23:52:17,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145729423] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:52:17,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:52:17,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:52:17,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402608171] [2024-06-27 23:52:17,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:52:17,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:52:17,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:52:17,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:52:17,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:52:17,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:52:17,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 302 transitions, 4622 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states 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 23:52:17,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:52:17,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:52:17,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:52:17,853 INFO L124 PetriNetUnfolderBase]: 642/1144 cut-off events. [2024-06-27 23:52:17,853 INFO L125 PetriNetUnfolderBase]: For 106423/106423 co-relation queries the response was YES. [2024-06-27 23:52:17,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10026 conditions, 1144 events. 642/1144 cut-off events. For 106423/106423 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 5894 event pairs, 69 based on Foata normal form. 1/1145 useless extension candidates. Maximal degree in co-relation 9892. Up to 784 conditions per place. [2024-06-27 23:52:17,865 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 195 selfloop transitions, 114 changer transitions 0/311 dead transitions. [2024-06-27 23:52:17,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 311 transitions, 5426 flow [2024-06-27 23:52:17,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:52:17,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:52:17,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-27 23:52:17,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3942652329749104 [2024-06-27 23:52:17,866 INFO L175 Difference]: Start difference. First operand has 346 places, 302 transitions, 4622 flow. Second operand 9 states and 110 transitions. [2024-06-27 23:52:17,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 311 transitions, 5426 flow [2024-06-27 23:52:18,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 311 transitions, 5125 flow, removed 47 selfloop flow, removed 7 redundant places. [2024-06-27 23:52:18,255 INFO L231 Difference]: Finished difference. Result has 348 places, 302 transitions, 4556 flow [2024-06-27 23:52:18,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4321, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4556, PETRI_PLACES=348, PETRI_TRANSITIONS=302} [2024-06-27 23:52:18,255 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 318 predicate places. [2024-06-27 23:52:18,255 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 302 transitions, 4556 flow [2024-06-27 23:52:18,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states 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 23:52:18,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:52:18,256 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:52:18,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-27 23:52:18,256 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:52:18,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:52:18,256 INFO L85 PathProgramCache]: Analyzing trace with hash -969481057, now seen corresponding path program 4 times [2024-06-27 23:52:18,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:52:18,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212740204] [2024-06-27 23:52:18,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:52:18,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:52:18,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:52:19,516 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 23:52:19,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:52:19,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212740204] [2024-06-27 23:52:19,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212740204] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:52:19,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:52:19,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:52:19,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977082012] [2024-06-27 23:52:19,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:52:19,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:52:19,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:52:19,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:52:19,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:52:19,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:52:19,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 302 transitions, 4556 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:52:19,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:52:19,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:52:19,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:52:20,013 INFO L124 PetriNetUnfolderBase]: 653/1163 cut-off events. [2024-06-27 23:52:20,013 INFO L125 PetriNetUnfolderBase]: For 115397/115397 co-relation queries the response was YES. [2024-06-27 23:52:20,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10113 conditions, 1163 events. 653/1163 cut-off events. For 115397/115397 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 6013 event pairs, 64 based on Foata normal form. 3/1166 useless extension candidates. Maximal degree in co-relation 9977. Up to 833 conditions per place. [2024-06-27 23:52:20,026 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 183 selfloop transitions, 132 changer transitions 0/317 dead transitions. [2024-06-27 23:52:20,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 317 transitions, 5640 flow [2024-06-27 23:52:20,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:52:20,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:52:20,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-27 23:52:20,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-27 23:52:20,028 INFO L175 Difference]: Start difference. First operand has 348 places, 302 transitions, 4556 flow. Second operand 10 states and 125 transitions. [2024-06-27 23:52:20,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 317 transitions, 5640 flow [2024-06-27 23:52:20,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 317 transitions, 5396 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-27 23:52:20,431 INFO L231 Difference]: Finished difference. Result has 349 places, 305 transitions, 4661 flow [2024-06-27 23:52:20,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4316, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4661, PETRI_PLACES=349, PETRI_TRANSITIONS=305} [2024-06-27 23:52:20,432 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 319 predicate places. [2024-06-27 23:52:20,432 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 305 transitions, 4661 flow [2024-06-27 23:52:20,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:52:20,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:52:20,432 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:52:20,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-27 23:52:20,433 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:52:20,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:52:20,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1170779836, now seen corresponding path program 11 times [2024-06-27 23:52:20,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:52:20,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034753571] [2024-06-27 23:52:20,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:52:20,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:52:20,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:52:21,452 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 23:52:21,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:52:21,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034753571] [2024-06-27 23:52:21,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034753571] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:52:21,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:52:21,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:52:21,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171948549] [2024-06-27 23:52:21,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:52:21,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:52:21,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:52:21,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:52:21,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:52:21,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:52:21,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 305 transitions, 4661 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:52:21,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:52:21,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:52:21,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:52:21,904 INFO L124 PetriNetUnfolderBase]: 656/1168 cut-off events. [2024-06-27 23:52:21,904 INFO L125 PetriNetUnfolderBase]: For 109975/109975 co-relation queries the response was YES. [2024-06-27 23:52:21,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10248 conditions, 1168 events. 656/1168 cut-off events. For 109975/109975 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 6054 event pairs, 69 based on Foata normal form. 1/1169 useless extension candidates. Maximal degree in co-relation 10113. Up to 848 conditions per place. [2024-06-27 23:52:21,916 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 213 selfloop transitions, 104 changer transitions 0/319 dead transitions. [2024-06-27 23:52:21,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 319 transitions, 5867 flow [2024-06-27 23:52:21,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:52:21,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:52:21,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-27 23:52:21,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43010752688172044 [2024-06-27 23:52:21,918 INFO L175 Difference]: Start difference. First operand has 349 places, 305 transitions, 4661 flow. Second operand 9 states and 120 transitions. [2024-06-27 23:52:21,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 319 transitions, 5867 flow [2024-06-27 23:52:22,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 319 transitions, 5532 flow, removed 32 selfloop flow, removed 8 redundant places. [2024-06-27 23:52:22,347 INFO L231 Difference]: Finished difference. Result has 350 places, 307 transitions, 4581 flow [2024-06-27 23:52:22,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4330, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4581, PETRI_PLACES=350, PETRI_TRANSITIONS=307} [2024-06-27 23:52:22,347 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 320 predicate places. [2024-06-27 23:52:22,347 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 307 transitions, 4581 flow [2024-06-27 23:52:22,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:52:22,347 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:52:22,347 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:52:22,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-27 23:52:22,348 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:52:22,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:52:22,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1865421757, now seen corresponding path program 5 times [2024-06-27 23:52:22,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:52:22,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114242378] [2024-06-27 23:52:22,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:52:22,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:52:22,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:52:23,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:52:23,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:52:23,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114242378] [2024-06-27 23:52:23,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114242378] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:52:23,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:52:23,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:52:23,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075935071] [2024-06-27 23:52:23,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:52:23,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:52:23,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:52:23,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:52:23,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:52:23,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:52:23,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 307 transitions, 4581 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states 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 23:52:23,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:52:23,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:52:23,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:52:24,172 INFO L124 PetriNetUnfolderBase]: 669/1191 cut-off events. [2024-06-27 23:52:24,172 INFO L125 PetriNetUnfolderBase]: For 119223/119223 co-relation queries the response was YES. [2024-06-27 23:52:24,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10478 conditions, 1191 events. 669/1191 cut-off events. For 119223/119223 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 6195 event pairs, 165 based on Foata normal form. 1/1192 useless extension candidates. Maximal degree in co-relation 10343. Up to 1141 conditions per place. [2024-06-27 23:52:24,184 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 298 selfloop transitions, 24 changer transitions 0/324 dead transitions. [2024-06-27 23:52:24,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 324 transitions, 5559 flow [2024-06-27 23:52:24,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:52:24,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:52:24,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 109 transitions. [2024-06-27 23:52:24,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3196480938416422 [2024-06-27 23:52:24,185 INFO L175 Difference]: Start difference. First operand has 350 places, 307 transitions, 4581 flow. Second operand 11 states and 109 transitions. [2024-06-27 23:52:24,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 324 transitions, 5559 flow [2024-06-27 23:52:24,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 324 transitions, 5338 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-27 23:52:24,644 INFO L231 Difference]: Finished difference. Result has 356 places, 312 transitions, 4541 flow [2024-06-27 23:52:24,645 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4360, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4541, PETRI_PLACES=356, PETRI_TRANSITIONS=312} [2024-06-27 23:52:24,646 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 326 predicate places. [2024-06-27 23:52:24,646 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 312 transitions, 4541 flow [2024-06-27 23:52:24,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states 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 23:52:24,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:52:24,647 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:52:24,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-27 23:52:24,647 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:52:24,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:52:24,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1176142216, now seen corresponding path program 12 times [2024-06-27 23:52:24,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:52:24,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893877664] [2024-06-27 23:52:24,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:52:24,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:52:24,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:52:25,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:52:25,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:52:25,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893877664] [2024-06-27 23:52:25,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893877664] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:52:25,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:52:25,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:52:25,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363199744] [2024-06-27 23:52:25,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:52:25,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:52:25,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:52:25,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:52:25,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:52:25,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:52:25,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 312 transitions, 4541 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:52:25,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:52:25,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:52:25,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:52:26,099 INFO L124 PetriNetUnfolderBase]: 665/1182 cut-off events. [2024-06-27 23:52:26,100 INFO L125 PetriNetUnfolderBase]: For 117079/117079 co-relation queries the response was YES. [2024-06-27 23:52:26,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10242 conditions, 1182 events. 665/1182 cut-off events. For 117079/117079 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 6118 event pairs, 66 based on Foata normal form. 1/1183 useless extension candidates. Maximal degree in co-relation 10104. Up to 863 conditions per place. [2024-06-27 23:52:26,112 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 211 selfloop transitions, 110 changer transitions 0/323 dead transitions. [2024-06-27 23:52:26,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 323 transitions, 5551 flow [2024-06-27 23:52:26,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:52:26,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:52:26,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-27 23:52:26,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4157706093189964 [2024-06-27 23:52:26,113 INFO L175 Difference]: Start difference. First operand has 356 places, 312 transitions, 4541 flow. Second operand 9 states and 116 transitions. [2024-06-27 23:52:26,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 323 transitions, 5551 flow [2024-06-27 23:52:26,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 323 transitions, 5457 flow, removed 35 selfloop flow, removed 7 redundant places. [2024-06-27 23:52:26,564 INFO L231 Difference]: Finished difference. Result has 358 places, 312 transitions, 4672 flow [2024-06-27 23:52:26,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4447, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4672, PETRI_PLACES=358, PETRI_TRANSITIONS=312} [2024-06-27 23:52:26,564 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 328 predicate places. [2024-06-27 23:52:26,565 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 312 transitions, 4672 flow [2024-06-27 23:52:26,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:52:26,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:52:26,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:52:26,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-27 23:52:26,565 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:52:26,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:52:26,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1865095327, now seen corresponding path program 6 times [2024-06-27 23:52:26,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:52:26,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765256530] [2024-06-27 23:52:26,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:52:26,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:52:26,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:52:28,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:52:28,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:52:28,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765256530] [2024-06-27 23:52:28,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765256530] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:52:28,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:52:28,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:52:28,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902227941] [2024-06-27 23:52:28,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:52:28,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:52:28,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:52:28,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:52:28,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:52:28,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:52:28,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 312 transitions, 4672 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states 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 23:52:28,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:52:28,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:52:28,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:52:28,638 INFO L124 PetriNetUnfolderBase]: 663/1181 cut-off events. [2024-06-27 23:52:28,639 INFO L125 PetriNetUnfolderBase]: For 116501/116501 co-relation queries the response was YES. [2024-06-27 23:52:28,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10311 conditions, 1181 events. 663/1181 cut-off events. For 116501/116501 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 6141 event pairs, 165 based on Foata normal form. 1/1182 useless extension candidates. Maximal degree in co-relation 10172. Up to 1150 conditions per place. [2024-06-27 23:52:28,651 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 302 selfloop transitions, 18 changer transitions 0/322 dead transitions. [2024-06-27 23:52:28,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 322 transitions, 5347 flow [2024-06-27 23:52:28,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:52:28,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:52:28,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 101 transitions. [2024-06-27 23:52:28,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2961876832844575 [2024-06-27 23:52:28,652 INFO L175 Difference]: Start difference. First operand has 358 places, 312 transitions, 4672 flow. Second operand 11 states and 101 transitions. [2024-06-27 23:52:28,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 322 transitions, 5347 flow [2024-06-27 23:52:29,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 322 transitions, 5125 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-27 23:52:29,142 INFO L231 Difference]: Finished difference. Result has 360 places, 313 transitions, 4508 flow [2024-06-27 23:52:29,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4450, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4508, PETRI_PLACES=360, PETRI_TRANSITIONS=313} [2024-06-27 23:52:29,143 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 330 predicate places. [2024-06-27 23:52:29,143 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 313 transitions, 4508 flow [2024-06-27 23:52:29,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states 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 23:52:29,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:52:29,143 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:52:29,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-27 23:52:29,143 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:52:29,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:52:29,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1599182721, now seen corresponding path program 16 times [2024-06-27 23:52:29,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:52:29,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693974471] [2024-06-27 23:52:29,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:52:29,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:52:29,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:52:30,551 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 23:52:30,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:52:30,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693974471] [2024-06-27 23:52:30,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693974471] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:52:30,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:52:30,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:52:30,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34500898] [2024-06-27 23:52:30,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:52:30,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:52:30,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:52:30,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:52:30,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:52:30,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:52:30,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 313 transitions, 4508 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states 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 23:52:30,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:52:30,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:52:30,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:52:31,091 INFO L124 PetriNetUnfolderBase]: 661/1176 cut-off events. [2024-06-27 23:52:31,091 INFO L125 PetriNetUnfolderBase]: For 114064/114064 co-relation queries the response was YES. [2024-06-27 23:52:31,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10027 conditions, 1176 events. 661/1176 cut-off events. For 114064/114064 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 6094 event pairs, 67 based on Foata normal form. 1/1177 useless extension candidates. Maximal degree in co-relation 9886. Up to 817 conditions per place. [2024-06-27 23:52:31,103 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 189 selfloop transitions, 131 changer transitions 0/322 dead transitions. [2024-06-27 23:52:31,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 322 transitions, 5344 flow [2024-06-27 23:52:31,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:52:31,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:52:31,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-27 23:52:31,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37992831541218636 [2024-06-27 23:52:31,104 INFO L175 Difference]: Start difference. First operand has 360 places, 313 transitions, 4508 flow. Second operand 9 states and 106 transitions. [2024-06-27 23:52:31,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 322 transitions, 5344 flow [2024-06-27 23:52:31,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 322 transitions, 5241 flow, removed 35 selfloop flow, removed 9 redundant places. [2024-06-27 23:52:31,553 INFO L231 Difference]: Finished difference. Result has 360 places, 313 transitions, 4674 flow [2024-06-27 23:52:31,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4405, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4674, PETRI_PLACES=360, PETRI_TRANSITIONS=313} [2024-06-27 23:52:31,553 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 330 predicate places. [2024-06-27 23:52:31,553 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 313 transitions, 4674 flow [2024-06-27 23:52:31,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states 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 23:52:31,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:52:31,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:52:31,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-27 23:52:31,554 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:52:31,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:52:31,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1599188518, now seen corresponding path program 13 times [2024-06-27 23:52:31,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:52:31,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44638449] [2024-06-27 23:52:31,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:52:31,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:52:31,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:52:32,555 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 23:52:32,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:52:32,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44638449] [2024-06-27 23:52:32,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44638449] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:52:32,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:52:32,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:52:32,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168273773] [2024-06-27 23:52:32,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:52:32,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:52:32,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:52:32,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:52:32,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:52:32,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:52:32,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 313 transitions, 4674 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:52:32,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:52:32,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:52:32,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:52:32,974 INFO L124 PetriNetUnfolderBase]: 657/1169 cut-off events. [2024-06-27 23:52:32,974 INFO L125 PetriNetUnfolderBase]: For 112981/112981 co-relation queries the response was YES. [2024-06-27 23:52:32,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10088 conditions, 1169 events. 657/1169 cut-off events. For 112981/112981 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 6069 event pairs, 64 based on Foata normal form. 1/1170 useless extension candidates. Maximal degree in co-relation 9946. Up to 851 conditions per place. [2024-06-27 23:52:32,987 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 204 selfloop transitions, 118 changer transitions 0/324 dead transitions. [2024-06-27 23:52:32,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 324 transitions, 5698 flow [2024-06-27 23:52:32,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:52:32,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:52:32,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-27 23:52:32,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4157706093189964 [2024-06-27 23:52:32,988 INFO L175 Difference]: Start difference. First operand has 360 places, 313 transitions, 4674 flow. Second operand 9 states and 116 transitions. [2024-06-27 23:52:32,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 324 transitions, 5698 flow [2024-06-27 23:52:33,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 324 transitions, 5412 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-27 23:52:33,449 INFO L231 Difference]: Finished difference. Result has 361 places, 313 transitions, 4633 flow [2024-06-27 23:52:33,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4392, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4633, PETRI_PLACES=361, PETRI_TRANSITIONS=313} [2024-06-27 23:52:33,450 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 331 predicate places. [2024-06-27 23:52:33,450 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 313 transitions, 4633 flow [2024-06-27 23:52:33,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:52:33,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:52:33,450 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:52:33,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-27 23:52:33,450 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:52:33,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:52:33,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1855898278, now seen corresponding path program 14 times [2024-06-27 23:52:33,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:52:33,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508135321] [2024-06-27 23:52:33,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:52:33,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:52:33,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:52:34,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:52:34,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:52:34,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508135321] [2024-06-27 23:52:34,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508135321] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:52:34,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:52:34,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:52:34,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142804468] [2024-06-27 23:52:34,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:52:34,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:52:34,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:52:34,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:52:34,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:52:34,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:52:34,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 313 transitions, 4633 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:52:34,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:52:34,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:52:34,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:52:34,931 INFO L124 PetriNetUnfolderBase]: 660/1174 cut-off events. [2024-06-27 23:52:34,931 INFO L125 PetriNetUnfolderBase]: For 112954/112954 co-relation queries the response was YES. [2024-06-27 23:52:34,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10101 conditions, 1174 events. 660/1174 cut-off events. For 112954/112954 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 6096 event pairs, 64 based on Foata normal form. 1/1175 useless extension candidates. Maximal degree in co-relation 9960. Up to 855 conditions per place. [2024-06-27 23:52:34,944 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 191 selfloop transitions, 133 changer transitions 0/326 dead transitions. [2024-06-27 23:52:34,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 326 transitions, 5705 flow [2024-06-27 23:52:34,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:52:34,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:52:34,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-27 23:52:34,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-27 23:52:34,945 INFO L175 Difference]: Start difference. First operand has 361 places, 313 transitions, 4633 flow. Second operand 9 states and 117 transitions. [2024-06-27 23:52:34,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 326 transitions, 5705 flow [2024-06-27 23:52:35,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 326 transitions, 5434 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 23:52:35,406 INFO L231 Difference]: Finished difference. Result has 361 places, 315 transitions, 4677 flow [2024-06-27 23:52:35,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4366, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4677, PETRI_PLACES=361, PETRI_TRANSITIONS=315} [2024-06-27 23:52:35,406 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 331 predicate places. [2024-06-27 23:52:35,407 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 315 transitions, 4677 flow [2024-06-27 23:52:35,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:52:35,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:52:35,407 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:52:35,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-27 23:52:35,407 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:52:35,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:52:35,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1855890621, now seen corresponding path program 17 times [2024-06-27 23:52:35,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:52:35,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610142022] [2024-06-27 23:52:35,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:52:35,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:52:35,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:52:36,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:52:36,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:52:36,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610142022] [2024-06-27 23:52:36,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610142022] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:52:36,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:52:36,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:52:36,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903508747] [2024-06-27 23:52:36,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:52:36,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:52:36,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:52:36,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:52:36,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:52:36,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:52:36,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 315 transitions, 4677 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states 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 23:52:36,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:52:36,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:52:36,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:52:37,124 INFO L124 PetriNetUnfolderBase]: 658/1171 cut-off events. [2024-06-27 23:52:37,124 INFO L125 PetriNetUnfolderBase]: For 111221/111221 co-relation queries the response was YES. [2024-06-27 23:52:37,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10022 conditions, 1171 events. 658/1171 cut-off events. For 111221/111221 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 6059 event pairs, 71 based on Foata normal form. 1/1172 useless extension candidates. Maximal degree in co-relation 9880. Up to 813 conditions per place. [2024-06-27 23:52:37,137 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 166 selfloop transitions, 155 changer transitions 0/323 dead transitions. [2024-06-27 23:52:37,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 323 transitions, 5337 flow [2024-06-27 23:52:37,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:52:37,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:52:37,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-27 23:52:37,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3727598566308244 [2024-06-27 23:52:37,138 INFO L175 Difference]: Start difference. First operand has 361 places, 315 transitions, 4677 flow. Second operand 9 states and 104 transitions. [2024-06-27 23:52:37,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 323 transitions, 5337 flow [2024-06-27 23:52:37,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 323 transitions, 5009 flow, removed 32 selfloop flow, removed 7 redundant places. [2024-06-27 23:52:37,599 INFO L231 Difference]: Finished difference. Result has 363 places, 315 transitions, 4665 flow [2024-06-27 23:52:37,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4349, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4665, PETRI_PLACES=363, PETRI_TRANSITIONS=315} [2024-06-27 23:52:37,599 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 333 predicate places. [2024-06-27 23:52:37,600 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 315 transitions, 4665 flow [2024-06-27 23:52:37,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states 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 23:52:37,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:52:37,600 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:52:37,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-27 23:52:37,600 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:52:37,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:52:37,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1855890838, now seen corresponding path program 15 times [2024-06-27 23:52:37,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:52:37,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628482027] [2024-06-27 23:52:37,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:52:37,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:52:37,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:52:38,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:52:38,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:52:38,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628482027] [2024-06-27 23:52:38,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628482027] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:52:38,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:52:38,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:52:38,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121006706] [2024-06-27 23:52:38,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:52:38,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:52:38,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:52:38,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:52:38,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:52:38,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:52:38,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 315 transitions, 4665 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:52:38,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:52:38,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:52:38,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:52:39,011 INFO L124 PetriNetUnfolderBase]: 654/1164 cut-off events. [2024-06-27 23:52:39,011 INFO L125 PetriNetUnfolderBase]: For 108995/108995 co-relation queries the response was YES. [2024-06-27 23:52:39,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9886 conditions, 1164 events. 654/1164 cut-off events. For 108995/108995 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 6026 event pairs, 68 based on Foata normal form. 1/1165 useless extension candidates. Maximal degree in co-relation 9742. Up to 846 conditions per place. [2024-06-27 23:52:39,023 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 189 selfloop transitions, 134 changer transitions 0/325 dead transitions. [2024-06-27 23:52:39,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 325 transitions, 5515 flow [2024-06-27 23:52:39,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:52:39,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:52:39,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-27 23:52:39,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4121863799283154 [2024-06-27 23:52:39,025 INFO L175 Difference]: Start difference. First operand has 363 places, 315 transitions, 4665 flow. Second operand 9 states and 115 transitions. [2024-06-27 23:52:39,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 325 transitions, 5515 flow [2024-06-27 23:52:39,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 325 transitions, 5235 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-27 23:52:39,523 INFO L231 Difference]: Finished difference. Result has 365 places, 315 transitions, 4660 flow [2024-06-27 23:52:39,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4387, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4660, PETRI_PLACES=365, PETRI_TRANSITIONS=315} [2024-06-27 23:52:39,524 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 335 predicate places. [2024-06-27 23:52:39,524 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 315 transitions, 4660 flow [2024-06-27 23:52:39,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:52:39,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:52:39,524 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 23:52:39,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-27 23:52:39,525 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:52:39,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:52:39,525 INFO L85 PathProgramCache]: Analyzing trace with hash 738158287, now seen corresponding path program 1 times [2024-06-27 23:52:39,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:52:39,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513556902] [2024-06-27 23:52:39,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:52:39,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:52:39,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:52:40,572 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 23:52:40,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:52:40,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513556902] [2024-06-27 23:52:40,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513556902] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:52:40,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:52:40,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:52:40,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827490104] [2024-06-27 23:52:40,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:52:40,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:52:40,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:52:40,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:52:40,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:52:40,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:52:40,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 315 transitions, 4660 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:52:40,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:52:40,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:52:40,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:52:41,048 INFO L124 PetriNetUnfolderBase]: 671/1201 cut-off events. [2024-06-27 23:52:41,048 INFO L125 PetriNetUnfolderBase]: For 112721/112721 co-relation queries the response was YES. [2024-06-27 23:52:41,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10063 conditions, 1201 events. 671/1201 cut-off events. For 112721/112721 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 6335 event pairs, 95 based on Foata normal form. 2/1203 useless extension candidates. Maximal degree in co-relation 9920. Up to 1076 conditions per place. [2024-06-27 23:52:41,061 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 307 selfloop transitions, 30 changer transitions 0/339 dead transitions. [2024-06-27 23:52:41,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 339 transitions, 5453 flow [2024-06-27 23:52:41,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:52:41,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:52:41,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-06-27 23:52:41,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3313782991202346 [2024-06-27 23:52:41,062 INFO L175 Difference]: Start difference. First operand has 365 places, 315 transitions, 4660 flow. Second operand 11 states and 113 transitions. [2024-06-27 23:52:41,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 339 transitions, 5453 flow [2024-06-27 23:52:41,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 339 transitions, 5162 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 23:52:41,572 INFO L231 Difference]: Finished difference. Result has 370 places, 319 transitions, 4521 flow [2024-06-27 23:52:41,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4369, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4521, PETRI_PLACES=370, PETRI_TRANSITIONS=319} [2024-06-27 23:52:41,572 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 340 predicate places. [2024-06-27 23:52:41,572 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 319 transitions, 4521 flow [2024-06-27 23:52:41,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:52:41,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:52:41,573 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 23:52:41,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-27 23:52:41,573 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:52:41,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:52:41,573 INFO L85 PathProgramCache]: Analyzing trace with hash 341037173, now seen corresponding path program 2 times [2024-06-27 23:52:41,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:52:41,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92778508] [2024-06-27 23:52:41,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:52:41,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:52:41,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:52:42,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:52:42,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:52:42,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92778508] [2024-06-27 23:52:42,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92778508] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:52:42,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:52:42,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:52:42,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17046843] [2024-06-27 23:52:42,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:52:42,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:52:42,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:52:42,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:52:42,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:52:42,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:52:42,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 319 transitions, 4521 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:52:42,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:52:42,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:52:42,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:52:42,863 INFO L124 PetriNetUnfolderBase]: 610/1145 cut-off events. [2024-06-27 23:52:42,863 INFO L125 PetriNetUnfolderBase]: For 120032/120037 co-relation queries the response was YES. [2024-06-27 23:52:42,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9588 conditions, 1145 events. 610/1145 cut-off events. For 120032/120037 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 6323 event pairs, 23 based on Foata normal form. 7/1150 useless extension candidates. Maximal degree in co-relation 9440. Up to 739 conditions per place. [2024-06-27 23:52:42,877 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 179 selfloop transitions, 60 changer transitions 0/337 dead transitions. [2024-06-27 23:52:42,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 337 transitions, 5130 flow [2024-06-27 23:52:42,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:52:42,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:52:42,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 108 transitions. [2024-06-27 23:52:42,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43548387096774194 [2024-06-27 23:52:42,878 INFO L175 Difference]: Start difference. First operand has 370 places, 319 transitions, 4521 flow. Second operand 8 states and 108 transitions. [2024-06-27 23:52:42,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 337 transitions, 5130 flow [2024-06-27 23:52:43,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 337 transitions, 4964 flow, removed 48 selfloop flow, removed 8 redundant places. [2024-06-27 23:52:43,384 INFO L231 Difference]: Finished difference. Result has 371 places, 323 transitions, 4622 flow [2024-06-27 23:52:43,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4396, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4622, PETRI_PLACES=371, PETRI_TRANSITIONS=323} [2024-06-27 23:52:43,384 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 341 predicate places. [2024-06-27 23:52:43,384 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 323 transitions, 4622 flow [2024-06-27 23:52:43,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:52:43,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:52:43,385 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 23:52:43,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-27 23:52:43,385 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:52:43,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:52:43,385 INFO L85 PathProgramCache]: Analyzing trace with hash -147706043, now seen corresponding path program 1 times [2024-06-27 23:52:43,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:52:43,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176839397] [2024-06-27 23:52:43,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:52:43,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:52:43,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:52:44,650 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 23:52:44,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:52:44,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176839397] [2024-06-27 23:52:44,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176839397] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:52:44,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:52:44,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:52:44,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876292159] [2024-06-27 23:52:44,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:52:44,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:52:44,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:52:44,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:52:44,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:52:44,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:52:44,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 323 transitions, 4622 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:52:44,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:52:44,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:52:44,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:52:45,216 INFO L124 PetriNetUnfolderBase]: 676/1212 cut-off events. [2024-06-27 23:52:45,216 INFO L125 PetriNetUnfolderBase]: For 110737/110737 co-relation queries the response was YES. [2024-06-27 23:52:45,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10024 conditions, 1212 events. 676/1212 cut-off events. For 110737/110737 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 6468 event pairs, 104 based on Foata normal form. 1/1213 useless extension candidates. Maximal degree in co-relation 9876. Up to 1072 conditions per place. [2024-06-27 23:52:45,230 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 266 selfloop transitions, 71 changer transitions 0/339 dead transitions. [2024-06-27 23:52:45,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 339 transitions, 5336 flow [2024-06-27 23:52:45,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:52:45,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:52:45,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-27 23:52:45,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3580645161290323 [2024-06-27 23:52:45,231 INFO L175 Difference]: Start difference. First operand has 371 places, 323 transitions, 4622 flow. Second operand 10 states and 111 transitions. [2024-06-27 23:52:45,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 339 transitions, 5336 flow [2024-06-27 23:52:45,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 339 transitions, 5202 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-06-27 23:52:45,767 INFO L231 Difference]: Finished difference. Result has 376 places, 323 transitions, 4643 flow [2024-06-27 23:52:45,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4488, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4643, PETRI_PLACES=376, PETRI_TRANSITIONS=323} [2024-06-27 23:52:45,767 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 346 predicate places. [2024-06-27 23:52:45,767 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 323 transitions, 4643 flow [2024-06-27 23:52:45,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:52:45,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:52:45,768 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 23:52:45,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-27 23:52:45,768 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:52:45,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:52:45,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1162810275, now seen corresponding path program 3 times [2024-06-27 23:52:45,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:52:45,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767773088] [2024-06-27 23:52:45,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:52:45,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:52:45,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:52:46,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:52:46,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:52:46,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767773088] [2024-06-27 23:52:46,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767773088] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:52:46,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:52:46,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:52:46,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730467146] [2024-06-27 23:52:46,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:52:46,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:52:46,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:52:46,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:52:46,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:52:47,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:52:47,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 323 transitions, 4643 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:52:47,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:52:47,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:52:47,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:52:47,455 INFO L124 PetriNetUnfolderBase]: 691/1241 cut-off events. [2024-06-27 23:52:47,455 INFO L125 PetriNetUnfolderBase]: For 128120/128120 co-relation queries the response was YES. [2024-06-27 23:52:47,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10418 conditions, 1241 events. 691/1241 cut-off events. For 128120/128120 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 6682 event pairs, 78 based on Foata normal form. 2/1243 useless extension candidates. Maximal degree in co-relation 10269. Up to 1121 conditions per place. [2024-06-27 23:52:47,470 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 307 selfloop transitions, 39 changer transitions 0/348 dead transitions. [2024-06-27 23:52:47,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 348 transitions, 5665 flow [2024-06-27 23:52:47,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:52:47,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:52:47,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 126 transitions. [2024-06-27 23:52:47,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-27 23:52:47,471 INFO L175 Difference]: Start difference. First operand has 376 places, 323 transitions, 4643 flow. Second operand 12 states and 126 transitions. [2024-06-27 23:52:47,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 348 transitions, 5665 flow [2024-06-27 23:52:48,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 348 transitions, 5593 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-27 23:52:48,077 INFO L231 Difference]: Finished difference. Result has 385 places, 327 transitions, 4756 flow [2024-06-27 23:52:48,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4571, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4756, PETRI_PLACES=385, PETRI_TRANSITIONS=327} [2024-06-27 23:52:48,078 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 355 predicate places. [2024-06-27 23:52:48,078 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 327 transitions, 4756 flow [2024-06-27 23:52:48,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:52:48,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:52:48,078 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 23:52:48,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-27 23:52:48,078 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:52:48,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:52:48,078 INFO L85 PathProgramCache]: Analyzing trace with hash 319969023, now seen corresponding path program 4 times [2024-06-27 23:52:48,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:52:48,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262704028] [2024-06-27 23:52:48,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:52:48,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:52:48,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:52:49,263 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 23:52:49,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:52:49,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262704028] [2024-06-27 23:52:49,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262704028] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:52:49,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:52:49,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:52:49,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061485905] [2024-06-27 23:52:49,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:52:49,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:52:49,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:52:49,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:52:49,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:52:49,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:52:49,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 327 transitions, 4756 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:52:49,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:52:49,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:52:49,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:52:49,815 INFO L124 PetriNetUnfolderBase]: 695/1249 cut-off events. [2024-06-27 23:52:49,815 INFO L125 PetriNetUnfolderBase]: For 131660/131660 co-relation queries the response was YES. [2024-06-27 23:52:49,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10594 conditions, 1249 events. 695/1249 cut-off events. For 131660/131660 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 6713 event pairs, 98 based on Foata normal form. 2/1251 useless extension candidates. Maximal degree in co-relation 10442. Up to 1164 conditions per place. [2024-06-27 23:52:49,829 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 304 selfloop transitions, 40 changer transitions 0/346 dead transitions. [2024-06-27 23:52:49,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 346 transitions, 5527 flow [2024-06-27 23:52:49,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:52:49,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:52:49,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 123 transitions. [2024-06-27 23:52:49,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33064516129032256 [2024-06-27 23:52:49,830 INFO L175 Difference]: Start difference. First operand has 385 places, 327 transitions, 4756 flow. Second operand 12 states and 123 transitions. [2024-06-27 23:52:49,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 346 transitions, 5527 flow [2024-06-27 23:52:50,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 346 transitions, 5410 flow, removed 36 selfloop flow, removed 6 redundant places. [2024-06-27 23:52:50,415 INFO L231 Difference]: Finished difference. Result has 391 places, 328 transitions, 4762 flow [2024-06-27 23:52:50,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4649, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4762, PETRI_PLACES=391, PETRI_TRANSITIONS=328} [2024-06-27 23:52:50,416 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 361 predicate places. [2024-06-27 23:52:50,416 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 328 transitions, 4762 flow [2024-06-27 23:52:50,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:52:50,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:52:50,416 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 23:52:50,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-27 23:52:50,416 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:52:50,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:52:50,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1406972907, now seen corresponding path program 5 times [2024-06-27 23:52:50,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:52:50,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105114639] [2024-06-27 23:52:50,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:52:50,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:52:50,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:52:51,654 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 23:52:51,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:52:51,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105114639] [2024-06-27 23:52:51,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105114639] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:52:51,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:52:51,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:52:51,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170644359] [2024-06-27 23:52:51,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:52:51,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:52:51,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:52:51,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:52:51,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:52:51,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:52:51,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 328 transitions, 4762 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:52:51,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:52:51,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:52:51,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:52:52,179 INFO L124 PetriNetUnfolderBase]: 719/1297 cut-off events. [2024-06-27 23:52:52,179 INFO L125 PetriNetUnfolderBase]: For 142904/142904 co-relation queries the response was YES. [2024-06-27 23:52:52,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10880 conditions, 1297 events. 719/1297 cut-off events. For 142904/142904 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 7060 event pairs, 115 based on Foata normal form. 4/1301 useless extension candidates. Maximal degree in co-relation 10726. Up to 1133 conditions per place. [2024-06-27 23:52:52,194 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 301 selfloop transitions, 49 changer transitions 0/352 dead transitions. [2024-06-27 23:52:52,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 352 transitions, 5848 flow [2024-06-27 23:52:52,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:52:52,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:52:52,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-27 23:52:52,195 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36129032258064514 [2024-06-27 23:52:52,195 INFO L175 Difference]: Start difference. First operand has 391 places, 328 transitions, 4762 flow. Second operand 10 states and 112 transitions. [2024-06-27 23:52:52,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 352 transitions, 5848 flow [2024-06-27 23:52:52,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 352 transitions, 5729 flow, removed 22 selfloop flow, removed 10 redundant places. [2024-06-27 23:52:52,748 INFO L231 Difference]: Finished difference. Result has 392 places, 334 transitions, 4919 flow [2024-06-27 23:52:52,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4643, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4919, PETRI_PLACES=392, PETRI_TRANSITIONS=334} [2024-06-27 23:52:52,748 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 362 predicate places. [2024-06-27 23:52:52,749 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 334 transitions, 4919 flow [2024-06-27 23:52:52,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:52:52,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:52:52,749 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 23:52:52,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-27 23:52:52,749 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:52:52,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:52:52,749 INFO L85 PathProgramCache]: Analyzing trace with hash 543640511, now seen corresponding path program 6 times [2024-06-27 23:52:52,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:52:52,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124748357] [2024-06-27 23:52:52,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:52:52,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:52:52,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:52:54,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:52:54,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:52:54,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124748357] [2024-06-27 23:52:54,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124748357] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:52:54,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:52:54,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:52:54,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70903546] [2024-06-27 23:52:54,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:52:54,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:52:54,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:52:54,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:52:54,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:52:54,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:52:54,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 334 transitions, 4919 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:52:54,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:52:54,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:52:54,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:52:54,667 INFO L124 PetriNetUnfolderBase]: 723/1306 cut-off events. [2024-06-27 23:52:54,667 INFO L125 PetriNetUnfolderBase]: For 138001/138001 co-relation queries the response was YES. [2024-06-27 23:52:54,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11000 conditions, 1306 events. 723/1306 cut-off events. For 138001/138001 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 7140 event pairs, 76 based on Foata normal form. 2/1308 useless extension candidates. Maximal degree in co-relation 10845. Up to 1177 conditions per place. [2024-06-27 23:52:54,682 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 316 selfloop transitions, 37 changer transitions 0/355 dead transitions. [2024-06-27 23:52:54,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 355 transitions, 5921 flow [2024-06-27 23:52:54,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:52:54,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:52:54,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-27 23:52:54,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34310850439882695 [2024-06-27 23:52:54,685 INFO L175 Difference]: Start difference. First operand has 392 places, 334 transitions, 4919 flow. Second operand 11 states and 117 transitions. [2024-06-27 23:52:54,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 355 transitions, 5921 flow [2024-06-27 23:52:55,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 355 transitions, 5802 flow, removed 42 selfloop flow, removed 6 redundant places. [2024-06-27 23:52:55,404 INFO L231 Difference]: Finished difference. Result has 398 places, 336 transitions, 4944 flow [2024-06-27 23:52:55,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4800, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4944, PETRI_PLACES=398, PETRI_TRANSITIONS=336} [2024-06-27 23:52:55,404 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 368 predicate places. [2024-06-27 23:52:55,404 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 336 transitions, 4944 flow [2024-06-27 23:52:55,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:52:55,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:52:55,404 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 23:52:55,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-27 23:52:55,405 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:52:55,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:52:55,405 INFO L85 PathProgramCache]: Analyzing trace with hash 686192027, now seen corresponding path program 2 times [2024-06-27 23:52:55,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:52:55,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750160161] [2024-06-27 23:52:55,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:52:55,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:52:55,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:52:56,606 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 23:52:56,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:52:56,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750160161] [2024-06-27 23:52:56,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750160161] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:52:56,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:52:56,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:52:56,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869209354] [2024-06-27 23:52:56,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:52:56,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:52:56,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:52:56,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:52:56,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:52:56,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:52:56,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 336 transitions, 4944 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states 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 23:52:56,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:52:56,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:52:56,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:52:57,150 INFO L124 PetriNetUnfolderBase]: 721/1303 cut-off events. [2024-06-27 23:52:57,151 INFO L125 PetriNetUnfolderBase]: For 130267/130267 co-relation queries the response was YES. [2024-06-27 23:52:57,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10856 conditions, 1303 events. 721/1303 cut-off events. For 130267/130267 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 7120 event pairs, 86 based on Foata normal form. 1/1304 useless extension candidates. Maximal degree in co-relation 10700. Up to 1159 conditions per place. [2024-06-27 23:52:57,163 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 291 selfloop transitions, 55 changer transitions 0/349 dead transitions. [2024-06-27 23:52:57,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 349 transitions, 5668 flow [2024-06-27 23:52:57,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:52:57,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:52:57,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-27 23:52:57,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4229390681003584 [2024-06-27 23:52:57,164 INFO L175 Difference]: Start difference. First operand has 398 places, 336 transitions, 4944 flow. Second operand 9 states and 118 transitions. [2024-06-27 23:52:57,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 349 transitions, 5668 flow [2024-06-27 23:52:57,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 349 transitions, 5524 flow, removed 37 selfloop flow, removed 8 redundant places. [2024-06-27 23:52:57,836 INFO L231 Difference]: Finished difference. Result has 399 places, 336 transitions, 4921 flow [2024-06-27 23:52:57,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4800, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4921, PETRI_PLACES=399, PETRI_TRANSITIONS=336} [2024-06-27 23:52:57,836 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 369 predicate places. [2024-06-27 23:52:57,836 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 336 transitions, 4921 flow [2024-06-27 23:52:57,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states 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 23:52:57,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:52:57,836 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 23:52:57,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-27 23:52:57,837 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:52:57,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:52:57,837 INFO L85 PathProgramCache]: Analyzing trace with hash 686186261, now seen corresponding path program 7 times [2024-06-27 23:52:57,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:52:57,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46501767] [2024-06-27 23:52:57,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:52:57,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:52:57,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:52:59,227 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 23:52:59,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:52:59,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46501767] [2024-06-27 23:52:59,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46501767] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:52:59,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:52:59,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:52:59,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758597636] [2024-06-27 23:52:59,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:52:59,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:52:59,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:52:59,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:52:59,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:52:59,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:52:59,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 336 transitions, 4921 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:52:59,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:52:59,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:52:59,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:52:59,796 INFO L124 PetriNetUnfolderBase]: 718/1298 cut-off events. [2024-06-27 23:52:59,796 INFO L125 PetriNetUnfolderBase]: For 126911/126911 co-relation queries the response was YES. [2024-06-27 23:52:59,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10554 conditions, 1298 events. 718/1298 cut-off events. For 126911/126911 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 7091 event pairs, 87 based on Foata normal form. 2/1300 useless extension candidates. Maximal degree in co-relation 10397. Up to 1208 conditions per place. [2024-06-27 23:52:59,811 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 314 selfloop transitions, 36 changer transitions 0/352 dead transitions. [2024-06-27 23:52:59,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 352 transitions, 5661 flow [2024-06-27 23:52:59,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:52:59,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:52:59,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-27 23:52:59,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-27 23:52:59,812 INFO L175 Difference]: Start difference. First operand has 399 places, 336 transitions, 4921 flow. Second operand 10 states and 109 transitions. [2024-06-27 23:52:59,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 352 transitions, 5661 flow [2024-06-27 23:53:00,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 352 transitions, 5403 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-06-27 23:53:00,439 INFO L231 Difference]: Finished difference. Result has 402 places, 336 transitions, 4739 flow [2024-06-27 23:53:00,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4663, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4739, PETRI_PLACES=402, PETRI_TRANSITIONS=336} [2024-06-27 23:53:00,439 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 372 predicate places. [2024-06-27 23:53:00,439 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 336 transitions, 4739 flow [2024-06-27 23:53:00,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:53:00,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:53:00,439 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 23:53:00,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-27 23:53:00,440 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:53:00,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:53:00,440 INFO L85 PathProgramCache]: Analyzing trace with hash -452079561, now seen corresponding path program 8 times [2024-06-27 23:53:00,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:53:00,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446245366] [2024-06-27 23:53:00,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:53:00,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:53:00,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:53:01,633 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 23:53:01,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:53:01,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446245366] [2024-06-27 23:53:01,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446245366] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:53:01,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:53:01,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:53:01,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825253131] [2024-06-27 23:53:01,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:53:01,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:53:01,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:53:01,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:53:01,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:53:01,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:53:01,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 336 transitions, 4739 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:53:01,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:53:01,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:53:01,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:53:02,102 INFO L124 PetriNetUnfolderBase]: 722/1305 cut-off events. [2024-06-27 23:53:02,102 INFO L125 PetriNetUnfolderBase]: For 128598/128598 co-relation queries the response was YES. [2024-06-27 23:53:02,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10477 conditions, 1305 events. 722/1305 cut-off events. For 128598/128598 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 7121 event pairs, 68 based on Foata normal form. 2/1307 useless extension candidates. Maximal degree in co-relation 10319. Up to 1210 conditions per place. [2024-06-27 23:53:02,118 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 329 selfloop transitions, 26 changer transitions 0/357 dead transitions. [2024-06-27 23:53:02,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 357 transitions, 5557 flow [2024-06-27 23:53:02,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:53:02,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:53:02,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-27 23:53:02,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-27 23:53:02,119 INFO L175 Difference]: Start difference. First operand has 402 places, 336 transitions, 4739 flow. Second operand 10 states and 109 transitions. [2024-06-27 23:53:02,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 357 transitions, 5557 flow [2024-06-27 23:53:02,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 357 transitions, 5487 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-27 23:53:02,738 INFO L231 Difference]: Finished difference. Result has 405 places, 338 transitions, 4791 flow [2024-06-27 23:53:02,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4669, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4791, PETRI_PLACES=405, PETRI_TRANSITIONS=338} [2024-06-27 23:53:02,739 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 375 predicate places. [2024-06-27 23:53:02,739 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 338 transitions, 4791 flow [2024-06-27 23:53:02,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:53:02,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:53:02,739 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 23:53:02,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-27 23:53:02,739 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:53:02,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:53:02,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1950082977, now seen corresponding path program 9 times [2024-06-27 23:53:02,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:53:02,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940210223] [2024-06-27 23:53:02,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:53:02,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:53:02,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:53:03,981 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 23:53:03,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:53:03,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940210223] [2024-06-27 23:53:03,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940210223] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:53:03,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:53:03,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:53:03,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285846065] [2024-06-27 23:53:03,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:53:03,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:53:03,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:53:03,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:53:03,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:53:04,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:53:04,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 338 transitions, 4791 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:53:04,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:53:04,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:53:04,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:53:04,564 INFO L124 PetriNetUnfolderBase]: 737/1334 cut-off events. [2024-06-27 23:53:04,564 INFO L125 PetriNetUnfolderBase]: For 142964/142964 co-relation queries the response was YES. [2024-06-27 23:53:04,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10993 conditions, 1334 events. 