./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 eb4cb34f 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-eb4cb34-m [2024-06-21 19:02:20,175 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-21 19:02:20,219 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-21 19:02:20,222 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-21 19:02:20,222 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-21 19:02:20,235 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-21 19:02:20,236 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-21 19:02:20,236 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-21 19:02:20,237 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-21 19:02:20,240 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-21 19:02:20,240 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-21 19:02:20,241 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-21 19:02:20,241 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-21 19:02:20,242 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-21 19:02:20,243 INFO L153 SettingsManager]: * Use SBE=true [2024-06-21 19:02:20,243 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-21 19:02:20,243 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-21 19:02:20,243 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-21 19:02:20,243 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-21 19:02:20,244 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-21 19:02:20,244 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-21 19:02:20,244 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-21 19:02:20,244 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-21 19:02:20,245 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-21 19:02:20,245 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-21 19:02:20,245 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-21 19:02:20,245 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-21 19:02:20,245 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-21 19:02:20,246 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-21 19:02:20,246 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-21 19:02:20,247 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-21 19:02:20,247 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-21 19:02:20,247 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 19:02:20,247 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-21 19:02:20,247 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-21 19:02:20,248 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-21 19:02:20,248 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-21 19:02:20,248 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-21 19:02:20,248 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-21 19:02:20,248 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-21 19:02:20,248 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-21 19:02:20,249 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-21 19:02:20,249 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-21 19:02:20,249 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-21 19:02:20,440 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-21 19:02:20,458 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-21 19:02:20,460 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-21 19:02:20,461 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-21 19:02:20,462 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-21 19:02:20,462 INFO L431 ainManager$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 [2024-06-21 19:02:20,534 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-21 19:02:20,535 INFO L274 PluginConnector]: CDTParser initialized [2024-06-21 19:02:20,536 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix041_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-21 19:02:21,520 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-21 19:02:21,730 INFO L384 CDTParser]: Found 1 translation units. [2024-06-21 19:02:21,730 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix041_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-21 19:02:21,755 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06367af67/54f8af1b585043c5874dba25a3b60a21/FLAG5f3487b46 [2024-06-21 19:02:21,775 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06367af67/54f8af1b585043c5874dba25a3b60a21 [2024-06-21 19:02:21,776 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-21 19:02:21,777 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-21 19:02:21,778 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-21 19:02:21,778 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-21 19:02:21,783 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-21 19:02:21,784 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 07:02:20" (1/2) ... [2024-06-21 19:02:21,785 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52e9ee35 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:02:21, skipping insertion in model container [2024-06-21 19:02:21,785 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 07:02:20" (1/2) ... [2024-06-21 19:02:21,786 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@12a4a5be and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:02:21, skipping insertion in model container [2024-06-21 19:02:21,786 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 07:02:21" (2/2) ... [2024-06-21 19:02:21,788 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52e9ee35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:02:21, skipping insertion in model container [2024-06-21 19:02:21,788 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 07:02:21" (2/2) ... [2024-06-21 19:02:21,789 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-21 19:02:21,809 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-21 19:02:21,812 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) [2024-06-21 19:02:21,812 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) [2024-06-21 19:02:21,812 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-21 19:02:21,812 INFO L106 edCorrectnessWitness]: ghost_update [L803-L803] multithreaded = 1; [2024-06-21 19:02:21,855 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-21 19:02:22,144 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 19:02:22,159 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-21 19:02:22,310 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 19:02:22,343 INFO L206 MainTranslator]: Completed translation [2024-06-21 19:02:22,343 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:02:22 WrapperNode [2024-06-21 19:02:22,343 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-21 19:02:22,344 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-21 19:02:22,344 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-21 19:02:22,345 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-21 19:02:22,349 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:02:22" (1/1) ... [2024-06-21 19:02:22,374 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:02:22" (1/1) ... [2024-06-21 19:02:22,402 INFO L138 Inliner]: procedures = 174, calls = 38, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 139 [2024-06-21 19:02:22,402 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-21 19:02:22,403 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-21 19:02:22,403 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-21 19:02:22,403 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-21 19:02:22,411 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:02:22" (1/1) ... [2024-06-21 19:02:22,412 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:02:22" (1/1) ... [2024-06-21 19:02:22,414 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:02:22" (1/1) ... [2024-06-21 19:02:22,427 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]. [2024-06-21 19:02:22,427 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:02:22" (1/1) ... [2024-06-21 19:02:22,434 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:02:22" (1/1) ... [2024-06-21 19:02:22,442 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:02:22" (1/1) ... [2024-06-21 19:02:22,451 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:02:22" (1/1) ... [2024-06-21 19:02:22,453 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:02:22" (1/1) ... [2024-06-21 19:02:22,461 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:02:22" (1/1) ... [2024-06-21 19:02:22,464 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-21 19:02:22,465 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-21 19:02:22,465 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-21 19:02:22,465 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-21 19:02:22,465 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:02:22" (1/1) ... [2024-06-21 19:02:22,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 19:02:22,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-21 19:02:22,526 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) [2024-06-21 19:02:22,559 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 [2024-06-21 19:02:22,597 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-21 19:02:22,598 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-21 19:02:22,598 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-21 19:02:22,598 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-21 19:02:22,598 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-21 19:02:22,598 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-21 19:02:22,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-21 19:02:22,598 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-21 19:02:22,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-21 19:02:22,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-21 19:02:22,600 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-21 19:02:22,692 INFO L244 CfgBuilder]: Building ICFG [2024-06-21 19:02:22,694 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-21 19:02:23,072 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-21 19:02:23,073 INFO L293 CfgBuilder]: Performing block encoding [2024-06-21 19:02:23,196 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-21 19:02:23,197 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-21 19:02:23,197 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 07:02:23 BoogieIcfgContainer [2024-06-21 19:02:23,197 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-21 19:02:23,198 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-21 19:02:23,198 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-21 19:02:23,201 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-21 19:02:23,201 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 07:02:20" (1/4) ... [2024-06-21 19:02:23,201 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e604a45 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 21.06 07:02:23, skipping insertion in model container [2024-06-21 19:02:23,201 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.06 07:02:21" (2/4) ... [2024-06-21 19:02:23,202 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e604a45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 07:02:23, skipping insertion in model container [2024-06-21 19:02:23,202 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:02:22" (3/4) ... [2024-06-21 19:02:23,202 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e604a45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 07:02:23, skipping insertion in model container [2024-06-21 19:02:23,202 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 07:02:23" (4/4) ... [2024-06-21 19:02:23,203 INFO L112 eAbstractionObserver]: Analyzing ICFG mix041_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-21 19:02:23,215 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-21 19:02:23,215 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-21 19:02:23,215 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-21 19:02:23,248 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-21 19:02:23,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 31 transitions, 70 flow [2024-06-21 19:02:23,294 INFO L124 PetriNetUnfolderBase]: 0/29 cut-off events. [2024-06-21 19:02:23,295 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 19:02:23,297 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. [2024-06-21 19:02:23,297 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 31 transitions, 70 flow [2024-06-21 19:02:23,299 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 23 transitions, 52 flow [2024-06-21 19:02:23,306 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-21 19:02:23,311 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;@5ff86018, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-21 19:02:23,311 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-21 19:02:23,313 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-21 19:02:23,313 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-21 19:02:23,314 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 19:02:23,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:02:23,314 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-21 19:02:23,315 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)] === [2024-06-21 19:02:23,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:02:23,318 INFO L85 PathProgramCache]: Analyzing trace with hash 330507394, now seen corresponding path program 1 times [2024-06-21 19:02:23,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:02:23,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182789499] [2024-06-21 19:02:23,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:02:23,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:02:23,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:02:24,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:02:24,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:02:24,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182789499] [2024-06-21 19:02:24,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182789499] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:02:24,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:02:24,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-21 19:02:24,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515003099] [2024-06-21 19:02:24,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:02:24,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-21 19:02:24,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:02:24,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-21 19:02:24,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-21 19:02:24,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-21 19:02:24,273 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) [2024-06-21 19:02:24,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:02:24,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-21 19:02:24,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:02:24,354 INFO L124 PetriNetUnfolderBase]: 162/316 cut-off events. [2024-06-21 19:02:24,368 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-21 19:02:24,370 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. [2024-06-21 19:02:24,372 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 21 selfloop transitions, 3 changer transitions 0/29 dead transitions. [2024-06-21 19:02:24,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 29 transitions, 115 flow [2024-06-21 19:02:24,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-21 19:02:24,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-21 19:02:24,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 53 transitions. [2024-06-21 19:02:24,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5698924731182796 [2024-06-21 19:02:24,383 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 52 flow. Second operand 3 states and 53 transitions. [2024-06-21 19:02:24,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 29 transitions, 115 flow [2024-06-21 19:02:24,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 112 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-21 19:02:24,387 INFO L231 Difference]: Finished difference. Result has 31 places, 25 transitions, 71 flow [2024-06-21 19:02:24,388 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} [2024-06-21 19:02:24,390 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2024-06-21 19:02:24,391 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 71 flow [2024-06-21 19:02:24,391 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) [2024-06-21 19:02:24,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:02:24,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:02:24,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-21 19:02:24,391 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)] === [2024-06-21 19:02:24,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:02:24,392 INFO L85 PathProgramCache]: Analyzing trace with hash -209632469, now seen corresponding path program 1 times [2024-06-21 19:02:24,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:02:24,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208602569] [2024-06-21 19:02:24,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:02:24,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:02:24,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:02:25,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:02:25,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:02:25,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208602569] [2024-06-21 19:02:25,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208602569] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:02:25,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:02:25,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-21 19:02:25,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243612664] [2024-06-21 19:02:25,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:02:25,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-21 19:02:25,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:02:25,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-21 19:02:25,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-21 19:02:25,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-21 19:02:25,167 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) [2024-06-21 19:02:25,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:02:25,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-21 19:02:25,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:02:25,277 INFO L124 PetriNetUnfolderBase]: 186/348 cut-off events. [2024-06-21 19:02:25,278 INFO L125 PetriNetUnfolderBase]: For 67/67 co-relation queries the response was YES. [2024-06-21 19:02:25,279 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. [2024-06-21 19:02:25,280 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 26 selfloop transitions, 5 changer transitions 0/35 dead transitions. [2024-06-21 19:02:25,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 35 transitions, 159 flow [2024-06-21 19:02:25,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-21 19:02:25,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-21 19:02:25,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 65 transitions. [2024-06-21 19:02:25,282 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5241935483870968 [2024-06-21 19:02:25,282 INFO L175 Difference]: Start difference. First operand has 31 places, 25 transitions, 71 flow. Second operand 4 states and 65 transitions. [2024-06-21 19:02:25,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 35 transitions, 159 flow [2024-06-21 19:02:25,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 35 transitions, 156 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-21 19:02:25,283 INFO L231 Difference]: Finished difference. Result has 34 places, 27 transitions, 95 flow [2024-06-21 19:02:25,284 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} [2024-06-21 19:02:25,284 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 4 predicate places. [2024-06-21 19:02:25,284 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 27 transitions, 95 flow [2024-06-21 19:02:25,285 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) [2024-06-21 19:02:25,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:02:25,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:02:25,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-21 19:02:25,285 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)] === [2024-06-21 19:02:25,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:02:25,286 INFO L85 PathProgramCache]: Analyzing trace with hash 2091328885, now seen corresponding path program 1 times [2024-06-21 19:02:25,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:02:25,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442122975] [2024-06-21 19:02:25,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:02:25,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:02:25,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:02:25,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:02:25,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:02:25,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442122975] [2024-06-21 19:02:25,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442122975] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:02:25,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:02:25,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 