737/1334 cut-off events. For 142964/142964 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 7355 event pairs, 73 based on Foata normal form. 2/1336 useless extension candidates. Maximal degree in co-relation 10833. Up to 1214 conditions per place. [2024-06-27 23:53:04,581 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 324 selfloop transitions, 34 changer transitions 0/360 dead transitions. [2024-06-27 23:53:04,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 360 transitions, 5863 flow [2024-06-27 23:53:04,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:53:04,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:53:04,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-27 23:53:04,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36774193548387096 [2024-06-27 23:53:04,582 INFO L175 Difference]: Start difference. First operand has 405 places, 338 transitions, 4791 flow. Second operand 10 states and 114 transitions. [2024-06-27 23:53:04,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 360 transitions, 5863 flow [2024-06-27 23:53:05,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 360 transitions, 5759 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-06-27 23:53:05,260 INFO L231 Difference]: Finished difference. Result has 410 places, 342 transitions, 4882 flow [2024-06-27 23:53:05,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4687, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4882, PETRI_PLACES=410, PETRI_TRANSITIONS=342} [2024-06-27 23:53:05,261 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 380 predicate places. [2024-06-27 23:53:05,261 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 342 transitions, 4882 flow [2024-06-27 23:53:05,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:53:05,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:53:05,261 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 23:53:05,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-27 23:53:05,261 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:53:05,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:53:05,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1020531309, now seen corresponding path program 10 times [2024-06-27 23:53:05,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:53:05,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220719146] [2024-06-27 23:53:05,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:53:05,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:53:05,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:53:06,568 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 23:53:06,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:53:06,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220719146] [2024-06-27 23:53:06,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220719146] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:53:06,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:53:06,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:53:06,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736459873] [2024-06-27 23:53:06,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:53:06,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:53:06,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:53:06,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:53:06,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:53:06,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:53:06,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 342 transitions, 4882 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:53:06,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:53:06,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:53:06,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:53:07,200 INFO L124 PetriNetUnfolderBase]: 745/1350 cut-off events. [2024-06-27 23:53:07,200 INFO L125 PetriNetUnfolderBase]: For 157436/157436 co-relation queries the response was YES. [2024-06-27 23:53:07,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11194 conditions, 1350 events. 745/1350 cut-off events. For 157436/157436 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 7469 event pairs, 79 based on Foata normal form. 4/1354 useless extension candidates. Maximal degree in co-relation 11031. Up to 1246 conditions per place. [2024-06-27 23:53:07,212 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 318 selfloop transitions, 39 changer transitions 0/359 dead transitions. [2024-06-27 23:53:07,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 359 transitions, 5723 flow [2024-06-27 23:53:07,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:53:07,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:53:07,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-27 23:53:07,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3580645161290323 [2024-06-27 23:53:07,213 INFO L175 Difference]: Start difference. First operand has 410 places, 342 transitions, 4882 flow. Second operand 10 states and 111 transitions. [2024-06-27 23:53:07,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 359 transitions, 5723 flow [2024-06-27 23:53:07,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 359 transitions, 5607 flow, removed 44 selfloop flow, removed 4 redundant places. [2024-06-27 23:53:07,926 INFO L231 Difference]: Finished difference. Result has 416 places, 344 transitions, 4943 flow [2024-06-27 23:53:07,926 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4780, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4943, PETRI_PLACES=416, PETRI_TRANSITIONS=344} [2024-06-27 23:53:07,926 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 386 predicate places. [2024-06-27 23:53:07,926 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 344 transitions, 4943 flow [2024-06-27 23:53:07,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:53:07,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:53:07,927 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 23:53:07,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-27 23:53:07,927 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:53:07,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:53:07,927 INFO L85 PathProgramCache]: Analyzing trace with hash 940719539, now seen corresponding path program 11 times [2024-06-27 23:53:07,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:53:07,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380423610] [2024-06-27 23:53:07,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:53:07,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:53:07,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:53:09,207 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 23:53:09,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:53:09,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380423610] [2024-06-27 23:53:09,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380423610] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:53:09,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:53:09,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:53:09,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069196753] [2024-06-27 23:53:09,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:53:09,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:53:09,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:53:09,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:53:09,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:53:09,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:53:09,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 344 transitions, 4943 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:53:09,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:53:09,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:53:09,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:53:09,757 INFO L124 PetriNetUnfolderBase]: 750/1361 cut-off events. [2024-06-27 23:53:09,758 INFO L125 PetriNetUnfolderBase]: For 148947/148947 co-relation queries the response was YES. [2024-06-27 23:53:09,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10998 conditions, 1361 events. 750/1361 cut-off events. For 148947/148947 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 7582 event pairs, 78 based on Foata normal form. 4/1365 useless extension candidates. Maximal degree in co-relation 10833. Up to 1229 conditions per place. [2024-06-27 23:53:09,773 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 320 selfloop transitions, 40 changer transitions 0/362 dead transitions. [2024-06-27 23:53:09,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 362 transitions, 5753 flow [2024-06-27 23:53:09,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:53:09,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:53:09,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-27 23:53:09,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36129032258064514 [2024-06-27 23:53:09,774 INFO L175 Difference]: Start difference. First operand has 416 places, 344 transitions, 4943 flow. Second operand 10 states and 112 transitions. [2024-06-27 23:53:09,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 362 transitions, 5753 flow [2024-06-27 23:53:10,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 362 transitions, 5602 flow, removed 46 selfloop flow, removed 6 redundant places. [2024-06-27 23:53:10,428 INFO L231 Difference]: Finished difference. Result has 421 places, 346 transitions, 4940 flow [2024-06-27 23:53:10,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4792, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4940, PETRI_PLACES=421, PETRI_TRANSITIONS=346} [2024-06-27 23:53:10,428 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 391 predicate places. [2024-06-27 23:53:10,429 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 346 transitions, 4940 flow [2024-06-27 23:53:10,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:53:10,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:53:10,429 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 23:53:10,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-27 23:53:10,429 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:53:10,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:53:10,429 INFO L85 PathProgramCache]: Analyzing trace with hash -666916967, now seen corresponding path program 12 times [2024-06-27 23:53:10,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:53:10,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781869377] [2024-06-27 23:53:10,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:53:10,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:53:10,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:53:11,778 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 23:53:11,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:53:11,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781869377] [2024-06-27 23:53:11,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781869377] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:53:11,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:53:11,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:53:11,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672099165] [2024-06-27 23:53:11,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:53:11,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:53:11,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:53:11,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:53:11,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:53:11,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:53:11,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 346 transitions, 4940 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:53:11,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:53:11,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:53:11,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:53:12,302 INFO L124 PetriNetUnfolderBase]: 754/1369 cut-off events. [2024-06-27 23:53:12,302 INFO L125 PetriNetUnfolderBase]: For 140734/140734 co-relation queries the response was YES. [2024-06-27 23:53:12,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11004 conditions, 1369 events. 754/1369 cut-off events. For 140734/140734 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 7644 event pairs, 80 based on Foata normal form. 2/1371 useless extension candidates. Maximal degree in co-relation 10837. Up to 1244 conditions per place. [2024-06-27 23:53:12,318 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 330 selfloop transitions, 33 changer transitions 0/365 dead transitions. [2024-06-27 23:53:12,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 365 transitions, 5780 flow [2024-06-27 23:53:12,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:53:12,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:53:12,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-27 23:53:12,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36129032258064514 [2024-06-27 23:53:12,322 INFO L175 Difference]: Start difference. First operand has 421 places, 346 transitions, 4940 flow. Second operand 10 states and 112 transitions. [2024-06-27 23:53:12,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 365 transitions, 5780 flow [2024-06-27 23:53:12,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 365 transitions, 5657 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-27 23:53:12,991 INFO L231 Difference]: Finished difference. Result has 423 places, 348 transitions, 4969 flow [2024-06-27 23:53:12,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4817, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4969, PETRI_PLACES=423, PETRI_TRANSITIONS=348} [2024-06-27 23:53:12,991 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 393 predicate places. [2024-06-27 23:53:12,991 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 348 transitions, 4969 flow [2024-06-27 23:53:12,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:53:12,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:53:12,991 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 23:53:12,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-27 23:53:12,991 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:53:12,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:53:12,992 INFO L85 PathProgramCache]: Analyzing trace with hash 125989015, now seen corresponding path program 13 times [2024-06-27 23:53:12,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:53:12,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827045944] [2024-06-27 23:53:12,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:53:12,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:53:13,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:53:14,353 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 23:53:14,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:53:14,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827045944] [2024-06-27 23:53:14,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827045944] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:53:14,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:53:14,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:53:14,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156900044] [2024-06-27 23:53:14,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:53:14,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:53:14,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:53:14,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:53:14,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:53:14,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:53:14,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 348 transitions, 4969 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:53:14,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:53:14,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:53:14,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:53:14,914 INFO L124 PetriNetUnfolderBase]: 758/1377 cut-off events. [2024-06-27 23:53:14,914 INFO L125 PetriNetUnfolderBase]: For 143735/143735 co-relation queries the response was YES. [2024-06-27 23:53:14,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11086 conditions, 1377 events. 758/1377 cut-off events. For 143735/143735 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 7697 event pairs, 88 based on Foata normal form. 2/1379 useless extension candidates. Maximal degree in co-relation 10918. Up to 1188 conditions per place. [2024-06-27 23:53:14,928 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 297 selfloop transitions, 64 changer transitions 0/363 dead transitions. [2024-06-27 23:53:14,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 363 transitions, 5775 flow [2024-06-27 23:53:14,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:53:14,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:53:14,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-27 23:53:14,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-27 23:53:14,929 INFO L175 Difference]: Start difference. First operand has 423 places, 348 transitions, 4969 flow. Second operand 10 states and 115 transitions. [2024-06-27 23:53:14,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 363 transitions, 5775 flow [2024-06-27 23:53:15,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 363 transitions, 5643 flow, removed 37 selfloop flow, removed 6 redundant places. [2024-06-27 23:53:15,606 INFO L231 Difference]: Finished difference. Result has 427 places, 349 transitions, 5021 flow [2024-06-27 23:53:15,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4837, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5021, PETRI_PLACES=427, PETRI_TRANSITIONS=349} [2024-06-27 23:53:15,607 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 397 predicate places. [2024-06-27 23:53:15,607 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 349 transitions, 5021 flow [2024-06-27 23:53:15,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:53:15,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:53:15,607 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 23:53:15,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-27 23:53:15,607 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:53:15,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:53:15,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1536668323, now seen corresponding path program 14 times [2024-06-27 23:53:15,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:53:15,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359593680] [2024-06-27 23:53:15,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:53:15,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:53:15,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:53:16,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:53:16,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:53:16,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359593680] [2024-06-27 23:53:16,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359593680] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:53:16,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:53:16,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:53:16,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43592687] [2024-06-27 23:53:16,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:53:16,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:53:16,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:53:16,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:53:16,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:53:17,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:53:17,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 349 transitions, 5021 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:53:17,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:53:17,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:53:17,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:53:17,447 INFO L124 PetriNetUnfolderBase]: 766/1393 cut-off events. [2024-06-27 23:53:17,448 INFO L125 PetriNetUnfolderBase]: For 146522/146522 co-relation queries the response was YES. [2024-06-27 23:53:17,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11158 conditions, 1393 events. 766/1393 cut-off events. For 146522/146522 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 7815 event pairs, 90 based on Foata normal form. 2/1395 useless extension candidates. Maximal degree in co-relation 10990. Up to 1190 conditions per place. [2024-06-27 23:53:17,464 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 300 selfloop transitions, 64 changer transitions 0/366 dead transitions. [2024-06-27 23:53:17,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 366 transitions, 5841 flow [2024-06-27 23:53:17,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:53:17,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:53:17,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-27 23:53:17,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3741935483870968 [2024-06-27 23:53:17,465 INFO L175 Difference]: Start difference. First operand has 427 places, 349 transitions, 5021 flow. Second operand 10 states and 116 transitions. [2024-06-27 23:53:17,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 366 transitions, 5841 flow [2024-06-27 23:53:18,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 366 transitions, 5667 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-27 23:53:18,104 INFO L231 Difference]: Finished difference. Result has 430 places, 351 transitions, 5043 flow [2024-06-27 23:53:18,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4847, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5043, PETRI_PLACES=430, PETRI_TRANSITIONS=351} [2024-06-27 23:53:18,105 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 400 predicate places. [2024-06-27 23:53:18,105 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 351 transitions, 5043 flow [2024-06-27 23:53:18,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:53:18,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:53:18,105 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 23:53:18,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-27 23:53:18,105 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:53:18,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:53:18,106 INFO L85 PathProgramCache]: Analyzing trace with hash 121400395, now seen corresponding path program 15 times [2024-06-27 23:53:18,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:53:18,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555119571] [2024-06-27 23:53:18,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:53:18,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:53:18,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:53:19,831 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 23:53:19,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:53:19,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555119571] [2024-06-27 23:53:19,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555119571] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:53:19,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:53:19,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:53:19,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005525938] [2024-06-27 23:53:19,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:53:19,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:53:19,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:53:19,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:53:19,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:53:19,910 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:53:19,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 351 transitions, 5043 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:53:19,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:53:19,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:53:19,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:53:20,374 INFO L124 PetriNetUnfolderBase]: 781/1422 cut-off events. [2024-06-27 23:53:20,375 INFO L125 PetriNetUnfolderBase]: For 162117/162117 co-relation queries the response was YES. [2024-06-27 23:53:20,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11654 conditions, 1422 events. 781/1422 cut-off events. For 162117/162117 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 8029 event pairs, 91 based on Foata normal form. 2/1424 useless extension candidates. Maximal degree in co-relation 11484. Up to 1176 conditions per place. [2024-06-27 23:53:20,389 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 305 selfloop transitions, 65 changer transitions 0/372 dead transitions. [2024-06-27 23:53:20,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 372 transitions, 6177 flow [2024-06-27 23:53:20,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:53:20,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:53:20,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-27 23:53:20,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3741935483870968 [2024-06-27 23:53:20,390 INFO L175 Difference]: Start difference. First operand has 430 places, 351 transitions, 5043 flow. Second operand 10 states and 116 transitions. [2024-06-27 23:53:20,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 372 transitions, 6177 flow [2024-06-27 23:53:21,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 372 transitions, 6005 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-27 23:53:21,088 INFO L231 Difference]: Finished difference. Result has 435 places, 355 transitions, 5163 flow [2024-06-27 23:53:21,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4871, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5163, PETRI_PLACES=435, PETRI_TRANSITIONS=355} [2024-06-27 23:53:21,088 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 405 predicate places. [2024-06-27 23:53:21,088 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 355 transitions, 5163 flow [2024-06-27 23:53:21,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:53:21,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:53:21,089 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 23:53:21,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-27 23:53:21,089 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:53:21,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:53:21,090 INFO L85 PathProgramCache]: Analyzing trace with hash 298651885, now seen corresponding path program 16 times [2024-06-27 23:53:21,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:53:21,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38961543] [2024-06-27 23:53:21,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:53:21,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:53:21,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:53:22,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:53:22,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:53:22,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38961543] [2024-06-27 23:53:22,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38961543] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:53:22,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:53:22,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:53:22,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846115452] [2024-06-27 23:53:22,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:53:22,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:53:22,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:53:22,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:53:22,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:53:22,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:53:22,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 355 transitions, 5163 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:53:22,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:53:22,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:53:22,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:53:22,944 INFO L124 PetriNetUnfolderBase]: 785/1430 cut-off events. [2024-06-27 23:53:22,944 INFO L125 PetriNetUnfolderBase]: For 165742/165742 co-relation queries the response was YES. [2024-06-27 23:53:22,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11783 conditions, 1430 events. 785/1430 cut-off events. For 165742/165742 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 8083 event pairs, 95 based on Foata normal form. 2/1432 useless extension candidates. Maximal degree in co-relation 11610. Up to 1241 conditions per place. [2024-06-27 23:53:22,961 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 288 selfloop transitions, 80 changer transitions 0/370 dead transitions. [2024-06-27 23:53:22,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 370 transitions, 5990 flow [2024-06-27 23:53:22,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:53:22,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:53:22,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-27 23:53:22,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36451612903225805 [2024-06-27 23:53:22,962 INFO L175 Difference]: Start difference. First operand has 435 places, 355 transitions, 5163 flow. Second operand 10 states and 113 transitions. [2024-06-27 23:53:22,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 370 transitions, 5990 flow [2024-06-27 23:53:23,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 370 transitions, 5807 flow, removed 55 selfloop flow, removed 5 redundant places. [2024-06-27 23:53:23,733 INFO L231 Difference]: Finished difference. Result has 440 places, 356 transitions, 5203 flow [2024-06-27 23:53:23,734 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4996, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5203, PETRI_PLACES=440, PETRI_TRANSITIONS=356} [2024-06-27 23:53:23,734 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 410 predicate places. [2024-06-27 23:53:23,734 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 356 transitions, 5203 flow [2024-06-27 23:53:23,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:53:23,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:53:23,734 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 23:53:23,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-27 23:53:23,734 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:53:23,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:53:23,735 INFO L85 PathProgramCache]: Analyzing trace with hash 298889221, now seen corresponding path program 3 times [2024-06-27 23:53:23,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:53:23,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263656103] [2024-06-27 23:53:23,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:53:23,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:53:23,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:53:25,031 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 23:53:25,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:53:25,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263656103] [2024-06-27 23:53:25,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263656103] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:53:25,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:53:25,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:53:25,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528440635] [2024-06-27 23:53:25,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:53:25,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:53:25,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:53:25,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:53:25,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:53:25,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:53:25,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 356 transitions, 5203 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:53:25,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:53:25,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:53:25,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:53:25,488 INFO L124 PetriNetUnfolderBase]: 783/1427 cut-off events. [2024-06-27 23:53:25,488 INFO L125 PetriNetUnfolderBase]: For 153419/153419 co-relation queries the response was YES. [2024-06-27 23:53:25,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11583 conditions, 1427 events. 783/1427 cut-off events. For 153419/153419 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 8077 event pairs, 97 based on Foata normal form. 1/1428 useless extension candidates. Maximal degree in co-relation 11408. Up to 1090 conditions per place. [2024-06-27 23:53:25,506 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 235 selfloop transitions, 130 changer transitions 0/367 dead transitions. [2024-06-27 23:53:25,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 367 transitions, 5959 flow [2024-06-27 23:53:25,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:53:25,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:53:25,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-27 23:53:25,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4050179211469534 [2024-06-27 23:53:25,507 INFO L175 Difference]: Start difference. First operand has 440 places, 356 transitions, 5203 flow. Second operand 9 states and 113 transitions. [2024-06-27 23:53:25,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 367 transitions, 5959 flow [2024-06-27 23:53:26,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 367 transitions, 5741 flow, removed 30 selfloop flow, removed 8 redundant places. [2024-06-27 23:53:26,241 INFO L231 Difference]: Finished difference. Result has 441 places, 356 transitions, 5251 flow [2024-06-27 23:53:26,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4985, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5251, PETRI_PLACES=441, PETRI_TRANSITIONS=356} [2024-06-27 23:53:26,242 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 411 predicate places. [2024-06-27 23:53:26,242 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 356 transitions, 5251 flow [2024-06-27 23:53:26,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:53:26,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:53:26,242 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 23:53:26,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-27 23:53:26,242 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:53:26,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:53:26,243 INFO L85 PathProgramCache]: Analyzing trace with hash 969957259, now seen corresponding path program 1 times [2024-06-27 23:53:26,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:53:26,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754668641] [2024-06-27 23:53:26,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:53:26,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:53:26,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:53:27,422 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 23:53:27,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:53:27,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754668641] [2024-06-27 23:53:27,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754668641] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:53:27,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:53:27,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:53:27,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70509005] [2024-06-27 23:53:27,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:53:27,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:53:27,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:53:27,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:53:27,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:53:27,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:53:27,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 356 transitions, 5251 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:53:27,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:53:27,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:53:27,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:53:28,028 INFO L124 PetriNetUnfolderBase]: 803/1471 cut-off events. [2024-06-27 23:53:28,028 INFO L125 PetriNetUnfolderBase]: For 219619/219619 co-relation queries the response was YES. [2024-06-27 23:53:28,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11904 conditions, 1471 events. 803/1471 cut-off events. For 219619/219619 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 8366 event pairs, 100 based on Foata normal form. 12/1483 useless extension candidates. Maximal degree in co-relation 11728. Up to 1187 conditions per place. [2024-06-27 23:53:28,047 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 263 selfloop transitions, 98 changer transitions 12/375 dead transitions. [2024-06-27 23:53:28,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 375 transitions, 6161 flow [2024-06-27 23:53:28,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:53:28,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:53:28,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-27 23:53:28,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4096774193548387 [2024-06-27 23:53:28,048 INFO L175 Difference]: Start difference. First operand has 441 places, 356 transitions, 5251 flow. Second operand 10 states and 127 transitions. [2024-06-27 23:53:28,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 375 transitions, 6161 flow [2024-06-27 23:53:28,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 375 transitions, 5871 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-27 23:53:28,877 INFO L231 Difference]: Finished difference. Result has 441 places, 350 transitions, 5108 flow [2024-06-27 23:53:28,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4961, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5108, PETRI_PLACES=441, PETRI_TRANSITIONS=350} [2024-06-27 23:53:28,877 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 411 predicate places. [2024-06-27 23:53:28,878 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 350 transitions, 5108 flow [2024-06-27 23:53:28,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:53:28,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:53:28,878 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 23:53:28,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-27 23:53:28,878 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:53:28,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:53:28,878 INFO L85 PathProgramCache]: Analyzing trace with hash 298897839, now seen corresponding path program 1 times [2024-06-27 23:53:28,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:53:28,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439628091] [2024-06-27 23:53:28,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:53:28,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:53:28,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:53:30,010 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 23:53:30,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:53:30,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439628091] [2024-06-27 23:53:30,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439628091] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:53:30,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:53:30,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:53:30,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118556265] [2024-06-27 23:53:30,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:53:30,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:53:30,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:53:30,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:53:30,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:53:30,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:53:30,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 350 transitions, 5108 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:53:30,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:53:30,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:53:30,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:53:30,592 INFO L124 PetriNetUnfolderBase]: 775/1423 cut-off events. [2024-06-27 23:53:30,593 INFO L125 PetriNetUnfolderBase]: For 158072/158072 co-relation queries the response was YES. [2024-06-27 23:53:30,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11549 conditions, 1423 events. 775/1423 cut-off events. For 158072/158072 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 8105 event pairs, 100 based on Foata normal form. 2/1425 useless extension candidates. Maximal degree in co-relation 11374. Up to 1197 conditions per place. [2024-06-27 23:53:30,611 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 264 selfloop transitions, 99 changer transitions 0/365 dead transitions. [2024-06-27 23:53:30,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 365 transitions, 5938 flow [2024-06-27 23:53:30,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:53:30,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:53:30,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-27 23:53:30,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3935483870967742 [2024-06-27 23:53:30,612 INFO L175 Difference]: Start difference. First operand has 441 places, 350 transitions, 5108 flow. Second operand 10 states and 122 transitions. [2024-06-27 23:53:30,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 365 transitions, 5938 flow [2024-06-27 23:53:31,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 365 transitions, 5663 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-27 23:53:31,447 INFO L231 Difference]: Finished difference. Result has 442 places, 352 transitions, 5090 flow [2024-06-27 23:53:31,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4835, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5090, PETRI_PLACES=442, PETRI_TRANSITIONS=352} [2024-06-27 23:53:31,447 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 412 predicate places. [2024-06-27 23:53:31,447 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 352 transitions, 5090 flow [2024-06-27 23:53:31,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:53:31,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:53:31,447 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 23:53:31,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-27 23:53:31,447 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:53:31,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:53:31,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1669037353, now seen corresponding path program 17 times [2024-06-27 23:53:31,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:53:31,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965906504] [2024-06-27 23:53:31,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:53:31,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:53:31,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:53:32,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:53:32,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:53:32,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965906504] [2024-06-27 23:53:32,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965906504] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:53:32,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:53:32,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:53:32,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295845514] [2024-06-27 23:53:32,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:53:32,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:53:32,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:53:32,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:53:32,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:53:32,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:53:32,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 352 transitions, 5090 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:53:32,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:53:32,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:53:32,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:53:33,385 INFO L124 PetriNetUnfolderBase]: 779/1431 cut-off events. [2024-06-27 23:53:33,385 INFO L125 PetriNetUnfolderBase]: For 163495/163495 co-relation queries the response was YES. [2024-06-27 23:53:33,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11534 conditions, 1431 events. 779/1431 cut-off events. For 163495/163495 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 8172 event pairs, 98 based on Foata normal form. 2/1433 useless extension candidates. Maximal degree in co-relation 11359. Up to 1219 conditions per place. [2024-06-27 23:53:33,404 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 295 selfloop transitions, 72 changer transitions 0/369 dead transitions. [2024-06-27 23:53:33,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 369 transitions, 6127 flow [2024-06-27 23:53:33,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:53:33,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:53:33,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-27 23:53:33,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-27 23:53:33,405 INFO L175 Difference]: Start difference. First operand has 442 places, 352 transitions, 5090 flow. Second operand 10 states and 115 transitions. [2024-06-27 23:53:33,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 451 places, 369 transitions, 6127 flow [2024-06-27 23:53:34,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 369 transitions, 5888 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-27 23:53:34,166 INFO L231 Difference]: Finished difference. Result has 444 places, 353 transitions, 5042 flow [2024-06-27 23:53:34,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4851, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5042, PETRI_PLACES=444, PETRI_TRANSITIONS=353} [2024-06-27 23:53:34,166 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 414 predicate places. [2024-06-27 23:53:34,167 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 353 transitions, 5042 flow [2024-06-27 23:53:34,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:53:34,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:53:34,167 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 23:53:34,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-27 23:53:34,167 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:53:34,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:53:34,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1669032703, now seen corresponding path program 18 times [2024-06-27 23:53:34,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:53:34,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332376117] [2024-06-27 23:53:34,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:53:34,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:53:34,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:53:35,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:53:35,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:53:35,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332376117] [2024-06-27 23:53:35,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332376117] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:53:35,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:53:35,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:53:35,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810458205] [2024-06-27 23:53:35,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:53:35,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:53:35,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:53:35,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:53:35,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:53:35,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:53:35,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 353 transitions, 5042 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:53:35,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:53:35,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:53:35,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:53:36,197 INFO L124 PetriNetUnfolderBase]: 776/1426 cut-off events. [2024-06-27 23:53:36,197 INFO L125 PetriNetUnfolderBase]: For 154332/154332 co-relation queries the response was YES. [2024-06-27 23:53:36,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11177 conditions, 1426 events. 776/1426 cut-off events. For 154332/154332 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 8145 event pairs, 97 based on Foata normal form. 2/1428 useless extension candidates. Maximal degree in co-relation 11001. Up to 1237 conditions per place. [2024-06-27 23:53:36,211 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 294 selfloop transitions, 71 changer transitions 0/367 dead transitions. [2024-06-27 23:53:36,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 367 transitions, 5806 flow [2024-06-27 23:53:36,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:53:36,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:53:36,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-27 23:53:36,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36774193548387096 [2024-06-27 23:53:36,212 INFO L175 Difference]: Start difference. First operand has 444 places, 353 transitions, 5042 flow. Second operand 10 states and 114 transitions. [2024-06-27 23:53:36,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 367 transitions, 5806 flow [2024-06-27 23:53:36,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 367 transitions, 5586 flow, removed 39 selfloop flow, removed 9 redundant places. [2024-06-27 23:53:36,939 INFO L231 Difference]: Finished difference. Result has 445 places, 353 transitions, 4968 flow [2024-06-27 23:53:36,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4822, PETRI_DIFFERENCE_MINUEND_PLACES=435, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4968, PETRI_PLACES=445, PETRI_TRANSITIONS=353} [2024-06-27 23:53:36,939 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 415 predicate places. [2024-06-27 23:53:36,939 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 353 transitions, 4968 flow [2024-06-27 23:53:36,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:53:36,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:53:36,940 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 23:53:36,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-27 23:53:36,940 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:53:36,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:53:36,940 INFO L85 PathProgramCache]: Analyzing trace with hash 587622617, now seen corresponding path program 19 times [2024-06-27 23:53:36,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:53:36,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39816338] [2024-06-27 23:53:36,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:53:36,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:53:36,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:53:38,180 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 23:53:38,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:53:38,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39816338] [2024-06-27 23:53:38,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39816338] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:53:38,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:53:38,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:53:38,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082149522] [2024-06-27 23:53:38,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:53:38,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:53:38,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:53:38,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:53:38,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:53:38,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:53:38,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 353 transitions, 4968 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:53:38,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:53:38,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:53:38,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:53:38,806 INFO L124 PetriNetUnfolderBase]: 780/1434 cut-off events. [2024-06-27 23:53:38,806 INFO L125 PetriNetUnfolderBase]: For 156334/156334 co-relation queries the response was YES. [2024-06-27 23:53:38,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11155 conditions, 1434 events. 780/1434 cut-off events. For 156334/156334 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 8218 event pairs, 96 based on Foata normal form. 2/1436 useless extension candidates. Maximal degree in co-relation 10980. Up to 1339 conditions per place. [2024-06-27 23:53:38,826 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 342 selfloop transitions, 27 changer transitions 0/371 dead transitions. [2024-06-27 23:53:38,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 371 transitions, 5828 flow [2024-06-27 23:53:38,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:53:38,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:53:38,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 111 transitions. [2024-06-27 23:53:38,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3255131964809384 [2024-06-27 23:53:38,827 INFO L175 Difference]: Start difference. First operand has 445 places, 353 transitions, 4968 flow. Second operand 11 states and 111 transitions. [2024-06-27 23:53:38,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 371 transitions, 5828 flow [2024-06-27 23:53:39,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 447 places, 371 transitions, 5686 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-27 23:53:39,549 INFO L231 Difference]: Finished difference. Result has 449 places, 355 transitions, 4972 flow [2024-06-27 23:53:39,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4826, PETRI_DIFFERENCE_MINUEND_PLACES=437, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4972, PETRI_PLACES=449, PETRI_TRANSITIONS=355} [2024-06-27 23:53:39,550 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 419 predicate places. [2024-06-27 23:53:39,550 INFO L495 AbstractCegarLoop]: Abstraction has has 449 places, 355 transitions, 4972 flow [2024-06-27 23:53:39,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:53:39,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:53:39,551 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 23:53:39,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-27 23:53:39,551 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:53:39,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:53:39,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1964059053, now seen corresponding path program 20 times [2024-06-27 23:53:39,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:53:39,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470621255] [2024-06-27 23:53:39,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:53:39,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:53:39,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:53:40,793 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 23:53:40,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:53:40,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470621255] [2024-06-27 23:53:40,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470621255] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:53:40,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:53:40,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:53:40,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952759607] [2024-06-27 23:53:40,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:53:40,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:53:40,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:53:40,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:53:40,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:53:40,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:53:40,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 355 transitions, 4972 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:53:40,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:53:40,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:53:40,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:53:41,396 INFO L124 PetriNetUnfolderBase]: 795/1463 cut-off events. [2024-06-27 23:53:41,396 INFO L125 PetriNetUnfolderBase]: For 174870/174870 co-relation queries the response was YES. [2024-06-27 23:53:41,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11683 conditions, 1463 events. 795/1463 cut-off events. For 174870/174870 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 8455 event pairs, 99 based on Foata normal form. 2/1465 useless extension candidates. Maximal degree in co-relation 11505. Up to 1343 conditions per place. [2024-06-27 23:53:41,415 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 337 selfloop transitions, 35 changer transitions 0/374 dead transitions. [2024-06-27 23:53:41,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 374 transitions, 6126 flow [2024-06-27 23:53:41,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:53:41,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:53:41,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-27 23:53:41,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3580645161290323 [2024-06-27 23:53:41,417 INFO L175 Difference]: Start difference. First operand has 449 places, 355 transitions, 4972 flow. Second operand 10 states and 111 transitions. [2024-06-27 23:53:41,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 374 transitions, 6126 flow [2024-06-27 23:53:42,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 374 transitions, 5994 flow, removed 39 selfloop flow, removed 9 redundant places. [2024-06-27 23:53:42,258 INFO L231 Difference]: Finished difference. Result has 452 places, 359 transitions, 5073 flow [2024-06-27 23:53:42,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4840, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5073, PETRI_PLACES=452, PETRI_TRANSITIONS=359} [2024-06-27 23:53:42,259 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 422 predicate places. [2024-06-27 23:53:42,259 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 359 transitions, 5073 flow [2024-06-27 23:53:42,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:53:42,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:53:42,259 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 23:53:42,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-27 23:53:42,260 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:53:42,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:53:42,260 INFO L85 PathProgramCache]: Analyzing trace with hash 304412407, now seen corresponding path program 21 times [2024-06-27 23:53:42,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:53:42,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940156989] [2024-06-27 23:53:42,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:53:42,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:53:42,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:53:43,555 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 23:53:43,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:53:43,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940156989] [2024-06-27 23:53:43,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940156989] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:53:43,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:53:43,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:53:43,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527794856] [2024-06-27 23:53:43,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:53:43,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:53:43,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:53:43,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:53:43,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:53:43,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:53:43,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 359 transitions, 5073 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:53:43,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:53:43,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:53:43,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:53:44,147 INFO L124 PetriNetUnfolderBase]: 799/1471 cut-off events. [2024-06-27 23:53:44,147 INFO L125 PetriNetUnfolderBase]: For 178089/178089 co-relation queries the response was YES. [2024-06-27 23:53:44,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11748 conditions, 1471 events. 799/1471 cut-off events. For 178089/178089 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 8517 event pairs, 105 based on Foata normal form. 2/1473 useless extension candidates. Maximal degree in co-relation 11567. Up to 1386 conditions per place. [2024-06-27 23:53:44,166 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 334 selfloop transitions, 36 changer transitions 0/372 dead transitions. [2024-06-27 23:53:44,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 372 transitions, 5902 flow [2024-06-27 23:53:44,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:53:44,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:53:44,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-27 23:53:44,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-27 23:53:44,167 INFO L175 Difference]: Start difference. First operand has 452 places, 359 transitions, 5073 flow. Second operand 10 states and 108 transitions. [2024-06-27 23:53:44,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 372 transitions, 5902 flow [2024-06-27 23:53:44,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 372 transitions, 5743 flow, removed 57 selfloop flow, removed 5 redundant places. [2024-06-27 23:53:44,961 INFO L231 Difference]: Finished difference. Result has 457 places, 360 transitions, 5051 flow [2024-06-27 23:53:44,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4930, PETRI_DIFFERENCE_MINUEND_PLACES=447, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5051, PETRI_PLACES=457, PETRI_TRANSITIONS=360} [2024-06-27 23:53:44,962 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 427 predicate places. [2024-06-27 23:53:44,962 INFO L495 AbstractCegarLoop]: Abstraction has has 457 places, 360 transitions, 5051 flow [2024-06-27 23:53:44,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:53:44,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:53:44,962 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 23:53:44,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-27 23:53:44,962 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:53:44,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:53:44,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1963943733, now seen corresponding path program 22 times [2024-06-27 23:53:44,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:53:44,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196415189] [2024-06-27 23:53:44,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:53:44,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:53:44,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:53:46,276 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 23:53:46,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:53:46,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196415189] [2024-06-27 23:53:46,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196415189] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:53:46,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:53:46,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:53:46,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605637553] [2024-06-27 23:53:46,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:53:46,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:53:46,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:53:46,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:53:46,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:53:46,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:53:46,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 360 transitions, 5051 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:53:46,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:53:46,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:53:46,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:53:46,855 INFO L124 PetriNetUnfolderBase]: 796/1466 cut-off events. [2024-06-27 23:53:46,855 INFO L125 PetriNetUnfolderBase]: For 163995/163995 co-relation queries the response was YES. [2024-06-27 23:53:46,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11309 conditions, 1466 events. 796/1466 cut-off events. For 163995/163995 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 8480 event pairs, 106 based on Foata normal form. 2/1468 useless extension candidates. Maximal degree in co-relation 11126. Up to 1367 conditions per place. [2024-06-27 23:53:46,875 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 335 selfloop transitions, 36 changer transitions 0/373 dead transitions. [2024-06-27 23:53:46,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 466 places, 373 transitions, 5825 flow [2024-06-27 23:53:46,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:53:46,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:53:46,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-27 23:53:46,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-27 23:53:46,877 INFO L175 Difference]: Start difference. First operand has 457 places, 360 transitions, 5051 flow. Second operand 10 states and 109 transitions. [2024-06-27 23:53:46,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 466 places, 373 transitions, 5825 flow [2024-06-27 23:53:47,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 458 places, 373 transitions, 5651 flow, removed 38 selfloop flow, removed 8 redundant places. [2024-06-27 23:53:47,613 INFO L231 Difference]: Finished difference. Result has 459 places, 360 transitions, 4953 flow [2024-06-27 23:53:47,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4877, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4953, PETRI_PLACES=459, PETRI_TRANSITIONS=360} [2024-06-27 23:53:47,614 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 429 predicate places. [2024-06-27 23:53:47,614 INFO L495 AbstractCegarLoop]: Abstraction has has 459 places, 360 transitions, 4953 flow [2024-06-27 23:53:47,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:53:47,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:53:47,614 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 23:53:47,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-27 23:53:47,614 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:53:47,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:53:47,615 INFO L85 PathProgramCache]: Analyzing trace with hash 353902727, now seen corresponding path program 23 times [2024-06-27 23:53:47,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:53:47,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480448167] [2024-06-27 23:53:47,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:53:47,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:53:47,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:53:49,046 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 23:53:49,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:53:49,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480448167] [2024-06-27 23:53:49,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480448167] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:53:49,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:53:49,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:53:49,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403110149] [2024-06-27 23:53:49,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:53:49,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:53:49,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:53:49,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:53:49,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:53:49,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:53:49,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 360 transitions, 4953 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:53:49,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:53:49,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:53:49,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:53:49,604 INFO L124 PetriNetUnfolderBase]: 811/1495 cut-off events. [2024-06-27 23:53:49,604 INFO L125 PetriNetUnfolderBase]: For 181924/181924 co-relation queries the response was YES. [2024-06-27 23:53:49,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11754 conditions, 1495 events. 811/1495 cut-off events. For 181924/181924 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 8692 event pairs, 105 based on Foata normal form. 2/1497 useless extension candidates. Maximal degree in co-relation 11570. Up to 1371 conditions per place. [2024-06-27 23:53:49,624 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 344 selfloop transitions, 33 changer transitions 0/379 dead transitions. [2024-06-27 23:53:49,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 379 transitions, 6129 flow [2024-06-27 23:53:49,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:53:49,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:53:49,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-27 23:53:49,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3580645161290323 [2024-06-27 23:53:49,625 INFO L175 Difference]: Start difference. First operand has 459 places, 360 transitions, 4953 flow. Second operand 10 states and 111 transitions. [2024-06-27 23:53:49,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 379 transitions, 6129 flow [2024-06-27 23:53:50,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 379 transitions, 6057 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-27 23:53:50,407 INFO L231 Difference]: Finished difference. Result has 463 places, 364 transitions, 5116 flow [2024-06-27 23:53:50,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4881, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5116, PETRI_PLACES=463, PETRI_TRANSITIONS=364} [2024-06-27 23:53:50,408 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 433 predicate places. [2024-06-27 23:53:50,408 INFO L495 AbstractCegarLoop]: Abstraction has has 463 places, 364 transitions, 5116 flow [2024-06-27 23:53:50,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:53:50,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:53:50,408 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 23:53:50,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-27 23:53:50,409 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:53:50,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:53:50,409 INFO L85 PathProgramCache]: Analyzing trace with hash 727975677, now seen corresponding path program 24 times [2024-06-27 23:53:50,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:53:50,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261415832] [2024-06-27 23:53:50,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:53:50,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:53:50,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:53:51,820 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 23:53:51,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:53:51,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261415832] [2024-06-27 23:53:51,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261415832] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:53:51,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:53:51,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:53:51,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196504067] [2024-06-27 23:53:51,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:53:51,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:53:51,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:53:51,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:53:51,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:53:51,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:53:51,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 463 places, 364 transitions, 5116 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:53:51,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:53:51,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:53:51,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:53:52,536 INFO L124 PetriNetUnfolderBase]: 815/1503 cut-off events. [2024-06-27 23:53:52,536 INFO L125 PetriNetUnfolderBase]: For 186885/186885 co-relation queries the response was YES. [2024-06-27 23:53:52,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11946 conditions, 1503 events. 815/1503 cut-off events. For 186885/186885 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 8783 event pairs, 111 based on Foata normal form. 2/1505 useless extension candidates. Maximal degree in co-relation 11760. Up to 1414 conditions per place. [2024-06-27 23:53:52,556 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 341 selfloop transitions, 34 changer transitions 0/377 dead transitions. [2024-06-27 23:53:52,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 472 places, 377 transitions, 5957 flow [2024-06-27 23:53:52,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:53:52,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:53:52,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-27 23:53:52,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-27 23:53:52,557 INFO L175 Difference]: Start difference. First operand has 463 places, 364 transitions, 5116 flow. Second operand 10 states and 108 transitions. [2024-06-27 23:53:52,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 472 places, 377 transitions, 5957 flow [2024-06-27 23:53:53,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 377 transitions, 5803 flow, removed 61 selfloop flow, removed 4 redundant places. [2024-06-27 23:53:53,347 INFO L231 Difference]: Finished difference. Result has 469 places, 365 transitions, 5097 flow [2024-06-27 23:53:53,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4980, PETRI_DIFFERENCE_MINUEND_PLACES=459, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5097, PETRI_PLACES=469, PETRI_TRANSITIONS=365} [2024-06-27 23:53:53,348 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 439 predicate places. [2024-06-27 23:53:53,348 INFO L495 AbstractCegarLoop]: Abstraction has has 469 places, 365 transitions, 5097 flow [2024-06-27 23:53:53,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:53:53,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:53:53,348 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 23:53:53,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-27 23:53:53,348 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:53:53,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:53:53,348 INFO L85 PathProgramCache]: Analyzing trace with hash -145769653, now seen corresponding path program 25 times [2024-06-27 23:53:53,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:53:53,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804580556] [2024-06-27 23:53:53,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:53:53,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:53:53,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:53:54,742 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 23:53:54,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:53:54,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804580556] [2024-06-27 23:53:54,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804580556] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:53:54,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:53:54,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:53:54,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932959663] [2024-06-27 23:53:54,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:53:54,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:53:54,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:53:54,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:53:54,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:53:54,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:53:54,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 469 places, 365 transitions, 5097 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:53:54,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:53:54,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:53:54,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:53:55,394 INFO L124 PetriNetUnfolderBase]: 812/1498 cut-off events. [2024-06-27 23:53:55,394 INFO L125 PetriNetUnfolderBase]: For 172031/172031 co-relation queries the response was YES. [2024-06-27 23:53:55,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11483 conditions, 1498 events. 812/1498 cut-off events. For 172031/172031 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 8760 event pairs, 108 based on Foata normal form. 2/1500 useless extension candidates. Maximal degree in co-relation 11295. Up to 1395 conditions per place. [2024-06-27 23:53:55,411 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 342 selfloop transitions, 34 changer transitions 0/378 dead transitions. [2024-06-27 23:53:55,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 378 transitions, 5881 flow [2024-06-27 23:53:55,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:53:55,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:53:55,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-27 23:53:55,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-27 23:53:55,412 INFO L175 Difference]: Start difference. First operand has 469 places, 365 transitions, 5097 flow. Second operand 10 states and 109 transitions. [2024-06-27 23:53:55,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 378 transitions, 5881 flow [2024-06-27 23:53:56,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 378 transitions, 5719 flow, removed 38 selfloop flow, removed 10 redundant places. [2024-06-27 23:53:56,228 INFO L231 Difference]: Finished difference. Result has 469 places, 365 transitions, 5007 flow [2024-06-27 23:53:56,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4935, PETRI_DIFFERENCE_MINUEND_PLACES=459, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5007, PETRI_PLACES=469, PETRI_TRANSITIONS=365} [2024-06-27 23:53:56,228 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 439 predicate places. [2024-06-27 23:53:56,229 INFO L495 AbstractCegarLoop]: Abstraction has has 469 places, 365 transitions, 5007 flow [2024-06-27 23:53:56,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:53:56,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:53:56,229 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 23:53:56,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-27 23:53:56,229 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:53:56,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:53:56,229 INFO L85 PathProgramCache]: Analyzing trace with hash 26303221, now seen corresponding path program 26 times [2024-06-27 23:53:56,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:53:56,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069634242] [2024-06-27 23:53:56,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:53:56,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:53:56,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:53:57,621 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 23:53:57,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:53:57,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069634242] [2024-06-27 23:53:57,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069634242] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:53:57,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:53:57,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:53:57,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580130675] [2024-06-27 23:53:57,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:53:57,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:53:57,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:53:57,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:53:57,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:53:57,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:53:57,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 469 places, 365 transitions, 5007 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:53:57,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:53:57,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:53:57,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:53:58,184 INFO L124 PetriNetUnfolderBase]: 816/1506 cut-off events. [2024-06-27 23:53:58,184 INFO L125 PetriNetUnfolderBase]: For 174586/174586 co-relation queries the response was YES. [2024-06-27 23:53:58,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11485 conditions, 1506 events. 816/1506 cut-off events. For 174586/174586 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 8800 event pairs, 112 based on Foata normal form. 2/1508 useless extension candidates. Maximal degree in co-relation 11296. Up to 1357 conditions per place. [2024-06-27 23:53:58,205 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 315 selfloop transitions, 60 changer transitions 0/377 dead transitions. [2024-06-27 23:53:58,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 479 places, 377 transitions, 5843 flow [2024-06-27 23:53:58,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:53:58,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:53:58,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-27 23:53:58,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34310850439882695 [2024-06-27 23:53:58,206 INFO L175 Difference]: Start difference. First operand has 469 places, 365 transitions, 5007 flow. Second operand 11 states and 117 transitions. [2024-06-27 23:53:58,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 479 places, 377 transitions, 5843 flow [2024-06-27 23:53:59,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 471 places, 377 transitions, 5775 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-27 23:53:59,061 INFO L231 Difference]: Finished difference. Result has 472 places, 366 transitions, 5125 flow [2024-06-27 23:53:59,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4939, PETRI_DIFFERENCE_MINUEND_PLACES=461, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5125, PETRI_PLACES=472, PETRI_TRANSITIONS=366} [2024-06-27 23:53:59,061 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 442 predicate places. [2024-06-27 23:53:59,061 INFO L495 AbstractCegarLoop]: Abstraction has has 472 places, 366 transitions, 5125 flow [2024-06-27 23:53:59,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:53:59,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:53:59,061 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 23:53:59,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-27 23:53:59,061 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:53:59,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:53:59,062 INFO L85 PathProgramCache]: Analyzing trace with hash 19869481, now seen corresponding path program 27 times [2024-06-27 23:53:59,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:53:59,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273427056] [2024-06-27 23:53:59,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:53:59,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:53:59,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:54:00,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:54:00,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:54:00,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273427056] [2024-06-27 23:54:00,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273427056] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:54:00,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:54:00,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:54:00,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733013451] [2024-06-27 23:54:00,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:54:00,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:54:00,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:54:00,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:54:00,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:54:00,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:54:00,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 472 places, 366 transitions, 5125 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:54:00,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:54:00,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:54:00,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:54:01,141 INFO L124 PetriNetUnfolderBase]: 831/1535 cut-off events. [2024-06-27 23:54:01,142 INFO L125 PetriNetUnfolderBase]: For 196004/196004 co-relation queries the response was YES. [2024-06-27 23:54:01,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12162 conditions, 1535 events. 831/1535 cut-off events. For 196004/196004 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 9012 event pairs, 111 based on Foata normal form. 2/1537 useless extension candidates. Maximal degree in co-relation 11973. Up to 1363 conditions per place. [2024-06-27 23:54:01,161 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 324 selfloop transitions, 56 changer transitions 0/382 dead transitions. [2024-06-27 23:54:01,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 481 places, 382 transitions, 6285 flow [2024-06-27 23:54:01,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:54:01,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:54:01,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-27 23:54:01,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36774193548387096 [2024-06-27 23:54:01,162 INFO L175 Difference]: Start difference. First operand has 472 places, 366 transitions, 5125 flow. Second operand 10 states and 114 transitions. [2024-06-27 23:54:01,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 481 places, 382 transitions, 6285 flow [2024-06-27 23:54:02,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 472 places, 382 transitions, 6109 flow, removed 29 selfloop flow, removed 9 redundant places. [2024-06-27 23:54:02,145 INFO L231 Difference]: Finished difference. Result has 474 places, 369 transitions, 5203 flow [2024-06-27 23:54:02,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4949, PETRI_DIFFERENCE_MINUEND_PLACES=463, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5203, PETRI_PLACES=474, PETRI_TRANSITIONS=369} [2024-06-27 23:54:02,145 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 444 predicate places. [2024-06-27 23:54:02,146 INFO L495 AbstractCegarLoop]: Abstraction has has 474 places, 369 transitions, 5203 flow [2024-06-27 23:54:02,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:54:02,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:54:02,146 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 23:54:02,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-27 23:54:02,146 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:54:02,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:54:02,147 INFO L85 PathProgramCache]: Analyzing trace with hash 20047111, now seen corresponding path program 28 times [2024-06-27 23:54:02,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:54:02,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288689556] [2024-06-27 23:54:02,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:54:02,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:54:02,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:54:03,551 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 23:54:03,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:54:03,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288689556] [2024-06-27 23:54:03,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288689556] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:54:03,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:54:03,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:54:03,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522615492] [2024-06-27 23:54:03,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:54:03,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:54:03,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:54:03,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:54:03,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:54:03,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:54:03,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 474 places, 369 transitions, 5203 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:54:03,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:54:03,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:54:03,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:54:04,161 INFO L124 PetriNetUnfolderBase]: 828/1530 cut-off events. [2024-06-27 23:54:04,161 INFO L125 PetriNetUnfolderBase]: For 182732/182732 co-relation queries the response was YES. [2024-06-27 23:54:04,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11783 conditions, 1530 events. 828/1530 cut-off events. For 182732/182732 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 8959 event pairs, 112 based on Foata normal form. 2/1532 useless extension candidates. Maximal degree in co-relation 11592. Up to 1381 conditions per place. [2024-06-27 23:54:04,181 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 323 selfloop transitions, 55 changer transitions 0/380 dead transitions. [2024-06-27 23:54:04,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 484 places, 380 transitions, 5985 flow [2024-06-27 23:54:04,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:54:04,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:54:04,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-27 23:54:04,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3460410557184751 [2024-06-27 23:54:04,182 INFO L175 Difference]: Start difference. First operand has 474 places, 369 transitions, 5203 flow. Second operand 11 states and 118 transitions. [2024-06-27 23:54:04,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 484 places, 380 transitions, 5985 flow [2024-06-27 23:54:05,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 380 transitions, 5798 flow, removed 59 selfloop flow, removed 6 redundant places. [2024-06-27 23:54:05,088 INFO L231 Difference]: Finished difference. Result has 479 places, 369 transitions, 5130 flow [2024-06-27 23:54:05,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5016, PETRI_DIFFERENCE_MINUEND_PLACES=468, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5130, PETRI_PLACES=479, PETRI_TRANSITIONS=369} [2024-06-27 23:54:05,089 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 449 predicate places. [2024-06-27 23:54:05,089 INFO L495 AbstractCegarLoop]: Abstraction has has 479 places, 369 transitions, 5130 flow [2024-06-27 23:54:05,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:54:05,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:54:05,089 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 23:54:05,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-27 23:54:05,090 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:54:05,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:54:05,090 INFO L85 PathProgramCache]: Analyzing trace with hash -146186669, now seen corresponding path program 29 times [2024-06-27 23:54:05,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:54:05,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598890544] [2024-06-27 23:54:05,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:54:05,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:54:05,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:54:06,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:54:06,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:54:06,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598890544] [2024-06-27 23:54:06,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598890544] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:54:06,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:54:06,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:54:06,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535561645] [2024-06-27 23:54:06,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:54:06,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:54:06,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:54:06,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:54:06,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:54:06,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:54:06,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 369 transitions, 5130 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:54:06,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:54:06,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:54:06,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:54:07,169 INFO L124 PetriNetUnfolderBase]: 832/1538 cut-off events. [2024-06-27 23:54:07,170 INFO L125 PetriNetUnfolderBase]: For 183614/183614 co-relation queries the response was YES. [2024-06-27 23:54:07,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11794 conditions, 1538 events. 832/1538 cut-off events. For 183614/183614 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 9065 event pairs, 114 based on Foata normal form. 2/1540 useless extension candidates. Maximal degree in co-relation 11601. Up to 1389 conditions per place. [2024-06-27 23:54:07,192 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 327 selfloop transitions, 52 changer transitions 0/381 dead transitions. [2024-06-27 23:54:07,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 489 places, 381 transitions, 5978 flow [2024-06-27 23:54:07,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:54:07,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:54:07,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-27 23:54:07,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489736070381232 [2024-06-27 23:54:07,193 INFO L175 Difference]: Start difference. First operand has 479 places, 369 transitions, 5130 flow. Second operand 11 states and 119 transitions. [2024-06-27 23:54:07,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 489 places, 381 transitions, 5978 flow [2024-06-27 23:54:08,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 480 places, 381 transitions, 5868 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-27 23:54:08,092 INFO L231 Difference]: Finished difference. Result has 481 places, 370 transitions, 5194 flow [2024-06-27 23:54:08,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5020, PETRI_DIFFERENCE_MINUEND_PLACES=470, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5194, PETRI_PLACES=481, PETRI_TRANSITIONS=370} [2024-06-27 23:54:08,093 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 451 predicate places. [2024-06-27 23:54:08,093 INFO L495 AbstractCegarLoop]: Abstraction has has 481 places, 370 transitions, 5194 flow [2024-06-27 23:54:08,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:54:08,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:54:08,093 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 23:54:08,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-27 23:54:08,093 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:54:08,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:54:08,093 INFO L85 PathProgramCache]: Analyzing trace with hash -146364299, now seen corresponding path program 30 times [2024-06-27 23:54:08,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:54:08,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456484483] [2024-06-27 23:54:08,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:54:08,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:54:08,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:54:09,565 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 23:54:09,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:54:09,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456484483] [2024-06-27 23:54:09,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456484483] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:54:09,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:54:09,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:54:09,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145255364] [2024-06-27 23:54:09,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:54:09,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:54:09,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:54:09,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:54:09,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:54:09,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:54:09,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 481 places, 370 transitions, 5194 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:54:09,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:54:09,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:54:09,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:54:10,213 INFO L124 PetriNetUnfolderBase]: 840/1554 cut-off events. [2024-06-27 23:54:10,213 INFO L125 PetriNetUnfolderBase]: For 188401/188401 co-relation queries the response was YES. [2024-06-27 23:54:10,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11986 conditions, 1554 events. 840/1554 cut-off events. For 188401/188401 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 9173 event pairs, 116 based on Foata normal form. 2/1556 useless extension candidates. Maximal degree in co-relation 11792. Up to 1391 conditions per place. [2024-06-27 23:54:10,234 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 330 selfloop transitions, 52 changer transitions 0/384 dead transitions. [2024-06-27 23:54:10,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 490 places, 384 transitions, 6058 flow [2024-06-27 23:54:10,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:54:10,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:54:10,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-27 23:54:10,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-27 23:54:10,235 INFO L175 Difference]: Start difference. First operand has 481 places, 370 transitions, 5194 flow. Second operand 10 states and 115 transitions. [2024-06-27 23:54:10,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 490 places, 384 transitions, 6058 flow [2024-06-27 23:54:11,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 481 places, 384 transitions, 5894 flow, removed 31 selfloop flow, removed 9 redundant places. [2024-06-27 23:54:11,078 INFO L231 Difference]: Finished difference. Result has 483 places, 372 transitions, 5218 flow [2024-06-27 23:54:11,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5030, PETRI_DIFFERENCE_MINUEND_PLACES=472, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5218, PETRI_PLACES=483, PETRI_TRANSITIONS=372} [2024-06-27 23:54:11,078 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 453 predicate places. [2024-06-27 23:54:11,078 INFO L495 AbstractCegarLoop]: Abstraction has has 483 places, 372 transitions, 5218 flow [2024-06-27 23:54:11,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:54:11,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:54:11,079 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 23:54:11,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-27 23:54:11,079 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:54:11,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:54:11,079 INFO L85 PathProgramCache]: Analyzing trace with hash -150948269, now seen corresponding path program 31 times [2024-06-27 23:54:11,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:54:11,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003931712] [2024-06-27 23:54:11,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:54:11,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:54:11,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:54:12,557 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 23:54:12,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:54:12,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003931712] [2024-06-27 23:54:12,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003931712] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:54:12,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:54:12,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:54:12,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393061422] [2024-06-27 23:54:12,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:54:12,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:54:12,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:54:12,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:54:12,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:54:12,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:54:12,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 483 places, 372 transitions, 5218 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:54:12,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:54:12,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:54:12,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:54:13,089 INFO L124 PetriNetUnfolderBase]: 844/1562 cut-off events. [2024-06-27 23:54:13,089 INFO L125 PetriNetUnfolderBase]: For 191847/191847 co-relation queries the response was YES. [2024-06-27 23:54:13,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12061 conditions, 1562 events. 844/1562 cut-off events. For 191847/191847 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 9244 event pairs, 114 based on Foata normal form. 2/1564 useless extension candidates. Maximal degree in co-relation 11865. Up to 1351 conditions per place. [2024-06-27 23:54:13,110 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 330 selfloop transitions, 55 changer transitions 0/387 dead transitions. [2024-06-27 23:54:13,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 492 places, 387 transitions, 6120 flow [2024-06-27 23:54:13,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:54:13,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:54:13,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-27 23:54:13,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36774193548387096 [2024-06-27 23:54:13,111 INFO L175 Difference]: Start difference. First operand has 483 places, 372 transitions, 5218 flow. Second operand 10 states and 114 transitions. [2024-06-27 23:54:13,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 492 places, 387 transitions, 6120 flow [2024-06-27 23:54:13,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 485 places, 387 transitions, 5956 flow, removed 33 selfloop flow, removed 7 redundant places. [2024-06-27 23:54:13,987 INFO L231 Difference]: Finished difference. Result has 487 places, 374 transitions, 5286 flow [2024-06-27 23:54:13,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5054, PETRI_DIFFERENCE_MINUEND_PLACES=476, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5286, PETRI_PLACES=487, PETRI_TRANSITIONS=374} [2024-06-27 23:54:13,988 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 457 predicate places. [2024-06-27 23:54:13,988 INFO L495 AbstractCegarLoop]: Abstraction has has 487 places, 374 transitions, 5286 flow [2024-06-27 23:54:13,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:54:13,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:54:13,988 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 23:54:13,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-27 23:54:13,988 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:54:13,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:54:13,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1912101815, now seen corresponding path program 2 times [2024-06-27 23:54:13,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:54:13,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168998603] [2024-06-27 23:54:13,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:54:13,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:54:14,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:54:15,480 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 23:54:15,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:54:15,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168998603] [2024-06-27 23:54:15,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168998603] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:54:15,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:54:15,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:54:15,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577975459] [2024-06-27 23:54:15,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:54:15,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:54:15,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:54:15,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:54:15,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:54:15,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:54:15,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 487 places, 374 transitions, 5286 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:54:15,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:54:15,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:54:15,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:54:16,135 INFO L124 PetriNetUnfolderBase]: 860/1588 cut-off events. [2024-06-27 23:54:16,135 INFO L125 PetriNetUnfolderBase]: For 207035/207035 co-relation queries the response was YES. [2024-06-27 23:54:16,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12533 conditions, 1588 events. 860/1588 cut-off events. For 207035/207035 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 9405 event pairs, 294 based on Foata normal form. 2/1590 useless extension candidates. Maximal degree in co-relation 12335. Up to 1524 conditions per place. [2024-06-27 23:54:16,156 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 362 selfloop transitions, 28 changer transitions 0/392 dead transitions. [2024-06-27 23:54:16,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 498 places, 392 transitions, 6500 flow [2024-06-27 23:54:16,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:54:16,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:54:16,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 118 transitions. [2024-06-27 23:54:16,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3172043010752688 [2024-06-27 23:54:16,157 INFO L175 Difference]: Start difference. First operand has 487 places, 374 transitions, 5286 flow. Second operand 12 states and 118 transitions. [2024-06-27 23:54:16,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 498 places, 392 transitions, 6500 flow [2024-06-27 23:54:17,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 490 places, 392 transitions, 6294 flow, removed 51 selfloop flow, removed 8 redundant places. [2024-06-27 23:54:17,211 INFO L231 Difference]: Finished difference. Result has 491 places, 378 transitions, 5249 flow [2024-06-27 23:54:17,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5080, PETRI_DIFFERENCE_MINUEND_PLACES=479, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5249, PETRI_PLACES=491, PETRI_TRANSITIONS=378} [2024-06-27 23:54:17,211 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 461 predicate places. [2024-06-27 23:54:17,211 INFO L495 AbstractCegarLoop]: Abstraction has has 491 places, 378 transitions, 5249 flow [2024-06-27 23:54:17,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:54:17,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:54:17,212 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 23:54:17,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-27 23:54:17,212 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:54:17,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:54:17,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1912102125, now seen corresponding path program 2 times [2024-06-27 23:54:17,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:54:17,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010559233] [2024-06-27 23:54:17,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:54:17,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:54:17,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:54:18,754 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 23:54:18,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:54:18,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010559233] [2024-06-27 23:54:18,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010559233] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:54:18,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:54:18,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:54:18,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187506033] [2024-06-27 23:54:18,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:54:18,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:54:18,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:54:18,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:54:18,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:54:18,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:54:18,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 491 places, 378 transitions, 5249 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:54:18,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:54:18,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:54:18,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:54:19,522 INFO L124 PetriNetUnfolderBase]: 864/1596 cut-off events. [2024-06-27 23:54:19,522 INFO L125 PetriNetUnfolderBase]: For 208884/208884 co-relation queries the response was YES. [2024-06-27 23:54:19,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12398 conditions, 1596 events. 864/1596 cut-off events. For 208884/208884 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 9465 event pairs, 294 based on Foata normal form. 2/1598 useless extension candidates. Maximal degree in co-relation 12201. Up to 1541 conditions per place. [2024-06-27 23:54:19,542 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 365 selfloop transitions, 26 changer transitions 0/393 dead transitions. [2024-06-27 23:54:19,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 503 places, 393 transitions, 6371 flow [2024-06-27 23:54:19,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 23:54:19,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 23:54:19,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 122 transitions. [2024-06-27 23:54:19,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3027295285359802 [2024-06-27 23:54:19,543 INFO L175 Difference]: Start difference. First operand has 491 places, 378 transitions, 5249 flow. Second operand 13 states and 122 transitions. [2024-06-27 23:54:19,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 503 places, 393 transitions, 6371 flow [2024-06-27 23:54:20,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 495 places, 393 transitions, 6290 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-27 23:54:20,650 INFO L231 Difference]: Finished difference. Result has 496 places, 379 transitions, 5258 flow [2024-06-27 23:54:20,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5168, PETRI_DIFFERENCE_MINUEND_PLACES=483, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5258, PETRI_PLACES=496, PETRI_TRANSITIONS=379} [2024-06-27 23:54:20,650 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 466 predicate places. [2024-06-27 23:54:20,650 INFO L495 AbstractCegarLoop]: Abstraction has has 496 places, 379 transitions, 5258 flow [2024-06-27 23:54:20,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:54:20,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:54:20,651 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 23:54:20,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-27 23:54:20,651 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:54:20,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:54:20,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1698281981, now seen corresponding path program 3 times [2024-06-27 23:54:20,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:54:20,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643720239] [2024-06-27 23:54:20,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:54:20,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:54:20,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:54:21,762 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 23:54:21,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:54:21,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643720239] [2024-06-27 23:54:21,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643720239] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:54:21,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:54:21,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:54:21,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247575552] [2024-06-27 23:54:21,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:54:21,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:54:21,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:54:21,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:54:21,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:54:21,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:54:21,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 496 places, 379 transitions, 5258 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states 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 23:54:21,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:54:21,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:54:21,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:54:22,347 INFO L124 PetriNetUnfolderBase]: 900/1673 cut-off events. [2024-06-27 23:54:22,348 INFO L125 PetriNetUnfolderBase]: For 316646/316646 co-relation queries the response was YES. [2024-06-27 23:54:22,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13279 conditions, 1673 events. 900/1673 cut-off events. For 316646/316646 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 9970 event pairs, 131 based on Foata normal form. 13/1686 useless extension candidates. Maximal degree in co-relation 13081. Up to 1079 conditions per place. [2024-06-27 23:54:22,372 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 250 selfloop transitions, 149 changer transitions 5/407 dead transitions. [2024-06-27 23:54:22,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 505 places, 407 transitions, 7210 flow [2024-06-27 23:54:22,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:54:22,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:54:22,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 145 transitions. [2024-06-27 23:54:22,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46774193548387094 [2024-06-27 23:54:22,373 INFO L175 Difference]: Start difference. First operand has 496 places, 379 transitions, 5258 flow. Second operand 10 states and 145 transitions. [2024-06-27 23:54:22,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 505 places, 407 transitions, 7210 flow [2024-06-27 23:54:23,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 494 places, 407 transitions, 7130 flow, removed 15 selfloop flow, removed 11 redundant places. [2024-06-27 23:54:23,535 INFO L231 Difference]: Finished difference. Result has 496 places, 386 transitions, 5756 flow [2024-06-27 23:54:23,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5178, PETRI_DIFFERENCE_MINUEND_PLACES=485, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5756, PETRI_PLACES=496, PETRI_TRANSITIONS=386} [2024-06-27 23:54:23,536 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 466 predicate places. [2024-06-27 23:54:23,536 INFO L495 AbstractCegarLoop]: Abstraction has has 496 places, 386 transitions, 5756 flow [2024-06-27 23:54:23,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states 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 23:54:23,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:54:23,536 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 23:54:23,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-27 23:54:23,536 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:54:23,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:54:23,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1927939897, now seen corresponding path program 3 times [2024-06-27 23:54:23,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:54:23,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320288921] [2024-06-27 23:54:23,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:54:23,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:54:23,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:54:24,784 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 23:54:24,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:54:24,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320288921] [2024-06-27 23:54:24,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320288921] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:54:24,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:54:24,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:54:24,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937074160] [2024-06-27 23:54:24,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:54:24,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:54:24,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:54:24,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:54:24,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:54:24,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:54:24,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 496 places, 386 transitions, 5756 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:54:24,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:54:24,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:54:24,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:54:25,314 INFO L124 PetriNetUnfolderBase]: 892/1661 cut-off events. [2024-06-27 23:54:25,314 INFO L125 PetriNetUnfolderBase]: For 238025/238025 co-relation queries the response was YES. [2024-06-27 23:54:25,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13569 conditions, 1661 events. 892/1661 cut-off events. For 238025/238025 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 9878 event pairs, 131 based on Foata normal form. 2/1663 useless extension candidates. Maximal degree in co-relation 13369. Up to 1321 conditions per place. [2024-06-27 23:54:25,337 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 293 selfloop transitions, 105 changer transitions 0/400 dead transitions. [2024-06-27 23:54:25,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 505 places, 400 transitions, 6684 flow [2024-06-27 23:54:25,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:54:25,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:54:25,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-27 23:54:25,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4096774193548387 [2024-06-27 23:54:25,338 INFO L175 Difference]: Start difference. First operand has 496 places, 386 transitions, 5756 flow. Second operand 10 states and 127 transitions. [2024-06-27 23:54:25,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 505 places, 400 transitions, 6684 flow [2024-06-27 23:54:26,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 502 places, 400 transitions, 6457 flow, removed 54 selfloop flow, removed 3 redundant places. [2024-06-27 23:54:26,448 INFO L231 Difference]: Finished difference. Result has 503 places, 388 transitions, 5806 flow [2024-06-27 23:54:26,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5531, PETRI_DIFFERENCE_MINUEND_PLACES=493, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5806, PETRI_PLACES=503, PETRI_TRANSITIONS=388} [2024-06-27 23:54:26,449 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 473 predicate places. [2024-06-27 23:54:26,449 INFO L495 AbstractCegarLoop]: Abstraction has has 503 places, 388 transitions, 5806 flow [2024-06-27 23:54:26,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:54:26,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:54:26,449 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 23:54:26,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-27 23:54:26,449 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:54:26,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:54:26,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1958512611, now seen corresponding path program 4 times [2024-06-27 23:54:26,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:54:26,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607648754] [2024-06-27 23:54:26,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:54:26,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:54:26,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:54:27,733 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 23:54:27,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:54:27,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607648754] [2024-06-27 23:54:27,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607648754] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:54:27,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:54:27,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:54:27,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798589886] [2024-06-27 23:54:27,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:54:27,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:54:27,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:54:27,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:54:27,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:54:27,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:54:27,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 503 places, 388 transitions, 5806 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states 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 23:54:27,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:54:27,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:54:27,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:54:28,344 INFO L124 PetriNetUnfolderBase]: 905/1682 cut-off events. [2024-06-27 23:54:28,344 INFO L125 PetriNetUnfolderBase]: For 249612/249612 co-relation queries the response was YES. [2024-06-27 23:54:28,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14080 conditions, 1682 events. 905/1682 cut-off events. For 249612/249612 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 9993 event pairs, 131 based on Foata normal form. 1/1683 useless extension candidates. Maximal degree in co-relation 13879. Up to 1162 conditions per place. [2024-06-27 23:54:28,368 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 278 selfloop transitions, 126 changer transitions 0/407 dead transitions. [2024-06-27 23:54:28,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 511 places, 407 transitions, 7852 flow [2024-06-27 23:54:28,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:54:28,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:54:28,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 132 transitions. [2024-06-27 23:54:28,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4731182795698925 [2024-06-27 23:54:28,369 INFO L175 Difference]: Start difference. First operand has 503 places, 388 transitions, 5806 flow. Second operand 9 states and 132 transitions. [2024-06-27 23:54:28,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 511 places, 407 transitions, 7852 flow [2024-06-27 23:54:29,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 503 places, 407 transitions, 7593 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-27 23:54:29,651 INFO L231 Difference]: Finished difference. Result has 504 places, 394 transitions, 5968 flow [2024-06-27 23:54:29,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5547, PETRI_DIFFERENCE_MINUEND_PLACES=495, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5968, PETRI_PLACES=504, PETRI_TRANSITIONS=394} [2024-06-27 23:54:29,652 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 474 predicate places. [2024-06-27 23:54:29,652 INFO L495 AbstractCegarLoop]: Abstraction has has 504 places, 394 transitions, 5968 flow [2024-06-27 23:54:29,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states 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 23:54:29,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:54:29,652 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 23:54:29,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-27 23:54:29,652 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:54:29,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:54:29,653 INFO L85 PathProgramCache]: Analyzing trace with hash -2105317185, now seen corresponding path program 5 times [2024-06-27 23:54:29,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:54:29,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048614577] [2024-06-27 23:54:29,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:54:29,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:54:29,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:54:31,122 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 23:54:31,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:54:31,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048614577] [2024-06-27 23:54:31,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048614577] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:54:31,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:54:31,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:54:31,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909705501] [2024-06-27 23:54:31,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:54:31,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:54:31,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:54:31,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:54:31,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:54:31,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:54:31,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 394 transitions, 5968 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:54:31,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:54:31,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:54:31,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:54:31,770 INFO L124 PetriNetUnfolderBase]: 908/1687 cut-off events. [2024-06-27 23:54:31,770 INFO L125 PetriNetUnfolderBase]: For 253721/253721 co-relation queries the response was YES. [2024-06-27 23:54:31,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14153 conditions, 1687 events. 908/1687 cut-off events. For 253721/253721 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 10050 event pairs, 133 based on Foata normal form. 1/1688 useless extension candidates. Maximal degree in co-relation 13950. Up to 1166 conditions per place. [2024-06-27 23:54:31,795 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 286 selfloop transitions, 118 changer transitions 0/406 dead transitions. [2024-06-27 23:54:31,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 512 places, 406 transitions, 7120 flow [2024-06-27 23:54:31,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:54:31,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:54:31,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-27 23:54:31,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4265232974910394 [2024-06-27 23:54:31,796 INFO L175 Difference]: Start difference. First operand has 504 places, 394 transitions, 5968 flow. Second operand 9 states and 119 transitions. [2024-06-27 23:54:31,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 512 places, 406 transitions, 7120 flow [2024-06-27 23:54:33,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 507 places, 406 transitions, 6896 flow, removed 31 selfloop flow, removed 5 redundant places. [2024-06-27 23:54:33,131 INFO L231 Difference]: Finished difference. Result has 508 places, 396 transitions, 6047 flow [2024-06-27 23:54:33,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5748, PETRI_DIFFERENCE_MINUEND_PLACES=499, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6047, PETRI_PLACES=508, PETRI_TRANSITIONS=396} [2024-06-27 23:54:33,131 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 478 predicate places. [2024-06-27 23:54:33,131 INFO L495 AbstractCegarLoop]: Abstraction has has 508 places, 396 transitions, 6047 flow [2024-06-27 23:54:33,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:54:33,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:54:33,131 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 23:54:33,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-27 23:54:33,132 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:54:33,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:54:33,132 INFO L85 PathProgramCache]: Analyzing trace with hash 2108246219, now seen corresponding path program 32 times [2024-06-27 23:54:33,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:54:33,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665483910] [2024-06-27 23:54:33,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:54:33,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:54:33,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:54:34,714 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 23:54:34,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:54:34,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665483910] [2024-06-27 23:54:34,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665483910] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:54:34,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:54:34,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:54:34,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656084558] [2024-06-27 23:54:34,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:54:34,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:54:34,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:54:34,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:54:34,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:54:34,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:54:34,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 508 places, 396 transitions, 6047 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:54:34,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:54:34,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:54:34,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:54:35,448 INFO L124 PetriNetUnfolderBase]: 923/1716 cut-off events. [2024-06-27 23:54:35,448 INFO L125 PetriNetUnfolderBase]: For 284482/284482 co-relation queries the response was YES. [2024-06-27 23:54:35,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14790 conditions, 1716 events. 923/1716 cut-off events. For 284482/284482 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 10267 event pairs, 136 based on Foata normal form. 2/1718 useless extension candidates. Maximal degree in co-relation 14587. Up to 1333 conditions per place. [2024-06-27 23:54:35,472 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 291 selfloop transitions, 118 changer transitions 0/411 dead transitions. [2024-06-27 23:54:35,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 518 places, 411 transitions, 7299 flow [2024-06-27 23:54:35,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:54:35,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:54:35,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-27 23:54:35,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-27 23:54:35,473 INFO L175 Difference]: Start difference. First operand has 508 places, 396 transitions, 6047 flow. Second operand 11 states and 121 transitions. [2024-06-27 23:54:35,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 518 places, 411 transitions, 7299 flow [2024-06-27 23:54:36,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 510 places, 411 transitions, 6992 flow, removed 30 selfloop flow, removed 8 redundant places. [2024-06-27 23:54:36,771 INFO L231 Difference]: Finished difference. Result has 512 places, 399 transitions, 6134 flow [2024-06-27 23:54:36,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5742, PETRI_DIFFERENCE_MINUEND_PLACES=500, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6134, PETRI_PLACES=512, PETRI_TRANSITIONS=399} [2024-06-27 23:54:36,772 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 482 predicate places. [2024-06-27 23:54:36,772 INFO L495 AbstractCegarLoop]: Abstraction has has 512 places, 399 transitions, 6134 flow [2024-06-27 23:54:36,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:54:36,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:54:36,772 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 23:54:36,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-27 23:54:36,772 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:54:36,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:54:36,773 INFO L85 PathProgramCache]: Analyzing trace with hash 2108250869, now seen corresponding path program 33 times [2024-06-27 23:54:36,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:54:36,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944807048] [2024-06-27 23:54:36,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:54:36,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:54:36,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:54:38,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:54:38,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:54:38,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944807048] [2024-06-27 23:54:38,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944807048] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:54:38,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:54:38,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:54:38,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519410171] [2024-06-27 23:54:38,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:54:38,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:54:38,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:54:38,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:54:38,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:54:38,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:54:38,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 512 places, 399 transitions, 6134 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:54:38,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:54:38,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:54:38,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:54:39,195 INFO L124 PetriNetUnfolderBase]: 920/1711 cut-off events. [2024-06-27 23:54:39,195 INFO L125 PetriNetUnfolderBase]: For 267227/267227 co-relation queries the response was YES. [2024-06-27 23:54:39,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14313 conditions, 1711 events. 920/1711 cut-off events. For 267227/267227 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 10273 event pairs, 133 based on Foata normal form. 2/1713 useless extension candidates. Maximal degree in co-relation 14109. Up to 1345 conditions per place. [2024-06-27 23:54:39,220 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 289 selfloop transitions, 118 changer transitions 0/409 dead transitions. [2024-06-27 23:54:39,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 522 places, 409 transitions, 6970 flow [2024-06-27 23:54:39,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:54:39,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:54:39,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-27 23:54:39,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489736070381232 [2024-06-27 23:54:39,221 INFO L175 Difference]: Start difference. First operand has 512 places, 399 transitions, 6134 flow. Second operand 11 states and 119 transitions. [2024-06-27 23:54:39,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 522 places, 409 transitions, 6970 flow [2024-06-27 23:54:40,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 515 places, 409 transitions, 6693 flow, removed 68 selfloop flow, removed 7 redundant places. [2024-06-27 23:54:40,507 INFO L231 Difference]: Finished difference. Result has 516 places, 399 transitions, 6097 flow [2024-06-27 23:54:40,507 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5857, PETRI_DIFFERENCE_MINUEND_PLACES=505, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6097, PETRI_PLACES=516, PETRI_TRANSITIONS=399} [2024-06-27 23:54:40,507 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 486 predicate places. [2024-06-27 23:54:40,507 INFO L495 AbstractCegarLoop]: Abstraction has has 516 places, 399 transitions, 6097 flow [2024-06-27 23:54:40,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:54:40,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:54:40,507 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 23:54:40,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-27 23:54:40,508 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:54:40,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:54:40,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1901982795, now seen corresponding path program 4 times [2024-06-27 23:54:40,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:54:40,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635525841] [2024-06-27 23:54:40,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:54:40,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:54:40,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:54:42,092 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 23:54:42,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:54:42,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635525841] [2024-06-27 23:54:42,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635525841] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:54:42,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:54:42,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:54:42,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761879635] [2024-06-27 23:54:42,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:54:42,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:54:42,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:54:42,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:54:42,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:54:42,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:54:42,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 516 places, 399 transitions, 6097 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:54:42,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:54:42,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:54:42,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:54:42,858 INFO L124 PetriNetUnfolderBase]: 936/1749 cut-off events. [2024-06-27 23:54:42,858 INFO L125 PetriNetUnfolderBase]: For 349031/349031 co-relation queries the response was YES. [2024-06-27 23:54:42,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14254 conditions, 1749 events. 936/1749 cut-off events. For 349031/349031 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 10552 event pairs, 307 based on Foata normal form. 14/1763 useless extension candidates. Maximal degree in co-relation 14048. Up to 1661 conditions per place. [2024-06-27 23:54:42,883 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 387 selfloop transitions, 19 changer transitions 8/416 dead transitions. [2024-06-27 23:54:42,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 526 places, 416 transitions, 7099 flow [2024-06-27 23:54:42,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:54:42,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:54:42,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 112 transitions. [2024-06-27 23:54:42,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3284457478005865 [2024-06-27 23:54:42,884 INFO L175 Difference]: Start difference. First operand has 516 places, 399 transitions, 6097 flow. Second operand 11 states and 112 transitions. [2024-06-27 23:54:42,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 526 places, 416 transitions, 7099 flow [2024-06-27 23:54:44,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 517 places, 416 transitions, 6831 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-27 23:54:44,136 INFO L231 Difference]: Finished difference. Result has 519 places, 397 transitions, 5885 flow [2024-06-27 23:54:44,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5829, PETRI_DIFFERENCE_MINUEND_PLACES=507, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5885, PETRI_PLACES=519, PETRI_TRANSITIONS=397} [2024-06-27 23:54:44,137 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 489 predicate places. [2024-06-27 23:54:44,137 INFO L495 AbstractCegarLoop]: Abstraction has has 519 places, 397 transitions, 5885 flow [2024-06-27 23:54:44,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:54:44,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:54:44,137 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 23:54:44,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-27 23:54:44,137 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:54:44,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:54:44,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1983381541, now seen corresponding path program 4 times [2024-06-27 23:54:44,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:54:44,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411825541] [2024-06-27 23:54:44,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:54:44,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:54:44,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:54:45,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:54:45,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:54:45,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411825541] [2024-06-27 23:54:45,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411825541] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:54:45,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:54:45,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:54:45,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058428549] [2024-06-27 23:54:45,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:54:45,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:54:45,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:54:45,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:54:45,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:54:45,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:54:45,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 519 places, 397 transitions, 5885 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:54:45,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:54:45,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:54:45,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:54:46,083 INFO L124 PetriNetUnfolderBase]: 910/1698 cut-off events. [2024-06-27 23:54:46,083 INFO L125 PetriNetUnfolderBase]: For 236753/236753 co-relation queries the response was YES. [2024-06-27 23:54:46,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13605 conditions, 1698 events. 910/1698 cut-off events. For 236753/236753 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 10228 event pairs, 302 based on Foata normal form. 1/1699 useless extension candidates. Maximal degree in co-relation 13397. Up to 1657 conditions per place. [2024-06-27 23:54:46,107 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 386 selfloop transitions, 22 changer transitions 0/410 dead transitions. [2024-06-27 23:54:46,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 529 places, 410 transitions, 7039 flow [2024-06-27 23:54:46,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:54:46,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:54:46,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 107 transitions. [2024-06-27 23:54:46,108 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31378299120234604 [2024-06-27 23:54:46,108 INFO L175 Difference]: Start difference. First operand has 519 places, 397 transitions, 5885 flow. Second operand 11 states and 107 transitions. [2024-06-27 23:54:46,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 529 places, 410 transitions, 7039 flow [2024-06-27 23:54:47,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 517 places, 410 transitions, 6948 flow, removed 20 selfloop flow, removed 12 redundant places. [2024-06-27 23:54:47,324 INFO L231 Difference]: Finished difference. Result has 518 places, 399 transitions, 5891 flow [2024-06-27 23:54:47,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5796, PETRI_DIFFERENCE_MINUEND_PLACES=507, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5891, PETRI_PLACES=518, PETRI_TRANSITIONS=399} [2024-06-27 23:54:47,325 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 488 predicate places. [2024-06-27 23:54:47,325 INFO L495 AbstractCegarLoop]: Abstraction has has 518 places, 399 transitions, 5891 flow [2024-06-27 23:54:47,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:54:47,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:54:47,325 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 23:54:47,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-27 23:54:47,325 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:54:47,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:54:47,325 INFO L85 PathProgramCache]: Analyzing trace with hash 553608227, now seen corresponding path program 6 times [2024-06-27 23:54:47,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:54:47,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712423242] [2024-06-27 23:54:47,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:54:47,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:54:47,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:54:48,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:54:48,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:54:48,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712423242] [2024-06-27 23:54:48,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712423242] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:54:48,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:54:48,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:54:48,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864698466] [2024-06-27 23:54:48,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:54:48,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:54:48,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:54:48,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:54:48,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:54:48,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:54:48,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 518 places, 399 transitions, 5891 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:54:48,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:54:48,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:54:48,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:54:49,404 INFO L124 PetriNetUnfolderBase]: 908/1695 cut-off events. [2024-06-27 23:54:49,405 INFO L125 PetriNetUnfolderBase]: For 227395/227395 co-relation queries the response was YES. [2024-06-27 23:54:49,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13385 conditions, 1695 events. 908/1695 cut-off events. For 227395/227395 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 10211 event pairs, 300 based on Foata normal form. 1/1696 useless extension candidates. Maximal degree in co-relation 13178. Up to 1661 conditions per place. [2024-06-27 23:54:49,431 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 388 selfloop transitions, 18 changer transitions 0/408 dead transitions. [2024-06-27 23:54:49,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 527 places, 408 transitions, 6723 flow [2024-06-27 23:54:49,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:54:49,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:54:49,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 97 transitions. [2024-06-27 23:54:49,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31290322580645163 [2024-06-27 23:54:49,432 INFO L175 Difference]: Start difference. First operand has 518 places, 399 transitions, 5891 flow. Second operand 10 states and 97 transitions. [2024-06-27 23:54:49,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 527 places, 408 transitions, 6723 flow [2024-06-27 23:54:50,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 518 places, 408 transitions, 6608 flow, removed 36 selfloop flow, removed 9 redundant places. [2024-06-27 23:54:50,615 INFO L231 Difference]: Finished difference. Result has 519 places, 399 transitions, 5817 flow [2024-06-27 23:54:50,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5776, PETRI_DIFFERENCE_MINUEND_PLACES=509, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5817, PETRI_PLACES=519, PETRI_TRANSITIONS=399} [2024-06-27 23:54:50,616 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 489 predicate places. [2024-06-27 23:54:50,616 INFO L495 AbstractCegarLoop]: Abstraction has has 519 places, 399 transitions, 5817 flow [2024-06-27 23:54:50,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:54:50,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:54:50,616 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 23:54:50,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-27 23:54:50,616 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:54:50,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:54:50,617 INFO L85 PathProgramCache]: Analyzing trace with hash -2039674517, now seen corresponding path program 7 times [2024-06-27 23:54:50,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:54:50,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740520942] [2024-06-27 23:54:50,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:54:50,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:54:50,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:54:51,898 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 23:54:51,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:54:51,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740520942] [2024-06-27 23:54:51,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740520942] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:54:51,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:54:51,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:54:51,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162430326] [2024-06-27 23:54:51,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:54:51,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:54:51,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:54:51,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:54:51,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:54:51,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:54:51,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 519 places, 399 transitions, 5817 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:54:51,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:54:51,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:54:51,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:54:52,587 INFO L124 PetriNetUnfolderBase]: 906/1692 cut-off events. [2024-06-27 23:54:52,587 INFO L125 PetriNetUnfolderBase]: For 222939/222939 co-relation queries the response was YES. [2024-06-27 23:54:52,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13170 conditions, 1692 events. 906/1692 cut-off events. For 222939/222939 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 10190 event pairs, 133 based on Foata normal form. 1/1693 useless extension candidates. Maximal degree in co-relation 12962. Up to 1173 conditions per place. [2024-06-27 23:54:52,610 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 279 selfloop transitions, 130 changer transitions 0/411 dead transitions. [2024-06-27 23:54:52,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 528 places, 411 transitions, 7477 flow [2024-06-27 23:54:52,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:54:52,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:54:52,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-27 23:54:52,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4129032258064516 [2024-06-27 23:54:52,611 INFO L175 Difference]: Start difference. First operand has 519 places, 399 transitions, 5817 flow. Second operand 10 states and 128 transitions. [2024-06-27 23:54:52,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 528 places, 411 transitions, 7477 flow [2024-06-27 23:54:53,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 518 places, 411 transitions, 7389 flow, removed 22 selfloop flow, removed 10 redundant places. [2024-06-27 23:54:53,803 INFO L231 Difference]: Finished difference. Result has 519 places, 399 transitions, 6001 flow [2024-06-27 23:54:53,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5735, PETRI_DIFFERENCE_MINUEND_PLACES=509, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6001, PETRI_PLACES=519, PETRI_TRANSITIONS=399} [2024-06-27 23:54:53,803 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 489 predicate places. [2024-06-27 23:54:53,803 INFO L495 AbstractCegarLoop]: Abstraction has has 519 places, 399 transitions, 6001 flow [2024-06-27 23:54:53,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:54:53,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:54:53,803 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 23:54:53,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-27 23:54:53,803 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:54:53,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:54:53,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1912458315, now seen corresponding path program 5 times [2024-06-27 23:54:53,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:54:53,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870533020] [2024-06-27 23:54:53,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:54:53,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:54:53,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:54:55,201 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 23:54:55,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:54:55,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870533020] [2024-06-27 23:54:55,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870533020] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:54:55,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:54:55,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:54:55,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043132342] [2024-06-27 23:54:55,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:54:55,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:54:55,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:54:55,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:54:55,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:54:55,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:54:55,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 519 places, 399 transitions, 6001 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:54:55,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:54:55,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:54:55,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:54:56,011 INFO L124 PetriNetUnfolderBase]: 910/1700 cut-off events. [2024-06-27 23:54:56,012 INFO L125 PetriNetUnfolderBase]: For 232311/232311 co-relation queries the response was YES. [2024-06-27 23:54:56,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13458 conditions, 1700 events. 910/1700 cut-off events. For 232311/232311 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 10242 event pairs, 300 based on Foata normal form. 2/1702 useless extension candidates. Maximal degree in co-relation 13250. Up to 1634 conditions per place. [2024-06-27 23:54:56,034 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 386 selfloop transitions, 25 changer transitions 0/413 dead transitions. [2024-06-27 23:54:56,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 531 places, 413 transitions, 6889 flow [2024-06-27 23:54:56,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 23:54:56,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 23:54:56,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 119 transitions. [2024-06-27 23:54:56,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29528535980148884 [2024-06-27 23:54:56,035 INFO L175 Difference]: Start difference. First operand has 519 places, 399 transitions, 6001 flow. Second operand 13 states and 119 transitions. [2024-06-27 23:54:56,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 531 places, 413 transitions, 6889 flow [2024-06-27 23:54:57,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 522 places, 413 transitions, 6629 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-27 23:54:57,228 INFO L231 Difference]: Finished difference. Result has 523 places, 400 transitions, 5835 flow [2024-06-27 23:54:57,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5741, PETRI_DIFFERENCE_MINUEND_PLACES=510, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5835, PETRI_PLACES=523, PETRI_TRANSITIONS=400} [2024-06-27 23:54:57,228 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 493 predicate places. [2024-06-27 23:54:57,228 INFO L495 AbstractCegarLoop]: Abstraction has has 523 places, 400 transitions, 5835 flow [2024-06-27 23:54:57,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:54:57,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:54:57,229 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 23:54:57,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-27 23:54:57,229 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:54:57,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:54:57,229 INFO L85 PathProgramCache]: Analyzing trace with hash -2064209463, now seen corresponding path program 8 times [2024-06-27 23:54:57,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:54:57,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123116517] [2024-06-27 23:54:57,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:54:57,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:54:57,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:54:58,540 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 23:54:58,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:54:58,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123116517] [2024-06-27 23:54:58,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123116517] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:54:58,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:54:58,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:54:58,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937238476] [2024-06-27 23:54:58,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:54:58,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:54:58,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:54:58,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:54:58,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:54:58,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:54:58,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 523 places, 400 transitions, 5835 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:54:58,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:54:58,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:54:58,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:54:59,104 INFO L124 PetriNetUnfolderBase]: 913/1706 cut-off events. [2024-06-27 23:54:59,104 INFO L125 PetriNetUnfolderBase]: For 223886/223886 co-relation queries the response was YES. [2024-06-27 23:54:59,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13306 conditions, 1706 events. 913/1706 cut-off events. For 223886/223886 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 10297 event pairs, 133 based on Foata normal form. 1/1707 useless extension candidates. Maximal degree in co-relation 13098. Up to 1185 conditions per place. [2024-06-27 23:54:59,129 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 257 selfloop transitions, 153 changer transitions 1/413 dead transitions. [2024-06-27 23:54:59,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 531 places, 413 transitions, 7272 flow [2024-06-27 23:54:59,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:54:59,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:54:59,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-27 23:54:59,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43010752688172044 [2024-06-27 23:54:59,130 INFO L175 Difference]: Start difference. First operand has 523 places, 400 transitions, 5835 flow. Second operand 9 states and 120 transitions. [2024-06-27 23:54:59,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 531 places, 413 transitions, 7272 flow [2024-06-27 23:55:00,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 520 places, 413 transitions, 7188 flow, removed 18 selfloop flow, removed 11 redundant places. [2024-06-27 23:55:00,375 INFO L231 Difference]: Finished difference. Result has 521 places, 401 transitions, 6094 flow [2024-06-27 23:55:00,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5751, PETRI_DIFFERENCE_MINUEND_PLACES=512, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6094, PETRI_PLACES=521, PETRI_TRANSITIONS=401} [2024-06-27 23:55:00,375 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 491 predicate places. [2024-06-27 23:55:00,375 INFO L495 AbstractCegarLoop]: Abstraction has has 521 places, 401 transitions, 6094 flow [2024-06-27 23:55:00,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:55:00,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:55:00,376 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 23:55:00,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-27 23:55:00,376 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:55:00,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:55:00,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1958266533, now seen corresponding path program 6 times [2024-06-27 23:55:00,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:55:00,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385400148] [2024-06-27 23:55:00,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:55:00,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:55:00,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:55:01,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:55:01,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:55:01,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385400148] [2024-06-27 23:55:01,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385400148] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:55:01,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:55:01,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:55:01,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477494831] [2024-06-27 23:55:01,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:55:01,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:55:01,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:55:01,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:55:01,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:55:01,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:55:01,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 521 places, 401 transitions, 6094 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states 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 23:55:01,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:55:01,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:55:01,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:55:02,098 INFO L124 PetriNetUnfolderBase]: 937/1764 cut-off events. [2024-06-27 23:55:02,098 INFO L125 PetriNetUnfolderBase]: For 337538/337538 co-relation queries the response was YES. [2024-06-27 23:55:02,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14008 conditions, 1764 events. 937/1764 cut-off events. For 337538/337538 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 10689 event pairs, 139 based on Foata normal form. 13/1777 useless extension candidates. Maximal degree in co-relation 13801. Up to 1159 conditions per place. [2024-06-27 23:55:02,125 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 283 selfloop transitions, 129 changer transitions 8/423 dead transitions. [2024-06-27 23:55:02,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 530 places, 423 transitions, 8004 flow [2024-06-27 23:55:02,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:55:02,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:55:02,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 146 transitions. [2024-06-27 23:55:02,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47096774193548385 [2024-06-27 23:55:02,126 INFO L175 Difference]: Start difference. First operand has 521 places, 401 transitions, 6094 flow. Second operand 10 states and 146 transitions. [2024-06-27 23:55:02,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 530 places, 423 transitions, 8004 flow [2024-06-27 23:55:03,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 522 places, 423 transitions, 7662 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-27 23:55:03,423 INFO L231 Difference]: Finished difference. Result has 524 places, 398 transitions, 6078 flow [2024-06-27 23:55:03,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5758, PETRI_DIFFERENCE_MINUEND_PLACES=513, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6078, PETRI_PLACES=524, PETRI_TRANSITIONS=398} [2024-06-27 23:55:03,423 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 494 predicate places. [2024-06-27 23:55:03,423 INFO L495 AbstractCegarLoop]: Abstraction has has 524 places, 398 transitions, 6078 flow [2024-06-27 23:55:03,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states 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 23:55:03,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:55:03,423 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 23:55:03,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-27 23:55:03,424 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:55:03,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:55:03,424 INFO L85 PathProgramCache]: Analyzing trace with hash -2039665899, now seen corresponding path program 5 times [2024-06-27 23:55:03,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:55:03,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193718998] [2024-06-27 23:55:03,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:55:03,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:55:03,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:55:04,679 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 23:55:04,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:55:04,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193718998] [2024-06-27 23:55:04,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193718998] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:55:04,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:55:04,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:55:04,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446473613] [2024-06-27 23:55:04,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:55:04,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:55:04,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:55:04,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:55:04,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:55:04,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:55:04,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 524 places, 398 transitions, 6078 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:55:04,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:55:04,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:55:04,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:55:05,313 INFO L124 PetriNetUnfolderBase]: 923/1746 cut-off events. [2024-06-27 23:55:05,313 INFO L125 PetriNetUnfolderBase]: For 240946/240946 co-relation queries the response was YES. [2024-06-27 23:55:05,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13971 conditions, 1746 events. 923/1746 cut-off events. For 240946/240946 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 10637 event pairs, 139 based on Foata normal form. 2/1748 useless extension candidates. Maximal degree in co-relation 13762. Up to 1418 conditions per place. [2024-06-27 23:55:05,340 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 300 selfloop transitions, 109 changer transitions 0/411 dead transitions. [2024-06-27 23:55:05,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 533 places, 411 transitions, 7010 flow [2024-06-27 23:55:05,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:55:05,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:55:05,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-27 23:55:05,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-27 23:55:05,341 INFO L175 Difference]: Start difference. First operand has 524 places, 398 transitions, 6078 flow. Second operand 10 states and 125 transitions. [2024-06-27 23:55:05,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 533 places, 411 transitions, 7010 flow [2024-06-27 23:55:06,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 527 places, 411 transitions, 6756 flow, removed 40 selfloop flow, removed 6 redundant places. [2024-06-27 23:55:06,571 INFO L231 Difference]: Finished difference. Result has 528 places, 400 transitions, 6115 flow [2024-06-27 23:55:06,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5824, PETRI_DIFFERENCE_MINUEND_PLACES=518, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6115, PETRI_PLACES=528, PETRI_TRANSITIONS=400} [2024-06-27 23:55:06,572 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 498 predicate places. [2024-06-27 23:55:06,572 INFO L495 AbstractCegarLoop]: Abstraction has has 528 places, 400 transitions, 6115 flow [2024-06-27 23:55:06,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:55:06,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:55:06,572 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 23:55:06,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-27 23:55:06,572 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:55:06,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:55:06,573 INFO L85 PathProgramCache]: Analyzing trace with hash -2039911853, now seen corresponding path program 34 times [2024-06-27 23:55:06,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:55:06,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480705252] [2024-06-27 23:55:06,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:55:06,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:55:06,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:55:08,018 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 23:55:08,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:55:08,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480705252] [2024-06-27 23:55:08,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480705252] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:55:08,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:55:08,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:55:08,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220326419] [2024-06-27 23:55:08,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:55:08,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:55:08,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:55:08,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:55:08,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:55:08,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:55:08,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 528 places, 400 transitions, 6115 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:55:08,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:55:08,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:55:08,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:55:08,722 INFO L124 PetriNetUnfolderBase]: 927/1754 cut-off events. [2024-06-27 23:55:08,723 INFO L125 PetriNetUnfolderBase]: For 246957/246957 co-relation queries the response was YES. [2024-06-27 23:55:08,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14070 conditions, 1754 events. 