19:02:25,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831797909] [2024-06-21 19:02:25,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:02:25,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 19:02:25,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:02:25,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 19:02:25,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-21 19:02:25,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-21 19:02:25,980 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) [2024-06-21 19:02:25,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:02:25,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-21 19:02:25,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:02:26,070 INFO L124 PetriNetUnfolderBase]: 180/340 cut-off events. [2024-06-21 19:02:26,070 INFO L125 PetriNetUnfolderBase]: For 195/195 co-relation queries the response was YES. [2024-06-21 19:02:26,072 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. [2024-06-21 19:02:26,074 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 31 selfloop transitions, 7 changer transitions 0/42 dead transitions. [2024-06-21 19:02:26,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 42 transitions, 211 flow [2024-06-21 19:02:26,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 19:02:26,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 19:02:26,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 80 transitions. [2024-06-21 19:02:26,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5161290322580645 [2024-06-21 19:02:26,077 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 95 flow. Second operand 5 states and 80 transitions. [2024-06-21 19:02:26,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 42 transitions, 211 flow [2024-06-21 19:02:26,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 42 transitions, 202 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-21 19:02:26,079 INFO L231 Difference]: Finished difference. Result has 37 places, 29 transitions, 119 flow [2024-06-21 19:02:26,079 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} [2024-06-21 19:02:26,079 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 7 predicate places. [2024-06-21 19:02:26,079 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 29 transitions, 119 flow [2024-06-21 19:02:26,080 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) [2024-06-21 19:02:26,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:02:26,080 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:02:26,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-21 19:02:26,080 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)] === [2024-06-21 19:02:26,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:02:26,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1135293634, now seen corresponding path program 1 times [2024-06-21 19:02:26,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:02:26,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398894847] [2024-06-21 19:02:26,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:02:26,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:02:26,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:02:27,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:02:27,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:02:27,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398894847] [2024-06-21 19:02:27,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398894847] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:02:27,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:02:27,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:02:27,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807981912] [2024-06-21 19:02:27,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:02:27,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:02:27,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:02:27,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:02:27,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:02:27,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-21 19:02:27,324 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) [2024-06-21 19:02:27,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:02:27,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-21 19:02:27,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:02:27,461 INFO L124 PetriNetUnfolderBase]: 176/330 cut-off events. [2024-06-21 19:02:27,461 INFO L125 PetriNetUnfolderBase]: For 314/314 co-relation queries the response was YES. [2024-06-21 19:02:27,462 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. [2024-06-21 19:02:27,463 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 31 selfloop transitions, 8 changer transitions 0/43 dead transitions. [2024-06-21 19:02:27,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 43 transitions, 225 flow [2024-06-21 19:02:27,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 19:02:27,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 19:02:27,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 89 transitions. [2024-06-21 19:02:27,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.478494623655914 [2024-06-21 19:02:27,465 INFO L175 Difference]: Start difference. First operand has 37 places, 29 transitions, 119 flow. Second operand 6 states and 89 transitions. [2024-06-21 19:02:27,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 43 transitions, 225 flow [2024-06-21 19:02:27,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 43 transitions, 210 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-21 19:02:27,467 INFO L231 Difference]: Finished difference. Result has 39 places, 28 transitions, 116 flow [2024-06-21 19:02:27,467 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} [2024-06-21 19:02:27,467 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 9 predicate places. [2024-06-21 19:02:27,468 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 28 transitions, 116 flow [2024-06-21 19:02:27,468 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) [2024-06-21 19:02:27,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:02:27,468 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:02:27,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-21 19:02:27,468 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)] === [2024-06-21 19:02:27,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:02:27,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1523058016, now seen corresponding path program 1 times [2024-06-21 19:02:27,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:02:27,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287811842] [2024-06-21 19:02:27,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:02:27,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:02:27,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:02:28,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:02:28,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:02:28,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287811842] [2024-06-21 19:02:28,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287811842] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:02:28,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:02:28,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 19:02:28,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288643138] [2024-06-21 19:02:28,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:02:28,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 19:02:28,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:02:28,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 19:02:28,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-21 19:02:28,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:02:28,101 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) [2024-06-21 19:02:28,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:02:28,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:02:28,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:02:28,212 INFO L124 PetriNetUnfolderBase]: 174/327 cut-off events. [2024-06-21 19:02:28,216 INFO L125 PetriNetUnfolderBase]: For 479/479 co-relation queries the response was YES. [2024-06-21 19:02:28,217 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. [2024-06-21 19:02:28,218 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 25 selfloop transitions, 8 changer transitions 0/36 dead transitions. [2024-06-21 19:02:28,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 36 transitions, 208 flow [2024-06-21 19:02:28,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 19:02:28,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 19:02:28,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 60 transitions. [2024-06-21 19:02:28,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-21 19:02:28,220 INFO L175 Difference]: Start difference. First operand has 39 places, 28 transitions, 116 flow. Second operand 5 states and 60 transitions. [2024-06-21 19:02:28,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 36 transitions, 208 flow [2024-06-21 19:02:28,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 36 transitions, 186 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-21 19:02:28,225 INFO L231 Difference]: Finished difference. Result has 41 places, 32 transitions, 140 flow [2024-06-21 19:02:28,225 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} [2024-06-21 19:02:28,227 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 11 predicate places. [2024-06-21 19:02:28,229 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 32 transitions, 140 flow [2024-06-21 19:02:28,229 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) [2024-06-21 19:02:28,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:02:28,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:02:28,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-21 19:02:28,234 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)] === [2024-06-21 19:02:28,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:02:28,234 INFO L85 PathProgramCache]: Analyzing trace with hash -542382381, now seen corresponding path program 1 times [2024-06-21 19:02:28,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:02:28,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889578005] [2024-06-21 19:02:28,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:02:28,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:02:28,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:02:28,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:02:28,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:02:28,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889578005] [2024-06-21 19:02:28,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889578005] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:02:28,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:02:28,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 19:02:28,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983595436] [2024-06-21 19:02:28,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:02:28,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 19:02:28,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:02:28,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 19:02:28,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-21 19:02:28,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:02:28,960 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) [2024-06-21 19:02:28,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:02:28,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:02:28,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:02:29,084 INFO L124 PetriNetUnfolderBase]: 181/340 cut-off events. [2024-06-21 19:02:29,084 INFO L125 PetriNetUnfolderBase]: For 629/629 co-relation queries the response was YES. [2024-06-21 19:02:29,086 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. [2024-06-21 19:02:29,087 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 32 selfloop transitions, 11 changer transitions 0/46 dead transitions. [2024-06-21 19:02:29,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 46 transitions, 272 flow [2024-06-21 19:02:29,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 19:02:29,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 19:02:29,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 75 transitions. [2024-06-21 19:02:29,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-21 19:02:29,090 INFO L175 Difference]: Start difference. First operand has 41 places, 32 transitions, 140 flow. Second operand 6 states and 75 transitions. [2024-06-21 19:02:29,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 46 transitions, 272 flow [2024-06-21 19:02:29,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 46 transitions, 261 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-21 19:02:29,093 INFO L231 Difference]: Finished difference. Result has 46 places, 37 transitions, 189 flow [2024-06-21 19:02:29,093 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} [2024-06-21 19:02:29,095 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 16 predicate places. [2024-06-21 19:02:29,095 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 37 transitions, 189 flow [2024-06-21 19:02:29,095 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) [2024-06-21 19:02:29,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:02:29,095 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:02:29,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-21 19:02:29,096 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)] === [2024-06-21 19:02:29,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:02:29,096 INFO L85 PathProgramCache]: Analyzing trace with hash 697773711, now seen corresponding path program 2 times [2024-06-21 19:02:29,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:02:29,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103032072] [2024-06-21 19:02:29,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:02:29,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:02:29,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:02:29,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:02:29,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:02:29,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103032072] [2024-06-21 19:02:29,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103032072] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:02:29,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:02:29,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 19:02:29,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130429528] [2024-06-21 19:02:29,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:02:29,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 19:02:29,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:02:29,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 19:02:29,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-21 19:02:29,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:02:29,866 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) [2024-06-21 19:02:29,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:02:29,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:02:29,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:02:30,016 INFO L124 PetriNetUnfolderBase]: 184/345 cut-off events. [2024-06-21 19:02:30,017 INFO L125 PetriNetUnfolderBase]: For 928/928 co-relation queries the response was YES. [2024-06-21 19:02:30,017 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. [2024-06-21 19:02:30,019 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 30 selfloop transitions, 13 changer transitions 0/46 dead transitions. [2024-06-21 19:02:30,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 46 transitions, 312 flow [2024-06-21 19:02:30,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 19:02:30,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 19:02:30,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 72 transitions. [2024-06-21 19:02:30,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-21 19:02:30,020 INFO L175 Difference]: Start difference. First operand has 46 places, 37 transitions, 189 flow. Second operand 6 states and 72 transitions. [2024-06-21 19:02:30,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 46 transitions, 312 flow [2024-06-21 19:02:30,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 46 transitions, 287 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-21 19:02:30,022 INFO L231 Difference]: Finished difference. Result has 49 places, 40 transitions, 220 flow [2024-06-21 19:02:30,022 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} [2024-06-21 19:02:30,023 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 19 predicate places. [2024-06-21 19:02:30,023 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 40 transitions, 220 flow [2024-06-21 19:02:30,023 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) [2024-06-21 19:02:30,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:02:30,023 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:02:30,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-21 19:02:30,024 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)] === [2024-06-21 19:02:30,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:02:30,024 INFO L85 PathProgramCache]: Analyzing trace with hash 925132671, now seen corresponding path program 3 times [2024-06-21 19:02:30,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:02:30,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378826854] [2024-06-21 19:02:30,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:02:30,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:02:30,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:02:30,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:02:30,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:02:30,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378826854] [2024-06-21 19:02:30,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378826854] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:02:30,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:02:30,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 19:02:30,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863206417] [2024-06-21 19:02:30,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:02:30,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 19:02:30,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:02:30,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 19:02:30,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-21 19:02:30,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:02:30,742 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) [2024-06-21 19:02:30,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:02:30,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:02:30,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:02:30,873 INFO L124 PetriNetUnfolderBase]: 182/342 cut-off events. [2024-06-21 19:02:30,873 INFO L125 PetriNetUnfolderBase]: For 1225/1225 co-relation queries the response was YES. [2024-06-21 19:02:30,874 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. [2024-06-21 19:02:30,875 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 26 selfloop transitions, 18 changer transitions 0/47 dead transitions. [2024-06-21 19:02:30,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 47 transitions, 336 flow [2024-06-21 19:02:30,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 19:02:30,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 19:02:30,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 72 transitions. [2024-06-21 19:02:30,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-21 19:02:30,877 INFO L175 Difference]: Start difference. First operand has 49 places, 40 transitions, 220 flow. Second operand 6 states and 72 transitions. [2024-06-21 19:02:30,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 47 transitions, 336 flow [2024-06-21 19:02:30,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 47 transitions, 312 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-21 19:02:30,879 INFO L231 Difference]: Finished difference. Result has 53 places, 42 transitions, 257 flow [2024-06-21 19:02:30,879 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} [2024-06-21 19:02:30,880 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 23 predicate places. [2024-06-21 19:02:30,880 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 42 transitions, 257 flow [2024-06-21 19:02:30,880 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) [2024-06-21 19:02:30,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:02:30,880 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:02:30,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-21 19:02:30,880 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)] === [2024-06-21 19:02:30,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:02:30,881 INFO L85 PathProgramCache]: Analyzing trace with hash 703495567, now seen corresponding path program 1 times [2024-06-21 19:02:30,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:02:30,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937774631] [2024-06-21 