927/1754 cut-off events. For 246957/246957 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 10686 event pairs, 139 based on Foata normal form. 2/1756 useless extension candidates. Maximal degree in co-relation 13860. Up to 1388 conditions per place. [2024-06-27 23:55:08,749 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 278 selfloop transitions, 131 changer transitions 0/411 dead transitions. [2024-06-27 23:55:08,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 538 places, 411 transitions, 7027 flow [2024-06-27 23:55:08,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:55:08,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:55:08,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-27 23:55:08,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3519061583577713 [2024-06-27 23:55:08,753 INFO L175 Difference]: Start difference. First operand has 528 places, 400 transitions, 6115 flow. Second operand 11 states and 120 transitions. [2024-06-27 23:55:08,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 538 places, 411 transitions, 7027 flow [2024-06-27 23:55:10,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 530 places, 411 transitions, 6752 flow, removed 30 selfloop flow, removed 8 redundant places. [2024-06-27 23:55:10,098 INFO L231 Difference]: Finished difference. Result has 531 places, 401 transitions, 6180 flow [2024-06-27 23:55:10,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5840, PETRI_DIFFERENCE_MINUEND_PLACES=520, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6180, PETRI_PLACES=531, PETRI_TRANSITIONS=401} [2024-06-27 23:55:10,099 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 501 predicate places. [2024-06-27 23:55:10,099 INFO L495 AbstractCegarLoop]: Abstraction has has 531 places, 401 transitions, 6180 flow [2024-06-27 23:55:10,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:55:10,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:55:10,099 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 23:55:10,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-27 23:55:10,099 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:55:10,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:55:10,100 INFO L85 PathProgramCache]: Analyzing trace with hash -2064200845, now seen corresponding path program 6 times [2024-06-27 23:55:10,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:55:10,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595717846] [2024-06-27 23:55:10,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:55:10,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:55:10,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:55:11,487 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 23:55:11,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:55:11,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595717846] [2024-06-27 23:55:11,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595717846] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:55:11,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:55:11,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:55:11,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328399008] [2024-06-27 23:55:11,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:55:11,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:55:11,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:55:11,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:55:11,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:55:11,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:55:11,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 531 places, 401 transitions, 6180 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:55:11,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:55:11,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:55:11,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:55:12,185 INFO L124 PetriNetUnfolderBase]: 937/1771 cut-off events. [2024-06-27 23:55:12,185 INFO L125 PetriNetUnfolderBase]: For 250223/250223 co-relation queries the response was YES. [2024-06-27 23:55:12,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14209 conditions, 1771 events. 937/1771 cut-off events. For 250223/250223 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 10801 event pairs, 139 based on Foata normal form. 2/1773 useless extension candidates. Maximal degree in co-relation 13997. Up to 1432 conditions per place. [2024-06-27 23:55:12,210 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 289 selfloop transitions, 129 changer transitions 0/420 dead transitions. [2024-06-27 23:55:12,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 541 places, 420 transitions, 7481 flow [2024-06-27 23:55:12,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:55:12,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:55:12,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-27 23:55:12,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2024-06-27 23:55:12,211 INFO L175 Difference]: Start difference. First operand has 531 places, 401 transitions, 6180 flow. Second operand 11 states and 136 transitions. [2024-06-27 23:55:12,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 541 places, 420 transitions, 7481 flow [2024-06-27 23:55:13,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 532 places, 420 transitions, 7151 flow, removed 35 selfloop flow, removed 9 redundant places. [2024-06-27 23:55:13,602 INFO L231 Difference]: Finished difference. Result has 534 places, 406 transitions, 6249 flow [2024-06-27 23:55:13,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5850, PETRI_DIFFERENCE_MINUEND_PLACES=522, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6249, PETRI_PLACES=534, PETRI_TRANSITIONS=406} [2024-06-27 23:55:13,603 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 504 predicate places. [2024-06-27 23:55:13,603 INFO L495 AbstractCegarLoop]: Abstraction has has 534 places, 406 transitions, 6249 flow [2024-06-27 23:55:13,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:55:13,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:55:13,603 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 23:55:13,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-27 23:55:13,603 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:55:13,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:55:13,604 INFO L85 PathProgramCache]: Analyzing trace with hash -2015840831, now seen corresponding path program 9 times [2024-06-27 23:55:13,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:55:13,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007620352] [2024-06-27 23:55:13,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:55:13,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:55:13,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:55:14,895 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 23:55:14,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:55:14,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007620352] [2024-06-27 23:55:14,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007620352] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:55:14,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:55:14,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:55:14,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472142219] [2024-06-27 23:55:14,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:55:14,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:55:14,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:55:14,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:55:14,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:55:14,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:55:14,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 534 places, 406 transitions, 6249 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states 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 23:55:14,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:55:14,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:55:14,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:55:15,534 INFO L124 PetriNetUnfolderBase]: 940/1776 cut-off events. [2024-06-27 23:55:15,534 INFO L125 PetriNetUnfolderBase]: For 242535/242535 co-relation queries the response was YES. [2024-06-27 23:55:15,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14222 conditions, 1776 events. 940/1776 cut-off events. For 242535/242535 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 10855 event pairs, 139 based on Foata normal form. 1/1777 useless extension candidates. Maximal degree in co-relation 14010. Up to 1253 conditions per place. [2024-06-27 23:55:15,560 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 306 selfloop transitions, 110 changer transitions 0/419 dead transitions. [2024-06-27 23:55:15,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 542 places, 419 transitions, 7723 flow [2024-06-27 23:55:15,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:55:15,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:55:15,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 132 transitions. [2024-06-27 23:55:15,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4731182795698925 [2024-06-27 23:55:15,561 INFO L175 Difference]: Start difference. First operand has 534 places, 406 transitions, 6249 flow. Second operand 9 states and 132 transitions. [2024-06-27 23:55:15,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 542 places, 419 transitions, 7723 flow [2024-06-27 23:55:17,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 534 places, 419 transitions, 7415 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-06-27 23:55:17,012 INFO L231 Difference]: Finished difference. Result has 535 places, 408 transitions, 6222 flow [2024-06-27 23:55:17,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5941, PETRI_DIFFERENCE_MINUEND_PLACES=526, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6222, PETRI_PLACES=535, PETRI_TRANSITIONS=408} [2024-06-27 23:55:17,013 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 505 predicate places. [2024-06-27 23:55:17,013 INFO L495 AbstractCegarLoop]: Abstraction has has 535 places, 408 transitions, 6222 flow [2024-06-27 23:55:17,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states 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 23:55:17,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:55:17,013 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:55:17,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-27 23:55:17,013 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:55:17,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:55:17,013 INFO L85 PathProgramCache]: Analyzing trace with hash 291967307, now seen corresponding path program 7 times [2024-06-27 23:55:17,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:55:17,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364563954] [2024-06-27 23:55:17,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:55:17,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:55:17,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:55:18,164 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 23:55:18,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:55:18,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364563954] [2024-06-27 23:55:18,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364563954] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:55:18,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:55:18,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:55:18,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473063339] [2024-06-27 23:55:18,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:55:18,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:55:18,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:55:18,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:55:18,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:55:18,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:55:18,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 535 places, 408 transitions, 6222 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:55:18,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:55:18,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:55:18,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:55:18,781 INFO L124 PetriNetUnfolderBase]: 941/1779 cut-off events. [2024-06-27 23:55:18,781 INFO L125 PetriNetUnfolderBase]: For 255872/255872 co-relation queries the response was YES. [2024-06-27 23:55:18,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13871 conditions, 1779 events. 941/1779 cut-off events. For 255872/255872 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 10870 event pairs, 138 based on Foata normal form. 4/1783 useless extension candidates. Maximal degree in co-relation 13657. Up to 1436 conditions per place. [2024-06-27 23:55:18,808 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 319 selfloop transitions, 101 changer transitions 0/422 dead transitions. [2024-06-27 23:55:18,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 544 places, 422 transitions, 7146 flow [2024-06-27 23:55:18,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:55:18,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:55:18,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-27 23:55:18,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4064516129032258 [2024-06-27 23:55:18,809 INFO L175 Difference]: Start difference. First operand has 535 places, 408 transitions, 6222 flow. Second operand 10 states and 126 transitions. [2024-06-27 23:55:18,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 544 places, 422 transitions, 7146 flow [2024-06-27 23:55:20,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 535 places, 422 transitions, 6745 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-27 23:55:20,154 INFO L231 Difference]: Finished difference. Result has 537 places, 411 transitions, 6100 flow [2024-06-27 23:55:20,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5821, PETRI_DIFFERENCE_MINUEND_PLACES=526, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6100, PETRI_PLACES=537, PETRI_TRANSITIONS=411} [2024-06-27 23:55:20,154 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 507 predicate places. [2024-06-27 23:55:20,154 INFO L495 AbstractCegarLoop]: Abstraction has has 537 places, 411 transitions, 6100 flow [2024-06-27 23:55:20,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:55:20,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:55:20,155 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 23:55:20,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-27 23:55:20,155 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:55:20,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:55:20,155 INFO L85 PathProgramCache]: Analyzing trace with hash -2064440103, now seen corresponding path program 10 times [2024-06-27 23:55:20,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:55:20,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057049541] [2024-06-27 23:55:20,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:55:20,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:55:20,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:55:21,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:55:21,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:55:21,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057049541] [2024-06-27 23:55:21,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057049541] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:55:21,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:55:21,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:55:21,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342740687] [2024-06-27 23:55:21,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:55:21,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:55:21,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:55:21,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:55:21,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:55:21,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:55:21,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 537 places, 411 transitions, 6100 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:55:21,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:55:21,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:55:21,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:55:22,033 INFO L124 PetriNetUnfolderBase]: 933/1759 cut-off events. [2024-06-27 23:55:22,033 INFO L125 PetriNetUnfolderBase]: For 213728/213728 co-relation queries the response was YES. [2024-06-27 23:55:22,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13351 conditions, 1759 events. 933/1759 cut-off events. For 213728/213728 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 10750 event pairs, 136 based on Foata normal form. 2/1761 useless extension candidates. Maximal degree in co-relation 13136. Up to 1238 conditions per place. [2024-06-27 23:55:22,060 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 262 selfloop transitions, 151 changer transitions 6/421 dead transitions. [2024-06-27 23:55:22,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 545 places, 421 transitions, 7244 flow [2024-06-27 23:55:22,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:55:22,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:55:22,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-27 23:55:22,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-27 23:55:22,062 INFO L175 Difference]: Start difference. First operand has 537 places, 411 transitions, 6100 flow. Second operand 9 states and 117 transitions. [2024-06-27 23:55:22,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 545 places, 421 transitions, 7244 flow [2024-06-27 23:55:23,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 539 places, 421 transitions, 6971 flow, removed 77 selfloop flow, removed 6 redundant places. [2024-06-27 23:55:23,387 INFO L231 Difference]: Finished difference. Result has 540 places, 405 transitions, 6071 flow [2024-06-27 23:55:23,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5827, PETRI_DIFFERENCE_MINUEND_PLACES=531, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=411, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6071, PETRI_PLACES=540, PETRI_TRANSITIONS=405} [2024-06-27 23:55:23,387 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 510 predicate places. [2024-06-27 23:55:23,387 INFO L495 AbstractCegarLoop]: Abstraction has has 540 places, 405 transitions, 6071 flow [2024-06-27 23:55:23,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:55:23,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:55:23,388 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 23:55:23,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-27 23:55:23,388 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:55:23,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:55:23,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1616636661, now seen corresponding path program 35 times [2024-06-27 23:55:23,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:55:23,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987111187] [2024-06-27 23:55:23,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:55:23,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:55:23,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:55:24,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:55:24,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:55:24,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987111187] [2024-06-27 23:55:24,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987111187] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:55:24,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:55:24,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:55:24,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431579364] [2024-06-27 23:55:24,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:55:24,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:55:24,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:55:24,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:55:24,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:55:24,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:55:24,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 540 places, 405 transitions, 6071 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:55:24,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:55:24,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:55:24,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:55:25,519 INFO L124 PetriNetUnfolderBase]: 915/1725 cut-off events. [2024-06-27 23:55:25,519 INFO L125 PetriNetUnfolderBase]: For 217271/217271 co-relation queries the response was YES. [2024-06-27 23:55:25,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13367 conditions, 1725 events. 915/1725 cut-off events. For 217271/217271 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 10553 event pairs, 134 based on Foata normal form. 2/1727 useless extension candidates. Maximal degree in co-relation 13150. Up to 1359 conditions per place. [2024-06-27 23:55:25,545 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 258 selfloop transitions, 156 changer transitions 0/416 dead transitions. [2024-06-27 23:55:25,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 550 places, 416 transitions, 6995 flow [2024-06-27 23:55:25,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:55:25,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:55:25,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-27 23:55:25,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34310850439882695 [2024-06-27 23:55:25,546 INFO L175 Difference]: Start difference. First operand has 540 places, 405 transitions, 6071 flow. Second operand 11 states and 117 transitions. [2024-06-27 23:55:25,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 550 places, 416 transitions, 6995 flow [2024-06-27 23:55:26,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 537 places, 416 transitions, 6601 flow, removed 16 selfloop flow, removed 13 redundant places. [2024-06-27 23:55:26,741 INFO L231 Difference]: Finished difference. Result has 538 places, 406 transitions, 6069 flow [2024-06-27 23:55:26,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5681, PETRI_DIFFERENCE_MINUEND_PLACES=527, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6069, PETRI_PLACES=538, PETRI_TRANSITIONS=406} [2024-06-27 23:55:26,742 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 508 predicate places. [2024-06-27 23:55:26,742 INFO L495 AbstractCegarLoop]: Abstraction has has 538 places, 406 transitions, 6069 flow [2024-06-27 23:55:26,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:55:26,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:55:26,742 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 23:55:26,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-27 23:55:26,742 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:55:26,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:55:26,742 INFO L85 PathProgramCache]: Analyzing trace with hash -2046345593, now seen corresponding path program 36 times [2024-06-27 23:55:26,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:55:26,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719986863] [2024-06-27 23:55:26,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:55:26,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:55:26,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:55:28,259 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 23:55:28,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:55:28,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719986863] [2024-06-27 23:55:28,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719986863] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:55:28,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:55:28,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:55:28,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528875123] [2024-06-27 23:55:28,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:55:28,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:55:28,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:55:28,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:55:28,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:55:28,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:55:28,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 538 places, 406 transitions, 6069 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:55:28,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:55:28,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:55:28,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:55:28,875 INFO L124 PetriNetUnfolderBase]: 930/1754 cut-off events. [2024-06-27 23:55:28,875 INFO L125 PetriNetUnfolderBase]: For 233021/233021 co-relation queries the response was YES. [2024-06-27 23:55:28,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13846 conditions, 1754 events. 930/1754 cut-off events. For 233021/233021 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 10781 event pairs, 133 based on Foata normal form. 2/1756 useless extension candidates. Maximal degree in co-relation 13631. Up to 1359 conditions per place. [2024-06-27 23:55:28,900 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 285 selfloop transitions, 134 changer transitions 0/421 dead transitions. [2024-06-27 23:55:28,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 547 places, 421 transitions, 7363 flow [2024-06-27 23:55:28,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:55:28,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:55:28,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-27 23:55:28,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36774193548387096 [2024-06-27 23:55:28,902 INFO L175 Difference]: Start difference. First operand has 538 places, 406 transitions, 6069 flow. Second operand 10 states and 114 transitions. [2024-06-27 23:55:28,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 547 places, 421 transitions, 7363 flow [2024-06-27 23:55:30,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 536 places, 421 transitions, 6974 flow, removed 36 selfloop flow, removed 11 redundant places. [2024-06-27 23:55:30,145 INFO L231 Difference]: Finished difference. Result has 538 places, 409 transitions, 6114 flow [2024-06-27 23:55:30,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5680, PETRI_DIFFERENCE_MINUEND_PLACES=527, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6114, PETRI_PLACES=538, PETRI_TRANSITIONS=409} [2024-06-27 23:55:30,146 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 508 predicate places. [2024-06-27 23:55:30,146 INFO L495 AbstractCegarLoop]: Abstraction has has 538 places, 409 transitions, 6114 flow [2024-06-27 23:55:30,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:55:30,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:55:30,146 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 23:55:30,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-27 23:55:30,146 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:55:30,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:55:30,146 INFO L85 PathProgramCache]: Analyzing trace with hash -2015841017, now seen corresponding path program 37 times [2024-06-27 23:55:30,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:55:30,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120138330] [2024-06-27 23:55:30,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:55:30,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:55:30,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:55:31,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:55:31,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:55:31,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120138330] [2024-06-27 23:55:31,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120138330] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:55:31,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:55:31,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:55:31,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974380079] [2024-06-27 23:55:31,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:55:31,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:55:31,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:55:31,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:55:31,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:55:31,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:55:31,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 538 places, 409 transitions, 6114 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:55:31,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:55:31,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:55:31,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:55:32,310 INFO L124 PetriNetUnfolderBase]: 934/1762 cut-off events. [2024-06-27 23:55:32,310 INFO L125 PetriNetUnfolderBase]: For 236421/236421 co-relation queries the response was YES. [2024-06-27 23:55:32,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13872 conditions, 1762 events. 934/1762 cut-off events. For 236421/236421 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 10847 event pairs, 139 based on Foata normal form. 2/1764 useless extension candidates. Maximal degree in co-relation 13657. Up to 1396 conditions per place. [2024-06-27 23:55:32,331 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 303 selfloop transitions, 115 changer transitions 0/420 dead transitions. [2024-06-27 23:55:32,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 548 places, 420 transitions, 7046 flow [2024-06-27 23:55:32,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:55:32,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:55:32,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-27 23:55:32,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35777126099706746 [2024-06-27 23:55:32,332 INFO L175 Difference]: Start difference. First operand has 538 places, 409 transitions, 6114 flow. Second operand 11 states and 122 transitions. [2024-06-27 23:55:32,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 548 places, 420 transitions, 7046 flow [2024-06-27 23:55:33,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 542 places, 420 transitions, 6783 flow, removed 47 selfloop flow, removed 6 redundant places. [2024-06-27 23:55:33,628 INFO L231 Difference]: Finished difference. Result has 543 places, 410 transitions, 6161 flow [2024-06-27 23:55:33,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5851, PETRI_DIFFERENCE_MINUEND_PLACES=532, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6161, PETRI_PLACES=543, PETRI_TRANSITIONS=410} [2024-06-27 23:55:33,628 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 513 predicate places. [2024-06-27 23:55:33,628 INFO L495 AbstractCegarLoop]: Abstraction has has 543 places, 410 transitions, 6161 flow [2024-06-27 23:55:33,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:55:33,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:55:33,628 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 23:55:33,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-27 23:55:33,629 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:55:33,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:55:33,629 INFO L85 PathProgramCache]: Analyzing trace with hash -2046340943, now seen corresponding path program 38 times [2024-06-27 23:55:33,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:55:33,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826073823] [2024-06-27 23:55:33,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:55:33,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:55:33,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:55:35,165 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 23:55:35,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:55:35,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826073823] [2024-06-27 23:55:35,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826073823] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:55:35,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:55:35,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:55:35,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042524709] [2024-06-27 23:55:35,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:55:35,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:55:35,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:55:35,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:55:35,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:55:35,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:55:35,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 543 places, 410 transitions, 6161 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:55:35,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:55:35,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:55:35,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:55:35,851 INFO L124 PetriNetUnfolderBase]: 931/1757 cut-off events. [2024-06-27 23:55:35,851 INFO L125 PetriNetUnfolderBase]: For 215851/215851 co-relation queries the response was YES. [2024-06-27 23:55:35,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13502 conditions, 1757 events. 931/1757 cut-off events. For 215851/215851 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 10824 event pairs, 138 based on Foata normal form. 2/1759 useless extension candidates. Maximal degree in co-relation 13285. Up to 1391 conditions per place. [2024-06-27 23:55:35,877 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 286 selfloop transitions, 132 changer transitions 0/420 dead transitions. [2024-06-27 23:55:35,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 552 places, 420 transitions, 7019 flow [2024-06-27 23:55:35,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:55:35,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:55:35,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-27 23:55:35,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36451612903225805 [2024-06-27 23:55:35,878 INFO L175 Difference]: Start difference. First operand has 543 places, 410 transitions, 6161 flow. Second operand 10 states and 113 transitions. [2024-06-27 23:55:35,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 552 places, 420 transitions, 7019 flow [2024-06-27 23:55:37,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 543 places, 420 transitions, 6675 flow, removed 58 selfloop flow, removed 9 redundant places. [2024-06-27 23:55:37,265 INFO L231 Difference]: Finished difference. Result has 544 places, 410 transitions, 6085 flow [2024-06-27 23:55:37,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5817, PETRI_DIFFERENCE_MINUEND_PLACES=534, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6085, PETRI_PLACES=544, PETRI_TRANSITIONS=410} [2024-06-27 23:55:37,266 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 514 predicate places. [2024-06-27 23:55:37,266 INFO L495 AbstractCegarLoop]: Abstraction has has 544 places, 410 transitions, 6085 flow [2024-06-27 23:55:37,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:55:37,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:55:37,266 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 23:55:37,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-27 23:55:37,266 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:55:37,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:55:37,267 INFO L85 PathProgramCache]: Analyzing trace with hash -217460341, now seen corresponding path program 11 times [2024-06-27 23:55:37,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:55:37,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525937050] [2024-06-27 23:55:37,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:55:37,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:55:37,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:55:38,682 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 23:55:38,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:55:38,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525937050] [2024-06-27 23:55:38,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525937050] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:55:38,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:55:38,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:55:38,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205239768] [2024-06-27 23:55:38,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:55:38,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:55:38,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:55:38,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:55:38,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:55:38,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:55:38,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 544 places, 410 transitions, 6085 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:55:38,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:55:38,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:55:38,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:55:39,330 INFO L124 PetriNetUnfolderBase]: 926/1742 cut-off events. [2024-06-27 23:55:39,331 INFO L125 PetriNetUnfolderBase]: For 193983/193983 co-relation queries the response was YES. [2024-06-27 23:55:39,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13063 conditions, 1742 events. 926/1742 cut-off events. For 193983/193983 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 10749 event pairs, 132 based on Foata normal form. 1/1743 useless extension candidates. Maximal degree in co-relation 12845. Up to 1222 conditions per place. [2024-06-27 23:55:39,357 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 288 selfloop transitions, 127 changer transitions 3/420 dead transitions. [2024-06-27 23:55:39,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 552 places, 420 transitions, 7229 flow [2024-06-27 23:55:39,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:55:39,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:55:39,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-27 23:55:39,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4229390681003584 [2024-06-27 23:55:39,358 INFO L175 Difference]: Start difference. First operand has 544 places, 410 transitions, 6085 flow. Second operand 9 states and 118 transitions. [2024-06-27 23:55:39,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 552 places, 420 transitions, 7229 flow [2024-06-27 23:55:40,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 544 places, 420 transitions, 6929 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-27 23:55:40,558 INFO L231 Difference]: Finished difference. Result has 545 places, 407 transitions, 6017 flow [2024-06-27 23:55:40,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5785, PETRI_DIFFERENCE_MINUEND_PLACES=536, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6017, PETRI_PLACES=545, PETRI_TRANSITIONS=407} [2024-06-27 23:55:40,559 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 515 predicate places. [2024-06-27 23:55:40,559 INFO L495 AbstractCegarLoop]: Abstraction has has 545 places, 407 transitions, 6017 flow [2024-06-27 23:55:40,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:55:40,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:55:40,559 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 23:55:40,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-27 23:55:40,559 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:55:40,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:55:40,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1927948515, now seen corresponding path program 12 times [2024-06-27 23:55:40,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:55:40,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540043729] [2024-06-27 23:55:40,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:55:40,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:55:40,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:55:41,891 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 23:55:41,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:55:41,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540043729] [2024-06-27 23:55:41,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540043729] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:55:41,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:55:41,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:55:41,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22374050] [2024-06-27 23:55:41,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:55:41,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:55:41,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:55:41,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:55:41,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:55:41,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:55:41,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 545 places, 407 transitions, 6017 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:55:41,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:55:41,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:55:41,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:55:42,611 INFO L124 PetriNetUnfolderBase]: 912/1712 cut-off events. [2024-06-27 23:55:42,612 INFO L125 PetriNetUnfolderBase]: For 195347/195347 co-relation queries the response was YES. [2024-06-27 23:55:42,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12874 conditions, 1712 events. 912/1712 cut-off events. For 195347/195347 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 10590 event pairs, 128 based on Foata normal form. 1/1713 useless extension candidates. Maximal degree in co-relation 12656. Up to 1191 conditions per place. [2024-06-27 23:55:42,634 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 300 selfloop transitions, 117 changer transitions 0/419 dead transitions. [2024-06-27 23:55:42,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 554 places, 419 transitions, 7215 flow [2024-06-27 23:55:42,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:55:42,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:55:42,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-27 23:55:42,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4096774193548387 [2024-06-27 23:55:42,635 INFO L175 Difference]: Start difference. First operand has 545 places, 407 transitions, 6017 flow. Second operand 10 states and 127 transitions. [2024-06-27 23:55:42,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 554 places, 419 transitions, 7215 flow [2024-06-27 23:55:43,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 541 places, 419 transitions, 6876 flow, removed 11 selfloop flow, removed 13 redundant places. [2024-06-27 23:55:43,771 INFO L231 Difference]: Finished difference. Result has 542 places, 409 transitions, 5976 flow [2024-06-27 23:55:43,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5688, PETRI_DIFFERENCE_MINUEND_PLACES=532, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5976, PETRI_PLACES=542, PETRI_TRANSITIONS=409} [2024-06-27 23:55:43,772 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 512 predicate places. [2024-06-27 23:55:43,772 INFO L495 AbstractCegarLoop]: Abstraction has has 542 places, 409 transitions, 5976 flow [2024-06-27 23:55:43,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:55:43,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:55:43,772 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 23:55:43,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-27 23:55:43,772 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:55:43,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:55:43,773 INFO L85 PathProgramCache]: Analyzing trace with hash -2009584907, now seen corresponding path program 39 times [2024-06-27 23:55:43,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:55:43,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629596684] [2024-06-27 23:55:43,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:55:43,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:55:43,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:55:45,228 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 23:55:45,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:55:45,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629596684] [2024-06-27 23:55:45,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629596684] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:55:45,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:55:45,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:55:45,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087799247] [2024-06-27 23:55:45,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:55:45,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:55:45,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:55:45,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:55:45,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:55:45,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:55:45,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 542 places, 409 transitions, 5976 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:55:45,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:55:45,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:55:45,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:55:45,893 INFO L124 PetriNetUnfolderBase]: 916/1720 cut-off events. [2024-06-27 23:55:45,894 INFO L125 PetriNetUnfolderBase]: For 205437/205437 co-relation queries the response was YES. [2024-06-27 23:55:45,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12923 conditions, 1720 events. 916/1720 cut-off events. For 205437/205437 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 10654 event pairs, 132 based on Foata normal form. 2/1722 useless extension candidates. Maximal degree in co-relation 12705. Up to 1354 conditions per place. [2024-06-27 23:55:45,920 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 301 selfloop transitions, 117 changer transitions 0/420 dead transitions. [2024-06-27 23:55:45,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 552 places, 420 transitions, 6910 flow [2024-06-27 23:55:45,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:55:45,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:55:45,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-27 23:55:45,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-27 23:55:45,921 INFO L175 Difference]: Start difference. First operand has 542 places, 409 transitions, 5976 flow. Second operand 11 states and 121 transitions. [2024-06-27 23:55:45,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 552 places, 420 transitions, 6910 flow [2024-06-27 23:55:47,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 543 places, 420 transitions, 6574 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-27 23:55:47,075 INFO L231 Difference]: Finished difference. Result has 544 places, 410 transitions, 5956 flow [2024-06-27 23:55:47,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5640, PETRI_DIFFERENCE_MINUEND_PLACES=533, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5956, PETRI_PLACES=544, PETRI_TRANSITIONS=410} [2024-06-27 23:55:47,076 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 514 predicate places. [2024-06-27 23:55:47,076 INFO L495 AbstractCegarLoop]: Abstraction has has 544 places, 410 transitions, 5956 flow [2024-06-27 23:55:47,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:55:47,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:55:47,076 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 23:55:47,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-27 23:55:47,077 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:55:47,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:55:47,077 INFO L85 PathProgramCache]: Analyzing trace with hash 2108130899, now seen corresponding path program 40 times [2024-06-27 23:55:47,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:55:47,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113847681] [2024-06-27 23:55:47,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:55:47,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:55:47,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:55:48,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:55:48,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:55:48,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113847681] [2024-06-27 23:55:48,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113847681] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:55:48,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:55:48,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:55:48,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536820483] [2024-06-27 23:55:48,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:55:48,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:55:48,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:55:48,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:55:48,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:55:48,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:55:48,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 544 places, 410 transitions, 5956 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:55:48,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:55:48,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:55:48,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:55:49,248 INFO L124 PetriNetUnfolderBase]: 924/1736 cut-off events. [2024-06-27 23:55:49,248 INFO L125 PetriNetUnfolderBase]: For 207892/207892 co-relation queries the response was YES. [2024-06-27 23:55:49,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13031 conditions, 1736 events. 924/1736 cut-off events. For 207892/207892 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 10783 event pairs, 130 based on Foata normal form. 2/1738 useless extension candidates. Maximal degree in co-relation 12813. Up to 1273 conditions per place. [2024-06-27 23:55:49,275 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 298 selfloop transitions, 125 changer transitions 0/425 dead transitions. [2024-06-27 23:55:49,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 553 places, 425 transitions, 7202 flow [2024-06-27 23:55:49,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:55:49,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:55:49,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-27 23:55:49,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-27 23:55:49,277 INFO L175 Difference]: Start difference. First operand has 544 places, 410 transitions, 5956 flow. Second operand 10 states and 115 transitions. [2024-06-27 23:55:49,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 553 places, 425 transitions, 7202 flow [2024-06-27 23:55:50,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 544 places, 425 transitions, 6896 flow, removed 37 selfloop flow, removed 9 redundant places. [2024-06-27 23:55:50,366 INFO L231 Difference]: Finished difference. Result has 546 places, 412 transitions, 5994 flow [2024-06-27 23:55:50,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5650, PETRI_DIFFERENCE_MINUEND_PLACES=535, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5994, PETRI_PLACES=546, PETRI_TRANSITIONS=412} [2024-06-27 23:55:50,367 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 516 predicate places. [2024-06-27 23:55:50,367 INFO L495 AbstractCegarLoop]: Abstraction has has 546 places, 412 transitions, 5994 flow [2024-06-27 23:55:50,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:55:50,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:55:50,367 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 23:55:50,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-27 23:55:50,367 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:55:50,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:55:50,367 INFO L85 PathProgramCache]: Analyzing trace with hash -2009584721, now seen corresponding path program 13 times [2024-06-27 23:55:50,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:55:50,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930118317] [2024-06-27 23:55:50,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:55:50,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:55:50,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:55:51,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:55:51,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:55:51,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930118317] [2024-06-27 23:55:51,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930118317] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:55:51,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:55:51,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:55:51,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263798607] [2024-06-27 23:55:51,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:55:51,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:55:51,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:55:51,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:55:51,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:55:51,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:55:51,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 546 places, 412 transitions, 5994 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states 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 23:55:51,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:55:51,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:55:51,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:55:52,234 INFO L124 PetriNetUnfolderBase]: 922/1733 cut-off events. [2024-06-27 23:55:52,234 INFO L125 PetriNetUnfolderBase]: For 187665/187665 co-relation queries the response was YES. [2024-06-27 23:55:52,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12785 conditions, 1733 events. 922/1733 cut-off events. For 187665/187665 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 10774 event pairs, 134 based on Foata normal form. 1/1734 useless extension candidates. Maximal degree in co-relation 12566. Up to 1213 conditions per place. [2024-06-27 23:55:52,260 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 306 selfloop transitions, 112 changer transitions 0/421 dead transitions. [2024-06-27 23:55:52,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 554 places, 421 transitions, 6850 flow [2024-06-27 23:55:52,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:55:52,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:55:52,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 129 transitions. [2024-06-27 23:55:52,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46236559139784944 [2024-06-27 23:55:52,261 INFO L175 Difference]: Start difference. First operand has 546 places, 412 transitions, 5994 flow. Second operand 9 states and 129 transitions. [2024-06-27 23:55:52,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 554 places, 421 transitions, 6850 flow [2024-06-27 23:55:53,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 530 places, 421 transitions, 6204 flow, removed 84 selfloop flow, removed 24 redundant places. [2024-06-27 23:55:53,422 INFO L231 Difference]: Finished difference. Result has 531 places, 412 transitions, 5579 flow [2024-06-27 23:55:53,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5348, PETRI_DIFFERENCE_MINUEND_PLACES=522, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5579, PETRI_PLACES=531, PETRI_TRANSITIONS=412} [2024-06-27 23:55:53,423 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 501 predicate places. [2024-06-27 23:55:53,423 INFO L495 AbstractCegarLoop]: Abstraction has has 531 places, 412 transitions, 5579 flow [2024-06-27 23:55:53,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states 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 23:55:53,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:55:53,423 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 23:55:53,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-27 23:55:53,423 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:55:53,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:55:53,424 INFO L85 PathProgramCache]: Analyzing trace with hash -2016018647, now seen corresponding path program 41 times [2024-06-27 23:55:53,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:55:53,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188353635] [2024-06-27 23:55:53,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:55:53,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:55:53,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:55:55,013 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 23:55:55,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:55:55,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188353635] [2024-06-27 23:55:55,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188353635] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:55:55,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:55:55,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:55:55,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214775068] [2024-06-27 23:55:55,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:55:55,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:55:55,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:55:55,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:55:55,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:55:55,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:55:55,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 531 places, 412 transitions, 5579 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:55:55,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:55:55,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:55:55,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:55:55,654 INFO L124 PetriNetUnfolderBase]: 919/1728 cut-off events. [2024-06-27 23:55:55,654 INFO L125 PetriNetUnfolderBase]: For 173817/173817 co-relation queries the response was YES. [2024-06-27 23:55:55,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11544 conditions, 1728 events. 919/1728 cut-off events. For 173817/173817 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 10747 event pairs, 131 based on Foata normal form. 2/1730 useless extension candidates. Maximal degree in co-relation 11342. Up to 1342 conditions per place. [2024-06-27 23:55:55,678 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 305 selfloop transitions, 116 changer transitions 0/423 dead transitions. [2024-06-27 23:55:55,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 540 places, 423 transitions, 6445 flow [2024-06-27 23:55:55,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:55:55,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:55:55,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-27 23:55:55,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3774193548387097 [2024-06-27 23:55:55,679 INFO L175 Difference]: Start difference. First operand has 531 places, 412 transitions, 5579 flow. Second operand 10 states and 117 transitions. [2024-06-27 23:55:55,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 540 places, 423 transitions, 6445 flow [2024-06-27 23:55:56,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 530 places, 423 transitions, 6146 flow, removed 23 selfloop flow, removed 10 redundant places. [2024-06-27 23:55:56,741 INFO L231 Difference]: Finished difference. Result has 531 places, 412 transitions, 5516 flow [2024-06-27 23:55:56,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5280, PETRI_DIFFERENCE_MINUEND_PLACES=521, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5516, PETRI_PLACES=531, PETRI_TRANSITIONS=412} [2024-06-27 23:55:56,741 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 501 predicate places. [2024-06-27 23:55:56,741 INFO L495 AbstractCegarLoop]: Abstraction has has 531 places, 412 transitions, 5516 flow [2024-06-27 23:55:56,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:55:56,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:55:56,742 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 23:55:56,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-27 23:55:56,742 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:55:56,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:55:56,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1408071917, now seen corresponding path program 1 times [2024-06-27 23:55:56,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:55:56,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139884090] [2024-06-27 23:55:56,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:55:56,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:55:56,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:55:58,074 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 23:55:58,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:55:58,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139884090] [2024-06-27 23:55:58,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139884090] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:55:58,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:55:58,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:55:58,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816981643] [2024-06-27 23:55:58,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:55:58,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:55:58,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:55:58,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:55:58,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:55:58,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:55:58,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 531 places, 412 transitions, 5516 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states 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 23:55:58,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:55:58,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:55:58,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:55:58,639 INFO L124 PetriNetUnfolderBase]: 935/1760 cut-off events. [2024-06-27 23:55:58,639 INFO L125 PetriNetUnfolderBase]: For 171150/171150 co-relation queries the response was YES. [2024-06-27 23:55:58,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11635 conditions, 1760 events. 935/1760 cut-off events. For 171150/171150 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 10997 event pairs, 142 based on Foata normal form. 2/1762 useless extension candidates. Maximal degree in co-relation 11432. Up to 1500 conditions per place. [2024-06-27 23:55:58,664 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 391 selfloop transitions, 42 changer transitions 0/435 dead transitions. [2024-06-27 23:55:58,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 540 places, 435 transitions, 6493 flow [2024-06-27 23:55:58,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:55:58,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:55:58,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-27 23:55:58,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33548387096774196 [2024-06-27 23:55:58,665 INFO L175 Difference]: Start difference. First operand has 531 places, 412 transitions, 5516 flow. Second operand 10 states and 104 transitions. [2024-06-27 23:55:58,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 540 places, 435 transitions, 6493 flow [2024-06-27 23:55:59,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 527 places, 435 transitions, 5913 flow, removed 9 selfloop flow, removed 13 redundant places. [2024-06-27 23:55:59,811 INFO L231 Difference]: Finished difference. Result has 531 places, 416 transitions, 5133 flow [2024-06-27 23:55:59,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4938, PETRI_DIFFERENCE_MINUEND_PLACES=518, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5133, PETRI_PLACES=531, PETRI_TRANSITIONS=416} [2024-06-27 23:55:59,811 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 501 predicate places. [2024-06-27 23:55:59,811 INFO L495 AbstractCegarLoop]: Abstraction has has 531 places, 416 transitions, 5133 flow [2024-06-27 23:55:59,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states 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 23:55:59,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:55:59,811 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 23:55:59,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-27 23:55:59,811 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:55:59,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:55:59,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1147707195, now seen corresponding path program 2 times [2024-06-27 23:55:59,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:55:59,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825930584] [2024-06-27 23:55:59,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:55:59,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:55:59,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:56:01,136 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 23:56:01,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:56:01,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825930584] [2024-06-27 23:56:01,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825930584] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:56:01,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:56:01,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:56:01,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353188609] [2024-06-27 23:56:01,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:56:01,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:56:01,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:56:01,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:56:01,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:56:01,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:56:01,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 531 places, 416 transitions, 5133 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states 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 23:56:01,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:56:01,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:56:01,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:56:01,834 INFO L124 PetriNetUnfolderBase]: 946/1781 cut-off events. [2024-06-27 23:56:01,834 INFO L125 PetriNetUnfolderBase]: For 194003/194003 co-relation queries the response was YES. [2024-06-27 23:56:01,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11418 conditions, 1781 events. 946/1781 cut-off events. For 194003/194003 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 11168 event pairs, 161 based on Foata normal form. 2/1783 useless extension candidates. Maximal degree in co-relation 11217. Up to 1412 conditions per place. [2024-06-27 23:56:01,857 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 377 selfloop transitions, 58 changer transitions 0/437 dead transitions. [2024-06-27 23:56:01,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 540 places, 437 transitions, 6367 flow [2024-06-27 23:56:01,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:56:01,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:56:01,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-27 23:56:01,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36129032258064514 [2024-06-27 23:56:01,858 INFO L175 Difference]: Start difference. First operand has 531 places, 416 transitions, 5133 flow. Second operand 10 states and 112 transitions. [2024-06-27 23:56:01,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 540 places, 437 transitions, 6367 flow [2024-06-27 23:56:02,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 535 places, 437 transitions, 6271 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-27 23:56:02,878 INFO L231 Difference]: Finished difference. Result has 536 places, 418 transitions, 5190 flow [2024-06-27 23:56:02,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5037, PETRI_DIFFERENCE_MINUEND_PLACES=526, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=416, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5190, PETRI_PLACES=536, PETRI_TRANSITIONS=418} [2024-06-27 23:56:02,878 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 506 predicate places. [2024-06-27 23:56:02,878 INFO L495 AbstractCegarLoop]: Abstraction has has 536 places, 418 transitions, 5190 flow [2024-06-27 23:56:02,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states 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 23:56:02,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:56:02,878 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 23:56:02,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-27 23:56:02,878 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:56:02,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:56:02,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1463412907, now seen corresponding path program 3 times [2024-06-27 23:56:02,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:56:02,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375364692] [2024-06-27 23:56:02,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:56:02,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:56:02,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:56:04,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:56:04,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:56:04,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375364692] [2024-06-27 23:56:04,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375364692] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:56:04,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:56:04,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:56:04,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953475392] [2024-06-27 23:56:04,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:56:04,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:56:04,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:56:04,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:56:04,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:56:04,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:56:04,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 536 places, 418 transitions, 5190 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states 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 23:56:04,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:56:04,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:56:04,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:56:04,874 INFO L124 PetriNetUnfolderBase]: 950/1789 cut-off events. [2024-06-27 23:56:04,874 INFO L125 PetriNetUnfolderBase]: For 199112/199112 co-relation queries the response was YES. [2024-06-27 23:56:04,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11493 conditions, 1789 events. 950/1789 cut-off events. For 199112/199112 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 11264 event pairs, 176 based on Foata normal form. 2/1791 useless extension candidates. Maximal degree in co-relation 11291. Up to 1524 conditions per place. [2024-06-27 23:56:04,899 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 374 selfloop transitions, 61 changer transitions 0/437 dead transitions. [2024-06-27 23:56:04,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 545 places, 437 transitions, 6412 flow [2024-06-27 23:56:04,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:56:04,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:56:04,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-27 23:56:04,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3580645161290323 [2024-06-27 23:56:04,904 INFO L175 Difference]: Start difference. First operand has 536 places, 418 transitions, 5190 flow. Second operand 10 states and 111 transitions. [2024-06-27 23:56:04,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 545 places, 437 transitions, 6412 flow [2024-06-27 23:56:05,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 533 places, 437 transitions, 6156 flow, removed 31 selfloop flow, removed 12 redundant places. [2024-06-27 23:56:05,947 INFO L231 Difference]: Finished difference. Result has 534 places, 419 transitions, 5079 flow [2024-06-27 23:56:05,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4938, PETRI_DIFFERENCE_MINUEND_PLACES=524, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5079, PETRI_PLACES=534, PETRI_TRANSITIONS=419} [2024-06-27 23:56:05,948 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 504 predicate places. [2024-06-27 23:56:05,948 INFO L495 AbstractCegarLoop]: Abstraction has has 534 places, 419 transitions, 5079 flow [2024-06-27 23:56:05,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states 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 23:56:05,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:56:05,948 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 23:56:05,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-27 23:56:05,948 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:56:05,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:56:05,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1463562637, now seen corresponding path program 4 times [2024-06-27 23:56:05,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:56:05,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812078909] [2024-06-27 23:56:05,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:56:05,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:56:05,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:56:07,364 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 23:56:07,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:56:07,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812078909] [2024-06-27 23:56:07,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812078909] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:56:07,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:56:07,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:56:07,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7832134] [2024-06-27 23:56:07,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:56:07,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:56:07,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:56:07,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:56:07,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:56:07,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:56:07,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 534 places, 419 transitions, 5079 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states 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 23:56:07,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:56:07,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:56:07,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:56:07,940 INFO L124 PetriNetUnfolderBase]: 958/1805 cut-off events. [2024-06-27 23:56:07,941 INFO L125 PetriNetUnfolderBase]: For 222980/222980 co-relation queries the response was YES. [2024-06-27 23:56:07,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11333 conditions, 1805 events. 958/1805 cut-off events. For 222980/222980 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 11380 event pairs, 198 based on Foata normal form. 4/1809 useless extension candidates. Maximal degree in co-relation 11137. Up to 1605 conditions per place. [2024-06-27 23:56:07,965 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 356 selfloop transitions, 78 changer transitions 0/436 dead transitions. [2024-06-27 23:56:07,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 544 places, 436 transitions, 6013 flow [2024-06-27 23:56:07,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:56:07,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:56:07,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-27 23:56:07,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3343108504398827 [2024-06-27 23:56:07,966 INFO L175 Difference]: Start difference. First operand has 534 places, 419 transitions, 5079 flow. Second operand 11 states and 114 transitions. [2024-06-27 23:56:07,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 544 places, 436 transitions, 6013 flow [2024-06-27 23:56:09,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 537 places, 436 transitions, 5818 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-27 23:56:09,070 INFO L231 Difference]: Finished difference. Result has 538 places, 421 transitions, 5080 flow [2024-06-27 23:56:09,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4885, PETRI_DIFFERENCE_MINUEND_PLACES=527, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5080, PETRI_PLACES=538, PETRI_TRANSITIONS=421} [2024-06-27 23:56:09,071 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 508 predicate places. [2024-06-27 23:56:09,071 INFO L495 AbstractCegarLoop]: Abstraction has has 538 places, 421 transitions, 5080 flow [2024-06-27 23:56:09,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states 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 23:56:09,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:56:09,072 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 23:56:09,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-27 23:56:09,072 INFO L420 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:56:09,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:56:09,072 INFO L85 PathProgramCache]: Analyzing trace with hash -856927815, now seen corresponding path program 5 times [2024-06-27 23:56:09,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:56:09,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294288551] [2024-06-27 23:56:09,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:56:09,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:56:09,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:56:10,532 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 23:56:10,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:56:10,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294288551] [2024-06-27 23:56:10,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294288551] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:56:10,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:56:10,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:56:10,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800505260] [2024-06-27 23:56:10,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:56:10,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:56:10,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:56:10,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:56:10,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:56:10,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:56:10,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 538 places, 421 transitions, 5080 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states 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 23:56:10,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:56:10,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:56:10,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:56:11,254 INFO L124 PetriNetUnfolderBase]: 955/1800 cut-off events. [2024-06-27 23:56:11,255 INFO L125 PetriNetUnfolderBase]: For 181258/181258 co-relation queries the response was YES. [2024-06-27 23:56:11,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10905 conditions, 1800 events. 955/1800 cut-off events. For 181258/181258 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 11338 event pairs, 200 based on Foata normal form. 2/1802 useless extension candidates. Maximal degree in co-relation 10708. Up to 1610 conditions per place. [2024-06-27 23:56:11,277 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 371 selfloop transitions, 64 changer transitions 0/437 dead transitions. [2024-06-27 23:56:11,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 547 places, 437 transitions, 5988 flow [2024-06-27 23:56:11,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:56:11,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:56:11,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-27 23:56:11,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-27 23:56:11,278 INFO L175 Difference]: Start difference. First operand has 538 places, 421 transitions, 5080 flow. Second operand 10 states and 109 transitions. [2024-06-27 23:56:11,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 547 places, 437 transitions, 5988 flow [2024-06-27 23:56:12,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 538 places, 437 transitions, 5808 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-27 23:56:12,246 INFO L231 Difference]: Finished difference. Result has 539 places, 421 transitions, 5035 flow [2024-06-27 23:56:12,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4900, PETRI_DIFFERENCE_MINUEND_PLACES=529, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5035, PETRI_PLACES=539, PETRI_TRANSITIONS=421} [2024-06-27 23:56:12,246 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 509 predicate places. [2024-06-27 23:56:12,247 INFO L495 AbstractCegarLoop]: Abstraction has has 539 places, 421 transitions, 5035 flow [2024-06-27 23:56:12,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states 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 23:56:12,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:56:12,247 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 23:56:12,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-27 23:56:12,247 INFO L420 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:56:12,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:56:12,247 INFO L85 PathProgramCache]: Analyzing trace with hash -493245623, now seen corresponding path program 6 times [2024-06-27 23:56:12,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:56:12,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571279381] [2024-06-27 23:56:12,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:56:12,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:56:12,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:56:13,627 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 23:56:13,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:56:13,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571279381] [2024-06-27 23:56:13,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571279381] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:56:13,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:56:13,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:56:13,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844460484] [2024-06-27 23:56:13,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:56:13,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:56:13,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:56:13,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:56:13,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:56:13,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:56:13,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 539 places, 421 transitions, 5035 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:56:13,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:56:13,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:56:13,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:56:14,170 INFO L124 PetriNetUnfolderBase]: 966/1823 cut-off events. [2024-06-27 23:56:14,170 INFO L125 PetriNetUnfolderBase]: For 206316/206316 co-relation queries the response was YES. [2024-06-27 23:56:14,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11276 conditions, 1823 events. 