19:02:30,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:02:30,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:02:30,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:02:31,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:02:31,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:02:31,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937774631] [2024-06-21 19:02:31,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937774631] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:02:31,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:02:31,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:02:31,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550613660] [2024-06-21 19:02:31,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:02:31,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:02:31,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:02:31,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:02:31,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:02:31,713 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:02:31,713 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) [2024-06-21 19:02:31,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:02:31,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:02:31,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:02:31,832 INFO L124 PetriNetUnfolderBase]: 209/378 cut-off events. [2024-06-21 19:02:31,832 INFO L125 PetriNetUnfolderBase]: For 1612/1612 co-relation queries the response was YES. [2024-06-21 19:02:31,833 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. [2024-06-21 19:02:31,835 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 38 selfloop transitions, 12 changer transitions 0/52 dead transitions. [2024-06-21 19:02:31,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 52 transitions, 388 flow [2024-06-21 19:02:31,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 19:02:31,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 19:02:31,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 72 transitions. [2024-06-21 19:02:31,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3317972350230415 [2024-06-21 19:02:31,836 INFO L175 Difference]: Start difference. First operand has 53 places, 42 transitions, 257 flow. Second operand 7 states and 72 transitions. [2024-06-21 19:02:31,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 52 transitions, 388 flow [2024-06-21 19:02:31,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 52 transitions, 342 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-21 19:02:31,841 INFO L231 Difference]: Finished difference. Result has 57 places, 46 transitions, 266 flow [2024-06-21 19:02:31,841 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} [2024-06-21 19:02:31,842 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 27 predicate places. [2024-06-21 19:02:31,842 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 46 transitions, 266 flow [2024-06-21 19:02:31,842 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) [2024-06-21 19:02:31,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:02:31,842 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:02:31,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-21 19:02:31,842 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)] === [2024-06-21 19:02:31,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:02:31,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1399700031, now seen corresponding path program 1 times [2024-06-21 19:02:31,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:02:31,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957681760] [2024-06-21 19:02:31,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:02:31,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:02:31,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:02:32,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:02:32,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:02:32,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957681760] [2024-06-21 19:02:32,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957681760] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:02:32,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:02:32,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:02:32,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997692735] [2024-06-21 19:02:32,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:02:32,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:02:32,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:02:32,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:02:32,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:02:32,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:02:32,506 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) [2024-06-21 19:02:32,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:02:32,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:02:32,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:02:32,677 INFO L124 PetriNetUnfolderBase]: 189/361 cut-off events. [2024-06-21 19:02:32,677 INFO L125 PetriNetUnfolderBase]: For 1763/1763 co-relation queries the response was YES. [2024-06-21 19:02:32,678 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. [2024-06-21 19:02:32,679 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 44 selfloop transitions, 18 changer transitions 0/66 dead transitions. [2024-06-21 19:02:32,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 66 transitions, 458 flow [2024-06-21 19:02:32,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 19:02:32,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 19:02:32,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 88 transitions. [2024-06-21 19:02:32,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4055299539170507 [2024-06-21 19:02:32,681 INFO L175 Difference]: Start difference. First operand has 57 places, 46 transitions, 266 flow. Second operand 7 states and 88 transitions. [2024-06-21 19:02:32,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 66 transitions, 458 flow [2024-06-21 19:02:32,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 66 transitions, 435 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-21 19:02:32,685 INFO L231 Difference]: Finished difference. Result has 61 places, 53 transitions, 326 flow [2024-06-21 19:02:32,685 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} [2024-06-21 19:02:32,686 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 31 predicate places. [2024-06-21 19:02:32,686 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 53 transitions, 326 flow [2024-06-21 19:02:32,686 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) [2024-06-21 19:02:32,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:02:32,687 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:02:32,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-21 19:02:32,687 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)] === [2024-06-21 19:02:32,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:02:32,687 INFO L85 PathProgramCache]: Analyzing trace with hash 906233859, now seen corresponding path program 2 times [2024-06-21 19:02:32,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:02:32,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505819339] [2024-06-21 19:02:32,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:02:32,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:02:32,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:02:33,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:02:33,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:02:33,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505819339] [2024-06-21 19:02:33,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505819339] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:02:33,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:02:33,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:02:33,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306739733] [2024-06-21 19:02:33,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:02:33,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:02:33,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:02:33,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:02:33,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:02:33,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:02:33,331 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) [2024-06-21 19:02:33,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:02:33,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:02:33,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:02:33,529 INFO L124 PetriNetUnfolderBase]: 200/380 cut-off events. [2024-06-21 19:02:33,529 INFO L125 PetriNetUnfolderBase]: For 2170/2170 co-relation queries the response was YES. [2024-06-21 19:02:33,530 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. [2024-06-21 19:02:33,532 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 47 selfloop transitions, 20 changer transitions 0/71 dead transitions. [2024-06-21 19:02:33,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 71 transitions, 540 flow [2024-06-21 19:02:33,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 19:02:33,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 19:02:33,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 89 transitions. [2024-06-21 19:02:33,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41013824884792627 [2024-06-21 19:02:33,533 INFO L175 Difference]: Start difference. First operand has 61 places, 53 transitions, 326 flow. Second operand 7 states and 89 transitions. [2024-06-21 19:02:33,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 71 transitions, 540 flow [2024-06-21 19:02:33,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 71 transitions, 524 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-06-21 19:02:33,537 INFO L231 Difference]: Finished difference. Result has 69 places, 60 transitions, 425 flow [2024-06-21 19:02:33,537 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} [2024-06-21 19:02:33,538 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 39 predicate places. [2024-06-21 19:02:33,538 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 60 transitions, 425 flow [2024-06-21 19:02:33,539 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) [2024-06-21 19:02:33,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:02:33,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:02:33,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-21 19:02:33,539 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)] === [2024-06-21 19:02:33,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:02:33,540 INFO L85 PathProgramCache]: Analyzing trace with hash 906238509, now seen corresponding path program 3 times [2024-06-21 19:02:33,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:02:33,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756375680] [2024-06-21 19:02:33,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:02:33,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:02:33,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:02:34,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:02:34,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:02:34,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756375680] [2024-06-21 19:02:34,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756375680] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:02:34,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:02:34,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:02:34,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682831843] [2024-06-21 19:02:34,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:02:34,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:02:34,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:02:34,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:02:34,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:02:34,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:02:34,321 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) [2024-06-21 19:02:34,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:02:34,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:02:34,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:02:34,489 INFO L124 PetriNetUnfolderBase]: 208/395 cut-off events. [2024-06-21 19:02:34,489 INFO L125 PetriNetUnfolderBase]: For 2806/2806 co-relation queries the response was YES. [2024-06-21 19:02:34,490 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. [2024-06-21 19:02:34,492 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 45 selfloop transitions, 26 changer transitions 0/75 dead transitions. [2024-06-21 19:02:34,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 75 transitions, 655 flow [2024-06-21 19:02:34,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 19:02:34,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 19:02:34,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 91 transitions. [2024-06-21 19:02:34,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-21 19:02:34,494 INFO L175 Difference]: Start difference. First operand has 69 places, 60 transitions, 425 flow. Second operand 7 states and 91 transitions. [2024-06-21 19:02:34,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 75 transitions, 655 flow [2024-06-21 19:02:34,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 75 transitions, 623 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-06-21 19:02:34,501 INFO L231 Difference]: Finished difference. Result has 75 places, 64 transitions, 506 flow [2024-06-21 19:02:34,502 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} [2024-06-21 19:02:34,502 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 45 predicate places. [2024-06-21 19:02:34,502 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 64 transitions, 506 flow [2024-06-21 19:02:34,502 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) [2024-06-21 19:02:34,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:02:34,503 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:02:34,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-21 19:02:34,503 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)] === [2024-06-21 19:02:34,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:02:34,504 INFO L85 PathProgramCache]: Analyzing trace with hash 156029843, now seen corresponding path program 4 times [2024-06-21 19:02:34,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:02:34,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081802940] [2024-06-21 19:02:34,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:02:34,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:02:34,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:02:35,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:02:35,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:02:35,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081802940] [2024-06-21 19:02:35,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081802940] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:02:35,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:02:35,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:02:35,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420891529] [2024-06-21 19:02:35,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:02:35,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:02:35,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:02:35,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:02:35,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:02:35,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:02:35,260 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) [2024-06-21 19:02:35,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:02:35,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:02:35,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:02:35,468 INFO L124 PetriNetUnfolderBase]: 211/400 cut-off events. [2024-06-21 19:02:35,468 INFO L125 PetriNetUnfolderBase]: For 3447/3447 co-relation queries the response was YES. [2024-06-21 19:02:35,469 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. [2024-06-21 19:02:35,471 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 50 selfloop transitions, 22 changer transitions 0/76 dead transitions. [2024-06-21 19:02:35,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 76 transitions, 715 flow [2024-06-21 19:02:35,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 19:02:35,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 19:02:35,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 87 transitions. [2024-06-21 19:02:35,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4009216589861751 [2024-06-21 19:02:35,473 INFO L175 Difference]: Start difference. First operand has 75 places, 64 transitions, 506 flow. Second operand 7 states and 87 transitions. [2024-06-21 19:02:35,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 76 transitions, 715 flow [2024-06-21 19:02:35,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 76 transitions, 677 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-21 19:02:35,478 INFO L231 Difference]: Finished difference. Result has 80 places, 68 transitions, 569 flow [2024-06-21 19:02:35,478 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} [2024-06-21 19:02:35,479 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 50 predicate places. [2024-06-21 19:02:35,479 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 68 transitions, 569 flow [2024-06-21 19:02:35,479 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) [2024-06-21 19:02:35,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:02:35,480 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:02:35,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-21 19:02:35,480 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)] === [2024-06-21 19:02:35,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:02:35,480 INFO L85 PathProgramCache]: Analyzing trace with hash 156149813, now seen corresponding path program 5 times [2024-06-21 19:02:35,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:02:35,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39718202] [2024-06-21 19:02:35,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:02:35,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:02:35,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:02:36,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:02:36,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:02:36,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39718202] [2024-06-21 19:02:36,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39718202] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:02:36,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:02:36,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:02:36,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911254161] [2024-06-21 19:02:36,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:02:36,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:02:36,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:02:36,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:02:36,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:02:36,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:02:36,272 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) [2024-06-21 19:02:36,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:02:36,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:02:36,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:02:36,543 INFO L124 PetriNetUnfolderBase]: 219/415 cut-off events. [2024-06-21 19:02:36,543 INFO L125 PetriNetUnfolderBase]: For 4153/4153 co-relation queries the response was YES. [2024-06-21 19:02:36,544 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. [2024-06-21 19:02:36,546 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 50 selfloop transitions, 26 changer transitions 0/80 dead transitions. [2024-06-21 19:02:36,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 80 transitions, 819 flow [2024-06-21 19:02:36,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:02:36,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:02:36,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-21 19:02:36,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-21 19:02:36,548 INFO L175 Difference]: Start difference. First operand has 80 places, 68 transitions, 569 flow. Second operand 8 states and 96 transitions. [2024-06-21 19:02:36,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 80 transitions, 819 flow [2024-06-21 19:02:36,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 80 transitions, 784 flow, removed 11 selfloop flow, removed 1 redundant places. [2024-06-21 19:02:36,557 INFO L231 Difference]: Finished difference. Result has 88 places, 72 transitions, 658 flow [2024-06-21 19:02:36,557 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} [2024-06-21 19:02:36,558 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 58 predicate places. [2024-06-21 19:02:36,558 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 72 transitions, 658 flow [2024-06-21 19:02:36,558 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) [2024-06-21 19:02:36,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:02:36,559 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:02:36,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-21 19:02:36,559 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)] === [2024-06-21 19:02:36,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:02:36,559 INFO L85 PathProgramCache]: Analyzing trace with hash 333281333, now seen corresponding path program 6 times [2024-06-21 19:02:36,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:02:36,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455328945] [2024-06-21 19:02:36,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:02:36,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:02:36,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:02:37,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:02:37,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:02:37,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455328945] [2024-06-21 19:02:37,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455328945] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:02:37,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:02:37,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:02:37,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053155131] [2024-06-21 19:02:37,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:02:37,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:02:37,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:02:37,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:02:37,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:02:37,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:02:37,440 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) [2024-06-21 19:02:37,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:02:37,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:02:37,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:02:37,596 INFO L124 PetriNetUnfolderBase]: 217/413 cut-off events. [2024-06-21 19:02:37,597 INFO L125 PetriNetUnfolderBase]: For 4928/4928 co-relation queries the response was YES. [2024-06-21 19:02:37,598 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. [2024-06-21 19:02:37,600 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 37 selfloop transitions, 40 changer transitions 0/81 dead transitions. [2024-06-21 19:02:37,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 81 transitions, 888 flow [2024-06-21 19:02:37,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 19:02:37,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 19:02:37,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 88 transitions. [2024-06-21 19:02:37,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4055299539170507 [2024-06-21 19:02:37,601 INFO L175 Difference]: Start difference. First operand has 88 places, 72 transitions, 658 flow. Second operand 7 states and 88 transitions. [2024-06-21 19:02:37,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 81 transitions, 888 flow [2024-06-21 19:02:37,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 81 transitions, 841 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-21 19:02:37,607 INFO L231 Difference]: Finished difference. Result has 92 places, 74 transitions, 732 flow [2024-06-21 19:02:37,608 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} [2024-06-21 19:02:37,609 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 62 predicate places. [2024-06-21 19:02:37,609 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 74 transitions, 732 flow [2024-06-21 19:02:37,609 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) [2024-06-21 19:02:37,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:02:37,609 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:02:37,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-21 19:02:37,609 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)] === [2024-06-21 19:02:37,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:02:37,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1385410755, now seen corresponding path program 1 times [2024-06-21 19:02:37,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:02:37,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764050401] [2024-06-21 19:02:37,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:02:37,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:02:37,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:02:38,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:02:38,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:02:38,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764050401] [2024-06-21 19:02:38,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764050401] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:02:38,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:02:38,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:02:38,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144907895] [2024-06-21 19:02:38,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:02:38,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:02:38,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:02:38,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:02:38,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:02:38,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:02:38,855 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) [2024-06-21 19:02:38,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:02:38,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:02:38,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:02:39,127 INFO L124 PetriNetUnfolderBase]: 265/474 cut-off events. [2024-06-21 19:02:39,127 INFO L125 PetriNetUnfolderBase]: For 5998/5998 co-relation queries the response was YES. [2024-06-21 19:02:39,129 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. [2024-06-21 19:02:39,132 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 67 selfloop transitions, 14 changer transitions 0/83 dead transitions. [2024-06-21 19:02:39,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 83 transitions, 920 flow [2024-06-21 19:02:39,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:02:39,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:02:39,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 80 transitions. [2024-06-21 19:02:39,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-21 19:02:39,133 INFO L175 Difference]: Start difference. First operand has 92 places, 74 transitions, 732 flow. Second operand 8 states and 80 transitions. [2024-06-21 19:02:39,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 83 transitions, 920 flow [2024-06-21 19:02:39,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 83 transitions, 815 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-21 19:02:39,143 INFO L231 Difference]: Finished difference. Result has 95 places, 76 transitions, 674 flow [2024-06-21 19:02:39,143 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} [2024-06-21 19:02:39,144 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 65 predicate places. [2024-06-21 19:02:39,144 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 76 transitions, 674 flow [2024-06-21 19:02:39,144 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) [2024-06-21 19:02:39,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:02:39,145 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:02:39,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-21 19:02:39,145 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)] === [2024-06-21 19:02:39,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:02:39,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1821734986, now seen corresponding path program 1 times [2024-06-21 19:02:39,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:02:39,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139195783] [2024-06-21 19:02:39,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:02:39,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:02:39,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:02:39,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:02:39,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:02:39,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139195783] [2024-06-21 19:02:39,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139195783] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:02:39,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:02:39,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:02:39,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89360123] [2024-06-21 19:02:39,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:02:39,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:02:39,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:02:39,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:02:39,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:02:39,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-21 19:02:39,929 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) [2024-06-21 19:02:39,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:02:39,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-21 19:02:39,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:02:40,149 INFO L124 PetriNetUnfolderBase]: 203/402 cut-off events. [2024-06-21 19:02:40,149 INFO L125 PetriNetUnfolderBase]: For 5540/5544 co-relation queries the response was YES. [2024-06-21 19:02:40,150 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. [2024-06-21 19:02:40,152 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 47 selfloop transitions, 31 changer transitions 0/89 dead transitions. [2024-06-21 19:02:40,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 89 transitions, 901 flow [2024-06-21 19:02:40,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 19:02:40,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 19:02:40,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 90 transitions. [2024-06-21 19:02:40,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147465437788018 [2024-06-21 19:02:40,153 INFO L175 Difference]: Start difference. First operand has 95 places, 76 transitions, 674 flow. Second operand 7 states and 90 transitions. [2024-06-21 19:02:40,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 89 transitions, 901 flow [2024-06-21 19:02:40,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 89 transitions, 870 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-21 19:02:40,160 INFO L231 Difference]: Finished difference. Result has 96 places, 80 transitions, 771 flow [2024-06-21 19:02:40,160 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} [2024-06-21 19:02:40,160 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 66 predicate places. [2024-06-21 19:02:40,160 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 80 transitions, 771 flow [2024-06-21 19:02:40,161 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) [2024-06-21 19:02:40,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:02:40,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:02:40,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-21 19:02:40,161 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)] === [2024-06-21 19:02:40,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:02:40,161 INFO L85 PathProgramCache]: Analyzing trace with hash 858476974, now seen corresponding path program 2 times [2024-06-21 19:02:40,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:02:40,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423372935] [2024-06-21 19:02:40,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:02:40,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:02:40,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:02:41,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:02:41,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:02:41,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423372935] [2024-06-21 19:02:41,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423372935] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:02:41,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:02:41,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:02:41,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857699462] [2024-06-21 19:02:41,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:02:41,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:02:41,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:02:41,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:02:41,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:02:41,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:02:41,103 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) [2024-06-21 19:02:41,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:02:41,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:02:41,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:02:41,369 INFO L124 PetriNetUnfolderBase]: 229/437 cut-off events. [2024-06-21 19:02:41,369 INFO L125 PetriNetUnfolderBase]: For 6479/6479 co-relation queries the response was YES. [2024-06-21 19:02:41,371 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. [2024-06-21 19:02:41,373 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 64 selfloop transitions, 30 changer transitions 0/98 dead transitions. [2024-06-21 19:02:41,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 98 transitions, 1052 flow [2024-06-21 19:02:41,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:02:41,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:02:41,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 99 transitions. [2024-06-21 19:02:41,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39919354838709675 [2024-06-21 19:02:41,374 INFO L175 Difference]: Start difference. First operand has 96 places, 80 transitions, 771 flow. Second operand 8 states and 99 transitions. [2024-06-21 19:02:41,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 98 transitions, 1052 flow [2024-06-21 19:02:41,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 98 transitions, 1021 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-21 19:02:41,384 INFO L231 Difference]: Finished difference. Result has 102 places, 84 transitions, 867 flow [2024-06-21 19:02:41,384 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} [2024-06-21 19:02:41,385 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 72 predicate places. [2024-06-21 19:02:41,385 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 84 transitions, 867 flow [2024-06-21 19:02:41,385 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) [2024-06-21 19:02:41,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:02:41,385 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:02:41,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-21 19:02:41,385 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)] === [2024-06-21 19:02:41,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:02:41,386 INFO L85 PathProgramCache]: Analyzing trace with hash 865981144, now seen corresponding path program 3 times [2024-06-21 19:02:41,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:02:41,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438210130] [2024-06-21 19:02:41,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:02:41,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:02:41,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:02:42,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:02:42,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:02:42,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438210130] [2024-06-21 19:02:42,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438210130] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:02:42,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:02:42,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:02:42,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598270845] [2024-06-21 19:02:42,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:02:42,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:02:42,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:02:42,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:02:42,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:02:42,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:02:42,429 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) [2024-06-21 19:02:42,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:02:42,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:02:42,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:02:42,658 INFO L124 PetriNetUnfolderBase]: 232/443 cut-off events. [2024-06-21 19:02:42,658 INFO L125 PetriNetUnfolderBase]: For 7361/7361 co-relation queries the response was YES. [2024-06-21 19:02:42,659 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. [2024-06-21 19:02:42,661 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 64 selfloop transitions, 30 changer transitions 0/98 dead transitions. [2024-06-21 19:02:42,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 98 transitions, 1117 flow [2024-06-21 19:02:42,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:02:42,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:02:42,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 95 transitions. [2024-06-21 19:02:42,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38306451612903225 [2024-06-21 19:02:42,663 INFO L175 Difference]: Start difference. First operand has 102 places, 84 transitions, 867 flow. Second operand 8 states and 95 transitions. [2024-06-21 19:02:42,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 98 transitions, 1117 flow [2024-06-21 19:02:42,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 98 transitions, 1051 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-21 19:02:42,670 INFO L231 Difference]: Finished difference. Result has 105 places, 86 transitions, 901 flow [2024-06-21 19:02:42,671 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} [2024-06-21 19:02:42,671 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 75 predicate places. [2024-06-21 19:02:42,671 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 86 transitions, 901 flow [2024-06-21 19:02:42,671 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) [2024-06-21 19:02:42,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:02:42,671 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:02:42,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-21 19:02:42,672 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)] === [2024-06-21 19:02:42,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:02:42,672 INFO L85 PathProgramCache]: Analyzing trace with hash -2081539160, now seen corresponding path program 4 times [2024-06-21 19:02:42,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:02:42,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654692124] [2024-06-21 19:02:42,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:02:42,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:02:42,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:02:43,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:02:43,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:02:43,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654692124] [2024-06-21 19:02:43,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654692124] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:02:43,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:02:43,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:02:43,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901005254] [2024-06-21 19:02:43,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:02:43,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:02:43,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:02:43,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:02:43,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:02:43,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:02:43,712 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) [2024-06-21 19:02:43,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:02:43,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:02:43,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:02:43,972 INFO L124 PetriNetUnfolderBase]: 233/444 cut-off events. [2024-06-21 19:02:43,973 INFO L125 PetriNetUnfolderBase]: For 8031/8031 co-relation queries the response was YES. [2024-06-21 19:02:43,974 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. [2024-06-21 19:02:43,977 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 68 selfloop transitions, 27 changer transitions 0/99 dead transitions. [2024-06-21 19:02:43,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 99 transitions, 1155 flow [2024-06-21 19:02:43,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 19:02:43,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 19:02:43,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 91 transitions. [2024-06-21 19:02:43,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-21 19:02:43,979 INFO L175 Difference]: Start difference. First operand has 105 places, 86 transitions, 901 flow. Second operand 7 states and 91 transitions. [2024-06-21 19:02:43,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 99 transitions, 1155 flow [2024-06-21 19:02:43,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 99 transitions, 1071 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-21 19:02:43,990 INFO L231 Difference]: Finished difference. Result has 106 places, 88 transitions, 918 flow [2024-06-21 19:02:43,990 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} [2024-06-21 