966/1823 cut-off events. For 206316/206316 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 11508 event pairs, 131 based on Foata normal form. 2/1825 useless extension candidates. Maximal degree in co-relation 11080. Up to 1499 conditions per place. [2024-06-27 23:56:14,195 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 391 selfloop transitions, 48 changer transitions 0/442 dead transitions. [2024-06-27 23:56:14,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 548 places, 442 transitions, 6293 flow [2024-06-27 23:56:14,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:56:14,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:56:14,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-27 23:56:14,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4258064516129032 [2024-06-27 23:56:14,196 INFO L175 Difference]: Start difference. First operand has 539 places, 421 transitions, 5035 flow. Second operand 10 states and 132 transitions. [2024-06-27 23:56:14,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 548 places, 442 transitions, 6293 flow [2024-06-27 23:56:15,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 541 places, 442 transitions, 6178 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-27 23:56:15,300 INFO L231 Difference]: Finished difference. Result has 542 places, 423 transitions, 5060 flow [2024-06-27 23:56:15,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4920, PETRI_DIFFERENCE_MINUEND_PLACES=532, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5060, PETRI_PLACES=542, PETRI_TRANSITIONS=423} [2024-06-27 23:56:15,301 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 512 predicate places. [2024-06-27 23:56:15,301 INFO L495 AbstractCegarLoop]: Abstraction has has 542 places, 423 transitions, 5060 flow [2024-06-27 23:56:15,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:56:15,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:56:15,301 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 23:56:15,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-27 23:56:15,301 INFO L420 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:56:15,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:56:15,301 INFO L85 PathProgramCache]: Analyzing trace with hash -202275376, now seen corresponding path program 1 times [2024-06-27 23:56:15,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:56:15,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514663893] [2024-06-27 23:56:15,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:56:15,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:56:15,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:56:16,606 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 23:56:16,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:56:16,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514663893] [2024-06-27 23:56:16,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514663893] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:56:16,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:56:16,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:56:16,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386752430] [2024-06-27 23:56:16,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:56:16,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:56:16,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:56:16,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:56:16,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:56:16,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:56:16,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 542 places, 423 transitions, 5060 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:56:16,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:56:16,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:56:16,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:56:17,226 INFO L124 PetriNetUnfolderBase]: 969/1826 cut-off events. [2024-06-27 23:56:17,226 INFO L125 PetriNetUnfolderBase]: For 197878/197878 co-relation queries the response was YES. [2024-06-27 23:56:17,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11376 conditions, 1826 events. 969/1826 cut-off events. For 197878/197878 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 11504 event pairs, 146 based on Foata normal form. 1/1827 useless extension candidates. Maximal degree in co-relation 11179. Up to 1475 conditions per place. [2024-06-27 23:56:17,252 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 306 selfloop transitions, 127 changer transitions 0/436 dead transitions. [2024-06-27 23:56:17,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 550 places, 436 transitions, 6014 flow [2024-06-27 23:56:17,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:56:17,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:56:17,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 121 transitions. [2024-06-27 23:56:17,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4336917562724014 [2024-06-27 23:56:17,253 INFO L175 Difference]: Start difference. First operand has 542 places, 423 transitions, 5060 flow. Second operand 9 states and 121 transitions. [2024-06-27 23:56:17,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 550 places, 436 transitions, 6014 flow [2024-06-27 23:56:18,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 544 places, 436 transitions, 5930 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-27 23:56:18,345 INFO L231 Difference]: Finished difference. Result has 545 places, 425 transitions, 5308 flow [2024-06-27 23:56:18,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4976, PETRI_DIFFERENCE_MINUEND_PLACES=536, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5308, PETRI_PLACES=545, PETRI_TRANSITIONS=425} [2024-06-27 23:56:18,345 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 515 predicate places. [2024-06-27 23:56:18,345 INFO L495 AbstractCegarLoop]: Abstraction has has 545 places, 425 transitions, 5308 flow [2024-06-27 23:56:18,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:56:18,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:56:18,345 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 23:56:18,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-27 23:56:18,346 INFO L420 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:56:18,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:56:18,346 INFO L85 PathProgramCache]: Analyzing trace with hash 403242799, now seen corresponding path program 7 times [2024-06-27 23:56:18,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:56:18,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138443904] [2024-06-27 23:56:18,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:56:18,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:56:18,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:56:19,940 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 23:56:19,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:56:19,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138443904] [2024-06-27 23:56:19,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138443904] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:56:19,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:56:19,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:56:19,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103484031] [2024-06-27 23:56:19,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:56:19,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:56:19,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:56:19,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:56:19,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:56:20,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:56:20,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 545 places, 425 transitions, 5308 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:56:20,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:56:20,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:56:20,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:56:20,738 INFO L124 PetriNetUnfolderBase]: 973/1835 cut-off events. [2024-06-27 23:56:20,738 INFO L125 PetriNetUnfolderBase]: For 212041/212041 co-relation queries the response was YES. [2024-06-27 23:56:20,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11611 conditions, 1835 events. 973/1835 cut-off events. For 212041/212041 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 11588 event pairs, 158 based on Foata normal form. 2/1837 useless extension candidates. Maximal degree in co-relation 11411. Up to 1651 conditions per place. [2024-06-27 23:56:20,761 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 387 selfloop transitions, 53 changer transitions 0/442 dead transitions. [2024-06-27 23:56:20,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 554 places, 442 transitions, 6240 flow [2024-06-27 23:56:20,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:56:20,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:56:20,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-27 23:56:20,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-27 23:56:20,762 INFO L175 Difference]: Start difference. First operand has 545 places, 425 transitions, 5308 flow. Second operand 10 states and 120 transitions. [2024-06-27 23:56:20,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 554 places, 442 transitions, 6240 flow [2024-06-27 23:56:21,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 547 places, 442 transitions, 5942 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-27 23:56:21,959 INFO L231 Difference]: Finished difference. Result has 548 places, 426 transitions, 5138 flow [2024-06-27 23:56:21,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5010, PETRI_DIFFERENCE_MINUEND_PLACES=538, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5138, PETRI_PLACES=548, PETRI_TRANSITIONS=426} [2024-06-27 23:56:21,959 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 518 predicate places. [2024-06-27 23:56:21,959 INFO L495 AbstractCegarLoop]: Abstraction has has 548 places, 426 transitions, 5138 flow [2024-06-27 23:56:21,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:56:21,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:56:21,959 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 23:56:21,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-27 23:56:21,960 INFO L420 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:56:21,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:56:21,960 INFO L85 PathProgramCache]: Analyzing trace with hash -207252023, now seen corresponding path program 8 times [2024-06-27 23:56:21,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:56:21,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664731716] [2024-06-27 23:56:21,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:56:21,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:56:21,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:56:23,502 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 23:56:23,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:56:23,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664731716] [2024-06-27 23:56:23,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664731716] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:56:23,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:56:23,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:56:23,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498226871] [2024-06-27 23:56:23,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:56:23,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:56:23,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:56:23,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:56:23,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:56:23,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:56:23,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 548 places, 426 transitions, 5138 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:56:23,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:56:23,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:56:23,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:56:24,258 INFO L124 PetriNetUnfolderBase]: 970/1830 cut-off events. [2024-06-27 23:56:24,258 INFO L125 PetriNetUnfolderBase]: For 192060/192060 co-relation queries the response was YES. [2024-06-27 23:56:24,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11133 conditions, 1830 events. 970/1830 cut-off events. For 192060/192060 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 11553 event pairs, 146 based on Foata normal form. 2/1832 useless extension candidates. Maximal degree in co-relation 10932. Up to 1588 conditions per place. [2024-06-27 23:56:24,284 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 390 selfloop transitions, 51 changer transitions 0/443 dead transitions. [2024-06-27 23:56:24,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 557 places, 443 transitions, 6060 flow [2024-06-27 23:56:24,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:56:24,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:56:24,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-27 23:56:24,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3903225806451613 [2024-06-27 23:56:24,301 INFO L175 Difference]: Start difference. First operand has 548 places, 426 transitions, 5138 flow. Second operand 10 states and 121 transitions. [2024-06-27 23:56:24,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 557 places, 443 transitions, 6060 flow [2024-06-27 23:56:25,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 550 places, 443 transitions, 5948 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-27 23:56:25,413 INFO L231 Difference]: Finished difference. Result has 551 places, 426 transitions, 5134 flow [2024-06-27 23:56:25,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5026, PETRI_DIFFERENCE_MINUEND_PLACES=541, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5134, PETRI_PLACES=551, PETRI_TRANSITIONS=426} [2024-06-27 23:56:25,413 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 521 predicate places. [2024-06-27 23:56:25,414 INFO L495 AbstractCegarLoop]: Abstraction has has 551 places, 426 transitions, 5134 flow [2024-06-27 23:56:25,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:56:25,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:56:25,414 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 23:56:25,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-27 23:56:25,414 INFO L420 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:56:25,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:56:25,414 INFO L85 PathProgramCache]: Analyzing trace with hash -389450481, now seen corresponding path program 9 times [2024-06-27 23:56:25,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:56:25,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144945540] [2024-06-27 23:56:25,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:56:25,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:56:25,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:56:26,837 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 23:56:26,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:56:26,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144945540] [2024-06-27 23:56:26,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144945540] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:56:26,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:56:26,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:56:26,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475415700] [2024-06-27 23:56:26,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:56:26,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:56:26,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:56:26,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:56:26,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:56:26,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:56:26,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 551 places, 426 transitions, 5134 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:56:26,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:56:26,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:56:26,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:56:27,422 INFO L124 PetriNetUnfolderBase]: 981/1850 cut-off events. [2024-06-27 23:56:27,422 INFO L125 PetriNetUnfolderBase]: For 218294/218294 co-relation queries the response was YES. [2024-06-27 23:56:27,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11578 conditions, 1850 events. 981/1850 cut-off events. For 218294/218294 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 11668 event pairs, 148 based on Foata normal form. 2/1852 useless extension candidates. Maximal degree in co-relation 11377. Up to 1444 conditions per place. [2024-06-27 23:56:27,447 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 362 selfloop transitions, 80 changer transitions 0/445 dead transitions. [2024-06-27 23:56:27,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 560 places, 445 transitions, 6411 flow [2024-06-27 23:56:27,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:56:27,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:56:27,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-27 23:56:27,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44193548387096776 [2024-06-27 23:56:27,449 INFO L175 Difference]: Start difference. First operand has 551 places, 426 transitions, 5134 flow. Second operand 10 states and 137 transitions. [2024-06-27 23:56:27,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 560 places, 445 transitions, 6411 flow [2024-06-27 23:56:28,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 553 places, 445 transitions, 6311 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-27 23:56:28,836 INFO L231 Difference]: Finished difference. Result has 554 places, 428 transitions, 5241 flow [2024-06-27 23:56:28,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5034, PETRI_DIFFERENCE_MINUEND_PLACES=544, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5241, PETRI_PLACES=554, PETRI_TRANSITIONS=428} [2024-06-27 23:56:28,837 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 524 predicate places. [2024-06-27 23:56:28,837 INFO L495 AbstractCegarLoop]: Abstraction has has 554 places, 428 transitions, 5241 flow [2024-06-27 23:56:28,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:56:28,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:56:28,837 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 23:56:28,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-27 23:56:28,837 INFO L420 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:56:28,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:56:28,838 INFO L85 PathProgramCache]: Analyzing trace with hash -389306331, now seen corresponding path program 10 times [2024-06-27 23:56:28,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:56:28,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961317963] [2024-06-27 23:56:28,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:56:28,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:56:28,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:56:30,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:56:30,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:56:30,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961317963] [2024-06-27 23:56:30,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961317963] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:56:30,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:56:30,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:56:30,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23642020] [2024-06-27 23:56:30,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:56:30,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:56:30,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:56:30,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:56:30,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:56:30,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:56:30,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 554 places, 428 transitions, 5241 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:56:30,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:56:30,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:56:30,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:56:30,990 INFO L124 PetriNetUnfolderBase]: 985/1858 cut-off events. [2024-06-27 23:56:30,990 INFO L125 PetriNetUnfolderBase]: For 221604/221604 co-relation queries the response was YES. [2024-06-27 23:56:31,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11720 conditions, 1858 events. 985/1858 cut-off events. For 221604/221604 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 11752 event pairs, 152 based on Foata normal form. 2/1860 useless extension candidates. Maximal degree in co-relation 11518. Up to 1488 conditions per place. [2024-06-27 23:56:31,017 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 360 selfloop transitions, 82 changer transitions 0/445 dead transitions. [2024-06-27 23:56:31,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 563 places, 445 transitions, 6500 flow [2024-06-27 23:56:31,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:56:31,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:56:31,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 136 transitions. [2024-06-27 23:56:31,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43870967741935485 [2024-06-27 23:56:31,018 INFO L175 Difference]: Start difference. First operand has 554 places, 428 transitions, 5241 flow. Second operand 10 states and 136 transitions. [2024-06-27 23:56:31,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 563 places, 445 transitions, 6500 flow [2024-06-27 23:56:32,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 557 places, 445 transitions, 6366 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-27 23:56:32,341 INFO L231 Difference]: Finished difference. Result has 558 places, 429 transitions, 5298 flow [2024-06-27 23:56:32,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5115, PETRI_DIFFERENCE_MINUEND_PLACES=548, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5298, PETRI_PLACES=558, PETRI_TRANSITIONS=429} [2024-06-27 23:56:32,341 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 528 predicate places. [2024-06-27 23:56:32,341 INFO L495 AbstractCegarLoop]: Abstraction has has 558 places, 429 transitions, 5298 flow [2024-06-27 23:56:32,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:56:32,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:56:32,342 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 23:56:32,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-27 23:56:32,342 INFO L420 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:56:32,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:56:32,342 INFO L85 PathProgramCache]: Analyzing trace with hash -531553551, now seen corresponding path program 11 times [2024-06-27 23:56:32,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:56:32,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524810337] [2024-06-27 23:56:32,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:56:32,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:56:32,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:56:33,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:56:33,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:56:33,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524810337] [2024-06-27 23:56:33,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524810337] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:56:33,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:56:33,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:56:33,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599986546] [2024-06-27 23:56:33,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:56:33,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:56:33,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:56:33,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:56:33,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:56:34,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:56:34,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 558 places, 429 transitions, 5298 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:56:34,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:56:34,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:56:34,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:56:34,753 INFO L124 PetriNetUnfolderBase]: 996/1879 cut-off events. [2024-06-27 23:56:34,753 INFO L125 PetriNetUnfolderBase]: For 248977/248977 co-relation queries the response was YES. [2024-06-27 23:56:34,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12245 conditions, 1879 events. 996/1879 cut-off events. For 248977/248977 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 11906 event pairs, 145 based on Foata normal form. 2/1881 useless extension candidates. Maximal degree in co-relation 12040. Up to 1324 conditions per place. [2024-06-27 23:56:34,780 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 365 selfloop transitions, 81 changer transitions 0/448 dead transitions. [2024-06-27 23:56:34,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 567 places, 448 transitions, 6584 flow [2024-06-27 23:56:34,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:56:34,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:56:34,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-27 23:56:34,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4064516129032258 [2024-06-27 23:56:34,781 INFO L175 Difference]: Start difference. First operand has 558 places, 429 transitions, 5298 flow. Second operand 10 states and 126 transitions. [2024-06-27 23:56:34,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 567 places, 448 transitions, 6584 flow [2024-06-27 23:56:36,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 559 places, 448 transitions, 6410 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-27 23:56:36,286 INFO L231 Difference]: Finished difference. Result has 560 places, 431 transitions, 5337 flow [2024-06-27 23:56:36,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5124, PETRI_DIFFERENCE_MINUEND_PLACES=550, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5337, PETRI_PLACES=560, PETRI_TRANSITIONS=431} [2024-06-27 23:56:36,287 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 530 predicate places. [2024-06-27 23:56:36,287 INFO L495 AbstractCegarLoop]: Abstraction has has 560 places, 431 transitions, 5337 flow [2024-06-27 23:56:36,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:56:36,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:56:36,287 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 23:56:36,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-27 23:56:36,287 INFO L420 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:56:36,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:56:36,288 INFO L85 PathProgramCache]: Analyzing trace with hash -389300751, now seen corresponding path program 12 times [2024-06-27 23:56:36,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:56:36,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401354282] [2024-06-27 23:56:36,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:56:36,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:56:36,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:56:37,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:56:37,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:56:37,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401354282] [2024-06-27 23:56:37,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401354282] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:56:37,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:56:37,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:56:37,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149332489] [2024-06-27 23:56:37,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:56:37,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:56:37,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:56:37,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:56:37,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:56:37,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:56:37,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 560 places, 431 transitions, 5337 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:56:37,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:56:37,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:56:37,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:56:38,234 INFO L124 PetriNetUnfolderBase]: 993/1874 cut-off events. [2024-06-27 23:56:38,234 INFO L125 PetriNetUnfolderBase]: For 227594/227594 co-relation queries the response was YES. [2024-06-27 23:56:38,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11933 conditions, 1874 events. 993/1874 cut-off events. For 227594/227594 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 11873 event pairs, 154 based on Foata normal form. 2/1876 useless extension candidates. Maximal degree in co-relation 11728. Up to 1531 conditions per place. [2024-06-27 23:56:38,261 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 359 selfloop transitions, 83 changer transitions 0/445 dead transitions. [2024-06-27 23:56:38,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 569 places, 445 transitions, 6260 flow [2024-06-27 23:56:38,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:56:38,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:56:38,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2024-06-27 23:56:38,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.432258064516129 [2024-06-27 23:56:38,263 INFO L175 Difference]: Start difference. First operand has 560 places, 431 transitions, 5337 flow. Second operand 10 states and 134 transitions. [2024-06-27 23:56:38,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 569 places, 445 transitions, 6260 flow [2024-06-27 23:56:39,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 563 places, 445 transitions, 6124 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-27 23:56:39,487 INFO L231 Difference]: Finished difference. Result has 564 places, 431 transitions, 5371 flow [2024-06-27 23:56:39,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5201, PETRI_DIFFERENCE_MINUEND_PLACES=554, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5371, PETRI_PLACES=564, PETRI_TRANSITIONS=431} [2024-06-27 23:56:39,488 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 534 predicate places. [2024-06-27 23:56:39,488 INFO L495 AbstractCegarLoop]: Abstraction has has 564 places, 431 transitions, 5371 flow [2024-06-27 23:56:39,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:56:39,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:56:39,488 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 23:56:39,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-27 23:56:39,488 INFO L420 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:56:39,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:56:39,488 INFO L85 PathProgramCache]: Analyzing trace with hash 675909279, now seen corresponding path program 1 times [2024-06-27 23:56:39,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:56:39,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160983937] [2024-06-27 23:56:39,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:56:39,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:56:39,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:56:40,734 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 23:56:40,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:56:40,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160983937] [2024-06-27 23:56:40,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160983937] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:56:40,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:56:40,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:56:40,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737494030] [2024-06-27 23:56:40,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:56:40,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:56:40,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:56:40,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:56:40,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:56:40,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:56:40,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 564 places, 431 transitions, 5371 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:56:40,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:56:40,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:56:40,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:56:41,538 INFO L124 PetriNetUnfolderBase]: 1034/1961 cut-off events. [2024-06-27 23:56:41,538 INFO L125 PetriNetUnfolderBase]: For 419140/419140 co-relation queries the response was YES. [2024-06-27 23:56:41,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14144 conditions, 1961 events. 1034/1961 cut-off events. For 419140/419140 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 12420 event pairs, 167 based on Foata normal form. 8/1969 useless extension candidates. Maximal degree in co-relation 13936. Up to 1632 conditions per place. [2024-06-27 23:56:41,567 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 349 selfloop transitions, 97 changer transitions 7/455 dead transitions. [2024-06-27 23:56:41,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 574 places, 455 transitions, 6831 flow [2024-06-27 23:56:41,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:56:41,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:56:41,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-27 23:56:41,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40762463343108507 [2024-06-27 23:56:41,568 INFO L175 Difference]: Start difference. First operand has 564 places, 431 transitions, 5371 flow. Second operand 11 states and 139 transitions. [2024-06-27 23:56:41,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 574 places, 455 transitions, 6831 flow [2024-06-27 23:56:43,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 565 places, 455 transitions, 6661 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 23:56:43,536 INFO L231 Difference]: Finished difference. Result has 566 places, 429 transitions, 5385 flow [2024-06-27 23:56:43,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5201, PETRI_DIFFERENCE_MINUEND_PLACES=555, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5385, PETRI_PLACES=566, PETRI_TRANSITIONS=429} [2024-06-27 23:56:43,537 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 536 predicate places. [2024-06-27 23:56:43,537 INFO L495 AbstractCegarLoop]: Abstraction has has 566 places, 429 transitions, 5385 flow [2024-06-27 23:56:43,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:56:43,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:56:43,537 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 23:56:43,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-27 23:56:43,537 INFO L420 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:56:43,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:56:43,537 INFO L85 PathProgramCache]: Analyzing trace with hash 668280923, now seen corresponding path program 13 times [2024-06-27 23:56:43,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:56:43,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681173356] [2024-06-27 23:56:43,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:56:43,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:56:43,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:56:45,058 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 23:56:45,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:56:45,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681173356] [2024-06-27 23:56:45,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681173356] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:56:45,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:56:45,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:56:45,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726832896] [2024-06-27 23:56:45,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:56:45,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:56:45,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:56:45,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:56:45,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:56:45,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:56:45,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 566 places, 429 transitions, 5385 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:56:45,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:56:45,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:56:45,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:56:45,867 INFO L124 PetriNetUnfolderBase]: 1020/1931 cut-off events. [2024-06-27 23:56:45,867 INFO L125 PetriNetUnfolderBase]: For 352548/352548 co-relation queries the response was YES. [2024-06-27 23:56:45,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14021 conditions, 1931 events. 1020/1931 cut-off events. For 352548/352548 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 12224 event pairs, 173 based on Foata normal form. 2/1933 useless extension candidates. Maximal degree in co-relation 13812. Up to 1588 conditions per place. [2024-06-27 23:56:45,893 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 335 selfloop transitions, 107 changer transitions 0/444 dead transitions. [2024-06-27 23:56:45,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 573 places, 444 transitions, 6326 flow [2024-06-27 23:56:45,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:56:45,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:56:45,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-27 23:56:45,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3967741935483871 [2024-06-27 23:56:45,894 INFO L175 Difference]: Start difference. First operand has 566 places, 429 transitions, 5385 flow. Second operand 10 states and 123 transitions. [2024-06-27 23:56:45,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 573 places, 444 transitions, 6326 flow [2024-06-27 23:56:47,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 563 places, 444 transitions, 6128 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-27 23:56:47,835 INFO L231 Difference]: Finished difference. Result has 564 places, 430 transitions, 5425 flow [2024-06-27 23:56:47,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5189, PETRI_DIFFERENCE_MINUEND_PLACES=554, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5425, PETRI_PLACES=564, PETRI_TRANSITIONS=430} [2024-06-27 23:56:47,836 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 534 predicate places. [2024-06-27 23:56:47,836 INFO L495 AbstractCegarLoop]: Abstraction has has 564 places, 430 transitions, 5425 flow [2024-06-27 23:56:47,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:56:47,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:56:47,836 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 23:56:47,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-27 23:56:47,836 INFO L420 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:56:47,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:56:47,836 INFO L85 PathProgramCache]: Analyzing trace with hash 675632573, now seen corresponding path program 14 times [2024-06-27 23:56:47,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:56:47,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280165473] [2024-06-27 23:56:47,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:56:47,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:56:47,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:56:49,420 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 23:56:49,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:56:49,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280165473] [2024-06-27 23:56:49,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280165473] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:56:49,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:56:49,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:56:49,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705186629] [2024-06-27 23:56:49,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:56:49,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:56:49,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:56:49,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:56:49,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:56:49,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:56:49,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 564 places, 430 transitions, 5425 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:56:49,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:56:49,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:56:49,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:56:50,213 INFO L124 PetriNetUnfolderBase]: 1024/1939 cut-off events. [2024-06-27 23:56:50,213 INFO L125 PetriNetUnfolderBase]: For 348301/348301 co-relation queries the response was YES. [2024-06-27 23:56:50,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14074 conditions, 1939 events. 1024/1939 cut-off events. For 348301/348301 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 12288 event pairs, 175 based on Foata normal form. 2/1941 useless extension candidates. Maximal degree in co-relation 13866. Up to 1596 conditions per place. [2024-06-27 23:56:50,242 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 317 selfloop transitions, 125 changer transitions 0/444 dead transitions. [2024-06-27 23:56:50,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 573 places, 444 transitions, 6357 flow [2024-06-27 23:56:50,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:56:50,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:56:50,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-27 23:56:50,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3935483870967742 [2024-06-27 23:56:50,243 INFO L175 Difference]: Start difference. First operand has 564 places, 430 transitions, 5425 flow. Second operand 10 states and 122 transitions. [2024-06-27 23:56:50,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 573 places, 444 transitions, 6357 flow [2024-06-27 23:56:52,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 565 places, 444 transitions, 6133 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-27 23:56:52,187 INFO L231 Difference]: Finished difference. Result has 566 places, 431 transitions, 5475 flow [2024-06-27 23:56:52,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5201, PETRI_DIFFERENCE_MINUEND_PLACES=556, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5475, PETRI_PLACES=566, PETRI_TRANSITIONS=431} [2024-06-27 23:56:52,187 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 536 predicate places. [2024-06-27 23:56:52,187 INFO L495 AbstractCegarLoop]: Abstraction has has 566 places, 431 transitions, 5475 flow [2024-06-27 23:56:52,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:56:52,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:56:52,188 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 23:56:52,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-27 23:56:52,188 INFO L420 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:56:52,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:56:52,189 INFO L85 PathProgramCache]: Analyzing trace with hash 668275343, now seen corresponding path program 15 times [2024-06-27 23:56:52,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:56:52,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373052020] [2024-06-27 23:56:52,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:56:52,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:56:52,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:56:53,731 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 23:56:53,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:56:53,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373052020] [2024-06-27 23:56:53,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373052020] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:56:53,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:56:53,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:56:53,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960476778] [2024-06-27 23:56:53,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:56:53,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:56:53,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:56:53,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:56:53,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:56:53,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:56:53,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 566 places, 431 transitions, 5475 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:56:53,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:56:53,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:56:53,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:56:54,506 INFO L124 PetriNetUnfolderBase]: 1028/1947 cut-off events. [2024-06-27 23:56:54,506 INFO L125 PetriNetUnfolderBase]: For 352919/352919 co-relation queries the response was YES. [2024-06-27 23:56:54,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14177 conditions, 1947 events. 1028/1947 cut-off events. For 352919/352919 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 12365 event pairs, 173 based on Foata normal form. 2/1949 useless extension candidates. Maximal degree in co-relation 13968. Up to 1574 conditions per place. [2024-06-27 23:56:54,535 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 338 selfloop transitions, 107 changer transitions 0/447 dead transitions. [2024-06-27 23:56:54,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 575 places, 447 transitions, 6426 flow [2024-06-27 23:56:54,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:56:54,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:56:54,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-27 23:56:54,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3967741935483871 [2024-06-27 23:56:54,536 INFO L175 Difference]: Start difference. First operand has 566 places, 431 transitions, 5475 flow. Second operand 10 states and 123 transitions. [2024-06-27 23:56:54,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 575 places, 447 transitions, 6426 flow [2024-06-27 23:56:56,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 567 places, 447 transitions, 6164 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-27 23:56:56,420 INFO L231 Difference]: Finished difference. Result has 568 places, 432 transitions, 5454 flow [2024-06-27 23:56:56,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5213, PETRI_DIFFERENCE_MINUEND_PLACES=558, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5454, PETRI_PLACES=568, PETRI_TRANSITIONS=432} [2024-06-27 23:56:56,421 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 538 predicate places. [2024-06-27 23:56:56,421 INFO L495 AbstractCegarLoop]: Abstraction has has 568 places, 432 transitions, 5454 flow [2024-06-27 23:56:56,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:56:56,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:56:56,421 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:56:56,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-27 23:56:56,422 INFO L420 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:56:56,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:56:56,422 INFO L85 PathProgramCache]: Analyzing trace with hash 675899979, now seen corresponding path program 2 times [2024-06-27 23:56:56,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:56:56,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259539998] [2024-06-27 23:56:56,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:56:56,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:56:56,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:56:57,661 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 23:56:57,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:56:57,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259539998] [2024-06-27 23:56:57,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259539998] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:56:57,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:56:57,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:56:57,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940688181] [2024-06-27 23:56:57,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:56:57,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:56:57,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:56:57,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:56:57,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:56:57,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:56:57,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 568 places, 432 transitions, 5454 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:56:57,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:56:57,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:56:57,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:56:58,459 INFO L124 PetriNetUnfolderBase]: 1015/1924 cut-off events. [2024-06-27 23:56:58,459 INFO L125 PetriNetUnfolderBase]: For 334607/334607 co-relation queries the response was YES. [2024-06-27 23:56:58,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12424 conditions, 1924 events. 1015/1924 cut-off events. For 334607/334607 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 12249 event pairs, 160 based on Foata normal form. 10/1934 useless extension candidates. Maximal degree in co-relation 12214. Up to 1656 conditions per place. [2024-06-27 23:56:58,489 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 342 selfloop transitions, 94 changer transitions 13/451 dead transitions. [2024-06-27 23:56:58,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 578 places, 451 transitions, 6512 flow [2024-06-27 23:56:58,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:56:58,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:56:58,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-27 23:56:58,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39002932551319647 [2024-06-27 23:56:58,490 INFO L175 Difference]: Start difference. First operand has 568 places, 432 transitions, 5454 flow. Second operand 11 states and 133 transitions. [2024-06-27 23:56:58,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 578 places, 451 transitions, 6512 flow [2024-06-27 23:56:59,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 570 places, 451 transitions, 6285 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-27 23:56:59,784 INFO L231 Difference]: Finished difference. Result has 571 places, 428 transitions, 5383 flow [2024-06-27 23:56:59,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5227, PETRI_DIFFERENCE_MINUEND_PLACES=560, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5383, PETRI_PLACES=571, PETRI_TRANSITIONS=428} [2024-06-27 23:56:59,784 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 541 predicate places. [2024-06-27 23:56:59,785 INFO L495 AbstractCegarLoop]: Abstraction has has 571 places, 428 transitions, 5383 flow [2024-06-27 23:56:59,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:56:59,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:56:59,785 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 23:56:59,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-27 23:56:59,785 INFO L420 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:56:59,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:56:59,786 INFO L85 PathProgramCache]: Analyzing trace with hash 474543323, now seen corresponding path program 16 times [2024-06-27 23:56:59,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:56:59,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816300935] [2024-06-27 23:56:59,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:56:59,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:56:59,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:57:01,285 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 23:57:01,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:57:01,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816300935] [2024-06-27 23:57:01,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816300935] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:57:01,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:57:01,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:57:01,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729737002] [2024-06-27 23:57:01,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:57:01,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:57:01,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:57:01,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:57:01,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:57:01,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:57:01,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 571 places, 428 transitions, 5383 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:57:01,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:57:01,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:57:01,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:57:02,007 INFO L124 PetriNetUnfolderBase]: 994/1881 cut-off events. [2024-06-27 23:57:02,007 INFO L125 PetriNetUnfolderBase]: For 238315/238315 co-relation queries the response was YES. [2024-06-27 23:57:02,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12093 conditions, 1881 events. 994/1881 cut-off events. For 238315/238315 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 11950 event pairs, 158 based on Foata normal form. 2/1883 useless extension candidates. Maximal degree in co-relation 11882. Up to 1538 conditions per place. [2024-06-27 23:57:02,034 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 350 selfloop transitions, 92 changer transitions 0/444 dead transitions. [2024-06-27 23:57:02,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 574 places, 444 transitions, 6341 flow [2024-06-27 23:57:02,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:57:02,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:57:02,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-27 23:57:02,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-27 23:57:02,035 INFO L175 Difference]: Start difference. First operand has 571 places, 428 transitions, 5383 flow. Second operand 10 states and 124 transitions. [2024-06-27 23:57:02,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 574 places, 444 transitions, 6341 flow [2024-06-27 23:57:03,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 565 places, 444 transitions, 6133 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-27 23:57:03,254 INFO L231 Difference]: Finished difference. Result has 566 places, 429 transitions, 5391 flow [2024-06-27 23:57:03,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5179, PETRI_DIFFERENCE_MINUEND_PLACES=556, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5391, PETRI_PLACES=566, PETRI_TRANSITIONS=429} [2024-06-27 23:57:03,255 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 536 predicate places. [2024-06-27 23:57:03,255 INFO L495 AbstractCegarLoop]: Abstraction has has 566 places, 429 transitions, 5391 flow [2024-06-27 23:57:03,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:57:03,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:57:03,255 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 23:57:03,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-27 23:57:03,256 INFO L420 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:57:03,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:57:03,256 INFO L85 PathProgramCache]: Analyzing trace with hash 468829403, now seen corresponding path program 17 times [2024-06-27 23:57:03,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:57:03,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357000440] [2024-06-27 23:57:03,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:57:03,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:57:03,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:57:04,729 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 23:57:04,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:57:04,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357000440] [2024-06-27 23:57:04,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357000440] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:57:04,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:57:04,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:57:04,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284681267] [2024-06-27 23:57:04,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:57:04,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:57:04,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:57:04,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:57:04,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:57:04,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:57:04,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 566 places, 429 transitions, 5391 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:57:04,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:57:04,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:57:04,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:57:05,350 INFO L124 PetriNetUnfolderBase]: 998/1889 cut-off events. [2024-06-27 23:57:05,350 INFO L125 PetriNetUnfolderBase]: For 236136/236136 co-relation queries the response was YES. [2024-06-27 23:57:05,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12111 conditions, 1889 events. 998/1889 cut-off events. For 236136/236136 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 11990 event pairs, 154 based on Foata normal form. 2/1891 useless extension candidates. Maximal degree in co-relation 11902. Up to 1443 conditions per place. [2024-06-27 23:57:05,377 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 351 selfloop transitions, 93 changer transitions 0/447 dead transitions. [2024-06-27 23:57:05,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 575 places, 447 transitions, 6668 flow [2024-06-27 23:57:05,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:57:05,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:57:05,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2024-06-27 23:57:05,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.432258064516129 [2024-06-27 23:57:05,378 INFO L175 Difference]: Start difference. First operand has 566 places, 429 transitions, 5391 flow. Second operand 10 states and 134 transitions. [2024-06-27 23:57:05,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 575 places, 447 transitions, 6668 flow [2024-06-27 23:57:06,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 566 places, 447 transitions, 6456 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-27 23:57:06,574 INFO L231 Difference]: Finished difference. Result has 567 places, 430 transitions, 5396 flow [2024-06-27 23:57:06,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5181, PETRI_DIFFERENCE_MINUEND_PLACES=557, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5396, PETRI_PLACES=567, PETRI_TRANSITIONS=430} [2024-06-27 23:57:06,574 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 537 predicate places. [2024-06-27 23:57:06,574 INFO L495 AbstractCegarLoop]: Abstraction has has 567 places, 430 transitions, 5396 flow [2024-06-27 23:57:06,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:57:06,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:57:06,575 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 23:57:06,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-27 23:57:06,575 INFO L420 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:57:06,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:57:06,575 INFO L85 PathProgramCache]: Analyzing trace with hash 474335933, now seen corresponding path program 18 times [2024-06-27 23:57:06,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:57:06,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001590589] [2024-06-27 23:57:06,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:57:06,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:57:06,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:57:08,116 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 23:57:08,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:57:08,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001590589] [2024-06-27 23:57:08,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001590589] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:57:08,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:57:08,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:57:08,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313053954] [2024-06-27 23:57:08,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:57:08,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:57:08,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:57:08,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:57:08,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:57:08,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:57:08,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 567 places, 430 transitions, 5396 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:57:08,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:57:08,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:57:08,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:57:08,883 INFO L124 PetriNetUnfolderBase]: 995/1884 cut-off events. [2024-06-27 23:57:08,883 INFO L125 PetriNetUnfolderBase]: For 210512/210512 co-relation queries the response was YES. [2024-06-27 23:57:08,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11726 conditions, 1884 events. 995/1884 cut-off events. For 210512/210512 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 11995 event pairs, 157 based on Foata normal form. 2/1886 useless extension candidates. Maximal degree in co-relation 11516. Up to 1517 conditions per place. [2024-06-27 23:57:08,909 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 353 selfloop transitions, 91 changer transitions 0/446 dead transitions. [2024-06-27 23:57:08,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 576 places, 446 transitions, 6334 flow [2024-06-27 23:57:08,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:57:08,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:57:08,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-27 23:57:08,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-27 23:57:08,910 INFO L175 Difference]: Start difference. First operand has 567 places, 430 transitions, 5396 flow. Second operand 10 states and 125 transitions. [2024-06-27 23:57:08,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 576 places, 446 transitions, 6334 flow [2024-06-27 23:57:10,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 567 places, 446 transitions, 6059 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-27 23:57:10,014 INFO L231 Difference]: Finished difference. Result has 568 places, 430 transitions, 5308 flow [2024-06-27 23:57:10,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5121, PETRI_DIFFERENCE_MINUEND_PLACES=558, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5308, PETRI_PLACES=568, PETRI_TRANSITIONS=430} [2024-06-27 23:57:10,014 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 538 predicate places. [2024-06-27 23:57:10,014 INFO L495 AbstractCegarLoop]: Abstraction has has 568 places, 430 transitions, 5308 flow [2024-06-27 23:57:10,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:57:10,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:57:10,014 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 23:57:10,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-27 23:57:10,016 INFO L420 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:57:10,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:57:10,016 INFO L85 PathProgramCache]: Analyzing trace with hash -843333127, now seen corresponding path program 3 times [2024-06-27 23:57:10,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:57:10,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427729934] [2024-06-27 23:57:10,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:57:10,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:57:10,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:57:11,543 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 23:57:11,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:57:11,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427729934] [2024-06-27 23:57:11,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427729934] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:57:11,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:57:11,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:57:11,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10143298] [2024-06-27 23:57:11,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:57:11,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:57:11,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:57:11,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:57:11,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:57:11,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:57:11,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 568 places, 430 transitions, 5308 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states 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 23:57:11,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:57:11,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:57:11,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:57:12,374 INFO L124 PetriNetUnfolderBase]: 1036/1971 cut-off events. [2024-06-27 23:57:12,374 INFO L125 PetriNetUnfolderBase]: For 410667/410667 co-relation queries the response was YES. [2024-06-27 23:57:12,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13710 conditions, 1971 events. 1036/1971 cut-off events. For 410667/410667 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 12522 event pairs, 373 based on Foata normal form. 8/1979 useless extension candidates. Maximal degree in co-relation 13500. Up to 1779 conditions per place. [2024-06-27 23:57:12,403 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 420 selfloop transitions, 23 changer transitions 10/455 dead transitions. [2024-06-27 23:57:12,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 581 places, 455 transitions, 7084 flow [2024-06-27 23:57:12,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-27 23:57:12,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-27 23:57:12,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 137 transitions. [2024-06-27 23:57:12,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.315668202764977 [2024-06-27 23:57:12,404 INFO L175 Difference]: Start difference. First operand has 568 places, 430 transitions, 5308 flow. Second operand 14 states and 137 transitions. [2024-06-27 23:57:12,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 581 places, 455 transitions, 7084 flow [2024-06-27 23:57:14,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 572 places, 455 transitions, 6881 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-27 23:57:14,241 INFO L231 Difference]: Finished difference. Result has 573 places, 427 transitions, 5135 flow [2024-06-27 23:57:14,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5105, PETRI_DIFFERENCE_MINUEND_PLACES=559, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=5135, PETRI_PLACES=573, PETRI_TRANSITIONS=427} [2024-06-27 23:57:14,242 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 543 predicate places. [2024-06-27 23:57:14,242 INFO L495 AbstractCegarLoop]: Abstraction has has 573 places, 427 transitions, 5135 flow [2024-06-27 23:57:14,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states 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 23:57:14,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:57:14,243 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 23:57:14,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-27 23:57:14,243 INFO L420 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:57:14,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:57:14,243 INFO L85 PathProgramCache]: Analyzing trace with hash -854384317, now seen corresponding path program 4 times [2024-06-27 23:57:14,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:57:14,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066683426] [2024-06-27 23:57:14,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:57:14,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:57:14,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:57:15,947 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 23:57:15,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:57:15,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066683426] [2024-06-27 23:57:15,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066683426] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:57:15,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:57:15,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 23:57:15,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721232217] [2024-06-27 23:57:15,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:57:15,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 23:57:15,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:57:15,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 23:57:15,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 23:57:16,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:57:16,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 573 places, 427 transitions, 5135 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:57:16,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:57:16,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:57:16,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:57:16,831 INFO L124 PetriNetUnfolderBase]: 1030/1961 cut-off events. [2024-06-27 23:57:16,831 INFO L125 PetriNetUnfolderBase]: For 439637/439637 co-relation queries the response was YES. [2024-06-27 23:57:16,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13559 conditions, 1961 events. 1030/1961 cut-off events. For 439637/439637 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 12440 event pairs, 383 based on Foata normal form. 10/1971 useless extension candidates. Maximal degree in co-relation 13347. Up to 1866 conditions per place. [2024-06-27 23:57:16,859 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 411 selfloop transitions, 22 changer transitions 11/446 dead transitions. [2024-06-27 23:57:16,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 582 places, 446 transitions, 6497 flow [2024-06-27 23:57:16,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-27 23:57:16,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-27 23:57:16,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 133 transitions. [2024-06-27 23:57:16,860 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3064516129032258 [2024-06-27 23:57:16,860 INFO L175 Difference]: Start difference. First operand has 573 places, 427 transitions, 5135 flow. Second operand 14 states and 133 transitions. [2024-06-27 23:57:16,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 582 places, 446 transitions, 6497 flow [2024-06-27 23:57:18,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 569 places, 446 transitions, 6446 flow, removed 6 selfloop flow, removed 13 redundant places. [2024-06-27 23:57:18,644 INFO L231 Difference]: Finished difference. Result has 570 places, 424 transitions, 5117 flow [2024-06-27 23:57:18,644 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5090, PETRI_DIFFERENCE_MINUEND_PLACES=556, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=5117, PETRI_PLACES=570, PETRI_TRANSITIONS=424} [2024-06-27 23:57:18,644 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 540 predicate places. [2024-06-27 23:57:18,644 INFO L495 AbstractCegarLoop]: Abstraction has has 570 places, 424 transitions, 5117 flow [2024-06-27 23:57:18,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:57:18,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:57:18,644 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 23:57:18,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2024-06-27 23:57:18,645 INFO L420 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:57:18,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:57:18,645 INFO L85 PathProgramCache]: Analyzing trace with hash -854375017, now seen corresponding path program 5 times [2024-06-27 23:57:18,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:57:18,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428066773] [2024-06-27 23:57:18,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:57:18,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:57:18,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:57:20,227 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 23:57:20,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:57:20,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428066773] [2024-06-27 23:57:20,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428066773] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:57:20,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:57:20,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:57:20,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948515207] [2024-06-27 23:57:20,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:57:20,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:57:20,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:57:20,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:57:20,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:57:20,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:57:20,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 570 places, 424 transitions, 5117 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states 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 23:57:20,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:57:20,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:57:20,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:57:21,129 INFO L124 PetriNetUnfolderBase]: 1018/1941 cut-off events. [2024-06-27 23:57:21,129 INFO L125 PetriNetUnfolderBase]: For 401522/401522 co-relation queries the response was YES. [2024-06-27 23:57:21,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13395 conditions, 1941 events. 1018/1941 cut-off events. For 401522/401522 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 12306 event pairs, 377 based on Foata normal form. 8/1949 useless extension candidates. Maximal degree in co-relation 13185. Up to 1856 conditions per place. [2024-06-27 23:57:21,157 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 409 selfloop transitions, 19 changer transitions 12/442 dead transitions. [2024-06-27 23:57:21,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 580 places, 442 transitions, 6419 flow [2024-06-27 23:57:21,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-27 23:57:21,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-27 23:57:21,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 130 transitions. [2024-06-27 23:57:21,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2995391705069124 [2024-06-27 23:57:21,158 INFO L175 Difference]: Start difference. First operand has 570 places, 424 transitions, 5117 flow. Second operand 14 states and 130 transitions. [2024-06-27 23:57:21,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 580 places, 442 transitions, 6419 flow [2024-06-27 23:57:23,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 567 places, 442 transitions, 6367 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-27 23:57:23,186 INFO L231 Difference]: Finished difference. Result has 568 places, 420 transitions, 5081 flow [2024-06-27 23:57:23,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5069, PETRI_DIFFERENCE_MINUEND_PLACES=554, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=5081, PETRI_PLACES=568, PETRI_TRANSITIONS=420} [2024-06-27 23:57:23,187 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 538 predicate places. [2024-06-27 23:57:23,187 INFO L495 AbstractCegarLoop]: Abstraction has has 568 places, 420 transitions, 5081 flow [2024-06-27 23:57:23,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states 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 23:57:23,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:57:23,187 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 23:57:23,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2024-06-27 23:57:23,187 INFO L420 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:57:23,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:57:23,187 INFO L85 PathProgramCache]: Analyzing trace with hash 2135003459, now seen corresponding path program 6 times [2024-06-27 23:57:23,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:57:23,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109240618] [2024-06-27 23:57:23,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:57:23,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:57:23,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:57:24,497 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 23:57:24,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:57:24,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109240618] [2024-06-27 23:57:24,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109240618] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:57:24,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:57:24,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:57:24,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97399455] [2024-06-27 23:57:24,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:57:24,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:57:24,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:57:24,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:57:24,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:57:24,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:57:24,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 568 places, 420 transitions, 5081 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:57:24,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:57:24,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:57:24,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:57:25,165 INFO L124 PetriNetUnfolderBase]: 1002/1905 cut-off events. [2024-06-27 23:57:25,165 INFO L125 PetriNetUnfolderBase]: For 325638/325638 co-relation queries the response was YES. [2024-06-27 23:57:25,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13192 conditions, 1905 events. 1002/1905 cut-off events. For 325638/325638 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 12023 event pairs, 186 based on Foata normal form. 2/1907 useless extension candidates. Maximal degree in co-relation 12983. Up to 1559 conditions per place. [2024-06-27 23:57:25,189 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 330 selfloop transitions, 103 changer transitions 0/435 dead transitions. [2024-06-27 23:57:25,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 572 places, 435 transitions, 6037 flow [2024-06-27 23:57:25,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:57:25,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:57:25,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-27 23:57:25,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39002932551319647 [2024-06-27 23:57:25,190 INFO L175 Difference]: Start difference. First operand has 568 places, 420 transitions, 5081 flow. Second operand 11 states and 133 transitions. [2024-06-27 23:57:25,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 572 places, 435 transitions, 6037 flow [2024-06-27 23:57:27,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 558 places, 435 transitions, 5987 flow, removed 6 selfloop flow, removed 14 redundant places. [2024-06-27 23:57:27,043 INFO L231 Difference]: Finished difference. Result has 559 places, 423 transitions, 5307 flow [2024-06-27 23:57:27,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5031, PETRI_DIFFERENCE_MINUEND_PLACES=548, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5307, PETRI_PLACES=559, PETRI_TRANSITIONS=423} [2024-06-27 23:57:27,043 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 529 predicate places. [2024-06-27 23:57:27,043 INFO L495 AbstractCegarLoop]: Abstraction has has 559 places, 423 transitions, 5307 flow [2024-06-27 23:57:27,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:57:27,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:57:27,043 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 23:57:27,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2024-06-27 23:57:27,044 INFO L420 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:57:27,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:57:27,044 INFO L85 PathProgramCache]: Analyzing trace with hash 363416199, now seen corresponding path program 7 times [2024-06-27 23:57:27,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:57:27,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413877832] [2024-06-27 23:57:27,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:57:27,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:57:27,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:57:28,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:57:28,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:57:28,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413877832] [2024-06-27 23:57:28,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413877832] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:57:28,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:57:28,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:57:28,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729097483] [2024-06-27 23:57:28,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:57:28,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:57:28,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:57:28,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:57:28,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:57:28,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:57:28,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 559 places, 423 transitions, 5307 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:57:28,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:57:28,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:57:28,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:57:28,974 INFO L124 PetriNetUnfolderBase]: 1041/1987 cut-off events. [2024-06-27 23:57:28,974 INFO L125 PetriNetUnfolderBase]: For 489739/489739 co-relation queries the response was YES. [2024-06-27 23:57:28,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15231 conditions, 1987 events. 1041/1987 cut-off events. For 489739/489739 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 12563 event pairs, 193 based on Foata normal form. 8/1995 useless extension candidates. Maximal degree in co-relation 15027. Up to 1318 conditions per place. [2024-06-27 23:57:29,003 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 316 selfloop transitions, 121 changer transitions 6/446 dead transitions. [2024-06-27 23:57:29,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 569 places, 446 transitions, 7035 flow [2024-06-27 23:57:29,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:57:29,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:57:29,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 156 transitions. [2024-06-27 23:57:29,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4574780058651026 [2024-06-27 23:57:29,004 INFO L175 Difference]: Start difference. First operand has 559 places, 423 transitions, 5307 flow. Second operand 11 states and 156 transitions. [2024-06-27 23:57:29,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 569 places, 446 transitions, 7035 flow [2024-06-27 23:57:31,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 563 places, 446 transitions, 6862 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-27 23:57:31,715 INFO L231 Difference]: Finished difference. Result has 565 places, 424 transitions, 5450 flow [2024-06-27 23:57:31,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5134, PETRI_DIFFERENCE_MINUEND_PLACES=553, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5450, PETRI_PLACES=565, PETRI_TRANSITIONS=424} [2024-06-27 23:57:31,715 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 535 predicate places. [2024-06-27 23:57:31,715 INFO L495 AbstractCegarLoop]: Abstraction has has 565 places, 424 transitions, 5450 flow [2024-06-27 23:57:31,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:57:31,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:57:31,715 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 23:57:31,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2024-06-27 23:57:31,715 INFO L420 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:57:31,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:57:31,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1168350736, now seen corresponding path program 2 times [2024-06-27 23:57:31,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:57:31,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067683881] [2024-06-27 23:57:31,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:57:31,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:57:31,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:57:33,230 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 23:57:33,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:57:33,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067683881] [2024-06-27 23:57:33,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067683881] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:57:33,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:57:33,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:57:33,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88903660] [2024-06-27 23:57:33,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:57:33,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:57:33,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:57:33,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:57:33,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:57:33,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:57:33,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 565 places, 424 transitions, 5450 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states 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 23:57:33,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:57:33,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:57:33,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:57:34,049 INFO L124 PetriNetUnfolderBase]: 1023/1952 cut-off events. [2024-06-27 23:57:34,049 INFO L125 PetriNetUnfolderBase]: For 398300/398300 co-relation queries the response was YES. [2024-06-27 23:57:34,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15053 conditions, 1952 events. 