19:02:43,991 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 76 predicate places. [2024-06-21 19:02:43,991 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 88 transitions, 918 flow [2024-06-21 19:02:43,993 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) [2024-06-21 19:02:43,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:02:43,993 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:02:43,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-21 19:02:43,993 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)] === [2024-06-21 19:02:43,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:02:43,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1971370058, now seen corresponding path program 1 times [2024-06-21 19:02:43,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:02:43,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357657015] [2024-06-21 19:02:43,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:02:43,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:02:44,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:02:44,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:02:44,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:02:44,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357657015] [2024-06-21 19:02:44,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357657015] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:02:44,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:02:44,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:02:44,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591705572] [2024-06-21 19:02:44,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:02:44,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:02:44,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:02:44,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:02:44,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:02:44,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:02:44,903 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) [2024-06-21 19:02:44,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:02:44,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:02:44,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:02:45,069 INFO L124 PetriNetUnfolderBase]: 296/527 cut-off events. [2024-06-21 19:02:45,069 INFO L125 PetriNetUnfolderBase]: For 9476/9476 co-relation queries the response was YES. [2024-06-21 19:02:45,071 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. [2024-06-21 19:02:45,073 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 85 selfloop transitions, 16 changer transitions 0/103 dead transitions. [2024-06-21 19:02:45,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 103 transitions, 1174 flow [2024-06-21 19:02:45,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:02:45,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:02:45,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 86 transitions. [2024-06-21 19:02:45,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3467741935483871 [2024-06-21 19:02:45,074 INFO L175 Difference]: Start difference. First operand has 106 places, 88 transitions, 918 flow. Second operand 8 states and 86 transitions. [2024-06-21 19:02:45,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 103 transitions, 1174 flow [2024-06-21 19:02:45,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 103 transitions, 1109 flow, removed 16 selfloop flow, removed 3 redundant places. [2024-06-21 19:02:45,085 INFO L231 Difference]: Finished difference. Result has 112 places, 92 transitions, 925 flow [2024-06-21 19:02:45,086 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} [2024-06-21 19:02:45,086 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 82 predicate places. [2024-06-21 19:02:45,086 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 92 transitions, 925 flow [2024-06-21 19:02:45,086 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) [2024-06-21 19:02:45,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:02:45,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:02:45,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-21 19:02:45,087 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)] === [2024-06-21 19:02:45,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:02:45,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1546428800, now seen corresponding path program 5 times [2024-06-21 19:02:45,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:02:45,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366465796] [2024-06-21 19:02:45,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:02:45,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:02:45,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:02:46,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:02:46,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:02:46,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366465796] [2024-06-21 19:02:46,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366465796] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:02:46,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:02:46,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:02:46,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895061653] [2024-06-21 19:02:46,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:02:46,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:02:46,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:02:46,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:02:46,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:02:46,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:02:46,237 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) [2024-06-21 19:02:46,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:02:46,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:02:46,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:02:46,472 INFO L124 PetriNetUnfolderBase]: 241/458 cut-off events. [2024-06-21 19:02:46,472 INFO L125 PetriNetUnfolderBase]: For 9263/9271 co-relation queries the response was YES. [2024-06-21 19:02:46,474 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. [2024-06-21 19:02:46,476 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 60 selfloop transitions, 39 changer transitions 0/104 dead transitions. [2024-06-21 19:02:46,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 104 transitions, 1187 flow [2024-06-21 19:02:46,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 19:02:46,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 19:02:46,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 91 transitions. [2024-06-21 19:02:46,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-21 19:02:46,492 INFO L175 Difference]: Start difference. First operand has 112 places, 92 transitions, 925 flow. Second operand 7 states and 91 transitions. [2024-06-21 19:02:46,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 104 transitions, 1187 flow [2024-06-21 19:02:46,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 104 transitions, 1148 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-21 19:02:46,504 INFO L231 Difference]: Finished difference. Result has 114 places, 94 transitions, 1013 flow [2024-06-21 19:02:46,504 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} [2024-06-21 19:02:46,505 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 84 predicate places. [2024-06-21 19:02:46,505 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 94 transitions, 1013 flow [2024-06-21 19:02:46,505 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) [2024-06-21 19:02:46,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:02:46,505 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:02:46,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-21 19:02:46,506 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)] === [2024-06-21 19:02:46,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:02:46,506 INFO L85 PathProgramCache]: Analyzing trace with hash 325269062, now seen corresponding path program 6 times [2024-06-21 19:02:46,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:02:46,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755391336] [2024-06-21 19:02:46,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:02:46,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:02:46,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:02:47,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:02:47,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:02:47,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755391336] [2024-06-21 19:02:47,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755391336] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:02:47,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:02:47,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:02:47,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53894915] [2024-06-21 19:02:47,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:02:47,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:02:47,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:02:47,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:02:47,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:02:47,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:02:47,613 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) [2024-06-21 19:02:47,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:02:47,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:02:47,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:02:47,939 INFO L124 PetriNetUnfolderBase]: 239/455 cut-off events. [2024-06-21 19:02:47,939 INFO L125 PetriNetUnfolderBase]: For 10095/10103 co-relation queries the response was YES. [2024-06-21 19:02:47,940 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. [2024-06-21 19:02:47,945 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 70 selfloop transitions, 27 changer transitions 0/102 dead transitions. [2024-06-21 19:02:47,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 102 transitions, 1229 flow [2024-06-21 19:02:47,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 19:02:47,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 19:02:47,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 88 transitions. [2024-06-21 19:02:47,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4055299539170507 [2024-06-21 19:02:47,946 INFO L175 Difference]: Start difference. First operand has 114 places, 94 transitions, 1013 flow. Second operand 7 states and 88 transitions. [2024-06-21 19:02:47,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 102 transitions, 1229 flow [2024-06-21 19:02:47,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 102 transitions, 1112 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-21 19:02:47,959 INFO L231 Difference]: Finished difference. Result has 116 places, 94 transitions, 958 flow [2024-06-21 19:02:47,959 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} [2024-06-21 19:02:47,960 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 86 predicate places. [2024-06-21 19:02:47,960 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 94 transitions, 958 flow [2024-06-21 19:02:47,960 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) [2024-06-21 19:02:47,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:02:47,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:02:47,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-21 19:02:47,961 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)] === [2024-06-21 19:02:47,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:02:47,961 INFO L85 PathProgramCache]: Analyzing trace with hash 541959120, now seen corresponding path program 7 times [2024-06-21 19:02:47,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:02:47,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458960444] [2024-06-21 19:02:47,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:02:47,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:02:47,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:02:49,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:02:49,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:02:49,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458960444] [2024-06-21 19:02:49,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458960444] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:02:49,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:02:49,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:02:49,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729311279] [2024-06-21 19:02:49,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:02:49,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:02:49,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:02:49,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:02:49,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:02:49,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:02:49,112 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) [2024-06-21 19:02:49,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:02:49,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:02:49,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:02:49,366 INFO L124 PetriNetUnfolderBase]: 242/460 cut-off events. [2024-06-21 19:02:49,367 INFO L125 PetriNetUnfolderBase]: For 10589/10593 co-relation queries the response was YES. [2024-06-21 19:02:49,371 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. [2024-06-21 19:02:49,373 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 72 selfloop transitions, 27 changer transitions 0/104 dead transitions. [2024-06-21 19:02:49,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 104 transitions, 1220 flow [2024-06-21 19:02:49,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 19:02:49,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 19:02:49,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 88 transitions. [2024-06-21 19:02:49,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4055299539170507 [2024-06-21 19:02:49,374 INFO L175 Difference]: Start difference. First operand has 116 places, 94 transitions, 958 flow. Second operand 7 states and 88 transitions. [2024-06-21 19:02:49,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 104 transitions, 1220 flow [2024-06-21 19:02:49,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 104 transitions, 1167 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-06-21 19:02:49,390 INFO L231 Difference]: Finished difference. Result has 118 places, 96 transitions, 1011 flow [2024-06-21 19:02:49,391 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} [2024-06-21 19:02:49,391 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 88 predicate places. [2024-06-21 19:02:49,391 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 96 transitions, 1011 flow [2024-06-21 19:02:49,391 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) [2024-06-21 19:02:49,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:02:49,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:02:49,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-21 19:02:49,392 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)] === [2024-06-21 19:02:49,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:02:49,392 INFO L85 PathProgramCache]: Analyzing trace with hash 329078342, now seen corresponding path program 8 times [2024-06-21 19:02:49,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:02:49,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164874137] [2024-06-21 19:02:49,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:02:49,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:02:49,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:02:50,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:02:50,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:02:50,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164874137] [2024-06-21 19:02:50,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164874137] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:02:50,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:02:50,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:02:50,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734433008] [2024-06-21 19:02:50,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:02:50,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:02:50,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:02:50,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:02:50,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:02:50,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:02:50,535 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) [2024-06-21 19:02:50,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:02:50,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:02:50,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:02:50,792 INFO L124 PetriNetUnfolderBase]: 245/465 cut-off events. [2024-06-21 19:02:50,793 INFO L125 PetriNetUnfolderBase]: For 11726/11730 co-relation queries the response was YES. [2024-06-21 19:02:50,794 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. [2024-06-21 19:02:50,812 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 68 selfloop transitions, 32 changer transitions 0/105 dead transitions. [2024-06-21 19:02:50,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 105 transitions, 1275 flow [2024-06-21 19:02:50,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:02:50,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:02:50,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-21 19:02:50,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-21 19:02:50,814 INFO L175 Difference]: Start difference. First operand has 118 places, 96 transitions, 1011 flow. Second operand 8 states and 96 transitions. [2024-06-21 19:02:50,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 105 transitions, 1275 flow [2024-06-21 19:02:50,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 105 transitions, 1186 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-21 19:02:50,825 INFO L231 Difference]: Finished difference. Result has 120 places, 98 transitions, 1042 flow [2024-06-21 19:02:50,825 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} [2024-06-21 19:02:50,825 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 90 predicate places. [2024-06-21 19:02:50,825 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 98 transitions, 1042 flow [2024-06-21 19:02:50,825 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) [2024-06-21 19:02:50,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:02:50,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:02:50,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-21 19:02:50,826 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)] === [2024-06-21 19:02:50,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:02:50,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1542492176, now seen corresponding path program 2 times [2024-06-21 19:02:50,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:02:50,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165341661] [2024-06-21 19:02:50,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:02:50,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:02:50,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:02:51,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:02:51,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:02:51,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165341661] [2024-06-21 19:02:51,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165341661] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:02:51,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:02:51,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:02:51,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29299659] [2024-06-21 19:02:51,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:02:51,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:02:51,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:02:51,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:02:51,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:02:51,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:02:51,761 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) [2024-06-21 19:02:51,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:02:51,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:02:51,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:02:51,959 INFO L124 PetriNetUnfolderBase]: 313/556 cut-off events. [2024-06-21 19:02:51,960 INFO L125 PetriNetUnfolderBase]: For 13691/13691 co-relation queries the response was YES. [2024-06-21 19:02:51,962 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. [2024-06-21 19:02:51,964 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 91 selfloop transitions, 17 changer transitions 0/110 dead transitions. [2024-06-21 19:02:51,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 110 transitions, 1312 flow [2024-06-21 19:02:51,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:02:51,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:02:51,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 83 transitions. [2024-06-21 19:02:51,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3346774193548387 [2024-06-21 19:02:51,974 INFO L175 Difference]: Start difference. First operand has 120 places, 98 transitions, 1042 flow. Second operand 8 states and 83 transitions. [2024-06-21 19:02:51,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 110 transitions, 1312 flow [2024-06-21 19:02:51,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 110 transitions, 1211 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-21 19:02:51,987 INFO L231 Difference]: Finished difference. Result has 123 places, 102 transitions, 1023 flow [2024-06-21 19:02:51,987 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} [2024-06-21 19:02:51,987 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 93 predicate places. [2024-06-21 19:02:51,988 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 102 transitions, 1023 flow [2024-06-21 19:02:51,988 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) [2024-06-21 19:02:51,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:02:51,988 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:02:51,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-21 19:02:51,988 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)] === [2024-06-21 19:02:51,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:02:51,989 INFO L85 PathProgramCache]: Analyzing trace with hash 689568720, now seen corresponding path program 9 times [2024-06-21 19:02:51,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:02:51,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359330165] [2024-06-21 19:02:51,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:02:51,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:02:52,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:02:53,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:02:53,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:02:53,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359330165] [2024-06-21 19:02:53,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359330165] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:02:53,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:02:53,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:02:53,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978703865] [2024-06-21 19:02:53,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:02:53,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:02:53,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:02:53,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:02:53,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:02:53,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:02:53,131 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) [2024-06-21 19:02:53,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:02:53,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:02:53,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:02:53,317 INFO L124 PetriNetUnfolderBase]: 252/477 cut-off events. [2024-06-21 19:02:53,317 INFO L125 PetriNetUnfolderBase]: For 12687/12687 co-relation queries the response was YES. [2024-06-21 19:02:53,318 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. [2024-06-21 19:02:53,321 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 50 selfloop transitions, 54 changer transitions 0/110 dead transitions. [2024-06-21 19:02:53,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 110 transitions, 1295 flow [2024-06-21 19:02:53,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 19:02:53,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 19:02:53,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 88 transitions. [2024-06-21 19:02:53,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4055299539170507 [2024-06-21 19:02:53,323 INFO L175 Difference]: Start difference. First operand has 123 places, 102 transitions, 1023 flow. Second operand 7 states and 88 transitions. [2024-06-21 19:02:53,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 110 transitions, 1295 flow [2024-06-21 19:02:53,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 110 transitions, 1239 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-21 19:02:53,337 INFO L231 Difference]: Finished difference. Result has 125 places, 104 transitions, 1135 flow [2024-06-21 19:02:53,337 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} [2024-06-21 19:02:53,337 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 95 predicate places. [2024-06-21 19:02:53,337 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 104 transitions, 1135 flow [2024-06-21 19:02:53,337 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) [2024-06-21 19:02:53,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:02:53,338 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:02:53,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-21 19:02:53,338 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)] === [2024-06-21 19:02:53,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:02:53,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1741793966, now seen corresponding path program 3 times [2024-06-21 19:02:53,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:02:53,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607565977] [2024-06-21 19:02:53,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:02:53,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:02:53,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:02:54,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:02:54,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:02:54,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607565977] [2024-06-21 19:02:54,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607565977] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:02:54,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:02:54,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:02:54,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799112218] [2024-06-21 19:02:54,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:02:54,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:02:54,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:02:54,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:02:54,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:02:54,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:02:54,255 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) [2024-06-21 19:02:54,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:02:54,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:02:54,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:02:54,411 INFO L124 PetriNetUnfolderBase]: 315/560 cut-off events. [2024-06-21 19:02:54,411 INFO L125 PetriNetUnfolderBase]: For 14784/14784 co-relation queries the response was YES. [2024-06-21 19:02:54,413 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. [2024-06-21 19:02:54,415 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 87 selfloop transitions, 30 changer transitions 0/119 dead transitions. [2024-06-21 19:02:54,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 119 transitions, 1508 flow [2024-06-21 19:02:54,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:02:54,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:02:54,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-21 19:02:54,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-21 19:02:54,416 INFO L175 Difference]: Start difference. First operand has 125 places, 104 transitions, 1135 flow. Second operand 8 states and 88 transitions. [2024-06-21 19:02:54,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 119 transitions, 1508 flow [2024-06-21 19:02:54,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 119 transitions, 1357 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-21 19:02:54,431 INFO L231 Difference]: Finished difference. Result has 130 places, 111 transitions, 1134 flow [2024-06-21 19:02:54,431 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} [2024-06-21 19:02:54,431 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 100 predicate places. [2024-06-21 19:02:54,431 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 111 transitions, 1134 flow [2024-06-21 19:02:54,431 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) [2024-06-21 19:02:54,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:02:54,432 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:02:54,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-21 19:02:54,432 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)] === [2024-06-21 19:02:54,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:02:54,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1749412526, now seen corresponding path program 4 times [2024-06-21 19:02:54,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:02:54,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678305951] [2024-06-21 19:02:54,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:02:54,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:02:54,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:02:55,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:02:55,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:02:55,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678305951] [2024-06-21 19:02:55,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678305951] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:02:55,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:02:55,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:02:55,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324340370] [2024-06-21 19:02:55,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:02:55,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:02:55,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:02:55,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:02:55,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:02:55,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:02:55,317 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) [2024-06-21 19:02:55,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:02:55,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:02:55,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:02:55,505 INFO L124 PetriNetUnfolderBase]: 318/565 cut-off events. [2024-06-21 19:02:55,505 INFO L125 PetriNetUnfolderBase]: For 15283/15283 co-relation queries the response was YES. [2024-06-21 19:02:55,507 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. [2024-06-21 19:02:55,509 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 82 selfloop transitions, 38 changer transitions 0/122 dead transitions. [2024-06-21 19:02:55,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 122 transitions, 1487 flow [2024-06-21 19:02:55,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:02:55,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:02:55,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 86 transitions. [2024-06-21 19:02:55,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3467741935483871 [2024-06-21 19:02:55,521 INFO L175 Difference]: Start difference. First operand has 130 places, 111 transitions, 1134 flow. Second operand 8 states and 86 transitions. [2024-06-21 19:02:55,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 122 transitions, 1487 flow [2024-06-21 19:02:55,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 122 transitions, 1435 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-06-21 19:02:55,537 INFO L231 Difference]: Finished difference. Result has 135 places, 114 transitions, 1202 flow [2024-06-21 19:02:55,537 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} [2024-06-21 19:02:55,538 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 105 predicate places. [2024-06-21 19:02:55,538 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 114 transitions, 1202 flow [2024-06-21 19:02:55,538 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) [2024-06-21 19:02:55,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:02:55,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:02:55,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-21 19:02:55,538 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)] === [2024-06-21 19:02:55,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:02:55,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1749145616, now seen corresponding path program 5 times [2024-06-21 19:02:55,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:02:55,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185931516] [2024-06-21 19:02:55,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:02:55,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:02:55,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:02:56,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:02:56,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:02:56,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185931516] [2024-06-21 19:02:56,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185931516] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:02:56,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:02:56,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:02:56,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500196775] [2024-06-21 19:02:56,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:02:56,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:02:56,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:02:56,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:02:56,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:02:56,532 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:02:56,532 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) [2024-06-21 19:02:56,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:02:56,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:02:56,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:02:56,698 INFO L124 PetriNetUnfolderBase]: 316/562 cut-off events. [2024-06-21 19:02:56,699 INFO L125 PetriNetUnfolderBase]: For 15709/15709 co-relation queries the response was YES. [2024-06-21 19:02:56,700 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. [2024-06-21 19:02:56,702 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 84 selfloop transitions, 35 changer transitions 0/121 dead transitions. [2024-06-21 19:02:56,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 121 transitions, 1456 flow [2024-06-21 19:02:56,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:02:56,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:02:56,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 86 transitions. [2024-06-21 19:02:56,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3467741935483871 [2024-06-21 19:02:56,704 INFO L175 Difference]: Start difference. First operand has 135 places, 114 transitions, 1202 flow. Second operand 8 states and 86 transitions. [2024-06-21 19:02:56,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 121 transitions, 1456 flow [2024-06-21 19:02:56,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 121 transitions, 1385 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-06-21 19:02:56,721 INFO L231 Difference]: Finished difference. Result has 140 places, 114 transitions, 1206 flow [2024-06-21 19:02:56,722 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} [2024-06-21 19:02:56,722 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 110 predicate places. [2024-06-21 19:02:56,722 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 114 transitions, 1206 flow [2024-06-21 19:02:56,722 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) [2024-06-21 19:02:56,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:02:56,722 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:02:56,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-21 19:02:56,723 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)] === [2024-06-21 19:02:56,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:02:56,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1749422446, now seen corresponding path program 1 times [2024-06-21 19:02:56,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:02:56,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847956401] [2024-06-21 19:02:56,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:02:56,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:02:56,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:02:57,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:02:57,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:02:57,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847956401] [2024-06-21 19:02:57,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847956401] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:02:57,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:02:57,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:02:57,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967853126] [2024-06-21 19:02:57,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:02:57,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:02:57,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:02:57,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:02:57,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:02:58,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:02:58,021 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) [2024-06-21 19:02:58,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:02:58,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:02:58,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:02:58,405 INFO L124 PetriNetUnfolderBase]: 314/560 cut-off events. [2024-06-21 19:02:58,406 INFO L125 PetriNetUnfolderBase]: For 16232/16232 co-relation queries the response was YES. [2024-06-21 19:02:58,408 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. [2024-06-21 19:02:58,409 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 106 selfloop transitions, 16 changer transitions 0/124 dead transitions. [2024-06-21 19:02:58,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 124 transitions, 1480 flow [2024-06-21 19:02:58,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:02:58,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:02:58,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 93 transitions. [2024-06-21 19:02:58,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3 [2024-06-21 19:02:58,411 INFO L175 Difference]: Start difference. First operand has 140 places, 114 transitions, 1206 flow. Second operand 10 states and 93 transitions. [2024-06-21 19:02:58,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 124 transitions, 1480 flow [2024-06-21 19:02:58,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 124 transitions, 1399 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-21 19:02:58,430 INFO L231 Difference]: Finished difference. Result has 143 places, 116 transitions, 1178 flow [2024-06-21 19:02:58,430 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} [2024-06-21 19:02:58,430 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 113 predicate places. [2024-06-21 19:02:58,430 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 116 transitions, 1178 flow [2024-06-21 19:02:58,430 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) [2024-06-21 19:02:58,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:02:58,431 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:02:58,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-21 19:02:58,431 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)] === [2024-06-21 19:02:58,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:02:58,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1099085290, now seen corresponding path program 1 times [2024-06-21 19:02:58,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:02:58,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148344005] [2024-06-21 19:02:58,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:02:58,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:02:58,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:02:59,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:02:59,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:02:59,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148344005] [2024-06-21 19:02:59,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148344005] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:02:59,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:02:59,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:02:59,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219965442] [2024-06-21 19:02:59,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:02:59,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:02:59,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:02:59,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:02:59,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:02:59,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-21 19:02:59,255 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) [2024-06-21 19:02:59,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:02:59,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-21 19:02:59,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:02:59,417 INFO L124 PetriNetUnfolderBase]: 224/469 cut-off events. [2024-06-21 19:02:59,417 INFO L125 PetriNetUnfolderBase]: For 16158/16162 co-relation queries the response was YES. [2024-06-21 19:02:59,419 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. [2024-06-21 19:02:59,420 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 57 selfloop transitions, 