1023/1952 cut-off events. For 398300/398300 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 12354 event pairs, 394 based on Foata normal form. 1/1953 useless extension candidates. Maximal degree in co-relation 14845. Up to 1912 conditions per place. [2024-06-27 23:57:34,074 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 413 selfloop transitions, 20 changer transitions 0/435 dead transitions. [2024-06-27 23:57:34,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 573 places, 435 transitions, 6396 flow [2024-06-27 23:57:34,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:57:34,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:57:34,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 97 transitions. [2024-06-27 23:57:34,075 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31290322580645163 [2024-06-27 23:57:34,075 INFO L175 Difference]: Start difference. First operand has 565 places, 424 transitions, 5450 flow. Second operand 10 states and 97 transitions. [2024-06-27 23:57:34,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 573 places, 435 transitions, 6396 flow [2024-06-27 23:57:36,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 565 places, 435 transitions, 6171 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-27 23:57:36,469 INFO L231 Difference]: Finished difference. Result has 566 places, 426 transitions, 5337 flow [2024-06-27 23:57:36,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5225, PETRI_DIFFERENCE_MINUEND_PLACES=556, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=404, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5337, PETRI_PLACES=566, PETRI_TRANSITIONS=426} [2024-06-27 23:57:36,470 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 536 predicate places. [2024-06-27 23:57:36,470 INFO L495 AbstractCegarLoop]: Abstraction has has 566 places, 426 transitions, 5337 flow [2024-06-27 23:57:36,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states 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 23:57:36,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:57:36,470 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 23:57:36,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2024-06-27 23:57:36,470 INFO L420 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:57:36,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:57:36,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1933439413, now seen corresponding path program 19 times [2024-06-27 23:57:36,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:57:36,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447663760] [2024-06-27 23:57:36,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:57:36,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:57:36,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:57:37,989 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 23:57:37,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:57:37,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447663760] [2024-06-27 23:57:37,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447663760] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:57:37,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:57:37,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:57:37,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787183205] [2024-06-27 23:57:37,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:57:37,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:57:37,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:57:37,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:57:37,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:57:38,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:57:38,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 566 places, 426 transitions, 5337 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:57:38,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:57:38,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:57:38,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:57:38,702 INFO L124 PetriNetUnfolderBase]: 1034/1973 cut-off events. [2024-06-27 23:57:38,702 INFO L125 PetriNetUnfolderBase]: For 439937/439937 co-relation queries the response was YES. [2024-06-27 23:57:38,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15371 conditions, 1973 events. 1034/1973 cut-off events. For 439937/439937 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 12473 event pairs, 194 based on Foata normal form. 2/1975 useless extension candidates. Maximal degree in co-relation 15162. Up to 1430 conditions per place. [2024-06-27 23:57:38,731 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 330 selfloop transitions, 109 changer transitions 0/441 dead transitions. [2024-06-27 23:57:38,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 575 places, 441 transitions, 6601 flow [2024-06-27 23:57:38,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:57:38,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:57:38,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-27 23:57:38,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4258064516129032 [2024-06-27 23:57:38,732 INFO L175 Difference]: Start difference. First operand has 566 places, 426 transitions, 5337 flow. Second operand 10 states and 132 transitions. [2024-06-27 23:57:38,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 575 places, 441 transitions, 6601 flow [2024-06-27 23:57:41,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 566 places, 441 transitions, 6508 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-27 23:57:41,158 INFO L231 Difference]: Finished difference. Result has 567 places, 428 transitions, 5514 flow [2024-06-27 23:57:41,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5246, PETRI_DIFFERENCE_MINUEND_PLACES=557, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5514, PETRI_PLACES=567, PETRI_TRANSITIONS=428} [2024-06-27 23:57:41,159 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 537 predicate places. [2024-06-27 23:57:41,159 INFO L495 AbstractCegarLoop]: Abstraction has has 567 places, 428 transitions, 5514 flow [2024-06-27 23:57:41,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:57:41,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:57:41,159 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 23:57:41,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2024-06-27 23:57:41,159 INFO L420 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:57:41,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:57:41,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1168350953, now seen corresponding path program 20 times [2024-06-27 23:57:41,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:57:41,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81814657] [2024-06-27 23:57:41,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:57:41,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:57:41,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:57:42,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:57:42,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:57:42,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81814657] [2024-06-27 23:57:42,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81814657] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:57:42,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:57:42,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:57:42,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501547251] [2024-06-27 23:57:42,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:57:42,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:57:42,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:57:42,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:57:42,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:57:42,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:57:42,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 567 places, 428 transitions, 5514 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states 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 23:57:42,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:57:42,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:57:42,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:57:43,691 INFO L124 PetriNetUnfolderBase]: 1038/1981 cut-off events. [2024-06-27 23:57:43,691 INFO L125 PetriNetUnfolderBase]: For 437723/437723 co-relation queries the response was YES. [2024-06-27 23:57:43,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15580 conditions, 1981 events. 1038/1981 cut-off events. For 437723/437723 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 12531 event pairs, 397 based on Foata normal form. 2/1983 useless extension candidates. Maximal degree in co-relation 15372. Up to 1941 conditions per place. [2024-06-27 23:57:43,720 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 420 selfloop transitions, 18 changer transitions 0/440 dead transitions. [2024-06-27 23:57:43,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 577 places, 440 transitions, 6438 flow [2024-06-27 23:57:43,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:57:43,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:57:43,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 103 transitions. [2024-06-27 23:57:43,721 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3020527859237537 [2024-06-27 23:57:43,721 INFO L175 Difference]: Start difference. First operand has 567 places, 428 transitions, 5514 flow. Second operand 11 states and 103 transitions. [2024-06-27 23:57:43,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 577 places, 440 transitions, 6438 flow [2024-06-27 23:57:45,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 571 places, 440 transitions, 6280 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-27 23:57:45,921 INFO L231 Difference]: Finished difference. Result has 572 places, 429 transitions, 5422 flow [2024-06-27 23:57:45,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5356, PETRI_DIFFERENCE_MINUEND_PLACES=561, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5422, PETRI_PLACES=572, PETRI_TRANSITIONS=429} [2024-06-27 23:57:45,921 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 542 predicate places. [2024-06-27 23:57:45,921 INFO L495 AbstractCegarLoop]: Abstraction has has 572 places, 429 transitions, 5422 flow [2024-06-27 23:57:45,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states 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 23:57:45,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:57:45,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:57:45,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2024-06-27 23:57:45,922 INFO L420 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:57:45,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:57:45,922 INFO L85 PathProgramCache]: Analyzing trace with hash -742834733, now seen corresponding path program 21 times [2024-06-27 23:57:45,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:57:45,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059314003] [2024-06-27 23:57:45,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:57:45,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:57:45,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:57:47,863 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 23:57:47,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:57:47,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059314003] [2024-06-27 23:57:47,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059314003] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:57:47,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:57:47,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:57:47,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454501950] [2024-06-27 23:57:47,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:57:47,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:57:47,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:57:47,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:57:47,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:57:47,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:57:47,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 572 places, 429 transitions, 5422 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:57:47,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:57:47,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:57:47,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:57:48,709 INFO L124 PetriNetUnfolderBase]: 1049/2002 cut-off events. [2024-06-27 23:57:48,710 INFO L125 PetriNetUnfolderBase]: For 469522/469522 co-relation queries the response was YES. [2024-06-27 23:57:48,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16025 conditions, 2002 events. 1049/2002 cut-off events. For 469522/469522 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 12691 event pairs, 200 based on Foata normal form. 2/2004 useless extension candidates. Maximal degree in co-relation 15814. Up to 1441 conditions per place. [2024-06-27 23:57:48,739 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 329 selfloop transitions, 114 changer transitions 0/445 dead transitions. [2024-06-27 23:57:48,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 581 places, 445 transitions, 6706 flow [2024-06-27 23:57:48,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:57:48,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:57:48,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-27 23:57:48,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4161290322580645 [2024-06-27 23:57:48,740 INFO L175 Difference]: Start difference. First operand has 572 places, 429 transitions, 5422 flow. Second operand 10 states and 129 transitions. [2024-06-27 23:57:48,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 581 places, 445 transitions, 6706 flow [2024-06-27 23:57:51,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 572 places, 445 transitions, 6650 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-27 23:57:51,241 INFO L231 Difference]: Finished difference. Result has 573 places, 431 transitions, 5652 flow [2024-06-27 23:57:51,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5366, PETRI_DIFFERENCE_MINUEND_PLACES=563, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5652, PETRI_PLACES=573, PETRI_TRANSITIONS=431} [2024-06-27 23:57:51,241 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 543 predicate places. [2024-06-27 23:57:51,241 INFO L495 AbstractCegarLoop]: Abstraction has has 573 places, 431 transitions, 5652 flow [2024-06-27 23:57:51,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:57:51,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:57:51,241 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 23:57:51,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2024-06-27 23:57:51,242 INFO L420 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:57:51,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:57:51,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1423662171, now seen corresponding path program 22 times [2024-06-27 23:57:51,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:57:51,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955548822] [2024-06-27 23:57:51,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:57:51,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:57:51,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:57:52,777 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 23:57:52,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:57:52,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955548822] [2024-06-27 23:57:52,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955548822] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:57:52,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:57:52,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:57:52,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868004838] [2024-06-27 23:57:52,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:57:52,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:57:52,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:57:52,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:57:52,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:57:52,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:57:52,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 573 places, 431 transitions, 5652 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:57:52,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:57:52,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:57:52,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:57:53,455 INFO L124 PetriNetUnfolderBase]: 1053/2010 cut-off events. [2024-06-27 23:57:53,455 INFO L125 PetriNetUnfolderBase]: For 475879/475879 co-relation queries the response was YES. [2024-06-27 23:57:53,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16303 conditions, 2010 events. 1053/2010 cut-off events. For 475879/475879 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 12739 event pairs, 204 based on Foata normal form. 2/2012 useless extension candidates. Maximal degree in co-relation 16092. Up to 1482 conditions per place. [2024-06-27 23:57:53,484 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 290 selfloop transitions, 151 changer transitions 0/443 dead transitions. [2024-06-27 23:57:53,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 582 places, 443 transitions, 6586 flow [2024-06-27 23:57:53,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:57:53,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:57:53,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-27 23:57:53,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3967741935483871 [2024-06-27 23:57:53,485 INFO L175 Difference]: Start difference. First operand has 573 places, 431 transitions, 5652 flow. Second operand 10 states and 123 transitions. [2024-06-27 23:57:53,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 582 places, 443 transitions, 6586 flow [2024-06-27 23:57:55,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 576 places, 443 transitions, 6412 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-27 23:57:55,989 INFO L231 Difference]: Finished difference. Result has 577 places, 432 transitions, 5815 flow [2024-06-27 23:57:55,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5478, PETRI_DIFFERENCE_MINUEND_PLACES=567, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5815, PETRI_PLACES=577, PETRI_TRANSITIONS=432} [2024-06-27 23:57:55,990 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 547 predicate places. [2024-06-27 23:57:55,990 INFO L495 AbstractCegarLoop]: Abstraction has has 577 places, 432 transitions, 5815 flow [2024-06-27 23:57:55,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:57:55,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:57:55,990 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 23:57:55,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2024-06-27 23:57:55,990 INFO L420 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:57:55,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:57:55,991 INFO L85 PathProgramCache]: Analyzing trace with hash -576728427, now seen corresponding path program 8 times [2024-06-27 23:57:55,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:57:55,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998880467] [2024-06-27 23:57:55,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:57:55,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:57:56,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:57:57,299 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 23:57:57,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:57:57,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998880467] [2024-06-27 23:57:57,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998880467] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:57:57,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:57:57,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:57:57,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657855654] [2024-06-27 23:57:57,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:57:57,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:57:57,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:57:57,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:57:57,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:57:57,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:57:57,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 577 places, 432 transitions, 5815 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:57:57,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:57:57,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:57:57,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:57:58,020 INFO L124 PetriNetUnfolderBase]: 1057/2018 cut-off events. [2024-06-27 23:57:58,020 INFO L125 PetriNetUnfolderBase]: For 483655/483655 co-relation queries the response was YES. [2024-06-27 23:57:58,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16593 conditions, 2018 events. 1057/2018 cut-off events. For 483655/483655 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 12804 event pairs, 201 based on Foata normal form. 2/2020 useless extension candidates. Maximal degree in co-relation 16380. Up to 1684 conditions per place. [2024-06-27 23:57:58,050 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 335 selfloop transitions, 110 changer transitions 0/447 dead transitions. [2024-06-27 23:57:58,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 587 places, 447 transitions, 6799 flow [2024-06-27 23:57:58,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:57:58,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:57:58,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-27 23:57:58,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39002932551319647 [2024-06-27 23:57:58,052 INFO L175 Difference]: Start difference. First operand has 577 places, 432 transitions, 5815 flow. Second operand 11 states and 133 transitions. [2024-06-27 23:57:58,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 587 places, 447 transitions, 6799 flow [2024-06-27 23:58:00,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 579 places, 447 transitions, 6474 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-27 23:58:00,690 INFO L231 Difference]: Finished difference. Result has 580 places, 435 transitions, 5784 flow [2024-06-27 23:58:00,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5490, PETRI_DIFFERENCE_MINUEND_PLACES=569, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5784, PETRI_PLACES=580, PETRI_TRANSITIONS=435} [2024-06-27 23:58:00,690 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 550 predicate places. [2024-06-27 23:58:00,690 INFO L495 AbstractCegarLoop]: Abstraction has has 580 places, 435 transitions, 5784 flow [2024-06-27 23:58:00,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:58:00,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:58:00,691 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 23:58:00,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2024-06-27 23:58:00,691 INFO L420 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:58:00,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:58:00,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1166894534, now seen corresponding path program 3 times [2024-06-27 23:58:00,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:58:00,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720401150] [2024-06-27 23:58:00,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:58:00,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:58:00,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:58:02,411 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 23:58:02,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:58:02,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720401150] [2024-06-27 23:58:02,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720401150] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:58:02,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:58:02,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:58:02,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500004992] [2024-06-27 23:58:02,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:58:02,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:58:02,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:58:02,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:58:02,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:58:02,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:58:02,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 580 places, 435 transitions, 5784 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states 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 23:58:02,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:58:02,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:58:02,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:58:03,248 INFO L124 PetriNetUnfolderBase]: 1055/2015 cut-off events. [2024-06-27 23:58:03,248 INFO L125 PetriNetUnfolderBase]: For 462846/462846 co-relation queries the response was YES. [2024-06-27 23:58:03,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16335 conditions, 2015 events. 1055/2015 cut-off events. For 462846/462846 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 12801 event pairs, 397 based on Foata normal form. 1/2016 useless extension candidates. Maximal degree in co-relation 16121. Up to 1969 conditions per place. [2024-06-27 23:58:03,277 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 420 selfloop transitions, 23 changer transitions 0/445 dead transitions. [2024-06-27 23:58:03,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 590 places, 445 transitions, 6692 flow [2024-06-27 23:58:03,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:58:03,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:58:03,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 106 transitions. [2024-06-27 23:58:03,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31085043988269795 [2024-06-27 23:58:03,278 INFO L175 Difference]: Start difference. First operand has 580 places, 435 transitions, 5784 flow. Second operand 11 states and 106 transitions. [2024-06-27 23:58:03,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 590 places, 445 transitions, 6692 flow [2024-06-27 23:58:05,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 584 places, 445 transitions, 6467 flow, removed 45 selfloop flow, removed 6 redundant places. [2024-06-27 23:58:05,887 INFO L231 Difference]: Finished difference. Result has 585 places, 435 transitions, 5611 flow [2024-06-27 23:58:05,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5559, PETRI_DIFFERENCE_MINUEND_PLACES=574, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5611, PETRI_PLACES=585, PETRI_TRANSITIONS=435} [2024-06-27 23:58:05,887 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 555 predicate places. [2024-06-27 23:58:05,887 INFO L495 AbstractCegarLoop]: Abstraction has has 585 places, 435 transitions, 5611 flow [2024-06-27 23:58:05,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states 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 23:58:05,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:58:05,888 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 23:58:05,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2024-06-27 23:58:05,888 INFO L420 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:58:05,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:58:05,888 INFO L85 PathProgramCache]: Analyzing trace with hash -584347483, now seen corresponding path program 23 times [2024-06-27 23:58:05,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:58:05,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912889202] [2024-06-27 23:58:05,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:58:05,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:58:05,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:58:07,739 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 23:58:07,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:58:07,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912889202] [2024-06-27 23:58:07,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912889202] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:58:07,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:58:07,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:58:07,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741882699] [2024-06-27 23:58:07,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:58:07,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:58:07,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:58:07,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:58:07,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:58:07,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:58:07,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 585 places, 435 transitions, 5611 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:58:07,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:58:07,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:58:07,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:58:08,581 INFO L124 PetriNetUnfolderBase]: 1067/2044 cut-off events. [2024-06-27 23:58:08,581 INFO L125 PetriNetUnfolderBase]: For 555727/555727 co-relation queries the response was YES. [2024-06-27 23:58:08,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16390 conditions, 2044 events. 1067/2044 cut-off events. For 555727/555727 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 12989 event pairs, 211 based on Foata normal form. 8/2052 useless extension candidates. Maximal degree in co-relation 16173. Up to 1484 conditions per place. [2024-06-27 23:58:08,611 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 313 selfloop transitions, 125 changer transitions 10/450 dead transitions. [2024-06-27 23:58:08,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 595 places, 450 transitions, 6587 flow [2024-06-27 23:58:08,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:58:08,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:58:08,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-27 23:58:08,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40762463343108507 [2024-06-27 23:58:08,612 INFO L175 Difference]: Start difference. First operand has 585 places, 435 transitions, 5611 flow. Second operand 11 states and 139 transitions. [2024-06-27 23:58:08,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 595 places, 450 transitions, 6587 flow [2024-06-27 23:58:10,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 585 places, 450 transitions, 6534 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-27 23:58:10,992 INFO L231 Difference]: Finished difference. Result has 586 places, 431 transitions, 5771 flow [2024-06-27 23:58:10,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5558, PETRI_DIFFERENCE_MINUEND_PLACES=575, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5771, PETRI_PLACES=586, PETRI_TRANSITIONS=431} [2024-06-27 23:58:10,992 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 556 predicate places. [2024-06-27 23:58:10,992 INFO L495 AbstractCegarLoop]: Abstraction has has 586 places, 431 transitions, 5771 flow [2024-06-27 23:58:10,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:58:10,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:58:10,993 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 23:58:10,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2024-06-27 23:58:10,993 INFO L420 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:58:10,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:58:10,993 INFO L85 PathProgramCache]: Analyzing trace with hash 363139493, now seen corresponding path program 24 times [2024-06-27 23:58:10,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:58:10,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216931489] [2024-06-27 23:58:10,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:58:10,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:58:11,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:58:12,476 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 23:58:12,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:58:12,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216931489] [2024-06-27 23:58:12,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216931489] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:58:12,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:58:12,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:58:12,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154834508] [2024-06-27 23:58:12,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:58:12,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:58:12,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:58:12,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:58:12,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:58:12,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:58:12,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 586 places, 431 transitions, 5771 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:58:12,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:58:12,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:58:12,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:58:13,294 INFO L124 PetriNetUnfolderBase]: 1053/2013 cut-off events. [2024-06-27 23:58:13,294 INFO L125 PetriNetUnfolderBase]: For 486410/486410 co-relation queries the response was YES. [2024-06-27 23:58:13,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16484 conditions, 2013 events. 1053/2013 cut-off events. For 486410/486410 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 12773 event pairs, 209 based on Foata normal form. 2/2015 useless extension candidates. Maximal degree in co-relation 16268. Up to 1495 conditions per place. [2024-06-27 23:58:13,324 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 327 selfloop transitions, 114 changer transitions 0/443 dead transitions. [2024-06-27 23:58:13,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 591 places, 443 transitions, 6707 flow [2024-06-27 23:58:13,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:58:13,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:58:13,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-27 23:58:13,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4129032258064516 [2024-06-27 23:58:13,325 INFO L175 Difference]: Start difference. First operand has 586 places, 431 transitions, 5771 flow. Second operand 10 states and 128 transitions. [2024-06-27 23:58:13,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 591 places, 443 transitions, 6707 flow [2024-06-27 23:58:15,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 581 places, 443 transitions, 6453 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-27 23:58:15,925 INFO L231 Difference]: Finished difference. Result has 582 places, 432 transitions, 5781 flow [2024-06-27 23:58:15,926 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5517, PETRI_DIFFERENCE_MINUEND_PLACES=572, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5781, PETRI_PLACES=582, PETRI_TRANSITIONS=432} [2024-06-27 23:58:15,926 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 552 predicate places. [2024-06-27 23:58:15,926 INFO L495 AbstractCegarLoop]: Abstraction has has 582 places, 432 transitions, 5781 flow [2024-06-27 23:58:15,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:58:15,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:58:15,926 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 23:58:15,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2024-06-27 23:58:15,927 INFO L420 AbstractCegarLoop]: === Iteration 206 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:58:15,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:58:15,928 INFO L85 PathProgramCache]: Analyzing trace with hash -584353063, now seen corresponding path program 25 times [2024-06-27 23:58:15,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:58:15,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667997023] [2024-06-27 23:58:15,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:58:15,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:58:15,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:58:17,431 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 23:58:17,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:58:17,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667997023] [2024-06-27 23:58:17,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667997023] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:58:17,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:58:17,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:58:17,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781189734] [2024-06-27 23:58:17,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:58:17,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:58:17,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:58:17,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:58:17,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:58:17,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:58:17,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 582 places, 432 transitions, 5781 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:58:17,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:58:17,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:58:17,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:58:18,117 INFO L124 PetriNetUnfolderBase]: 1064/2034 cut-off events. [2024-06-27 23:58:18,117 INFO L125 PetriNetUnfolderBase]: For 506986/506986 co-relation queries the response was YES. [2024-06-27 23:58:18,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16954 conditions, 2034 events. 1064/2034 cut-off events. For 506986/506986 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 12930 event pairs, 208 based on Foata normal form. 2/2036 useless extension candidates. Maximal degree in co-relation 16739. Up to 1499 conditions per place. [2024-06-27 23:58:18,148 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 321 selfloop transitions, 124 changer transitions 0/447 dead transitions. [2024-06-27 23:58:18,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 591 places, 447 transitions, 7087 flow [2024-06-27 23:58:18,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:58:18,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:58:18,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-27 23:58:18,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4096774193548387 [2024-06-27 23:58:18,149 INFO L175 Difference]: Start difference. First operand has 582 places, 432 transitions, 5781 flow. Second operand 10 states and 127 transitions. [2024-06-27 23:58:18,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 591 places, 447 transitions, 7087 flow [2024-06-27 23:58:20,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 583 places, 447 transitions, 6833 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-27 23:58:20,951 INFO L231 Difference]: Finished difference. Result has 584 places, 434 transitions, 5845 flow [2024-06-27 23:58:20,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5527, PETRI_DIFFERENCE_MINUEND_PLACES=574, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5845, PETRI_PLACES=584, PETRI_TRANSITIONS=434} [2024-06-27 23:58:20,951 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 554 predicate places. [2024-06-27 23:58:20,951 INFO L495 AbstractCegarLoop]: Abstraction has has 584 places, 434 transitions, 5845 flow [2024-06-27 23:58:20,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:58:20,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:58:20,952 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 23:58:20,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2024-06-27 23:58:20,952 INFO L420 AbstractCegarLoop]: === Iteration 207 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:58:20,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:58:20,952 INFO L85 PathProgramCache]: Analyzing trace with hash -2141734837, now seen corresponding path program 9 times [2024-06-27 23:58:20,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:58:20,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337608818] [2024-06-27 23:58:20,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:58:20,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:58:20,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:58:22,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:58:22,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:58:22,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337608818] [2024-06-27 23:58:22,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337608818] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:58:22,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:58:22,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:58:22,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441958125] [2024-06-27 23:58:22,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:58:22,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:58:22,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:58:22,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:58:22,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:58:22,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:58:22,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 584 places, 434 transitions, 5845 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:58:22,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:58:22,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:58:22,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:58:22,881 INFO L124 PetriNetUnfolderBase]: 1098/2108 cut-off events. [2024-06-27 23:58:22,881 INFO L125 PetriNetUnfolderBase]: For 689493/689493 co-relation queries the response was YES. [2024-06-27 23:58:22,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18749 conditions, 2108 events. 1098/2108 cut-off events. For 689493/689493 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 13481 event pairs, 218 based on Foata normal form. 8/2116 useless extension candidates. Maximal degree in co-relation 18534. Up to 1489 conditions per place. [2024-06-27 23:58:22,917 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 319 selfloop transitions, 125 changer transitions 7/454 dead transitions. [2024-06-27 23:58:22,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 594 places, 454 transitions, 7247 flow [2024-06-27 23:58:22,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:58:22,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:58:22,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 154 transitions. [2024-06-27 23:58:22,918 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45161290322580644 [2024-06-27 23:58:22,918 INFO L175 Difference]: Start difference. First operand has 584 places, 434 transitions, 5845 flow. Second operand 11 states and 154 transitions. [2024-06-27 23:58:22,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 594 places, 454 transitions, 7247 flow [2024-06-27 23:58:26,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 588 places, 454 transitions, 7044 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-27 23:58:26,060 INFO L231 Difference]: Finished difference. Result has 589 places, 432 transitions, 5882 flow [2024-06-27 23:58:26,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5642, PETRI_DIFFERENCE_MINUEND_PLACES=578, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5882, PETRI_PLACES=589, PETRI_TRANSITIONS=432} [2024-06-27 23:58:26,061 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 559 predicate places. [2024-06-27 23:58:26,061 INFO L495 AbstractCegarLoop]: Abstraction has has 589 places, 432 transitions, 5882 flow [2024-06-27 23:58:26,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:58:26,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:58:26,061 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 23:58:26,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2024-06-27 23:58:26,061 INFO L420 AbstractCegarLoop]: === Iteration 208 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:58:26,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:58:26,062 INFO L85 PathProgramCache]: Analyzing trace with hash 363139710, now seen corresponding path program 4 times [2024-06-27 23:58:26,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:58:26,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849285946] [2024-06-27 23:58:26,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:58:26,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:58:26,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:58:27,480 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 23:58:27,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:58:27,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849285946] [2024-06-27 23:58:27,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849285946] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:58:27,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:58:27,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:58:27,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383205176] [2024-06-27 23:58:27,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:58:27,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:58:27,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:58:27,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:58:27,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:58:27,589 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:58:27,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 589 places, 432 transitions, 5882 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:58:27,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:58:27,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:58:27,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:58:28,146 INFO L124 PetriNetUnfolderBase]: 1078/2067 cut-off events. [2024-06-27 23:58:28,146 INFO L125 PetriNetUnfolderBase]: For 596346/596346 co-relation queries the response was YES. [2024-06-27 23:58:28,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18444 conditions, 2067 events. 1078/2067 cut-off events. For 596346/596346 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 13179 event pairs, 220 based on Foata normal form. 1/2068 useless extension candidates. Maximal degree in co-relation 18226. Up to 1531 conditions per place. [2024-06-27 23:58:28,179 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 321 selfloop transitions, 118 changer transitions 0/441 dead transitions. [2024-06-27 23:58:28,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 595 places, 441 transitions, 6780 flow [2024-06-27 23:58:28,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:58:28,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:58:28,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-27 23:58:28,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43010752688172044 [2024-06-27 23:58:28,180 INFO L175 Difference]: Start difference. First operand has 589 places, 432 transitions, 5882 flow. Second operand 9 states and 120 transitions. [2024-06-27 23:58:28,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 595 places, 441 transitions, 6780 flow [2024-06-27 23:58:30,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 585 places, 441 transitions, 6491 flow, removed 21 selfloop flow, removed 10 redundant places. [2024-06-27 23:58:30,905 INFO L231 Difference]: Finished difference. Result has 586 places, 432 transitions, 5846 flow [2024-06-27 23:58:30,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5593, PETRI_DIFFERENCE_MINUEND_PLACES=577, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5846, PETRI_PLACES=586, PETRI_TRANSITIONS=432} [2024-06-27 23:58:30,905 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 556 predicate places. [2024-06-27 23:58:30,905 INFO L495 AbstractCegarLoop]: Abstraction has has 586 places, 432 transitions, 5846 flow [2024-06-27 23:58:30,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:58:30,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:58:30,905 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 23:58:30,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2024-06-27 23:58:30,905 INFO L420 AbstractCegarLoop]: === Iteration 209 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:58:30,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:58:30,906 INFO L85 PathProgramCache]: Analyzing trace with hash 2127586213, now seen corresponding path program 26 times [2024-06-27 23:58:30,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:58:30,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187881705] [2024-06-27 23:58:30,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:58:30,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:58:30,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:58:32,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:58:32,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:58:32,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187881705] [2024-06-27 23:58:32,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187881705] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:58:32,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:58:32,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:58:32,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701261884] [2024-06-27 23:58:32,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:58:32,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:58:32,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:58:32,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:58:32,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:58:32,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:58:32,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 586 places, 432 transitions, 5846 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:58:32,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:58:32,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:58:32,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:58:33,176 INFO L124 PetriNetUnfolderBase]: 1082/2075 cut-off events. [2024-06-27 23:58:33,176 INFO L125 PetriNetUnfolderBase]: For 604797/604797 co-relation queries the response was YES. [2024-06-27 23:58:33,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18449 conditions, 2075 events. 1082/2075 cut-off events. For 604797/604797 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 13224 event pairs, 218 based on Foata normal form. 2/2077 useless extension candidates. Maximal degree in co-relation 18232. Up to 1557 conditions per place. [2024-06-27 23:58:33,207 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 332 selfloop transitions, 110 changer transitions 0/444 dead transitions. [2024-06-27 23:58:33,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 595 places, 444 transitions, 6788 flow [2024-06-27 23:58:33,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:58:33,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:58:33,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-27 23:58:33,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4161290322580645 [2024-06-27 23:58:33,208 INFO L175 Difference]: Start difference. First operand has 586 places, 432 transitions, 5846 flow. Second operand 10 states and 129 transitions. [2024-06-27 23:58:33,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 595 places, 444 transitions, 6788 flow [2024-06-27 23:58:35,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 587 places, 444 transitions, 6546 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-27 23:58:35,928 INFO L231 Difference]: Finished difference. Result has 588 places, 433 transitions, 5864 flow [2024-06-27 23:58:35,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5604, PETRI_DIFFERENCE_MINUEND_PLACES=578, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5864, PETRI_PLACES=588, PETRI_TRANSITIONS=433} [2024-06-27 23:58:35,929 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 558 predicate places. [2024-06-27 23:58:35,929 INFO L495 AbstractCegarLoop]: Abstraction has has 588 places, 433 transitions, 5864 flow [2024-06-27 23:58:35,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:58:35,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:58:35,929 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 23:58:35,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2024-06-27 23:58:35,929 INFO L420 AbstractCegarLoop]: === Iteration 210 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:58:35,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:58:35,930 INFO L85 PathProgramCache]: Analyzing trace with hash -840321981, now seen corresponding path program 27 times [2024-06-27 23:58:35,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:58:35,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443162847] [2024-06-27 23:58:35,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:58:35,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:58:35,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:58:37,522 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 23:58:37,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:58:37,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443162847] [2024-06-27 23:58:37,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443162847] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:58:37,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:58:37,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:58:37,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971199086] [2024-06-27 23:58:37,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:58:37,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:58:37,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:58:37,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:58:37,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:58:37,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:58:37,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 588 places, 433 transitions, 5864 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:58:37,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:58:37,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:58:37,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:58:38,445 INFO L124 PetriNetUnfolderBase]: 1086/2083 cut-off events. [2024-06-27 23:58:38,445 INFO L125 PetriNetUnfolderBase]: For 612604/612604 co-relation queries the response was YES. [2024-06-27 23:58:38,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18528 conditions, 2083 events. 1086/2083 cut-off events. For 612604/612604 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 13292 event pairs, 220 based on Foata normal form. 2/2085 useless extension candidates. Maximal degree in co-relation 18310. Up to 1565 conditions per place. [2024-06-27 23:58:38,473 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 329 selfloop transitions, 114 changer transitions 0/445 dead transitions. [2024-06-27 23:58:38,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 597 places, 445 transitions, 6790 flow [2024-06-27 23:58:38,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:58:38,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:58:38,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-27 23:58:38,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4064516129032258 [2024-06-27 23:58:38,474 INFO L175 Difference]: Start difference. First operand has 588 places, 433 transitions, 5864 flow. Second operand 10 states and 126 transitions. [2024-06-27 23:58:38,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 597 places, 445 transitions, 6790 flow [2024-06-27 23:58:41,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 589 places, 445 transitions, 6540 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-27 23:58:41,244 INFO L231 Difference]: Finished difference. Result has 590 places, 434 transitions, 5864 flow [2024-06-27 23:58:41,244 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5614, PETRI_DIFFERENCE_MINUEND_PLACES=580, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5864, PETRI_PLACES=590, PETRI_TRANSITIONS=434} [2024-06-27 23:58:41,244 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 560 predicate places. [2024-06-27 23:58:41,244 INFO L495 AbstractCegarLoop]: Abstraction has has 590 places, 434 transitions, 5864 flow [2024-06-27 23:58:41,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:58:41,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:58:41,244 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 23:58:41,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2024-06-27 23:58:41,244 INFO L420 AbstractCegarLoop]: === Iteration 211 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:58:41,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:58:41,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1933444993, now seen corresponding path program 28 times [2024-06-27 23:58:41,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:58:41,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463942494] [2024-06-27 23:58:41,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:58:41,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:58:41,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:58:43,098 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 23:58:43,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:58:43,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463942494] [2024-06-27 23:58:43,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463942494] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:58:43,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:58:43,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:58:43,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623109098] [2024-06-27 23:58:43,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:58:43,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:58:43,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:58:43,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:58:43,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:58:43,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:58:43,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 590 places, 434 transitions, 5864 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:58:43,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:58:43,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:58:43,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:58:44,093 INFO L124 PetriNetUnfolderBase]: 1116/2149 cut-off events. [2024-06-27 23:58:44,093 INFO L125 PetriNetUnfolderBase]: For 775911/775911 co-relation queries the response was YES. [2024-06-27 23:58:44,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18543 conditions, 2149 events. 1116/2149 cut-off events. For 775911/775911 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 13817 event pairs, 231 based on Foata normal form. 16/2165 useless extension candidates. Maximal degree in co-relation 18324. Up to 1552 conditions per place. [2024-06-27 23:58:44,126 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 331 selfloop transitions, 102 changer transitions 21/456 dead transitions. [2024-06-27 23:58:44,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 600 places, 456 transitions, 6926 flow [2024-06-27 23:58:44,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:58:44,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:58:44,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-27 23:58:44,127 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4222873900293255 [2024-06-27 23:58:44,127 INFO L175 Difference]: Start difference. First operand has 590 places, 434 transitions, 5864 flow. Second operand 11 states and 144 transitions. [2024-06-27 23:58:44,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 600 places, 456 transitions, 6926 flow [2024-06-27 23:58:47,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 592 places, 456 transitions, 6678 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-27 23:58:47,032 INFO L231 Difference]: Finished difference. Result has 594 places, 427 transitions, 5762 flow [2024-06-27 23:58:47,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5616, PETRI_DIFFERENCE_MINUEND_PLACES=582, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5762, PETRI_PLACES=594, PETRI_TRANSITIONS=427} [2024-06-27 23:58:47,032 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 564 predicate places. [2024-06-27 23:58:47,032 INFO L495 AbstractCegarLoop]: Abstraction has has 594 places, 427 transitions, 5762 flow [2024-06-27 23:58:47,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:58:47,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:58:47,032 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 23:58:47,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2024-06-27 23:58:47,033 INFO L420 AbstractCegarLoop]: === Iteration 212 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:58:47,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:58:47,033 INFO L85 PathProgramCache]: Analyzing trace with hash 2127378823, now seen corresponding path program 29 times [2024-06-27 23:58:47,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:58:47,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338860319] [2024-06-27 23:58:47,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:58:47,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:58:47,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:58:48,542 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 23:58:48,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:58:48,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338860319] [2024-06-27 23:58:48,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338860319] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:58:48,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:58:48,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:58:48,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036088940] [2024-06-27 23:58:48,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:58:48,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:58:48,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:58:48,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:58:48,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:58:48,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:58:48,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 594 places, 427 transitions, 5762 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:58:48,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:58:48,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:58:48,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:58:49,309 INFO L124 PetriNetUnfolderBase]: 1073/2064 cut-off events. [2024-06-27 23:58:49,309 INFO L125 PetriNetUnfolderBase]: For 599772/599772 co-relation queries the response was YES. [2024-06-27 23:58:49,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18131 conditions, 2064 events. 1073/2064 cut-off events. For 599772/599772 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 13189 event pairs, 219 based on Foata normal form. 2/2066 useless extension candidates. Maximal degree in co-relation 17910. Up to 1534 conditions per place. [2024-06-27 23:58:49,342 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 330 selfloop transitions, 108 changer transitions 0/440 dead transitions. [2024-06-27 23:58:49,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 598 places, 440 transitions, 6700 flow [2024-06-27 23:58:49,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:58:49,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:58:49,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-27 23:58:49,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4161290322580645 [2024-06-27 23:58:49,343 INFO L175 Difference]: Start difference. First operand has 594 places, 427 transitions, 5762 flow. Second operand 10 states and 129 transitions. [2024-06-27 23:58:49,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 598 places, 440 transitions, 6700 flow [2024-06-27 23:58:52,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 587 places, 440 transitions, 6480 flow, removed 7 selfloop flow, removed 11 redundant places. [2024-06-27 23:58:52,596 INFO L231 Difference]: Finished difference. Result has 588 places, 428 transitions, 5800 flow [2024-06-27 23:58:52,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5542, PETRI_DIFFERENCE_MINUEND_PLACES=578, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5800, PETRI_PLACES=588, PETRI_TRANSITIONS=428} [2024-06-27 23:58:52,596 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 558 predicate places. [2024-06-27 23:58:52,596 INFO L495 AbstractCegarLoop]: Abstraction has has 588 places, 428 transitions, 5800 flow [2024-06-27 23:58:52,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:58:52,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:58:52,597 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 23:58:52,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2024-06-27 23:58:52,597 INFO L420 AbstractCegarLoop]: === Iteration 213 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:58:52,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:58:52,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1194600727, now seen corresponding path program 30 times [2024-06-27 23:58:52,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:58:52,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985557357] [2024-06-27 23:58:52,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:58:52,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:58:52,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:58:54,043 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 23:58:54,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:58:54,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985557357] [2024-06-27 23:58:54,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985557357] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:58:54,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:58:54,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:58:54,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658668122] [2024-06-27 23:58:54,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:58:54,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:58:54,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:58:54,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:58:54,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:58:54,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:58:54,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 588 places, 428 transitions, 5800 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:58:54,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:58:54,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:58:54,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:58:54,832 INFO L124 PetriNetUnfolderBase]: 1070/2059 cut-off events. [2024-06-27 23:58:54,832 INFO L125 PetriNetUnfolderBase]: For 565606/565606 co-relation queries the response was YES. [2024-06-27 23:58:54,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17745 conditions, 2059 events. 1070/2059 cut-off events. For 565606/565606 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 13152 event pairs, 220 based on Foata normal form. 2/2061 useless extension candidates. Maximal degree in co-relation 17526. Up to 1549 conditions per place. [2024-06-27 23:58:54,864 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 316 selfloop transitions, 121 changer transitions 0/439 dead transitions. [2024-06-27 23:58:54,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 597 places, 439 transitions, 6698 flow [2024-06-27 23:58:54,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:58:54,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:58:54,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-27 23:58:54,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4064516129032258 [2024-06-27 23:58:54,865 INFO L175 Difference]: Start difference. First operand has 588 places, 428 transitions, 5800 flow. Second operand 10 states and 126 transitions. [2024-06-27 23:58:54,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 597 places, 439 transitions, 6698 flow [2024-06-27 23:58:57,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 589 places, 439 transitions, 6434 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-27 23:58:57,946 INFO L231 Difference]: Finished difference. Result has 590 places, 428 transitions, 5782 flow [2024-06-27 23:58:57,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5536, PETRI_DIFFERENCE_MINUEND_PLACES=580, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5782, PETRI_PLACES=590, PETRI_TRANSITIONS=428} [2024-06-27 23:58:57,947 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 560 predicate places. [2024-06-27 23:58:57,947 INFO L495 AbstractCegarLoop]: Abstraction has has 590 places, 428 transitions, 5782 flow [2024-06-27 23:58:57,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:58:57,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:58:57,947 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 23:58:57,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2024-06-27 23:58:57,947 INFO L420 AbstractCegarLoop]: === Iteration 214 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:58:57,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:58:57,948 INFO L85 PathProgramCache]: Analyzing trace with hash 987941707, now seen corresponding path program 31 times [2024-06-27 23:58:57,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:58:57,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760263654] [2024-06-27 23:58:57,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:58:57,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:58:57,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:58:59,522 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 23:58:59,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:58:59,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760263654] [2024-06-27 23:58:59,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760263654] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:58:59,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:58:59,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:58:59,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421960741] [2024-06-27 23:58:59,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:58:59,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:58:59,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:58:59,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:58:59,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:58:59,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:58:59,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 590 places, 428 transitions, 5782 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:58:59,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:58:59,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:58:59,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:59:00,406 INFO L124 PetriNetUnfolderBase]: 1081/2080 cut-off events. [2024-06-27 23:59:00,406 INFO L125 PetriNetUnfolderBase]: For 597872/597872 co-relation queries the response was YES. [2024-06-27 23:59:00,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18268 conditions, 2080 events. 1081/2080 cut-off events. For 597872/597872 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 13349 event pairs, 223 based on Foata normal form. 2/2082 useless extension candidates. Maximal degree in co-relation 18048. Up to 1553 conditions per place. [2024-06-27 23:59:00,439 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 316 selfloop transitions, 125 changer transitions 0/443 dead transitions. [2024-06-27 23:59:00,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 600 places, 443 transitions, 7100 flow [2024-06-27 23:59:00,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:59:00,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:59:00,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-27 23:59:00,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-27 23:59:00,439 INFO L175 Difference]: Start difference. First operand has 590 places, 428 transitions, 5782 flow. Second operand 11 states and 132 transitions. [2024-06-27 23:59:00,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 600 places, 443 transitions, 7100 flow [2024-06-27 23:59:03,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 591 places, 443 transitions, 6856 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 23:59:03,501 INFO L231 Difference]: Finished difference. Result has 592 places, 430 transitions, 5870 flow [2024-06-27 23:59:03,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5538, PETRI_DIFFERENCE_MINUEND_PLACES=581, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5870, PETRI_PLACES=592, PETRI_TRANSITIONS=430} [2024-06-27 23:59:03,502 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 562 predicate places. [2024-06-27 23:59:03,502 INFO L495 AbstractCegarLoop]: Abstraction has has 592 places, 430 transitions, 5870 flow [2024-06-27 23:59:03,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:59:03,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:59:03,502 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 23:59:03,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2024-06-27 23:59:03,502 INFO L420 AbstractCegarLoop]: === Iteration 215 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:59:03,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:59:03,502 INFO L85 PathProgramCache]: Analyzing trace with hash 156336323, now seen corresponding path program 32 times [2024-06-27 23:59:03,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:59:03,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518486961] [2024-06-27 23:59:03,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:59:03,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:59:03,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:59:05,109 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 23:59:05,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:59:05,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518486961] [2024-06-27 23:59:05,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518486961] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:59:05,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:59:05,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:59:05,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921817954] [2024-06-27 23:59:05,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:59:05,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:59:05,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:59:05,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:59:05,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:59:05,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:59:05,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 592 places, 430 transitions, 5870 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:59:05,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:59:05,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:59:05,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:59:06,069 INFO L124 PetriNetUnfolderBase]: 1085/2088 cut-off events. [2024-06-27 23:59:06,070 INFO L125 PetriNetUnfolderBase]: For 605629/605629 co-relation queries the response was YES. [2024-06-27 23:59:06,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18424 conditions, 2088 events. 1085/2088 cut-off events. For 605629/605629 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 13385 event pairs, 223 based on Foata normal form. 2/2090 useless extension candidates. Maximal degree in co-relation 18202. Up to 1522 conditions per place. [2024-06-27 23:59:06,100 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 334 selfloop transitions, 108 changer transitions 0/444 dead transitions. [2024-06-27 23:59:06,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 602 places, 444 transitions, 6822 flow [2024-06-27 23:59:06,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:59:06,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:59:06,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-27 23:59:06,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2024-06-27 23:59:06,101 INFO L175 Difference]: Start difference. First operand has 592 places, 430 transitions, 5870 flow. Second operand 11 states and 136 transitions. [2024-06-27 23:59:06,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 602 places, 444 transitions, 6822 flow [2024-06-27 23:59:09,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 595 places, 444 transitions, 6606 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-27 23:59:09,252 INFO L231 Difference]: Finished difference. Result has 596 places, 431 transitions, 5916 flow [2024-06-27 23:59:09,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5654, PETRI_DIFFERENCE_MINUEND_PLACES=585, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5916, PETRI_PLACES=596, PETRI_TRANSITIONS=431} [2024-06-27 23:59:09,252 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 566 predicate places. [2024-06-27 23:59:09,253 INFO L495 AbstractCegarLoop]: Abstraction has has 596 places, 431 transitions, 5916 flow [2024-06-27 23:59:09,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:59:09,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:59:09,253 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 23:59:09,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2024-06-27 23:59:09,253 INFO L420 AbstractCegarLoop]: === Iteration 216 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:59:09,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:59:09,253 INFO L85 PathProgramCache]: Analyzing trace with hash 987797557, now seen corresponding path program 33 times [2024-06-27 23:59:09,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:59:09,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642162500] [2024-06-27 23:59:09,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:59:09,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:59:09,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:59:10,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:59:10,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:59:10,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642162500] [2024-06-27 23:59:10,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642162500] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:59:10,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:59:10,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:59:10,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514649022] [2024-06-27 23:59:10,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:59:10,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:59:10,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:59:10,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:59:10,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:59:11,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:59:11,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 596 places, 431 transitions, 5916 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:59:11,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:59:11,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:59:11,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:59:11,791 INFO L124 PetriNetUnfolderBase]: 1096/2109 cut-off events. [2024-06-27 23:59:11,791 INFO L125 PetriNetUnfolderBase]: For 644304/644304 co-relation queries the response was YES. [2024-06-27 23:59:11,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19084 conditions, 2109 events. 1096/2109 cut-off events. For 644304/644304 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 13555 event pairs, 226 based on Foata normal form. 2/2111 useless extension candidates. Maximal degree in co-relation 18860. Up to 1507 conditions per place. [2024-06-27 23:59:11,819 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 315 selfloop transitions, 130 changer transitions 0/447 dead transitions. [2024-06-27 23:59:11,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 606 places, 447 transitions, 7256 flow [2024-06-27 23:59:11,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:59:11,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:59:11,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-27 23:59:11,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-27 23:59:11,820 INFO L175 Difference]: Start difference. First operand has 596 places, 431 transitions, 5916 flow. Second operand 11 states and 132 transitions. [2024-06-27 23:59:11,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 606 places, 447 transitions, 7256 flow [2024-06-27 23:59:14,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 597 places, 447 transitions, 7004 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-27 23:59:14,853 INFO L231 Difference]: Finished difference. Result has 598 places, 433 transitions, 6014 flow [2024-06-27 23:59:14,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5664, PETRI_DIFFERENCE_MINUEND_PLACES=587, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6014, PETRI_PLACES=598, PETRI_TRANSITIONS=433} [2024-06-27 23:59:14,854 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 568 predicate places. [2024-06-27 23:59:14,854 INFO L495 AbstractCegarLoop]: Abstraction has has 598 places, 433 transitions, 6014 flow [2024-06-27 23:59:14,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:59:14,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:59:14,854 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 23:59:14,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2024-06-27 23:59:14,854 INFO L420 AbstractCegarLoop]: === Iteration 217 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:59:14,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:59:14,854 INFO L85 PathProgramCache]: Analyzing trace with hash 63662929, now seen corresponding path program 10 times [2024-06-27 23:59:14,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:59:14,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650631905] [2024-06-27 23:59:14,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:59:14,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:59:14,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:59:16,372 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 23:59:16,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:59:16,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650631905] [2024-06-27 23:59:16,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650631905] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:59:16,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:59:16,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:59:16,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380481816] [2024-06-27 23:59:16,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:59:16,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:59:16,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:59:16,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:59:16,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:59:16,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:59:16,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 598 places, 433 transitions, 6014 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states 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 23:59:16,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:59:16,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:59:16,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:59:17,341 INFO L124 PetriNetUnfolderBase]: 1108/2137 cut-off events. [2024-06-27 23:59:17,342 INFO L125 PetriNetUnfolderBase]: For 731060/731060 co-relation queries the response was YES. [2024-06-27 23:59:17,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19321 conditions, 2137 events. 