30 changer transitions 0/128 dead transitions. [2024-06-21 19:02:59,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 128 transitions, 1414 flow [2024-06-21 19:02:59,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 19:02:59,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 19:02:59,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 89 transitions. [2024-06-21 19:02:59,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.478494623655914 [2024-06-21 19:02:59,421 INFO L175 Difference]: Start difference. First operand has 143 places, 116 transitions, 1178 flow. Second operand 6 states and 89 transitions. [2024-06-21 19:02:59,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 128 transitions, 1414 flow [2024-06-21 19:02:59,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 128 transitions, 1365 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-21 19:02:59,440 INFO L231 Difference]: Finished difference. Result has 139 places, 118 transitions, 1245 flow [2024-06-21 19:02:59,440 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} [2024-06-21 19:02:59,441 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 109 predicate places. [2024-06-21 19:02:59,441 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 118 transitions, 1245 flow [2024-06-21 19:02:59,441 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) [2024-06-21 19:02:59,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:02:59,441 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:02:59,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-21 19:02:59,441 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)] === [2024-06-21 19:02:59,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:02:59,442 INFO L85 PathProgramCache]: Analyzing trace with hash 554461660, now seen corresponding path program 2 times [2024-06-21 19:02:59,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:02:59,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788780952] [2024-06-21 19:02:59,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:02:59,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:02:59,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:03:00,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:03:00,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:03:00,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788780952] [2024-06-21 19:03:00,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788780952] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:03:00,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:03:00,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:03:00,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736378563] [2024-06-21 19:03:00,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:03:00,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:03:00,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:03:00,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:03:00,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:03:00,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:03:00,383 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) [2024-06-21 19:03:00,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:03:00,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:03:00,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:03:00,641 INFO L124 PetriNetUnfolderBase]: 284/543 cut-off events. [2024-06-21 19:03:00,641 INFO L125 PetriNetUnfolderBase]: For 20178/20187 co-relation queries the response was YES. [2024-06-21 19:03:00,643 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. [2024-06-21 19:03:00,644 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 103 selfloop transitions, 28 changer transitions 0/138 dead transitions. [2024-06-21 19:03:00,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 138 transitions, 1597 flow [2024-06-21 19:03:00,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:03:00,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:03:00,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-21 19:03:00,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-21 19:03:00,646 INFO L175 Difference]: Start difference. First operand has 139 places, 118 transitions, 1245 flow. Second operand 9 states and 108 transitions. [2024-06-21 19:03:00,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 138 transitions, 1597 flow [2024-06-21 19:03:00,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 138 transitions, 1552 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-21 19:03:00,665 INFO L231 Difference]: Finished difference. Result has 146 places, 120 transitions, 1308 flow [2024-06-21 19:03:00,666 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} [2024-06-21 19:03:00,666 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 116 predicate places. [2024-06-21 19:03:00,666 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 120 transitions, 1308 flow [2024-06-21 19:03:00,666 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) [2024-06-21 19:03:00,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:03:00,666 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:03:00,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-21 19:03:00,667 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)] === [2024-06-21 19:03:00,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:03:00,667 INFO L85 PathProgramCache]: Analyzing trace with hash 700459570, now seen corresponding path program 3 times [2024-06-21 19:03:00,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:03:00,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225509508] [2024-06-21 19:03:00,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:03:00,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:03:00,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:03:01,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:03:01,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:03:01,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225509508] [2024-06-21 19:03:01,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225509508] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:03:01,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:03:01,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:03:01,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465081201] [2024-06-21 19:03:01,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:03:01,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:03:01,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:03:01,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:03:01,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:03:01,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:03:01,759 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) [2024-06-21 19:03:01,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:03:01,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:03:01,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:03:01,996 INFO L124 PetriNetUnfolderBase]: 288/553 cut-off events. [2024-06-21 19:03:01,996 INFO L125 PetriNetUnfolderBase]: For 22121/22127 co-relation queries the response was YES. [2024-06-21 19:03:01,998 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. [2024-06-21 19:03:01,999 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 99 selfloop transitions, 31 changer transitions 0/137 dead transitions. [2024-06-21 19:03:02,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 137 transitions, 1648 flow [2024-06-21 19:03:02,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:03:02,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:03:02,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-21 19:03:02,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-21 19:03:02,013 INFO L175 Difference]: Start difference. First operand has 146 places, 120 transitions, 1308 flow. Second operand 9 states and 108 transitions. [2024-06-21 19:03:02,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 137 transitions, 1648 flow [2024-06-21 19:03:02,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 137 transitions, 1562 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-21 19:03:02,038 INFO L231 Difference]: Finished difference. Result has 149 places, 121 transitions, 1328 flow [2024-06-21 19:03:02,038 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} [2024-06-21 19:03:02,039 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 119 predicate places. [2024-06-21 19:03:02,039 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 121 transitions, 1328 flow [2024-06-21 19:03:02,039 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) [2024-06-21 19:03:02,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:03:02,040 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:03:02,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-21 19:03:02,040 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)] === [2024-06-21 19:03:02,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:03:02,040 INFO L85 PathProgramCache]: Analyzing trace with hash 787151380, now seen corresponding path program 4 times [2024-06-21 19:03:02,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:03:02,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863634948] [2024-06-21 19:03:02,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:03:02,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:03:02,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:03:03,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:03:03,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:03:03,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863634948] [2024-06-21 19:03:03,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863634948] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:03:03,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:03:03,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:03:03,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084675988] [2024-06-21 19:03:03,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:03:03,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:03:03,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:03:03,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:03:03,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:03:03,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:03:03,206 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) [2024-06-21 19:03:03,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:03:03,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:03:03,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:03:03,429 INFO L124 PetriNetUnfolderBase]: 285/553 cut-off events. [2024-06-21 19:03:03,429 INFO L125 PetriNetUnfolderBase]: For 21680/21680 co-relation queries the response was YES. [2024-06-21 19:03:03,431 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. [2024-06-21 19:03:03,433 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 99 selfloop transitions, 30 changer transitions 0/136 dead transitions. [2024-06-21 19:03:03,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 136 transitions, 1662 flow [2024-06-21 19:03:03,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:03:03,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:03:03,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 98 transitions. [2024-06-21 19:03:03,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3951612903225806 [2024-06-21 19:03:03,434 INFO L175 Difference]: Start difference. First operand has 149 places, 121 transitions, 1328 flow. Second operand 8 states and 98 transitions. [2024-06-21 19:03:03,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 136 transitions, 1662 flow [2024-06-21 19:03:03,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 136 transitions, 1566 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-21 19:03:03,458 INFO L231 Difference]: Finished difference. Result has 150 places, 122 transitions, 1338 flow [2024-06-21 19:03:03,458 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} [2024-06-21 19:03:03,458 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 120 predicate places. [2024-06-21 19:03:03,459 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 122 transitions, 1338 flow [2024-06-21 19:03:03,459 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) [2024-06-21 19:03:03,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:03:03,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:03:03,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-21 19:03:03,459 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)] === [2024-06-21 19:03:03,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:03:03,460 INFO L85 PathProgramCache]: Analyzing trace with hash 787310720, now seen corresponding path program 1 times [2024-06-21 19:03:03,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:03:03,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526520428] [2024-06-21 19:03:03,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:03:03,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:03:03,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:03:04,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:03:04,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:03:04,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526520428] [2024-06-21 19:03:04,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526520428] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:03:04,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:03:04,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:03:04,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851788040] [2024-06-21 19:03:04,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:03:04,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:03:04,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:03:04,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:03:04,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:03:04,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:03:04,320 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) [2024-06-21 19:03:04,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:03:04,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:03:04,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:03:04,525 INFO L124 PetriNetUnfolderBase]: 359/649 cut-off events. [2024-06-21 19:03:04,525 INFO L125 PetriNetUnfolderBase]: For 22749/22749 co-relation queries the response was YES. [2024-06-21 19:03:04,527 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. [2024-06-21 19:03:04,529 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 106 selfloop transitions, 32 changer transitions 0/140 dead transitions. [2024-06-21 19:03:04,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 140 transitions, 1698 flow [2024-06-21 19:03:04,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:03:04,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:03:04,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-21 19:03:04,530 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35125448028673834 [2024-06-21 19:03:04,530 INFO L175 Difference]: Start difference. First operand has 150 places, 122 transitions, 1338 flow. Second operand 9 states and 98 transitions. [2024-06-21 19:03:04,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 140 transitions, 1698 flow [2024-06-21 19:03:04,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 140 transitions, 1605 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-21 19:03:04,557 INFO L231 Difference]: Finished difference. Result has 155 places, 126 transitions, 1371 flow [2024-06-21 19:03:04,558 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} [2024-06-21 19:03:04,558 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 125 predicate places. [2024-06-21 19:03:04,558 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 126 transitions, 1371 flow [2024-06-21 19:03:04,558 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) [2024-06-21 19:03:04,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:03:04,558 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:03:04,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-21 19:03:04,559 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)] === [2024-06-21 19:03:04,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:03:04,559 INFO L85 PathProgramCache]: Analyzing trace with hash -103263656, now seen corresponding path program 5 times [2024-06-21 19:03:04,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:03:04,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628426392] [2024-06-21 19:03:04,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:03:04,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:03:04,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:03:05,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:03:05,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:03:05,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628426392] [2024-06-21 19:03:05,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628426392] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:03:05,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:03:05,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:03:05,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37110199] [2024-06-21 19:03:05,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:03:05,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:03:05,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:03:05,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:03:05,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:03:05,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:03:05,514 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) [2024-06-21 19:03:05,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:03:05,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:03:05,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:03:05,805 INFO L124 PetriNetUnfolderBase]: 306/593 cut-off events. [2024-06-21 19:03:05,805 INFO L125 PetriNetUnfolderBase]: For 25297/25309 co-relation queries the response was YES. [2024-06-21 19:03:05,807 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. [2024-06-21 19:03:05,809 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 111 selfloop transitions, 24 changer transitions 0/143 dead transitions. [2024-06-21 19:03:05,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 143 transitions, 1730 flow [2024-06-21 19:03:05,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:03:05,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:03:05,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 100 transitions. [2024-06-21 19:03:05,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-21 19:03:05,810 INFO L175 Difference]: Start difference. First operand has 155 places, 126 transitions, 1371 flow. Second operand 8 states and 100 transitions. [2024-06-21 19:03:05,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 143 transitions, 1730 flow [2024-06-21 19:03:05,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 143 transitions, 1643 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-21 19:03:05,838 INFO L231 Difference]: Finished difference. Result has 158 places, 128 transitions, 1391 flow [2024-06-21 19:03:05,838 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} [2024-06-21 19:03:05,838 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 128 predicate places. [2024-06-21 19:03:05,839 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 128 transitions, 1391 flow [2024-06-21 19:03:05,839 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) [2024-06-21 19:03:05,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:03:05,839 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:03:05,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-21 19:03:05,839 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)] === [2024-06-21 19:03:05,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:03:05,840 INFO L85 PathProgramCache]: Analyzing trace with hash 617737820, now seen corresponding path program 6 times [2024-06-21 19:03:05,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:03:05,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698437493] [2024-06-21 19:03:05,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:03:05,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:03:05,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:03:06,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:03:06,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:03:06,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698437493] [2024-06-21 19:03:06,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698437493] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:03:06,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:03:06,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:03:06,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789525973] [2024-06-21 19:03:06,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:03:06,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:03:06,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:03:06,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:03:06,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:03:06,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:03:06,889 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) [2024-06-21 19:03:06,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:03:06,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:03:06,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:03:07,171 INFO L124 PetriNetUnfolderBase]: 313/608 cut-off events. [2024-06-21 19:03:07,171 INFO L125 PetriNetUnfolderBase]: For 27741/27753 co-relation queries the response was YES. [2024-06-21 19:03:07,174 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. [2024-06-21 19:03:07,177 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 106 selfloop transitions, 28 changer transitions 0/142 dead transitions. [2024-06-21 19:03:07,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 142 transitions, 1737 flow [2024-06-21 19:03:07,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:03:07,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:03:07,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-21 19:03:07,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37992831541218636 [2024-06-21 19:03:07,178 INFO L175 Difference]: Start difference. First operand has 158 places, 128 transitions, 1391 flow. Second operand 9 states and 106 transitions. [2024-06-21 19:03:07,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 142 transitions, 1737 flow [2024-06-21 19:03:07,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 142 transitions, 1651 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-21 19:03:07,228 INFO L231 Difference]: Finished difference. Result has 162 places, 129 transitions, 1411 flow [2024-06-21 19:03:07,228 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} [2024-06-21 19:03:07,228 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 132 predicate places. [2024-06-21 19:03:07,228 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 129 transitions, 1411 flow [2024-06-21 19:03:07,228 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) [2024-06-21 19:03:07,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:03:07,229 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:03:07,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-21 19:03:07,229 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)] === [2024-06-21 19:03:07,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:03:07,230 INFO L85 PathProgramCache]: Analyzing trace with hash 620534330, now seen corresponding path program 7 times [2024-06-21 19:03:07,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:03:07,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415699462] [2024-06-21 19:03:07,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:03:07,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:03:07,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:03:08,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:03:08,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:03:08,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415699462] [2024-06-21 19:03:08,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415699462] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:03:08,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:03:08,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:03:08,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110120672] [2024-06-21 19:03:08,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:03:08,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:03:08,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:03:08,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:03:08,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:03:08,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:03:08,381 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) [2024-06-21 19:03:08,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:03:08,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:03:08,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:03:08,696 INFO L124 PetriNetUnfolderBase]: 317/616 cut-off events. [2024-06-21 19:03:08,697 INFO L125 PetriNetUnfolderBase]: For 29272/29284 co-relation queries the response was YES. [2024-06-21 19:03:08,699 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. [2024-06-21 19:03:08,702 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 108 selfloop transitions, 27 changer transitions 0/143 dead transitions. [2024-06-21 19:03:08,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 143 transitions, 1761 flow [2024-06-21 19:03:08,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:03:08,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:03:08,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 99 transitions. [2024-06-21 19:03:08,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39919354838709675 [2024-06-21 19:03:08,706 INFO L175 Difference]: Start difference. First operand has 162 places, 129 transitions, 1411 flow. Second operand 8 states and 99 transitions. [2024-06-21 19:03:08,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 143 transitions, 1761 flow [2024-06-21 19:03:08,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 143 transitions, 1671 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-21 19:03:08,742 INFO L231 Difference]: Finished difference. Result has 164 places, 130 transitions, 1427 flow [2024-06-21 19:03:08,743 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} [2024-06-21 19:03:08,745 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 134 predicate places. [2024-06-21 19:03:08,745 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 130 transitions, 1427 flow [2024-06-21 19:03:08,745 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) [2024-06-21 19:03:08,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:03:08,745 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:03:08,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-21 19:03:08,745 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)] === [2024-06-21 19:03:08,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:03:08,746 INFO L85 PathProgramCache]: Analyzing trace with hash 620539290, now seen corresponding path program 2 times [2024-06-21 19:03:08,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:03:08,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275352104] [2024-06-21 19:03:08,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:03:08,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:03:08,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:03:09,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:03:09,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:03:09,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275352104] [2024-06-21 19:03:09,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275352104] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:03:09,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:03:09,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:03:09,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968023623] [2024-06-21 19:03:09,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:03:09,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:03:09,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:03:09,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:03:09,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:03:09,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:03:09,732 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) [2024-06-21 19:03:09,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:03:09,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:03:09,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:03:10,056 INFO L124 PetriNetUnfolderBase]: 391/712 cut-off events. [2024-06-21 19:03:10,056 INFO L125 PetriNetUnfolderBase]: For 28349/28349 co-relation queries the response was YES. [2024-06-21 19:03:10,059 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. [2024-06-21 19:03:10,073 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 115 selfloop transitions, 30 changer transitions 0/147 dead transitions. [2024-06-21 19:03:10,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 147 transitions, 1803 flow [2024-06-21 19:03:10,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:03:10,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:03:10,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-21 19:03:10,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33548387096774196 [2024-06-21 19:03:10,075 INFO L175 Difference]: Start difference. First operand has 164 places, 130 transitions, 1427 flow. Second operand 10 states and 104 transitions. [2024-06-21 19:03:10,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 147 transitions, 1803 flow [2024-06-21 19:03:10,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 147 transitions, 1704 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-21 19:03:10,136 INFO L231 Difference]: Finished difference. Result has 169 places, 134 transitions, 1454 flow [2024-06-21 19:03:10,137 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} [2024-06-21 19:03:10,137 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 139 predicate places. [2024-06-21 19:03:10,137 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 134 transitions, 1454 flow [2024-06-21 19:03:10,137 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) [2024-06-21 19:03:10,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:03:10,137 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:03:10,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-21 19:03:10,138 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)] === [2024-06-21 19:03:10,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:03:10,138 INFO L85 PathProgramCache]: Analyzing trace with hash -983112852, now seen corresponding path program 8 times [2024-06-21 19:03:10,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:03:10,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766363169] [2024-06-21 19:03:10,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:03:10,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:03:10,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:03:11,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:03:11,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:03:11,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766363169] [2024-06-21 19:03:11,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766363169] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:03:11,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:03:11,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:03:11,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381458037] [2024-06-21 19:03:11,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:03:11,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:03:11,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:03:11,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:03:11,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:03:11,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:03:11,372 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) [2024-06-21 19:03:11,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:03:11,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:03:11,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:03:11,614 INFO L124 PetriNetUnfolderBase]: 322/631 cut-off events. [2024-06-21 19:03:11,614 INFO L125 PetriNetUnfolderBase]: For 28793/28797 co-relation queries the response was YES. [2024-06-21 19:03:11,617 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. [2024-06-21 19:03:11,618 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 98 selfloop transitions, 40 changer transitions 0/147 dead transitions. [2024-06-21 19:03:11,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 147 transitions, 1808 flow [2024-06-21 19:03:11,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:03:11,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:03:11,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 100 transitions. [2024-06-21 19:03:11,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-21 19:03:11,620 INFO L175 Difference]: Start difference. First operand has 169 places, 134 transitions, 1454 flow. Second operand 8 states and 100 transitions. [2024-06-21 19:03:11,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 147 transitions, 1808 flow [2024-06-21 19:03:11,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 147 transitions, 1719 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-21 19:03:11,655 INFO L231 Difference]: Finished difference. Result has 170 places, 135 transitions, 1499 flow [2024-06-21 19:03:11,655 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} [2024-06-21 19:03:11,656 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 140 predicate places. [2024-06-21 19:03:11,656 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 135 transitions, 1499 flow [2024-06-21 19:03:11,656 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) [2024-06-21 19:03:11,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:03:11,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:03:11,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-21 19:03:11,657 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)] === [2024-06-21 19:03:11,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:03:11,657 INFO L85 PathProgramCache]: Analyzing trace with hash 735830460, now seen corresponding path program 3 times [2024-06-21 19:03:11,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:03:11,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033795156] [2024-06-21 19:03:11,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:03:11,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:03:11,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:03:12,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:03:12,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:03:12,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033795156] [2024-06-21 19:03:12,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033795156] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:03:12,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:03:12,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:03:12,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842832122] [2024-06-21 19:03:12,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:03:12,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:03:12,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:03:12,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:03:12,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:03:12,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:03:12,601 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) [2024-06-21 19:03:12,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:03:12,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:03:12,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:03:12,807 INFO L124 PetriNetUnfolderBase]: 415/754 cut-off events. [2024-06-21 19:03:12,807 INFO L125 PetriNetUnfolderBase]: For 33134/33134 co-relation queries the response was YES. [2024-06-21 19:03:12,810 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. [2024-06-21 19:03:12,812 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 111 selfloop transitions, 46 changer transitions 0/159 dead transitions. [2024-06-21 19:03:12,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 159 transitions, 2159 flow [2024-06-21 19:03:12,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:03:12,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:03:12,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-21 19:03:12,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37992831541218636 [2024-06-21 19:03:12,814 INFO L175 Difference]: Start difference. First operand has 170 places, 135 transitions, 1499 flow. Second operand 9 states and 106 transitions. [2024-06-21 19:03:12,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 159 transitions, 2159 flow [2024-06-21 19:03:12,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 159 transitions, 2033 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-21 19:03:12,852 INFO L231 Difference]: Finished difference. Result has 176 places, 144 transitions, 1647 flow [2024-06-21 19:03:12,852 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} [2024-06-21 19:03:12,853 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 146 predicate places. [2024-06-21 19:03:12,853 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 144 transitions, 1647 flow [2024-06-21 19:03:12,853 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) [2024-06-21 19:03:12,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:03:12,853 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:03:12,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-21 19:03:12,855 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)] === [2024-06-21 19:03:12,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:03:12,856 INFO L85 PathProgramCache]: Analyzing trace with hash 736003440, now seen corresponding path program 4 times [2024-06-21 19:03:12,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:03:12,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754900342] [2024-06-21 19:03:12,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:03:12,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:03:12,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:03:13,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:03:13,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:03:13,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754900342] [2024-06-21 19:03:13,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754900342] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:03:13,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:03:13,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:03:13,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734048390] [2024-06-21 19:03:13,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:03:13,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:03:13,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:03:13,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:03:13,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:03:13,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:03:13,767 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) [2024-06-21 19:03:13,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:03:13,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:03:13,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:03:14,027 INFO L124 PetriNetUnfolderBase]: 418/759 cut-off events. [2024-06-21 19:03:14,027 INFO L125 PetriNetUnfolderBase]: For 34379/34379 co-relation queries the response was YES. [2024-06-21 19:03:14,031 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. [2024-06-21 19:03:14,033 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 108 selfloop transitions, 55 changer transitions 0/165 dead transitions. [2024-06-21 19:03:14,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 165 transitions, 2279 flow [2024-06-21 19:03:14,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:03:14,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:03:14,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-21 19:03:14,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37992831541218636 [2024-06-21 19:03:14,034 INFO L175 Difference]: Start difference. First operand has 176 places, 144 transitions, 1647 flow. Second operand 9 states and 106 transitions. [2024-06-21 19:03:14,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 165 transitions, 2279 flow [2024-06-21 19:03:14,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 165 transitions, 2183 flow, removed 26 selfloop flow, removed 4 redundant places. [2024-06-21 19:03:14,086 INFO L231 Difference]: Finished difference. Result has 182 places, 151 transitions, 1789 flow [2024-06-21 19:03:14,086 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} [2024-06-21 19:03:14,086 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 152 predicate places. [2024-06-21 19:03:14,087 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 151 transitions, 1789 flow [2024-06-21 19:03:14,087 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) [2024-06-21 19:03:14,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:03:14,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:03:14,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-21 19:03:14,087 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)] === [2024-06-21 19:03:14,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:03:14,088 INFO L85 PathProgramCache]: Analyzing trace with hash 736010198, now seen corresponding path program 1 times [2024-06-21 19:03:14,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:03:14,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504851254] [2024-06-21 19:03:14,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:03:14,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:03:14,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:03:14,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:03:14,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:03:14,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504851254] [2024-06-21 19:03:14,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504851254] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:03:14,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:03:14,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:03:14,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311468649