1108/2137 cut-off events. For 731060/731060 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 13800 event pairs, 420 based on Foata normal form. 8/2145 useless extension candidates. Maximal degree in co-relation 19096. Up to 1994 conditions per place. [2024-06-27 23:59:17,375 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 427 selfloop transitions, 18 changer transitions 7/454 dead transitions. [2024-06-27 23:59:17,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 610 places, 454 transitions, 7464 flow [2024-06-27 23:59:17,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 23:59:17,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 23:59:17,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 125 transitions. [2024-06-27 23:59:17,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31017369727047145 [2024-06-27 23:59:17,375 INFO L175 Difference]: Start difference. First operand has 598 places, 433 transitions, 6014 flow. Second operand 13 states and 125 transitions. [2024-06-27 23:59:17,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 610 places, 454 transitions, 7464 flow [2024-06-27 23:59:20,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 603 places, 454 transitions, 7244 flow, removed 29 selfloop flow, removed 7 redundant places. [2024-06-27 23:59:20,544 INFO L231 Difference]: Finished difference. Result has 604 places, 431 transitions, 5818 flow [2024-06-27 23:59:20,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5794, PETRI_DIFFERENCE_MINUEND_PLACES=591, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=415, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5818, PETRI_PLACES=604, PETRI_TRANSITIONS=431} [2024-06-27 23:59:20,544 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 574 predicate places. [2024-06-27 23:59:20,544 INFO L495 AbstractCegarLoop]: Abstraction has has 604 places, 431 transitions, 5818 flow [2024-06-27 23:59:20,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states 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 23:59:20,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:59:20,544 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 23:59:20,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2024-06-27 23:59:20,545 INFO L420 AbstractCegarLoop]: === Iteration 218 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:59:20,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:59:20,545 INFO L85 PathProgramCache]: Analyzing trace with hash -783649273, now seen corresponding path program 34 times [2024-06-27 23:59:20,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:59:20,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257957026] [2024-06-27 23:59:20,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:59:20,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:59:20,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:59:22,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:59:22,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:59:22,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257957026] [2024-06-27 23:59:22,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257957026] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:59:22,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:59:22,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:59:22,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280262272] [2024-06-27 23:59:22,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:59:22,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:59:22,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:59:22,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:59:22,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:59:22,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:59:22,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 604 places, 431 transitions, 5818 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:59:22,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:59:22,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:59:22,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:59:23,197 INFO L124 PetriNetUnfolderBase]: 1087/2094 cut-off events. [2024-06-27 23:59:23,197 INFO L125 PetriNetUnfolderBase]: For 625538/625538 co-relation queries the response was YES. [2024-06-27 23:59:23,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18577 conditions, 2094 events. 1087/2094 cut-off events. For 625538/625538 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 13458 event pairs, 229 based on Foata normal form. 2/2096 useless extension candidates. Maximal degree in co-relation 18350. Up to 1584 conditions per place. [2024-06-27 23:59:23,230 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 316 selfloop transitions, 124 changer transitions 0/442 dead transitions. [2024-06-27 23:59:23,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 611 places, 442 transitions, 6722 flow [2024-06-27 23:59:23,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:59:23,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:59:23,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-27 23:59:23,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-27 23:59:23,232 INFO L175 Difference]: Start difference. First operand has 604 places, 431 transitions, 5818 flow. Second operand 10 states and 124 transitions. [2024-06-27 23:59:23,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 611 places, 442 transitions, 6722 flow [2024-06-27 23:59:26,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 599 places, 442 transitions, 6665 flow, removed 12 selfloop flow, removed 12 redundant places. [2024-06-27 23:59:26,393 INFO L231 Difference]: Finished difference. Result has 600 places, 431 transitions, 6013 flow [2024-06-27 23:59:26,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5761, PETRI_DIFFERENCE_MINUEND_PLACES=590, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6013, PETRI_PLACES=600, PETRI_TRANSITIONS=431} [2024-06-27 23:59:26,394 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 570 predicate places. [2024-06-27 23:59:26,394 INFO L495 AbstractCegarLoop]: Abstraction has has 600 places, 431 transitions, 6013 flow [2024-06-27 23:59:26,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:59:26,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:59:26,394 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 23:59:26,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2024-06-27 23:59:26,394 INFO L420 AbstractCegarLoop]: === Iteration 219 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:59:26,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:59:26,394 INFO L85 PathProgramCache]: Analyzing trace with hash -840327561, now seen corresponding path program 35 times [2024-06-27 23:59:26,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:59:26,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112273138] [2024-06-27 23:59:26,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:59:26,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:59:26,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:59:28,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:59:28,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:59:28,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112273138] [2024-06-27 23:59:28,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112273138] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:59:28,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:59:28,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:59:28,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078556038] [2024-06-27 23:59:28,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:59:28,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:59:28,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:59:28,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:59:28,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:59:28,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:59:28,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 600 places, 431 transitions, 6013 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:59:28,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:59:28,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:59:28,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:59:29,061 INFO L124 PetriNetUnfolderBase]: 1084/2089 cut-off events. [2024-06-27 23:59:29,061 INFO L125 PetriNetUnfolderBase]: For 596175/596175 co-relation queries the response was YES. [2024-06-27 23:59:29,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18359 conditions, 2089 events. 1084/2089 cut-off events. For 596175/596175 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 13396 event pairs, 220 based on Foata normal form. 2/2091 useless extension candidates. Maximal degree in co-relation 18134. Up to 1565 conditions per place. [2024-06-27 23:59:29,090 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 329 selfloop transitions, 112 changer transitions 0/443 dead transitions. [2024-06-27 23:59:29,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 610 places, 443 transitions, 6921 flow [2024-06-27 23:59:29,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:59:29,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:59:29,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-27 23:59:29,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39002932551319647 [2024-06-27 23:59:29,092 INFO L175 Difference]: Start difference. First operand has 600 places, 431 transitions, 6013 flow. Second operand 11 states and 133 transitions. [2024-06-27 23:59:29,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 610 places, 443 transitions, 6921 flow [2024-06-27 23:59:32,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 601 places, 443 transitions, 6659 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-27 23:59:32,199 INFO L231 Difference]: Finished difference. Result has 602 places, 431 transitions, 5979 flow [2024-06-27 23:59:32,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5751, PETRI_DIFFERENCE_MINUEND_PLACES=591, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5979, PETRI_PLACES=602, PETRI_TRANSITIONS=431} [2024-06-27 23:59:32,199 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 572 predicate places. [2024-06-27 23:59:32,200 INFO L495 AbstractCegarLoop]: Abstraction has has 602 places, 431 transitions, 5979 flow [2024-06-27 23:59:32,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:59:32,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:59:32,200 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 23:59:32,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2024-06-27 23:59:32,200 INFO L420 AbstractCegarLoop]: === Iteration 220 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:59:32,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:59:32,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1168083547, now seen corresponding path program 11 times [2024-06-27 23:59:32,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:59:32,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996334881] [2024-06-27 23:59:32,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:59:32,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:59:32,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:59:33,816 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 23:59:33,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:59:33,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996334881] [2024-06-27 23:59:33,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996334881] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:59:33,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:59:33,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 23:59:33,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138611969] [2024-06-27 23:59:33,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:59:33,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 23:59:33,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:59:33,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 23:59:33,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-27 23:59:33,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 23:59:33,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 602 places, 431 transitions, 5979 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:59:33,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:59:33,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 23:59:33,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:59:34,738 INFO L124 PetriNetUnfolderBase]: 1071/2066 cut-off events. [2024-06-27 23:59:34,738 INFO L125 PetriNetUnfolderBase]: For 571580/571580 co-relation queries the response was YES. [2024-06-27 23:59:34,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16519 conditions, 2066 events. 1071/2066 cut-off events. For 571580/571580 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 13316 event pairs, 411 based on Foata normal form. 10/2076 useless extension candidates. Maximal degree in co-relation 16292. Up to 1984 conditions per place. [2024-06-27 23:59:34,770 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 417 selfloop transitions, 14 changer transitions 14/447 dead transitions. [2024-06-27 23:59:34,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 614 places, 447 transitions, 6995 flow [2024-06-27 23:59:34,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 23:59:34,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 23:59:34,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 119 transitions. [2024-06-27 23:59:34,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29528535980148884 [2024-06-27 23:59:34,771 INFO L175 Difference]: Start difference. First operand has 602 places, 431 transitions, 5979 flow. Second operand 13 states and 119 transitions. [2024-06-27 23:59:34,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 614 places, 447 transitions, 6995 flow [2024-06-27 23:59:37,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 604 places, 447 transitions, 6765 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-27 23:59:37,327 INFO L231 Difference]: Finished difference. Result has 605 places, 425 transitions, 5721 flow [2024-06-27 23:59:37,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5749, PETRI_DIFFERENCE_MINUEND_PLACES=592, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5721, PETRI_PLACES=605, PETRI_TRANSITIONS=425} [2024-06-27 23:59:37,328 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 575 predicate places. [2024-06-27 23:59:37,328 INFO L495 AbstractCegarLoop]: Abstraction has has 605 places, 425 transitions, 5721 flow [2024-06-27 23:59:37,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:59:37,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:59:37,328 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 23:59:37,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2024-06-27 23:59:37,328 INFO L420 AbstractCegarLoop]: === Iteration 221 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:59:37,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:59:37,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1366391501, now seen corresponding path program 36 times [2024-06-27 23:59:37,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:59:37,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970899108] [2024-06-27 23:59:37,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:59:37,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:59:37,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:59:39,125 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 23:59:39,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:59:39,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970899108] [2024-06-27 23:59:39,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970899108] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:59:39,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:59:39,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:59:39,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679038808] [2024-06-27 23:59:39,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:59:39,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:59:39,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:59:39,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:59:39,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:59:39,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:59:39,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 605 places, 425 transitions, 5721 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:59:39,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:59:39,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:59:39,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:59:39,916 INFO L124 PetriNetUnfolderBase]: 1043/2010 cut-off events. [2024-06-27 23:59:39,917 INFO L125 PetriNetUnfolderBase]: For 434910/434910 co-relation queries the response was YES. [2024-06-27 23:59:39,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15598 conditions, 2010 events. 1043/2010 cut-off events. For 434910/434910 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 12902 event pairs, 204 based on Foata normal form. 2/2012 useless extension candidates. Maximal degree in co-relation 15370. Up to 1397 conditions per place. [2024-06-27 23:59:39,947 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 304 selfloop transitions, 135 changer transitions 0/441 dead transitions. [2024-06-27 23:59:39,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 607 places, 441 transitions, 6975 flow [2024-06-27 23:59:39,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:59:39,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:59:39,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 143 transitions. [2024-06-27 23:59:39,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3844086021505376 [2024-06-27 23:59:39,948 INFO L175 Difference]: Start difference. First operand has 605 places, 425 transitions, 5721 flow. Second operand 12 states and 143 transitions. [2024-06-27 23:59:39,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 607 places, 441 transitions, 6975 flow [2024-06-27 23:59:42,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 595 places, 441 transitions, 6929 flow, removed 9 selfloop flow, removed 12 redundant places. [2024-06-27 23:59:42,282 INFO L231 Difference]: Finished difference. Result has 596 places, 425 transitions, 5955 flow [2024-06-27 23:59:42,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5681, PETRI_DIFFERENCE_MINUEND_PLACES=584, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5955, PETRI_PLACES=596, PETRI_TRANSITIONS=425} [2024-06-27 23:59:42,283 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 566 predicate places. [2024-06-27 23:59:42,283 INFO L495 AbstractCegarLoop]: Abstraction has has 596 places, 425 transitions, 5955 flow [2024-06-27 23:59:42,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:59:42,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:59:42,283 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 23:59:42,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2024-06-27 23:59:42,283 INFO L420 AbstractCegarLoop]: === Iteration 222 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:59:42,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:59:42,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1423869561, now seen corresponding path program 37 times [2024-06-27 23:59:42,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:59:42,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280998956] [2024-06-27 23:59:42,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:59:42,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:59:42,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:59:43,799 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 23:59:43,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:59:43,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280998956] [2024-06-27 23:59:43,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280998956] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:59:43,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:59:43,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:59:43,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953895083] [2024-06-27 23:59:43,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:59:43,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:59:43,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:59:43,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:59:43,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:59:43,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:59:43,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 596 places, 425 transitions, 5955 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:59:43,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:59:43,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:59:43,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:59:44,463 INFO L124 PetriNetUnfolderBase]: 1047/2018 cut-off events. [2024-06-27 23:59:44,463 INFO L125 PetriNetUnfolderBase]: For 425896/425896 co-relation queries the response was YES. [2024-06-27 23:59:44,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15900 conditions, 2018 events. 1047/2018 cut-off events. For 425896/425896 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 12964 event pairs, 208 based on Foata normal form. 2/2020 useless extension candidates. Maximal degree in co-relation 15674. Up to 1477 conditions per place. [2024-06-27 23:59:44,495 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 289 selfloop transitions, 148 changer transitions 0/439 dead transitions. [2024-06-27 23:59:44,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 605 places, 439 transitions, 7227 flow [2024-06-27 23:59:44,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:59:44,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:59:44,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-27 23:59:44,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-27 23:59:44,496 INFO L175 Difference]: Start difference. First operand has 596 places, 425 transitions, 5955 flow. Second operand 10 states and 125 transitions. [2024-06-27 23:59:44,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 605 places, 439 transitions, 7227 flow [2024-06-27 23:59:46,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 589 places, 439 transitions, 6617 flow, removed 26 selfloop flow, removed 16 redundant places. [2024-06-27 23:59:46,742 INFO L231 Difference]: Finished difference. Result has 590 places, 426 transitions, 5677 flow [2024-06-27 23:59:46,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5348, PETRI_DIFFERENCE_MINUEND_PLACES=580, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5677, PETRI_PLACES=590, PETRI_TRANSITIONS=426} [2024-06-27 23:59:46,742 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 560 predicate places. [2024-06-27 23:59:46,742 INFO L495 AbstractCegarLoop]: Abstraction has has 590 places, 426 transitions, 5677 flow [2024-06-27 23:59:46,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:59:46,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:59:46,743 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 23:59:46,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2024-06-27 23:59:46,743 INFO L420 AbstractCegarLoop]: === Iteration 223 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:59:46,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:59:46,743 INFO L85 PathProgramCache]: Analyzing trace with hash -185964447, now seen corresponding path program 38 times [2024-06-27 23:59:46,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:59:46,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133552769] [2024-06-27 23:59:46,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:59:46,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:59:46,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:59:48,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:59:48,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:59:48,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133552769] [2024-06-27 23:59:48,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133552769] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:59:48,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:59:48,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:59:48,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040786237] [2024-06-27 23:59:48,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:59:48,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:59:48,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:59:48,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:59:48,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:59:48,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:59:48,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 590 places, 426 transitions, 5677 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:59:48,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:59:48,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:59:48,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:59:48,942 INFO L124 PetriNetUnfolderBase]: 1044/2013 cut-off events. [2024-06-27 23:59:48,942 INFO L125 PetriNetUnfolderBase]: For 401150/401150 co-relation queries the response was YES. [2024-06-27 23:59:48,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14722 conditions, 2013 events. 1044/2013 cut-off events. For 401150/401150 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 12927 event pairs, 209 based on Foata normal form. 2/2015 useless extension candidates. Maximal degree in co-relation 14503. Up to 1503 conditions per place. [2024-06-27 23:59:48,974 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 290 selfloop transitions, 145 changer transitions 0/437 dead transitions. [2024-06-27 23:59:48,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 599 places, 437 transitions, 6571 flow [2024-06-27 23:59:48,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:59:48,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:59:48,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-27 23:59:48,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-27 23:59:48,975 INFO L175 Difference]: Start difference. First operand has 590 places, 426 transitions, 5677 flow. Second operand 10 states and 125 transitions. [2024-06-27 23:59:48,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 599 places, 437 transitions, 6571 flow [2024-06-27 23:59:51,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 588 places, 437 transitions, 5992 flow, removed 25 selfloop flow, removed 11 redundant places. [2024-06-27 23:59:51,311 INFO L231 Difference]: Finished difference. Result has 589 places, 426 transitions, 5392 flow [2024-06-27 23:59:51,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5098, PETRI_DIFFERENCE_MINUEND_PLACES=579, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5392, PETRI_PLACES=589, PETRI_TRANSITIONS=426} [2024-06-27 23:59:51,311 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 559 predicate places. [2024-06-27 23:59:51,311 INFO L495 AbstractCegarLoop]: Abstraction has has 589 places, 426 transitions, 5392 flow [2024-06-27 23:59:51,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:59:51,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:59:51,311 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 23:59:51,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2024-06-27 23:59:51,311 INFO L420 AbstractCegarLoop]: === Iteration 224 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:59:51,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:59:51,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1107125811, now seen corresponding path program 12 times [2024-06-27 23:59:51,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:59:51,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450715230] [2024-06-27 23:59:51,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:59:51,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:59:51,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:59:52,608 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 23:59:52,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:59:52,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450715230] [2024-06-27 23:59:52,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450715230] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:59:52,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:59:52,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:59:52,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379793843] [2024-06-27 23:59:52,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:59:52,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:59:52,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:59:52,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:59:52,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:59:52,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:59:52,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 589 places, 426 transitions, 5392 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:59:52,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:59:52,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:59:52,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:59:53,269 INFO L124 PetriNetUnfolderBase]: 1048/2021 cut-off events. [2024-06-27 23:59:53,270 INFO L125 PetriNetUnfolderBase]: For 405576/405576 co-relation queries the response was YES. [2024-06-27 23:59:53,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14230 conditions, 2021 events. 1048/2021 cut-off events. For 405576/405576 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 13001 event pairs, 211 based on Foata normal form. 2/2023 useless extension candidates. Maximal degree in co-relation 14013. Up to 1693 conditions per place. [2024-06-27 23:59:53,299 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 318 selfloop transitions, 121 changer transitions 0/441 dead transitions. [2024-06-27 23:59:53,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 599 places, 441 transitions, 6360 flow [2024-06-27 23:59:53,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:59:53,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:59:53,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-27 23:59:53,300 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-27 23:59:53,300 INFO L175 Difference]: Start difference. First operand has 589 places, 426 transitions, 5392 flow. Second operand 11 states and 132 transitions. [2024-06-27 23:59:53,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 599 places, 441 transitions, 6360 flow [2024-06-27 23:59:55,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 589 places, 441 transitions, 5923 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-27 23:59:55,423 INFO L231 Difference]: Finished difference. Result has 590 places, 429 transitions, 5267 flow [2024-06-27 23:59:55,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4955, PETRI_DIFFERENCE_MINUEND_PLACES=579, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5267, PETRI_PLACES=590, PETRI_TRANSITIONS=429} [2024-06-27 23:59:55,423 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 560 predicate places. [2024-06-27 23:59:55,423 INFO L495 AbstractCegarLoop]: Abstraction has has 590 places, 429 transitions, 5267 flow [2024-06-27 23:59:55,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:59:55,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:59:55,424 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 23:59:55,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2024-06-27 23:59:55,424 INFO L420 AbstractCegarLoop]: === Iteration 225 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:59:55,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:59:55,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1107135111, now seen corresponding path program 13 times [2024-06-27 23:59:55,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:59:55,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807685857] [2024-06-27 23:59:55,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:59:55,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:59:55,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:59:56,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:59:56,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:59:56,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807685857] [2024-06-27 23:59:56,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807685857] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:59:56,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:59:56,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:59:56,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115077532] [2024-06-27 23:59:56,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:59:56,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:59:56,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:59:56,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:59:56,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:59:56,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:59:56,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 590 places, 429 transitions, 5267 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:59:56,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:59:56,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:59:56,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:59:57,425 INFO L124 PetriNetUnfolderBase]: 1075/2082 cut-off events. [2024-06-27 23:59:57,426 INFO L125 PetriNetUnfolderBase]: For 575236/575236 co-relation queries the response was YES. [2024-06-27 23:59:57,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15310 conditions, 2082 events. 1075/2082 cut-off events. For 575236/575236 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 13403 event pairs, 220 based on Foata normal form. 8/2090 useless extension candidates. Maximal degree in co-relation 15093. Up to 1471 conditions per place. [2024-06-27 23:59:57,453 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 292 selfloop transitions, 146 changer transitions 7/448 dead transitions. [2024-06-27 23:59:57,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 600 places, 448 transitions, 6635 flow [2024-06-27 23:59:57,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:59:57,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:59:57,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 153 transitions. [2024-06-27 23:59:57,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44868035190615835 [2024-06-27 23:59:57,454 INFO L175 Difference]: Start difference. First operand has 590 places, 429 transitions, 5267 flow. Second operand 11 states and 153 transitions. [2024-06-27 23:59:57,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 600 places, 448 transitions, 6635 flow [2024-06-28 00:00:00,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 594 places, 448 transitions, 6418 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-28 00:00:00,383 INFO L231 Difference]: Finished difference. Result has 595 places, 426 transitions, 5297 flow [2024-06-28 00:00:00,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5050, PETRI_DIFFERENCE_MINUEND_PLACES=584, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5297, PETRI_PLACES=595, PETRI_TRANSITIONS=426} [2024-06-28 00:00:00,384 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 565 predicate places. [2024-06-28 00:00:00,384 INFO L495 AbstractCegarLoop]: Abstraction has has 595 places, 426 transitions, 5297 flow [2024-06-28 00:00:00,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:00,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:00:00,384 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:00:00,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2024-06-28 00:00:00,384 INFO L420 AbstractCegarLoop]: === Iteration 226 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:00:00,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:00:00,385 INFO L85 PathProgramCache]: Analyzing trace with hash 700557998, now seen corresponding path program 1 times [2024-06-28 00:00:00,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:00:00,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891421814] [2024-06-28 00:00:00,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:00:00,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:00:00,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:00:01,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:00:01,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:00:01,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891421814] [2024-06-28 00:00:01,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891421814] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:00:01,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:00:01,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:00:01,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78754720] [2024-06-28 00:00:01,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:00:01,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:00:01,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:00:01,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:00:01,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:00:01,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:00:01,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 595 places, 426 transitions, 5297 flow. Second operand has 11 states, 11 states have (on average 7.545454545454546) internal successors, (83), 11 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:01,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:00:01,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:00:01,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:00:02,533 INFO L124 PetriNetUnfolderBase]: 1065/2064 cut-off events. [2024-06-28 00:00:02,533 INFO L125 PetriNetUnfolderBase]: For 559611/559611 co-relation queries the response was YES. [2024-06-28 00:00:02,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15309 conditions, 2064 events. 1065/2064 cut-off events. For 559611/559611 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 13277 event pairs, 173 based on Foata normal form. 6/2070 useless extension candidates. Maximal degree in co-relation 15089. Up to 1780 conditions per place. [2024-06-28 00:00:02,567 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 388 selfloop transitions, 13 changer transitions 43/446 dead transitions. [2024-06-28 00:00:02,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 602 places, 446 transitions, 6247 flow [2024-06-28 00:00:02,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:00:02,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:00:02,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-28 00:00:02,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36451612903225805 [2024-06-28 00:00:02,568 INFO L175 Difference]: Start difference. First operand has 595 places, 426 transitions, 5297 flow. Second operand 10 states and 113 transitions. [2024-06-28 00:00:02,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 602 places, 446 transitions, 6247 flow [2024-06-28 00:00:05,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 586 places, 446 transitions, 5657 flow, removed 7 selfloop flow, removed 16 redundant places. [2024-06-28 00:00:05,571 INFO L231 Difference]: Finished difference. Result has 587 places, 399 transitions, 4464 flow [2024-06-28 00:00:05,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4707, PETRI_DIFFERENCE_MINUEND_PLACES=577, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=413, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4464, PETRI_PLACES=587, PETRI_TRANSITIONS=399} [2024-06-28 00:00:05,572 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 557 predicate places. [2024-06-28 00:00:05,572 INFO L495 AbstractCegarLoop]: Abstraction has has 587 places, 399 transitions, 4464 flow [2024-06-28 00:00:05,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.545454545454546) internal successors, (83), 11 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:05,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:00:05,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:00:05,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2024-06-28 00:00:05,572 INFO L420 AbstractCegarLoop]: === Iteration 227 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:00:05,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:00:05,573 INFO L85 PathProgramCache]: Analyzing trace with hash -327008440, now seen corresponding path program 2 times [2024-06-28 00:00:05,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:00:05,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126139845] [2024-06-28 00:00:05,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:00:05,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:00:05,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:00:07,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:00:07,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:00:07,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126139845] [2024-06-28 00:00:07,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126139845] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:00:07,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:00:07,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:00:07,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611505460] [2024-06-28 00:00:07,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:00:07,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:00:07,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:00:07,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:00:07,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:00:07,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:00:07,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 587 places, 399 transitions, 4464 flow. Second operand has 11 states, 11 states have (on average 7.545454545454546) internal successors, (83), 11 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:07,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:00:07,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:00:07,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:00:07,760 INFO L124 PetriNetUnfolderBase]: 960/1859 cut-off events. [2024-06-28 00:00:07,760 INFO L125 PetriNetUnfolderBase]: For 517424/517424 co-relation queries the response was YES. [2024-06-28 00:00:07,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13455 conditions, 1859 events. 960/1859 cut-off events. For 517424/517424 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11658 event pairs, 145 based on Foata normal form. 6/1865 useless extension candidates. Maximal degree in co-relation 13254. Up to 1386 conditions per place. [2024-06-28 00:00:07,793 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 338 selfloop transitions, 49 changer transitions 27/416 dead transitions. [2024-06-28 00:00:07,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 571 places, 416 transitions, 5346 flow [2024-06-28 00:00:07,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:00:07,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:00:07,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-28 00:00:07,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3741935483870968 [2024-06-28 00:00:07,794 INFO L175 Difference]: Start difference. First operand has 587 places, 399 transitions, 4464 flow. Second operand 10 states and 116 transitions. [2024-06-28 00:00:07,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 571 places, 416 transitions, 5346 flow [2024-06-28 00:00:10,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 553 places, 416 transitions, 5248 flow, removed 11 selfloop flow, removed 18 redundant places. [2024-06-28 00:00:10,511 INFO L231 Difference]: Finished difference. Result has 554 places, 382 transitions, 4297 flow [2024-06-28 00:00:10,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4366, PETRI_DIFFERENCE_MINUEND_PLACES=544, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4297, PETRI_PLACES=554, PETRI_TRANSITIONS=382} [2024-06-28 00:00:10,512 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 524 predicate places. [2024-06-28 00:00:10,512 INFO L495 AbstractCegarLoop]: Abstraction has has 554 places, 382 transitions, 4297 flow [2024-06-28 00:00:10,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.545454545454546) internal successors, (83), 11 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:10,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:00:10,513 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:00:10,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2024-06-28 00:00:10,513 INFO L420 AbstractCegarLoop]: === Iteration 228 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:00:10,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:00:10,514 INFO L85 PathProgramCache]: Analyzing trace with hash -211544290, now seen corresponding path program 3 times [2024-06-28 00:00:10,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:00:10,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316237852] [2024-06-28 00:00:10,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:00:10,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:00:10,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:00:12,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:00:12,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:00:12,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316237852] [2024-06-28 00:00:12,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316237852] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:00:12,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:00:12,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 00:00:12,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963482762] [2024-06-28 00:00:12,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:00:12,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 00:00:12,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:00:12,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 00:00:12,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 00:00:12,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:00:12,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 554 places, 382 transitions, 4297 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:12,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:00:12,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:00:12,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:00:13,402 INFO L124 PetriNetUnfolderBase]: 910/1773 cut-off events. [2024-06-28 00:00:13,402 INFO L125 PetriNetUnfolderBase]: For 468786/468786 co-relation queries the response was YES. [2024-06-28 00:00:13,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12938 conditions, 1773 events. 910/1773 cut-off events. For 468786/468786 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 11022 event pairs, 150 based on Foata normal form. 6/1779 useless extension candidates. Maximal degree in co-relation 12747. Up to 1596 conditions per place. [2024-06-28 00:00:13,442 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 331 selfloop transitions, 62 changer transitions 9/404 dead transitions. [2024-06-28 00:00:13,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 552 places, 404 transitions, 5204 flow [2024-06-28 00:00:13,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:00:13,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:00:13,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 121 transitions. [2024-06-28 00:00:13,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32526881720430106 [2024-06-28 00:00:13,446 INFO L175 Difference]: Start difference. First operand has 554 places, 382 transitions, 4297 flow. Second operand 12 states and 121 transitions. [2024-06-28 00:00:13,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 552 places, 404 transitions, 5204 flow [2024-06-28 00:00:15,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 537 places, 404 transitions, 5049 flow, removed 6 selfloop flow, removed 15 redundant places. [2024-06-28 00:00:15,901 INFO L231 Difference]: Finished difference. Result has 540 places, 383 transitions, 4290 flow [2024-06-28 00:00:15,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4152, PETRI_DIFFERENCE_MINUEND_PLACES=526, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4290, PETRI_PLACES=540, PETRI_TRANSITIONS=383} [2024-06-28 00:00:15,901 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 510 predicate places. [2024-06-28 00:00:15,902 INFO L495 AbstractCegarLoop]: Abstraction has has 540 places, 383 transitions, 4290 flow [2024-06-28 00:00:15,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:15,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:00:15,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:00:15,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2024-06-28 00:00:15,902 INFO L420 AbstractCegarLoop]: === Iteration 229 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:00:15,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:00:15,902 INFO L85 PathProgramCache]: Analyzing trace with hash -211717270, now seen corresponding path program 4 times [2024-06-28 00:00:15,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:00:15,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659467416] [2024-06-28 00:00:15,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:00:15,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:00:15,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:00:17,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:00:17,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:00:17,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659467416] [2024-06-28 00:00:17,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659467416] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:00:17,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:00:17,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:00:17,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259570609] [2024-06-28 00:00:17,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:00:17,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:00:17,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:00:17,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:00:17,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:00:17,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:00:17,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 540 places, 383 transitions, 4290 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:17,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:00:17,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:00:17,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:00:18,607 INFO L124 PetriNetUnfolderBase]: 907/1768 cut-off events. [2024-06-28 00:00:18,607 INFO L125 PetriNetUnfolderBase]: For 445201/445201 co-relation queries the response was YES. [2024-06-28 00:00:18,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12760 conditions, 1768 events. 907/1768 cut-off events. For 445201/445201 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 10982 event pairs, 150 based on Foata normal form. 6/1774 useless extension candidates. Maximal degree in co-relation 12572. Up to 1586 conditions per place. [2024-06-28 00:00:18,640 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 337 selfloop transitions, 52 changer transitions 12/403 dead transitions. [2024-06-28 00:00:18,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 548 places, 403 transitions, 5163 flow [2024-06-28 00:00:18,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:00:18,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:00:18,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-28 00:00:18,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33724340175953077 [2024-06-28 00:00:18,642 INFO L175 Difference]: Start difference. First operand has 540 places, 383 transitions, 4290 flow. Second operand 11 states and 115 transitions. [2024-06-28 00:00:18,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 548 places, 403 transitions, 5163 flow [2024-06-28 00:00:20,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 537 places, 403 transitions, 5034 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-28 00:00:20,874 INFO L231 Difference]: Finished difference. Result has 539 places, 380 transitions, 4224 flow [2024-06-28 00:00:20,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4161, PETRI_DIFFERENCE_MINUEND_PLACES=527, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4224, PETRI_PLACES=539, PETRI_TRANSITIONS=380} [2024-06-28 00:00:20,876 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 509 predicate places. [2024-06-28 00:00:20,877 INFO L495 AbstractCegarLoop]: Abstraction has has 539 places, 380 transitions, 4224 flow [2024-06-28 00:00:20,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:20,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:00:20,877 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:00:20,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2024-06-28 00:00:20,877 INFO L420 AbstractCegarLoop]: === Iteration 230 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:00:20,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:00:20,878 INFO L85 PathProgramCache]: Analyzing trace with hash -216185920, now seen corresponding path program 5 times [2024-06-28 00:00:20,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:00:20,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605574665] [2024-06-28 00:00:20,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:00:20,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:00:20,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:00:22,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:00:22,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:00:22,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605574665] [2024-06-28 00:00:22,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605574665] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:00:22,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:00:22,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:00:22,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550167145] [2024-06-28 00:00:22,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:00:22,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:00:22,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:00:22,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:00:22,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:00:22,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:00:22,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 539 places, 380 transitions, 4224 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:22,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:00:22,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:00:22,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:00:23,351 INFO L124 PetriNetUnfolderBase]: 896/1747 cut-off events. [2024-06-28 00:00:23,351 INFO L125 PetriNetUnfolderBase]: For 445297/445297 co-relation queries the response was YES. [2024-06-28 00:00:23,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12659 conditions, 1747 events. 896/1747 cut-off events. For 445297/445297 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 10843 event pairs, 142 based on Foata normal form. 6/1753 useless extension candidates. Maximal degree in co-relation 12472. Up to 1390 conditions per place. [2024-06-28 00:00:23,383 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 315 selfloop transitions, 54 changer transitions 25/396 dead transitions. [2024-06-28 00:00:23,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 545 places, 396 transitions, 5064 flow [2024-06-28 00:00:23,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:00:23,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:00:23,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-28 00:00:23,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-28 00:00:23,385 INFO L175 Difference]: Start difference. First operand has 539 places, 380 transitions, 4224 flow. Second operand 10 states and 105 transitions. [2024-06-28 00:00:23,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 545 places, 396 transitions, 5064 flow [2024-06-28 00:00:25,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 534 places, 396 transitions, 4913 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 00:00:25,561 INFO L231 Difference]: Finished difference. Result has 535 places, 363 transitions, 3970 flow [2024-06-28 00:00:25,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4073, PETRI_DIFFERENCE_MINUEND_PLACES=525, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3970, PETRI_PLACES=535, PETRI_TRANSITIONS=363} [2024-06-28 00:00:25,562 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 505 predicate places. [2024-06-28 00:00:25,562 INFO L495 AbstractCegarLoop]: Abstraction has has 535 places, 363 transitions, 3970 flow [2024-06-28 00:00:25,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:25,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:00:25,562 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:00:25,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2024-06-28 00:00:25,562 INFO L420 AbstractCegarLoop]: === Iteration 231 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:00:25,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:00:25,563 INFO L85 PathProgramCache]: Analyzing trace with hash 642021652, now seen corresponding path program 6 times [2024-06-28 00:00:25,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:00:25,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588069115] [2024-06-28 00:00:25,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:00:25,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:00:25,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:00:27,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:00:27,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:00:27,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588069115] [2024-06-28 00:00:27,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588069115] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:00:27,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:00:27,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:00:27,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773928253] [2024-06-28 00:00:27,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:00:27,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:00:27,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:00:27,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:00:27,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:00:27,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:00:27,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 535 places, 363 transitions, 3970 flow. Second operand has 11 states, 11 states have (on average 7.545454545454546) internal successors, (83), 11 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:27,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:00:27,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:00:27,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:00:27,842 INFO L124 PetriNetUnfolderBase]: 849/1654 cut-off events. [2024-06-28 00:00:27,842 INFO L125 PetriNetUnfolderBase]: For 439155/439155 co-relation queries the response was YES. [2024-06-28 00:00:27,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12222 conditions, 1654 events. 849/1654 cut-off events. For 439155/439155 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 10110 event pairs, 140 based on Foata normal form. 6/1660 useless extension candidates. Maximal degree in co-relation 12036. Up to 1386 conditions per place. [2024-06-28 00:00:27,865 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 300 selfloop transitions, 63 changer transitions 13/378 dead transitions. [2024-06-28 00:00:27,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 536 places, 378 transitions, 4772 flow [2024-06-28 00:00:27,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:00:27,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:00:27,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-28 00:00:27,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3519061583577713 [2024-06-28 00:00:27,866 INFO L175 Difference]: Start difference. First operand has 535 places, 363 transitions, 3970 flow. Second operand 11 states and 120 transitions. [2024-06-28 00:00:27,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 536 places, 378 transitions, 4772 flow [2024-06-28 00:00:29,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 508 places, 378 transitions, 4515 flow, removed 9 selfloop flow, removed 28 redundant places. [2024-06-28 00:00:29,864 INFO L231 Difference]: Finished difference. Result has 509 places, 356 transitions, 3772 flow [2024-06-28 00:00:29,865 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3713, PETRI_DIFFERENCE_MINUEND_PLACES=498, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3772, PETRI_PLACES=509, PETRI_TRANSITIONS=356} [2024-06-28 00:00:29,865 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 479 predicate places. [2024-06-28 00:00:29,865 INFO L495 AbstractCegarLoop]: Abstraction has has 509 places, 356 transitions, 3772 flow [2024-06-28 00:00:29,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.545454545454546) internal successors, (83), 11 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:29,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:00:29,865 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:00:29,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2024-06-28 00:00:29,865 INFO L420 AbstractCegarLoop]: === Iteration 232 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:00:29,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:00:29,866 INFO L85 PathProgramCache]: Analyzing trace with hash 2012544296, now seen corresponding path program 7 times [2024-06-28 00:00:29,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:00:29,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900144700] [2024-06-28 00:00:29,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:00:29,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:00:29,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:00:31,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:00:31,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:00:31,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900144700] [2024-06-28 00:00:31,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900144700] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:00:31,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:00:31,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:00:31,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314720906] [2024-06-28 00:00:31,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:00:31,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:00:31,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:00:31,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:00:31,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:00:31,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:00:31,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 509 places, 356 transitions, 3772 flow. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:31,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:00:31,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:00:31,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:00:32,131 INFO L124 PetriNetUnfolderBase]: 827/1616 cut-off events. [2024-06-28 00:00:32,131 INFO L125 PetriNetUnfolderBase]: For 399424/399424 co-relation queries the response was YES. [2024-06-28 00:00:32,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11720 conditions, 1616 events. 827/1616 cut-off events. For 399424/399424 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 9810 event pairs, 142 based on Foata normal form. 6/1622 useless extension candidates. Maximal degree in co-relation 11544. Up to 1382 conditions per place. [2024-06-28 00:00:32,153 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 282 selfloop transitions, 63 changer transitions 23/370 dead transitions. [2024-06-28 00:00:32,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 513 places, 370 transitions, 4556 flow [2024-06-28 00:00:32,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:00:32,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:00:32,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-28 00:00:32,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489736070381232 [2024-06-28 00:00:32,158 INFO L175 Difference]: Start difference. First operand has 509 places, 356 transitions, 3772 flow. Second operand 11 states and 119 transitions. [2024-06-28 00:00:32,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 513 places, 370 transitions, 4556 flow [2024-06-28 00:00:33,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 499 places, 370 transitions, 4404 flow, removed 5 selfloop flow, removed 14 redundant places. [2024-06-28 00:00:33,883 INFO L231 Difference]: Finished difference. Result has 500 places, 339 transitions, 3512 flow [2024-06-28 00:00:33,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3620, PETRI_DIFFERENCE_MINUEND_PLACES=489, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3512, PETRI_PLACES=500, PETRI_TRANSITIONS=339} [2024-06-28 00:00:33,883 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 470 predicate places. [2024-06-28 00:00:33,883 INFO L495 AbstractCegarLoop]: Abstraction has has 500 places, 339 transitions, 3512 flow [2024-06-28 00:00:33,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:33,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:00:33,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:00:33,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2024-06-28 00:00:33,884 INFO L420 AbstractCegarLoop]: === Iteration 233 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:00:33,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:00:33,884 INFO L85 PathProgramCache]: Analyzing trace with hash -499664758, now seen corresponding path program 8 times [2024-06-28 00:00:33,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:00:33,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924253433] [2024-06-28 00:00:33,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:00:33,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:00:33,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:00:35,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:00:35,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:00:35,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924253433] [2024-06-28 00:00:35,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924253433] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:00:35,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:00:35,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 00:00:35,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515801487] [2024-06-28 00:00:35,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:00:35,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 00:00:35,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:00:35,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 00:00:35,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 00:00:35,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:00:35,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 500 places, 339 transitions, 3512 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:35,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:00:35,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:00:35,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:00:36,139 INFO L124 PetriNetUnfolderBase]: 801/1557 cut-off events. [2024-06-28 00:00:36,139 INFO L125 PetriNetUnfolderBase]: For 382881/382881 co-relation queries the response was YES. [2024-06-28 00:00:36,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11258 conditions, 1557 events. 801/1557 cut-off events. For 382881/382881 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 9336 event pairs, 105 based on Foata normal form. 6/1563 useless extension candidates. Maximal degree in co-relation 11086. Up to 834 conditions per place. [2024-06-28 00:00:36,159 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 274 selfloop transitions, 48 changer transitions 32/356 dead transitions. [2024-06-28 00:00:36,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 505 places, 356 transitions, 4274 flow [2024-06-28 00:00:36,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:00:36,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:00:36,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-28 00:00:36,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35777126099706746 [2024-06-28 00:00:36,160 INFO L175 Difference]: Start difference. First operand has 500 places, 339 transitions, 3512 flow. Second operand 11 states and 122 transitions. [2024-06-28 00:00:36,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 505 places, 356 transitions, 4274 flow [2024-06-28 00:00:37,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 356 transitions, 3835 flow, removed 18 selfloop flow, removed 49 redundant places. [2024-06-28 00:00:37,817 INFO L231 Difference]: Finished difference. Result has 457 places, 317 transitions, 3043 flow [2024-06-28 00:00:37,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3073, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3043, PETRI_PLACES=457, PETRI_TRANSITIONS=317} [2024-06-28 00:00:37,818 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 427 predicate places. [2024-06-28 00:00:37,818 INFO L495 AbstractCegarLoop]: Abstraction has has 457 places, 317 transitions, 3043 flow [2024-06-28 00:00:37,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:37,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:00:37,818 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:00:37,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232 [2024-06-28 00:00:37,818 INFO L420 AbstractCegarLoop]: === Iteration 234 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:00:37,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:00:37,818 INFO L85 PathProgramCache]: Analyzing trace with hash -388842238, now seen corresponding path program 9 times [2024-06-28 00:00:37,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:00:37,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741706428] [2024-06-28 00:00:37,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:00:37,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:00:37,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:00:39,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:00:39,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:00:39,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741706428] [2024-06-28 00:00:39,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741706428] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:00:39,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:00:39,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 00:00:39,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395281591] [2024-06-28 00:00:39,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:00:39,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 00:00:39,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:00:39,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 00:00:39,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 00:00:39,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:00:39,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 317 transitions, 3043 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:39,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:00:39,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:00:39,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:00:40,172 INFO L124 PetriNetUnfolderBase]: 723/1411 cut-off events. [2024-06-28 00:00:40,172 INFO L125 PetriNetUnfolderBase]: For 345816/345816 co-relation queries the response was YES. [2024-06-28 00:00:40,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10340 conditions, 1411 events. 723/1411 cut-off events. For 345816/345816 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 8288 event pairs, 109 based on Foata normal form. 6/1417 useless extension candidates. Maximal degree in co-relation 10179. Up to 1170 conditions per place. [2024-06-28 00:00:40,193 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 291 selfloop transitions, 25 changer transitions 18/336 dead transitions. [2024-06-28 00:00:40,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 336 transitions, 3771 flow [2024-06-28 00:00:40,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:00:40,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:00:40,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-28 00:00:40,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-28 00:00:40,194 INFO L175 Difference]: Start difference. First operand has 457 places, 317 transitions, 3043 flow. Second operand 11 states and 124 transitions. [2024-06-28 00:00:40,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 451 places, 336 transitions, 3771 flow [2024-06-28 00:00:41,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 336 transitions, 3598 flow, removed 11 selfloop flow, removed 25 redundant places. [2024-06-28 00:00:41,533 INFO L231 Difference]: Finished difference. Result has 427 places, 307 transitions, 2865 flow [2024-06-28 00:00:41,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2870, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2865, PETRI_PLACES=427, PETRI_TRANSITIONS=307} [2024-06-28 00:00:41,533 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 397 predicate places. [2024-06-28 00:00:41,534 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 307 transitions, 2865 flow [2024-06-28 00:00:41,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:41,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:00:41,534 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:00:41,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233 [2024-06-28 00:00:41,534 INFO L420 AbstractCegarLoop]: === Iteration 235 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:00:41,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:00:41,535 INFO L85 PathProgramCache]: Analyzing trace with hash -941979008, now seen corresponding path program 10 times [2024-06-28 00:00:41,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:00:41,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286160533] [2024-06-28 00:00:41,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:00:41,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:00:41,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:00:43,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:00:43,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:00:43,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286160533] [2024-06-28 00:00:43,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286160533] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:00:43,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:00:43,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:00:43,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217692647] [2024-06-28 00:00:43,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:00:43,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:00:43,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:00:43,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:00:43,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:00:43,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 00:00:43,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 307 transitions, 2865 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:43,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:00:43,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 00:00:43,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:00:43,767 INFO L124 PetriNetUnfolderBase]: 689/1349 cut-off events. [2024-06-28 00:00:43,767 INFO L125 PetriNetUnfolderBase]: For 308785/308785 co-relation queries the response was YES. [2024-06-28 00:00:43,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9806 conditions, 1349 events. 689/1349 cut-off events. For 308785/308785 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 7819 event pairs, 113 based on Foata normal form. 6/1355 useless extension candidates. Maximal degree in co-relation 9655. Up to 1200 conditions per place. [2024-06-28 00:00:43,788 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 279 selfloop transitions, 34 changer transitions 8/324 dead transitions. [2024-06-28 00:00:43,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 324 transitions, 3563 flow [2024-06-28 00:00:43,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:00:43,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:00:43,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-28 00:00:43,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3841642228739003 [2024-06-28 00:00:43,789 INFO L175 Difference]: Start difference. First operand has 427 places, 307 transitions, 2865 flow. Second operand 11 states and 131 transitions. [2024-06-28 00:00:43,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 324 transitions, 3563 flow [2024-06-28 00:00:44,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 324 transitions, 3497 flow, removed 8 selfloop flow, removed 15 redundant places. [2024-06-28 00:00:44,859 INFO L231 Difference]: Finished difference. Result has 413 places, 305 transitions, 2857 flow [2024-06-28 00:00:44,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2799, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2857, PETRI_PLACES=413, PETRI_TRANSITIONS=305} [2024-06-28 00:00:44,859 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 383 predicate places. [2024-06-28 00:00:44,859 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 305 transitions, 2857 flow [2024-06-28 00:00:44,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:44,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:00:44,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:00:44,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234 [2024-06-28 00:00:44,860 INFO L420 AbstractCegarLoop]: === Iteration 236 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:00:44,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:00:44,860 INFO L85 PathProgramCache]: Analyzing trace with hash -941782530, now seen corresponding path program 1 times [2024-06-28 00:00:44,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:00:44,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753863438] [2024-06-28 00:00:44,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:00:44,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:00:44,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:00:46,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:00:46,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:00:46,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753863438] [2024-06-28 00:00:46,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753863438] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:00:46,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:00:46,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:00:46,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554244672] [2024-06-28 00:00:46,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:00:46,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:00:46,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:00:46,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:00:46,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:00:46,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:00:46,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 305 transitions, 2857 flow. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:46,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:00:46,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:00:46,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:00:47,033 INFO L124 PetriNetUnfolderBase]: 687/1348 cut-off events. [2024-06-28 00:00:47,034 INFO L125 PetriNetUnfolderBase]: For 291980/291980 co-relation queries the response was YES. [2024-06-28 00:00:47,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9651 conditions, 1348 events. 687/1348 cut-off events. For 291980/291980 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 7812 event pairs, 110 based on Foata normal form. 8/1356 useless extension candidates. Maximal degree in co-relation 9507. Up to 1021 conditions per place. [2024-06-28 00:00:47,050 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 228 selfloop transitions, 69 changer transitions 20/319 dead transitions. [2024-06-28 00:00:47,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 319 transitions, 3577 flow [2024-06-28 00:00:47,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:00:47,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:00:47,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-28 00:00:47,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35777126099706746 [2024-06-28 00:00:47,051 INFO L175 Difference]: Start difference. First operand has 413 places, 305 transitions, 2857 flow. Second operand 11 states and 122 transitions. [2024-06-28 00:00:47,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 319 transitions, 3577 flow [2024-06-28 00:00:47,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 319 transitions, 3505 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 00:00:47,916 INFO L231 Difference]: Finished difference. Result has 411 places, 291 transitions, 2804 flow [2024-06-28 00:00:47,916 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2785, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2804, PETRI_PLACES=411, PETRI_TRANSITIONS=291} [2024-06-28 00:00:47,916 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 381 predicate places. [2024-06-28 00:00:47,916 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 291 transitions, 2804 flow [2024-06-28 00:00:47,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:47,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:00:47,916 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:00:47,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable235 [2024-06-28 00:00:47,916 INFO L420 AbstractCegarLoop]: === Iteration 237 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:00:47,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:00:47,917 INFO L85 PathProgramCache]: Analyzing trace with hash -384373588, now seen corresponding path program 11 times [2024-06-28 00:00:47,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:00:47,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759109809] [2024-06-28 00:00:47,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:00:47,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:00:47,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:00:49,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:00:49,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:00:49,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759109809] [2024-06-28 00:00:49,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759109809] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:00:49,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:00:49,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 00:00:49,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992714917] [2024-06-28 00:00:49,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:00:49,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 00:00:49,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:00:49,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 00:00:49,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-06-28 00:00:50,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:00:50,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 291 transitions, 2804 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:50,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:00:50,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:00:50,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:00:50,667 INFO L124 PetriNetUnfolderBase]: 658/1308 cut-off events. [2024-06-28 00:00:50,668 INFO L125 PetriNetUnfolderBase]: For 273574/273574 co-relation queries the response was YES. [2024-06-28 00:00:50,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9424 conditions, 1308 events. 658/1308 cut-off events. For 273574/273574 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 7621 event pairs, 102 based on Foata normal form. 6/1314 useless extension candidates. Maximal degree in co-relation 9281. Up to 1147 conditions per place. [2024-06-28 00:00:50,685 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 251 selfloop transitions, 7 changer transitions 49/309 dead transitions. [2024-06-28 00:00:50,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 309 transitions, 3476 flow [2024-06-28 00:00:50,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:00:50,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:00:50,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-28 00:00:50,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33602150537634407 [2024-06-28 00:00:50,686 INFO L175 Difference]: Start difference. First operand has 411 places, 291 transitions, 2804 flow. Second operand 12 states and 125 transitions. [2024-06-28 00:00:50,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 309 transitions, 3476 flow [2024-06-28 00:00:51,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 309 transitions, 3284 flow, removed 8 selfloop flow, removed 13 redundant places. [2024-06-28 00:00:51,709 INFO L231 Difference]: Finished difference. Result has 405 places, 256 transitions, 2311 flow [2024-06-28 00:00:51,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2614, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2311, PETRI_PLACES=405, PETRI_TRANSITIONS=256} [2024-06-28 00:00:51,710 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 375 predicate places. [2024-06-28 00:00:51,710 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 256 transitions, 2311 flow [2024-06-28 00:00:51,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:51,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:00:51,710 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:00:51,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236 [2024-06-28 00:00:51,710 INFO L420 AbstractCegarLoop]: === Iteration 238 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:00:51,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:00:51,710 INFO L85 PathProgramCache]: Analyzing trace with hash 735602748, now seen corresponding path program 12 times [2024-06-28 00:00:51,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:00:51,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105373113] [2024-06-28 00:00:51,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:00:51,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:00:51,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:00:53,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:00:53,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:00:53,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105373113] [2024-06-28 00:00:53,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105373113] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:00:53,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:00:53,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:00:53,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710897085] [2024-06-28 00:00:53,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:00:53,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:00:53,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:00:53,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:00:53,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:00:53,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:00:53,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 256 transitions, 2311 flow. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:53,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:00:53,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:00:53,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:00:53,822 INFO L124 PetriNetUnfolderBase]: 601/1187 cut-off events. [2024-06-28 00:00:53,822 INFO L125 PetriNetUnfolderBase]: For 264844/264844 co-relation queries the response was YES. [2024-06-28 00:00:53,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8588 conditions, 1187 events. 601/1187 cut-off events. For 264844/264844 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 6798 event pairs, 96 based on Foata normal form. 6/1193 useless extension candidates. Maximal degree in co-relation 8449. Up to 875 conditions per place. [2024-06-28 00:00:53,837 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 214 selfloop transitions, 34 changer transitions 21/271 dead transitions. [2024-06-28 00:00:53,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 271 transitions, 2897 flow [2024-06-28 00:00:53,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:00:53,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:00:53,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-28 00:00:53,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36451612903225805 [2024-06-28 00:00:53,837 INFO L175 Difference]: Start difference. First operand has 405 places, 256 transitions, 2311 flow. Second operand 10 states and 113 transitions. [2024-06-28 00:00:53,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 271 transitions, 2897 flow [2024-06-28 00:00:54,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 271 transitions, 2836 flow, removed 19 selfloop flow, removed 20 redundant places. [2024-06-28 00:00:54,763 INFO L231 Difference]: Finished difference. Result has 362 places, 241 transitions, 2227 flow [2024-06-28 00:00:54,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2250, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2227, PETRI_PLACES=362, PETRI_TRANSITIONS=241} [2024-06-28 00:00:54,763 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 332 predicate places. [2024-06-28 00:00:54,763 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 241 transitions, 2227 flow [2024-06-28 00:00:54,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:54,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:00:54,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:00:54,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237 [2024-06-28 00:00:54,764 INFO L420 AbstractCegarLoop]: === Iteration 239 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:00:54,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:00:54,764 INFO L85 PathProgramCache]: Analyzing trace with hash 812533154, now seen corresponding path program 13 times [2024-06-28 00:00:54,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:00:54,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143697983] [2024-06-28 00:00:54,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:00:54,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:00:54,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:00:56,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:00:56,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:00:56,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143697983] [2024-06-28 00:00:56,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143697983] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:00:56,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:00:56,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 00:00:56,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611975239] [2024-06-28 00:00:56,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:00:56,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 00:00:56,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:00:56,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 00:00:56,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 00:00:56,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:00:56,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 241 transitions, 2227 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:56,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:00:56,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:00:56,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:00:57,116 INFO L124 PetriNetUnfolderBase]: 553/1103 cut-off events. [2024-06-28 00:00:57,116 INFO L125 PetriNetUnfolderBase]: For 216454/216454 co-relation queries the response was YES. [2024-06-28 00:00:57,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7850 conditions, 1103 events. 553/1103 cut-off events. For 216454/216454 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 6207 event pairs, 82 based on Foata normal form. 6/1109 useless extension candidates. Maximal degree in co-relation 7723. Up to 787 conditions per place. [2024-06-28 00:00:57,129 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 212 selfloop transitions, 21 changer transitions 22/257 dead transitions. [2024-06-28 00:00:57,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 257 transitions, 2787 flow [2024-06-28 00:00:57,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:00:57,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:00:57,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 107 transitions. [2024-06-28 00:00:57,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31378299120234604 [2024-06-28 00:00:57,130 INFO L175 Difference]: Start difference. First operand has 362 places, 241 transitions, 2227 flow. Second operand 11 states and 107 transitions. [2024-06-28 00:00:57,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 257 transitions, 2787 flow [2024-06-28 00:00:57,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 257 transitions, 2691 flow, removed 10 selfloop flow, removed 19 redundant places. [2024-06-28 00:00:57,850 INFO L231 Difference]: Finished difference. Result has 343 places, 227 transitions, 2091 flow [2024-06-28 00:00:57,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2131, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2091, PETRI_PLACES=343, PETRI_TRANSITIONS=227} [2024-06-28 00:00:57,851 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 313 predicate places. [2024-06-28 00:00:57,851 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 227 transitions, 2091 flow [2024-06-28 00:00:57,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:57,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:00:57,851 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:00:57,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238 [2024-06-28 00:00:57,851 INFO L420 AbstractCegarLoop]: === Iteration 240 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:00:57,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:00:57,851 INFO L85 PathProgramCache]: Analyzing trace with hash 817174784, now seen corresponding path program 14 times [2024-06-28 00:00:57,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:00:57,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622458134] [2024-06-28 00:00:57,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:00:57,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:00:57,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:00:59,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:00:59,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:00:59,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622458134] [2024-06-28 00:00:59,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622458134] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:00:59,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:00:59,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 00:00:59,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645641766] [2024-06-28 00:00:59,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:00:59,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 00:00:59,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:00:59,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 00:00:59,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 00:00:59,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:00:59,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 227 transitions, 2091 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:59,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:00:59,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:00:59,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:00,338 INFO L124 PetriNetUnfolderBase]: 505/1015 cut-off events. [2024-06-28 00:01:00,338 INFO L125 PetriNetUnfolderBase]: For 181476/181476 co-relation queries the response was YES. [2024-06-28 00:01:00,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7278 conditions, 1015 events. 505/1015 cut-off events. For 181476/181476 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 5588 event pairs, 84 based on Foata normal form. 6/1021 useless extension candidates. Maximal degree in co-relation 7160. Up to 771 conditions per place. [2024-06-28 00:01:00,348 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 157 selfloop transitions, 3 changer transitions 79/241 dead transitions. [2024-06-28 00:01:00,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 241 transitions, 2615 flow [2024-06-28 00:01:00,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:01:00,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:01:00,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-28 00:01:00,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34310850439882695 [2024-06-28 00:01:00,349 INFO L175 Difference]: Start difference. First operand has 343 places, 227 transitions, 2091 flow. Second operand 11 states and 117 transitions. [2024-06-28 00:01:00,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 241 transitions, 2615 flow [2024-06-28 00:01:00,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 241 transitions, 2555 flow, removed 9 selfloop flow, removed 16 redundant places. [2024-06-28 00:01:00,849 INFO L231 Difference]: Finished difference. Result has 325 places, 161 transitions, 1436 flow [2024-06-28 00:01:00,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2031, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1436, PETRI_PLACES=325, PETRI_TRANSITIONS=161} [2024-06-28 00:01:00,849 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 295 predicate places. [2024-06-28 00:01:00,849 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 161 transitions, 1436 flow [2024-06-28 00:01:00,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:00,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:00,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:00,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable239 [2024-06-28 00:01:00,849 INFO L420 AbstractCegarLoop]: === Iteration 241 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:00,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:00,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1964974444, now seen corresponding path program 15 times [2024-06-28 00:01:00,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:00,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615765851] [2024-06-28 00:01:00,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:00,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:00,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:02,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:02,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:02,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615765851] [2024-06-28 00:01:02,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615765851] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:02,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:02,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:01:02,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118045642] [2024-06-28 00:01:02,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:02,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:01:02,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:02,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:01:02,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:01:02,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:01:02,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 161 transitions, 1436 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:02,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:02,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:01:02,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:03,267 INFO L124 PetriNetUnfolderBase]: 402/799 cut-off events. [2024-06-28 00:01:03,267 INFO L125 PetriNetUnfolderBase]: For 152888/152888 co-relation queries the response was YES. [2024-06-28 00:01:03,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6068 conditions, 799 events. 402/799 cut-off events. For 152888/152888 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 4195 event pairs, 82 based on Foata normal form. 6/805 useless extension candidates. Maximal degree in co-relation 5958. Up to 740 conditions per place. [2024-06-28 00:01:03,275 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 151 selfloop transitions, 12 changer transitions 8/173 dead transitions. [2024-06-28 00:01:03,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 173 transitions, 1818 flow [2024-06-28 00:01:03,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:01:03,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:01:03,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 99 transitions. [2024-06-28 00:01:03,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2903225806451613 [2024-06-28 00:01:03,276 INFO L175 Difference]: Start difference. First operand has 325 places, 161 transitions, 1436 flow. Second operand 11 states and 99 transitions. [2024-06-28 00:01:03,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 173 transitions, 1818 flow [2024-06-28 00:01:03,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 173 transitions, 1754 flow, removed 25 selfloop flow, removed 30 redundant places. [2024-06-28 00:01:03,575 INFO L231 Difference]: Finished difference. Result has 241 places, 159 transitions, 1387 flow [2024-06-28 00:01:03,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1372, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1387, PETRI_PLACES=241, PETRI_TRANSITIONS=159} [2024-06-28 00:01:03,575 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 211 predicate places. [2024-06-28 00:01:03,576 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 159 transitions, 1387 flow [2024-06-28 00:01:03,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:03,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:03,576 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:03,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240 [2024-06-28 00:01:03,576 INFO L420 AbstractCegarLoop]: === Iteration 242 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:03,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:03,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1859133134, now seen corresponding path program 16 times [2024-06-28 00:01:03,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:03,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088341081] [2024-06-28 00:01:03,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:03,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:03,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:05,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:05,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:05,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088341081] [2024-06-28 00:01:05,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088341081] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:05,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:05,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:01:05,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630941669] [2024-06-28 00:01:05,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:05,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:01:05,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:05,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:01:05,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:01:05,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:01:05,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 159 transitions, 1387 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:05,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:05,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:01:05,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:05,985 INFO L124 PetriNetUnfolderBase]: 393/784 cut-off events. [2024-06-28 00:01:05,986 INFO L125 PetriNetUnfolderBase]: For 88184/88184 co-relation queries the response was YES. [2024-06-28 00:01:05,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5105 conditions, 784 events. 393/784 cut-off events. For 88184/88184 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 4105 event pairs, 87 based on Foata normal form. 8/792 useless extension candidates. Maximal degree in co-relation 5019. Up to 720 conditions per place. [2024-06-28 00:01:05,991 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 145 selfloop transitions, 9 changer transitions 15/171 dead transitions. [2024-06-28 00:01:05,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 171 transitions, 1785 flow [2024-06-28 00:01:05,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:01:05,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:01:05,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 99 transitions. [2024-06-28 00:01:05,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2903225806451613 [2024-06-28 00:01:05,992 INFO L175 Difference]: Start difference. First operand has 241 places, 159 transitions, 1387 flow. Second operand 11 states and 99 transitions. [2024-06-28 00:01:05,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 171 transitions, 1785 flow [2024-06-28 00:01:06,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 171 transitions, 1757 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 00:01:06,174 INFO L231 Difference]: Finished difference. Result has 239 places, 152 transitions, 1342 flow [2024-06-28 00:01:06,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1359, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1342, PETRI_PLACES=239, PETRI_TRANSITIONS=152} [2024-06-28 00:01:06,174 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 209 predicate places. [2024-06-28 00:01:06,174 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 152 transitions, 1342 flow [2024-06-28 00:01:06,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:06,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:06,174 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:06,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241 [2024-06-28 00:01:06,174 INFO L420 AbstractCegarLoop]: === Iteration 243 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:06,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:06,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1691574070, now seen corresponding path program 17 times [2024-06-28 00:01:06,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:06,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735464198] [2024-06-28 00:01:06,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:06,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:06,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:07,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:07,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:07,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735464198] [2024-06-28 00:01:07,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735464198] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:07,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:07,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 00:01:07,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453589445] [2024-06-28 00:01:07,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:07,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 00:01:07,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:07,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 00:01:07,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-28 00:01:08,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:01:08,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 152 transitions, 1342 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:08,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:08,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:01:08,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:08,371 INFO L124 PetriNetUnfolderBase]: 380/757 cut-off events. [2024-06-28 00:01:08,371 INFO L125 PetriNetUnfolderBase]: For 80735/80735 co-relation queries the response was YES. [2024-06-28 00:01:08,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4948 conditions, 757 events. 380/757 cut-off events. For 80735/80735 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3910 event pairs, 83 based on Foata normal form. 6/763 useless extension candidates. Maximal degree in co-relation 4863. Up to 552 conditions per place. [2024-06-28 00:01:08,377 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 104 selfloop transitions, 42 changer transitions 16/164 dead transitions. [2024-06-28 00:01:08,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 164 transitions, 1706 flow [2024-06-28 00:01:08,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:01:08,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:01:08,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-28 00:01:08,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36070381231671556 [2024-06-28 00:01:08,377 INFO L175 Difference]: Start difference. First operand has 239 places, 152 transitions, 1342 flow. Second operand 11 states and 123 transitions. [2024-06-28 00:01:08,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 164 transitions, 1706 flow [2024-06-28 00:01:08,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 164 transitions, 1672 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-28 00:01:08,542 INFO L231 Difference]: Finished difference. Result has 230 places, 142 transitions, 1315 flow [2024-06-28 00:01:08,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1310, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1315, PETRI_PLACES=230, PETRI_TRANSITIONS=142} [2024-06-28 00:01:08,542 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 200 predicate places. [2024-06-28 00:01:08,542 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 142 transitions, 1315 flow [2024-06-28 00:01:08,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:08,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:08,542 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:08,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242 [2024-06-28 00:01:08,542 INFO L420 AbstractCegarLoop]: === Iteration 244 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:08,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:08,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1627330306, now seen corresponding path program 2 times [2024-06-28 00:01:08,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:08,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862805635] [2024-06-28 00:01:08,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:08,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:08,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:10,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:10,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:10,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862805635] [2024-06-28 00:01:10,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862805635] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:10,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:10,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 00:01:10,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650781773] [2024-06-28 00:01:10,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:10,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 00:01:10,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:10,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 00:01:10,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2024-06-28 00:01:11,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:01:11,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 142 transitions, 1315 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:11,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:11,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:01:11,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:11,376 INFO L124 PetriNetUnfolderBase]: 376/753 cut-off events. [2024-06-28 00:01:11,376 INFO L125 PetriNetUnfolderBase]: For 87895/87895 co-relation queries the response was YES. [2024-06-28 00:01:11,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4859 conditions, 753 events. 376/753 cut-off events. For 87895/87895 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3899 event pairs, 95 based on Foata normal form. 14/767 useless extension candidates. Maximal degree in co-relation 4778. Up to 563 conditions per place. [2024-06-28 00:01:11,381 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 102 selfloop transitions, 32 changer transitions 21/157 dead transitions. [2024-06-28 00:01:11,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 157 transitions, 1699 flow [2024-06-28 00:01:11,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:01:11,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:01:11,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-28 00:01:11,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 00:01:11,382 INFO L175 Difference]: Start difference. First operand has 230 places, 142 transitions, 1315 flow. Second operand 12 states and 132 transitions. [2024-06-28 00:01:11,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 157 transitions, 1699 flow [2024-06-28 00:01:11,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 157 transitions, 1599 flow, removed 6 selfloop flow, removed 15 redundant places. [2024-06-28 00:01:11,533 INFO L231 Difference]: Finished difference. Result has 220 places, 129 transitions, 1177 flow [2024-06-28 00:01:11,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1215, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1177, PETRI_PLACES=220, PETRI_TRANSITIONS=129} [2024-06-28 00:01:11,533 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 190 predicate places. [2024-06-28 00:01:11,533 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 129 transitions, 1177 flow [2024-06-28 00:01:11,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:11,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:11,533 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:11,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable243 [2024-06-28 00:01:11,534 INFO L420 AbstractCegarLoop]: === Iteration 245 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:11,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:11,534 INFO L85 PathProgramCache]: Analyzing trace with hash -38836944, now seen corresponding path program 3 times [2024-06-28 00:01:11,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:11,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994959859] [2024-06-28 00:01:11,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:11,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:11,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:13,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:13,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:13,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994959859] [2024-06-28 00:01:13,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994959859] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:13,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:13,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 00:01:13,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66128323] [2024-06-28 00:01:13,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:13,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 00:01:13,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:13,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 00:01:13,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 00:01:13,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:01:13,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 129 transitions, 1177 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:13,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:13,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:01:13,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:13,612 INFO L124 PetriNetUnfolderBase]: 315/634 cut-off events. [2024-06-28 00:01:13,612 INFO L125 PetriNetUnfolderBase]: For 52868/52868 co-relation queries the response was YES. [2024-06-28 00:01:13,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3749 conditions, 634 events. 315/634 cut-off events. For 52868/52868 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3129 event pairs, 75 based on Foata normal form. 8/642 useless extension candidates. Maximal degree in co-relation 3672. Up to 441 conditions per place. [2024-06-28 00:01:13,616 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 90 selfloop transitions, 34 changer transitions 16/142 dead transitions. [2024-06-28 00:01:13,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 142 transitions, 1515 flow [2024-06-28 00:01:13,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:01:13,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:01:13,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-28 00:01:13,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36656891495601174 [2024-06-28 00:01:13,617 INFO L175 Difference]: Start difference. First operand has 220 places, 129 transitions, 1177 flow. Second operand 11 states and 125 transitions. [2024-06-28 00:01:13,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 142 transitions, 1515 flow [2024-06-28 00:01:13,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 142 transitions, 1390 flow, removed 6 selfloop flow, removed 18 redundant places. [2024-06-28 00:01:13,708 INFO L231 Difference]: Finished difference. Result has 207 places, 121 transitions, 1072 flow [2024-06-28 00:01:13,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1052, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1072, PETRI_PLACES=207, PETRI_TRANSITIONS=121} [2024-06-28 00:01:13,709 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 177 predicate places. [2024-06-28 00:01:13,709 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 121 transitions, 1072 flow [2024-06-28 00:01:13,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:13,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:13,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:13,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable244 [2024-06-28 00:01:13,709 INFO L420 AbstractCegarLoop]: === Iteration 246 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:13,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:13,709 INFO L85 PathProgramCache]: Analyzing trace with hash -275200412, now seen corresponding path program 18 times [2024-06-28 00:01:13,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:13,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090389912] [2024-06-28 00:01:13,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:13,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:13,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:15,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:15,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:15,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090389912] [2024-06-28 00:01:15,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090389912] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:15,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:15,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 00:01:15,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410718727] [2024-06-28 00:01:15,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:15,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 00:01:15,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:15,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 00:01:15,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 00:01:15,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:01:15,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 121 transitions, 1072 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:15,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:15,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:01:15,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:16,254 INFO L124 PetriNetUnfolderBase]: 297/600 cut-off events. [2024-06-28 00:01:16,254 INFO L125 PetriNetUnfolderBase]: For 44574/44574 co-relation queries the response was YES. [2024-06-28 00:01:16,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3507 conditions, 600 events. 297/600 cut-off events. For 44574/44574 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2899 event pairs, 67 based on Foata normal form. 6/606 useless extension candidates. Maximal degree in co-relation 3435. Up to 423 conditions per place. [2024-06-28 00:01:16,258 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 84 selfloop transitions, 32 changer transitions 16/134 dead transitions. [2024-06-28 00:01:16,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 134 transitions, 1376 flow [2024-06-28 00:01:16,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:01:16,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:01:16,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-28 00:01:16,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3519061583577713 [2024-06-28 00:01:16,259 INFO L175 Difference]: Start difference. First operand has 207 places, 121 transitions, 1072 flow. Second operand 11 states and 120 transitions. [2024-06-28 00:01:16,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 134 transitions, 1376 flow [2024-06-28 00:01:16,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 134 transitions, 1286 flow, removed 11 selfloop flow, removed 11 redundant places. [2024-06-28 00:01:16,340 INFO L231 Difference]: Finished difference. Result has 196 places, 114 transitions, 989 flow [2024-06-28 00:01:16,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=986, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=989, PETRI_PLACES=196, PETRI_TRANSITIONS=114} [2024-06-28 00:01:16,340 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 166 predicate places. [2024-06-28 00:01:16,340 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 114 transitions, 989 flow [2024-06-28 00:01:16,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:16,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:16,341 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:16,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable245 [2024-06-28 00:01:16,341 INFO L420 AbstractCegarLoop]: === Iteration 247 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:16,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:16,341 INFO L85 PathProgramCache]: Analyzing trace with hash -707000108, now seen corresponding path program 19 times [2024-06-28 00:01:16,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:16,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904646737] [2024-06-28 00:01:16,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:16,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:16,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:18,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:18,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:18,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904646737] [2024-06-28 00:01:18,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904646737] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:18,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:18,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 00:01:18,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421377106] [2024-06-28 00:01:18,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:18,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 00:01:18,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:18,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 00:01:18,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2024-06-28 00:01:18,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:01:18,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 114 transitions, 989 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:18,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:18,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:01:18,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:18,530 INFO L124 PetriNetUnfolderBase]: 283/570 cut-off events. [2024-06-28 00:01:18,530 INFO L125 PetriNetUnfolderBase]: For 39006/39006 co-relation queries the response was YES. [2024-06-28 00:01:18,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3230 conditions, 570 events. 283/570 cut-off events. For 39006/39006 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2706 event pairs, 67 based on Foata normal form. 6/576 useless extension candidates. Maximal degree in co-relation 3162. Up to 413 conditions per place. [2024-06-28 00:01:18,534 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 84 selfloop transitions, 30 changer transitions 11/127 dead transitions. [2024-06-28 00:01:18,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 127 transitions, 1275 flow [2024-06-28 00:01:18,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:01:18,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:01:18,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-28 00:01:18,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 00:01:18,534 INFO L175 Difference]: Start difference. First operand has 196 places, 114 transitions, 989 flow. Second operand 12 states and 132 transitions. [2024-06-28 00:01:18,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 127 transitions, 1275 flow [2024-06-28 00:01:18,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 127 transitions, 1167 flow, removed 6 selfloop flow, removed 15 redundant places. [2024-06-28 00:01:18,601 INFO L231 Difference]: Finished difference. Result has 183 places, 110 transitions, 924 flow [2024-06-28 00:01:18,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=881, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=924, PETRI_PLACES=183, PETRI_TRANSITIONS=110} [2024-06-28 00:01:18,601 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 153 predicate places. [2024-06-28 00:01:18,601 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 110 transitions, 924 flow [2024-06-28 00:01:18,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:18,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:18,601 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:18,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable246 [2024-06-28 00:01:18,602 INFO L420 AbstractCegarLoop]: === Iteration 248 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:18,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:18,602 INFO L85 PathProgramCache]: Analyzing trace with hash -698710770, now seen corresponding path program 4 times [2024-06-28 00:01:18,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:18,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459580934] [2024-06-28 00:01:18,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:18,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:18,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:20,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:20,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:20,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459580934] [2024-06-28 00:01:20,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459580934] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:20,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:20,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 00:01:20,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259901611] [2024-06-28 00:01:20,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:20,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 00:01:20,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:20,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 00:01:20,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 00:01:20,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:01:20,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 110 transitions, 924 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:20,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:20,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:01:20,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:20,642 INFO L124 PetriNetUnfolderBase]: 257/516 cut-off events. [2024-06-28 00:01:20,642 INFO L125 PetriNetUnfolderBase]: For 25290/25290 co-relation queries the response was YES. [2024-06-28 00:01:20,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2541 conditions, 516 events. 257/516 cut-off events. For 25290/25290 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2365 event pairs, 59 based on Foata normal form. 8/524 useless extension candidates. Maximal degree in co-relation 2478. Up to 344 conditions per place. [2024-06-28 00:01:20,645 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 79 selfloop transitions, 27 changer transitions 15/123 dead transitions. [2024-06-28 00:01:20,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 123 transitions, 1216 flow [2024-06-28 00:01:20,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:01:20,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:01:20,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-28 00:01:20,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3724340175953079 [2024-06-28 00:01:20,646 INFO L175 Difference]: Start difference. First operand has 183 places, 110 transitions, 924 flow. Second operand 11 states and 127 transitions. [2024-06-28 00:01:20,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 123 transitions, 1216 flow [2024-06-28 00:01:20,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 123 transitions, 1150 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 00:01:20,692 INFO L231 Difference]: Finished difference. Result has 177 places, 102 transitions, 867 flow [2024-06-28 00:01:20,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=858, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=867, PETRI_PLACES=177, PETRI_TRANSITIONS=102} [2024-06-28 00:01:20,693 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 147 predicate places. [2024-06-28 00:01:20,693 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 102 transitions, 867 flow [2024-06-28 00:01:20,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:20,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:20,693 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:20,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable247 [2024-06-28 00:01:20,693 INFO L420 AbstractCegarLoop]: === Iteration 249 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:20,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:20,693 INFO L85 PathProgramCache]: Analyzing trace with hash -935074238, now seen corresponding path program 20 times [2024-06-28 00:01:20,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:20,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241967951] [2024-06-28 00:01:20,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:20,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:20,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:22,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:22,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:22,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241967951] [2024-06-28 00:01:22,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241967951] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:22,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:22,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 00:01:22,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461066283] [2024-06-28 00:01:22,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:22,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 00:01:22,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:22,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 00:01:22,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 00:01:22,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:01:22,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 102 transitions, 867 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:22,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:22,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:01:22,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:23,336 INFO L124 PetriNetUnfolderBase]: 239/482 cut-off events. [2024-06-28 00:01:23,336 INFO L125 PetriNetUnfolderBase]: For 21066/21066 co-relation queries the response was YES. [2024-06-28 00:01:23,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2374 conditions, 482 events. 239/482 cut-off events. For 21066/21066 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2152 event pairs, 49 based on Foata normal form. 6/488 useless extension candidates. Maximal degree in co-relation 2313. Up to 302 conditions per place. [2024-06-28 00:01:23,338 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 74 selfloop transitions, 24 changer transitions 15/115 dead transitions. [2024-06-28 00:01:23,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 115 transitions, 1129 flow [2024-06-28 00:01:23,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:01:23,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:01:23,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-28 00:01:23,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35777126099706746 [2024-06-28 00:01:23,339 INFO L175 Difference]: Start difference. First operand has 177 places, 102 transitions, 867 flow. Second operand 11 states and 122 transitions. [2024-06-28 00:01:23,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 115 transitions, 1129 flow [2024-06-28 00:01:23,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 115 transitions, 1053 flow, removed 11 selfloop flow, removed 12 redundant places. [2024-06-28 00:01:23,379 INFO L231 Difference]: Finished difference. Result has 166 places, 93 transitions, 775 flow [2024-06-28 00:01:23,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=795, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=775, PETRI_PLACES=166, PETRI_TRANSITIONS=93} [2024-06-28 00:01:23,379 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 136 predicate places. [2024-06-28 00:01:23,379 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 93 transitions, 775 flow [2024-06-28 00:01:23,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:23,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:23,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:23,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable248 [2024-06-28 00:01:23,379 INFO L420 AbstractCegarLoop]: === Iteration 250 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:23,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:23,380 INFO L85 PathProgramCache]: Analyzing trace with hash 556954726, now seen corresponding path program 21 times [2024-06-28 00:01:23,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:23,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004274026] [2024-06-28 00:01:23,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:23,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:23,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:25,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:25,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:25,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004274026] [2024-06-28 00:01:25,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004274026] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:25,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:25,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 00:01:25,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614029130] [2024-06-28 00:01:25,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:25,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 00:01:25,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:25,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 00:01:25,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 00:01:25,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:01:25,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 93 transitions, 775 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:25,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:25,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:01:25,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:25,427 INFO L124 PetriNetUnfolderBase]: 216/437 cut-off events. [2024-06-28 00:01:25,427 INFO L125 PetriNetUnfolderBase]: For 17954/17954 co-relation queries the response was YES. [2024-06-28 00:01:25,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2119 conditions, 437 events. 216/437 cut-off events. For 17954/17954 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1886 event pairs, 43 based on Foata normal form. 6/443 useless extension candidates. Maximal degree in co-relation 2062. Up to 276 conditions per place. [2024-06-28 00:01:25,429 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 72 selfloop transitions, 21 changer transitions 12/107 dead transitions. [2024-06-28 00:01:25,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 107 transitions, 1019 flow [2024-06-28 00:01:25,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:01:25,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:01:25,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-28 00:01:25,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 00:01:25,430 INFO L175 Difference]: Start difference. First operand has 166 places, 93 transitions, 775 flow. Second operand 11 states and 121 transitions. [2024-06-28 00:01:25,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 107 transitions, 1019 flow [2024-06-28 00:01:25,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 107 transitions, 944 flow, removed 7 selfloop flow, removed 18 redundant places. [2024-06-28 00:01:25,457 INFO L231 Difference]: Finished difference. Result has 150 places, 89 transitions, 717 flow [2024-06-28 00:01:25,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=700, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=717, PETRI_PLACES=150, PETRI_TRANSITIONS=89} [2024-06-28 00:01:25,457 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 120 predicate places. [2024-06-28 00:01:25,457 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 89 transitions, 717 flow [2024-06-28 00:01:25,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:25,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:25,457 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:25,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable249 [2024-06-28 00:01:25,457 INFO L420 AbstractCegarLoop]: === Iteration 251 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:25,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:25,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1667503234, now seen corresponding path program 22 times [2024-06-28 00:01:25,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:25,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382423650] [2024-06-28 00:01:25,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:25,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:25,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:27,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:27,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:27,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382423650] [2024-06-28 00:01:27,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382423650] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:27,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:27,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:01:27,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825439986] [2024-06-28 00:01:27,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:27,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:01:27,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:27,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:01:27,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:01:27,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:01:27,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 89 transitions, 717 flow. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:27,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:27,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:01:27,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:27,405 INFO L124 PetriNetUnfolderBase]: 202/411 cut-off events. [2024-06-28 00:01:27,405 INFO L125 PetriNetUnfolderBase]: For 13180/13180 co-relation queries the response was YES. [2024-06-28 00:01:27,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1941 conditions, 411 events. 202/411 cut-off events. For 13180/13180 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1720 event pairs, 45 based on Foata normal form. 6/417 useless extension candidates. Maximal degree in co-relation 1890. Up to 272 conditions per place. [2024-06-28 00:01:27,407 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 62 selfloop transitions, 16 changer transitions 21/101 dead transitions. [2024-06-28 00:01:27,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 101 transitions, 945 flow [2024-06-28 00:01:27,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:01:27,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:01:27,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-28 00:01:27,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36129032258064514 [2024-06-28 00:01:27,408 INFO L175 Difference]: Start difference. First operand has 150 places, 89 transitions, 717 flow. Second operand 10 states and 112 transitions. [2024-06-28 00:01:27,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 101 transitions, 945 flow [2024-06-28 00:01:27,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 101 transitions, 897 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 00:01:27,428 INFO L231 Difference]: Finished difference. Result has 144 places, 77 transitions, 608 flow [2024-06-28 00:01:27,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=669, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=608, PETRI_PLACES=144, PETRI_TRANSITIONS=77} [2024-06-28 00:01:27,429 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 114 predicate places. [2024-06-28 00:01:27,429 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 77 transitions, 608 flow [2024-06-28 00:01:27,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:27,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:27,429 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:27,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable250 [2024-06-28 00:01:27,429 INFO L420 AbstractCegarLoop]: === Iteration 252 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:27,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:27,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1310721742, now seen corresponding path program 23 times [2024-06-28 00:01:27,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:27,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966954526] [2024-06-28 00:01:27,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:27,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:27,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:29,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:29,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:29,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966954526] [2024-06-28 00:01:29,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966954526] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:29,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:29,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 00:01:29,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158991136] [2024-06-28 00:01:29,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:29,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 00:01:29,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:29,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 00:01:29,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 00:01:29,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:01:29,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 77 transitions, 608 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:29,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:29,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:01:29,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:29,413 INFO L124 PetriNetUnfolderBase]: 184/373 cut-off events. [2024-06-28 00:01:29,413 INFO L125 PetriNetUnfolderBase]: For 11740/11740 co-relation queries the response was YES. [2024-06-28 00:01:29,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1754 conditions, 373 events. 184/373 cut-off events. For 11740/11740 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1513 event pairs, 32 based on Foata normal form. 6/379 useless extension candidates. Maximal degree in co-relation 1705. Up to 140 conditions per place. [2024-06-28 00:01:29,416 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 54 selfloop transitions, 21 changer transitions 15/92 dead transitions. [2024-06-28 00:01:29,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 92 transitions, 824 flow [2024-06-28 00:01:29,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:01:29,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:01:29,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 112 transitions. [2024-06-28 00:01:29,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3284457478005865 [2024-06-28 00:01:29,416 INFO L175 Difference]: Start difference. First operand has 144 places, 77 transitions, 608 flow. Second operand 11 states and 112 transitions. [2024-06-28 00:01:29,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 92 transitions, 824 flow [2024-06-28 00:01:29,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 92 transitions, 772 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-28 00:01:29,433 INFO L231 Difference]: Finished difference. Result has 130 places, 72 transitions, 572 flow [2024-06-28 00:01:29,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=572, PETRI_PLACES=130, PETRI_TRANSITIONS=72} [2024-06-28 00:01:29,433 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 100 predicate places. [2024-06-28 00:01:29,433 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 72 transitions, 572 flow [2024-06-28 00:01:29,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:29,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:29,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:29,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable251 [2024-06-28 00:01:29,434 INFO L420 AbstractCegarLoop]: === Iteration 253 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:29,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:29,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1760599072, now seen corresponding path program 5 times [2024-06-28 00:01:29,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:29,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232079707] [2024-06-28 00:01:29,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:29,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:29,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:31,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:31,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:31,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232079707] [2024-06-28 00:01:31,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232079707] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:31,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:31,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 00:01:31,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962302039] [2024-06-28 00:01:31,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:31,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 00:01:31,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:31,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 00:01:31,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 00:01:31,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:01:31,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 72 transitions, 572 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:31,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:31,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:01:31,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:31,443 INFO L124 PetriNetUnfolderBase]: 170/347 cut-off events. [2024-06-28 00:01:31,443 INFO L125 PetriNetUnfolderBase]: For 10712/10712 co-relation queries the response was YES. [2024-06-28 00:01:31,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1670 conditions, 347 events. 170/347 cut-off events. For 10712/10712 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1385 event pairs, 45 based on Foata normal form. 8/355 useless extension candidates. Maximal degree in co-relation 1624. Up to 210 conditions per place. [2024-06-28 00:01:31,445 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 43 selfloop transitions, 26 changer transitions 14/85 dead transitions. [2024-06-28 00:01:31,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 85 transitions, 780 flow [2024-06-28 00:01:31,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:01:31,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:01:31,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-28 00:01:31,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3460410557184751 [2024-06-28 00:01:31,446 INFO L175 Difference]: Start difference. First operand has 130 places, 72 transitions, 572 flow. Second operand 11 states and 118 transitions. [2024-06-28 00:01:31,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 85 transitions, 780 flow [2024-06-28 00:01:31,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 85 transitions, 708 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-28 00:01:31,460 INFO L231 Difference]: Finished difference. Result has 122 places, 64 transitions, 502 flow [2024-06-28 00:01:31,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=500, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=502, PETRI_PLACES=122, PETRI_TRANSITIONS=64} [2024-06-28 00:01:31,460 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 92 predicate places. [2024-06-28 00:01:31,460 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 64 transitions, 502 flow [2024-06-28 00:01:31,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:31,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:31,460 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:31,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable252 [2024-06-28 00:01:31,460 INFO L420 AbstractCegarLoop]: === Iteration 254 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:31,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:31,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1376495328, now seen corresponding path program 24 times [2024-06-28 00:01:31,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:31,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707792189] [2024-06-28 00:01:31,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:31,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:31,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:32,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:32,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:32,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707792189] [2024-06-28 00:01:32,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707792189] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:32,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:32,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:01:32,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008506353] [2024-06-28 00:01:32,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:32,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:01:32,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:32,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:01:32,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:01:33,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 00:01:33,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 64 transitions, 502 flow. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:33,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:33,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 00:01:33,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:33,227 INFO L124 PetriNetUnfolderBase]: 134/275 cut-off events. [2024-06-28 00:01:33,227 INFO L125 PetriNetUnfolderBase]: For 6028/6028 co-relation queries the response was YES. [2024-06-28 00:01:33,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1148 conditions, 275 events. 134/275 cut-off events. For 6028/6028 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 999 event pairs, 31 based on Foata normal form. 8/283 useless extension candidates. Maximal degree in co-relation 1104. Up to 160 conditions per place. [2024-06-28 00:01:33,229 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 40 selfloop transitions, 22 changer transitions 10/75 dead transitions. [2024-06-28 00:01:33,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 75 transitions, 674 flow [2024-06-28 00:01:33,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:01:33,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:01:33,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-28 00:01:33,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36774193548387096 [2024-06-28 00:01:33,229 INFO L175 Difference]: Start difference. First operand has 122 places, 64 transitions, 502 flow. Second operand 10 states and 114 transitions. [2024-06-28 00:01:33,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 75 transitions, 674 flow [2024-06-28 00:01:33,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 75 transitions, 604 flow, removed 9 selfloop flow, removed 12 redundant places. [2024-06-28 00:01:33,236 INFO L231 Difference]: Finished difference. Result has 112 places, 59 transitions, 442 flow [2024-06-28 00:01:33,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=434, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=442, PETRI_PLACES=112, PETRI_TRANSITIONS=59} [2024-06-28 00:01:33,236 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 82 predicate places. [2024-06-28 00:01:33,236 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 59 transitions, 442 flow [2024-06-28 00:01:33,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:33,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:33,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:33,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable253 [2024-06-28 00:01:33,237 INFO L420 AbstractCegarLoop]: === Iteration 255 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:33,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:33,237 INFO L85 PathProgramCache]: Analyzing trace with hash -285412380, now seen corresponding path program 25 times [2024-06-28 00:01:33,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:33,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027592970] [2024-06-28 00:01:33,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:33,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:33,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:34,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:34,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:34,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027592970] [2024-06-28 00:01:34,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027592970] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:34,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:34,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 00:01:34,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297479740] [2024-06-28 00:01:34,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:34,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 00:01:34,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:34,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 00:01:34,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 00:01:35,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:01:35,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 59 transitions, 442 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:35,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:35,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:01:35,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:35,331 INFO L124 PetriNetUnfolderBase]: 123/258 cut-off events. [2024-06-28 00:01:35,331 INFO L125 PetriNetUnfolderBase]: For 4260/4260 co-relation queries the response was YES. [2024-06-28 00:01:35,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1028 conditions, 258 events. 123/258 cut-off events. For 4260/4260 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 932 event pairs, 10 based on Foata normal form. 6/264 useless extension candidates. Maximal degree in co-relation 987. Up to 66 conditions per place. [2024-06-28 00:01:35,333 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 38 selfloop transitions, 17 changer transitions 16/73 dead transitions. [2024-06-28 00:01:35,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 73 transitions, 616 flow [2024-06-28 00:01:35,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:01:35,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:01:35,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 107 transitions. [2024-06-28 00:01:35,336 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31378299120234604 [2024-06-28 00:01:35,336 INFO L175 Difference]: Start difference. First operand has 112 places, 59 transitions, 442 flow. Second operand 11 states and 107 transitions. [2024-06-28 00:01:35,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 73 transitions, 616 flow [2024-06-28 00:01:35,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 73 transitions, 541 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-28 00:01:35,341 INFO L231 Difference]: Finished difference. Result has 107 places, 51 transitions, 362 flow [2024-06-28 00:01:35,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=369, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=362, PETRI_PLACES=107, PETRI_TRANSITIONS=51} [2024-06-28 00:01:35,341 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 77 predicate places. [2024-06-28 00:01:35,342 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 51 transitions, 362 flow [2024-06-28 00:01:35,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:35,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:35,342 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:35,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable254 [2024-06-28 00:01:35,342 INFO L420 AbstractCegarLoop]: === Iteration 256 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:35,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:35,342 INFO L85 PathProgramCache]: Analyzing trace with hash -280943730, now seen corresponding path program 26 times [2024-06-28 00:01:35,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:35,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743267461] [2024-06-28 00:01:35,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:35,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:35,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:37,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:37,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:37,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743267461] [2024-06-28 00:01:37,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743267461] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:37,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:37,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 00:01:37,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361718025] [2024-06-28 00:01:37,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:37,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 00:01:37,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:37,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 00:01:37,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 00:01:37,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:01:37,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 51 transitions, 362 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:37,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:37,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:01:37,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:37,469 INFO L124 PetriNetUnfolderBase]: 95/206 cut-off events. [2024-06-28 00:01:37,470 INFO L125 PetriNetUnfolderBase]: For 3856/3856 co-relation queries the response was YES. [2024-06-28 00:01:37,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 838 conditions, 206 events. 95/206 cut-off events. For 3856/3856 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 666 event pairs, 4 based on Foata normal form. 6/212 useless extension candidates. Maximal degree in co-relation 800. Up to 49 conditions per place. [2024-06-28 00:01:37,471 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 28 selfloop transitions, 14 changer transitions 20/64 dead transitions. [2024-06-28 00:01:37,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 64 transitions, 514 flow [2024-06-28 00:01:37,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:01:37,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:01:37,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 106 transitions. [2024-06-28 00:01:37,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31085043988269795 [2024-06-28 00:01:37,472 INFO L175 Difference]: Start difference. First operand has 107 places, 51 transitions, 362 flow. Second operand 11 states and 106 transitions. [2024-06-28 00:01:37,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 64 transitions, 514 flow [2024-06-28 00:01:37,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 64 transitions, 462 flow, removed 6 selfloop flow, removed 15 redundant places. [2024-06-28 00:01:37,476 INFO L231 Difference]: Finished difference. Result has 95 places, 37 transitions, 255 flow [2024-06-28 00:01:37,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=255, PETRI_PLACES=95, PETRI_TRANSITIONS=37} [2024-06-28 00:01:37,476 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 65 predicate places. [2024-06-28 00:01:37,477 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 37 transitions, 255 flow [2024-06-28 00:01:37,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:37,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:37,477 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:37,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable255 [2024-06-28 00:01:37,480 INFO L420 AbstractCegarLoop]: === Iteration 257 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:37,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:37,480 INFO L85 PathProgramCache]: Analyzing trace with hash -108280860, now seen corresponding path program 27 times [2024-06-28 00:01:37,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:37,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243294585] [2024-06-28 00:01:37,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:37,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:37,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:39,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:39,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:39,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243294585] [2024-06-28 00:01:39,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243294585] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:39,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:39,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 00:01:39,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328267591] [2024-06-28 00:01:39,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:39,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 00:01:39,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:39,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 00:01:39,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 00:01:39,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:01:39,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 37 transitions, 255 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:39,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:39,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:01:39,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:39,530 INFO L124 PetriNetUnfolderBase]: 44/105 cut-off events. [2024-06-28 00:01:39,530 INFO L125 PetriNetUnfolderBase]: For 1264/1264 co-relation queries the response was YES. [2024-06-28 00:01:39,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 389 conditions, 105 events. 44/105 cut-off events. For 1264/1264 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 237 event pairs, 0 based on Foata normal form. 6/111 useless extension candidates. Maximal degree in co-relation 356. Up to 28 conditions per place. [2024-06-28 00:01:39,531 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 0 selfloop transitions, 0 changer transitions 44/44 dead transitions. [2024-06-28 00:01:39,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 44 transitions, 313 flow [2024-06-28 00:01:39,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:01:39,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:01:39,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 98 transitions. [2024-06-28 00:01:39,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2873900293255132 [2024-06-28 00:01:39,532 INFO L175 Difference]: Start difference. First operand has 95 places, 37 transitions, 255 flow. Second operand 11 states and 98 transitions. [2024-06-28 00:01:39,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 44 transitions, 313 flow [2024-06-28 00:01:39,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 44 transitions, 234 flow, removed 1 selfloop flow, removed 25 redundant places. [2024-06-28 00:01:39,533 INFO L231 Difference]: Finished difference. Result has 69 places, 0 transitions, 0 flow [2024-06-28 00:01:39,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=69, PETRI_TRANSITIONS=0} [2024-06-28 00:01:39,533 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 39 predicate places. [2024-06-28 00:01:39,533 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 0 transitions, 0 flow [2024-06-28 00:01:39,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:39,535 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-28 00:01:39,536 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-28 00:01:39,536 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-28 00:01:39,536 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-28 00:01:39,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable256 [2024-06-28 00:01:39,537 INFO L445 BasicCegarLoop]: Path program histogram: [41, 38, 27, 17, 15, 15, 13, 13, 13, 9, 7, 6, 6, 6, 5, 5, 5, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:39,539 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-28 00:01:39,539 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-28 00:01:39,542 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-28 00:01:39,542 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-28 00:01:39,543 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.06 12:01:39 BasicIcfg [2024-06-28 00:01:39,543 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-28 00:01:39,543 INFO L158 Benchmark]: Toolchain (without parser) took 693272.53ms. Allocated memory was 184.5MB in the beginning and 2.0GB in the end (delta: 1.8GB). Free memory was 111.7MB in the beginning and 1.6GB in the end (delta: -1.5GB). Peak memory consumption was 368.1MB. Max. memory is 16.1GB. [2024-06-28 00:01:39,543 INFO L158 Benchmark]: Witness Parser took 0.15ms. Allocated memory is still 113.2MB. Free memory was 75.2MB in the beginning and 75.1MB in the end (delta: 75.0kB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 00:01:39,543 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 184.5MB. Free memory is still 158.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 00:01:39,544 INFO L158 Benchmark]: CACSL2BoogieTranslator took 576.03ms. Allocated memory is still 184.5MB. Free memory was 111.4MB in the beginning and 147.5MB in the end (delta: -36.1MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2024-06-28 00:01:39,544 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.31ms. Allocated memory is still 184.5MB. Free memory was 147.5MB in the beginning and 144.0MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-28 00:01:39,544 INFO L158 Benchmark]: Boogie Preprocessor took 36.15ms. Allocated memory is still 184.5MB. Free memory was 144.0MB in the beginning and 140.5MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-28 00:01:39,544 INFO L158 Benchmark]: RCFGBuilder took 619.87ms. Allocated memory is still 184.5MB. Free memory was 140.5MB in the beginning and 79.0MB in the end (delta: 61.5MB). Peak memory consumption was 60.8MB. Max. memory is 16.1GB. [2024-06-28 00:01:39,544 INFO L158 Benchmark]: TraceAbstraction took 691980.77ms. Allocated memory was 184.5MB in the beginning and 2.0GB in the end (delta: 1.8GB). Free memory was 78.3MB in the beginning and 1.6GB in the end (delta: -1.5GB). Peak memory consumption was 335.2MB. Max. memory is 16.1GB. [2024-06-28 00:01:39,545 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.15ms. Allocated memory is still 113.2MB. Free memory was 75.2MB in the beginning and 75.1MB in the end (delta: 75.0kB). There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.15ms. Allocated memory is still 184.5MB. Free memory is still 158.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 576.03ms. Allocated memory is still 184.5MB. Free memory was 111.4MB in the beginning and 147.5MB in the end (delta: -36.1MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.31ms. Allocated memory is still 184.5MB. Free memory was 147.5MB in the beginning and 144.0MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.15ms. Allocated memory is still 184.5MB. Free memory was 144.0MB in the beginning and 140.5MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 619.87ms. Allocated memory is still 184.5MB. Free memory was 140.5MB in the beginning and 79.0MB in the end (delta: 61.5MB). Peak memory consumption was 60.8MB. Max. memory is 16.1GB. * TraceAbstraction took 691980.77ms. Allocated memory was 184.5MB in the beginning and 2.0GB in the end (delta: 1.8GB). Free memory was 78.3MB in the beginning and 1.6GB in the end (delta: -1.5GB). Peak memory consumption was 335.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 805]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 806]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 50 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 691.9s, OverallIterations: 257, TraceHistogramMax: 1, PathProgramHistogramMax: 41, EmptinessCheckTime: 0.0s, AutomataDifference: 361.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 13968 SdHoareTripleChecker+Valid, 62.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11579 mSDsluCounter, 10611 SdHoareTripleChecker+Invalid, 54.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9195 mSDsCounter, 3610 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 89686 IncrementalHoareTripleChecker+Invalid, 93296 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3610 mSolverCounterUnsat, 1416 mSDtfsCounter, 89686 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2604 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 2578 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4547 ImplicationChecksByTransitivity, 82.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6249occurred in iteration=157, InterpolantAutomatonStates: 2484, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 2.3s SatisfiabilityAnalysisTime, 326.2s InterpolantComputationTime, 4244 NumberOfCodeBlocks, 4244 NumberOfCodeBlocksAsserted, 257 NumberOfCheckSat, 3987 ConstructedInterpolants, 0 QuantifiedInterpolants, 216489 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 257 InterpolantComputations, 257 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-28 00:01:39,731 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE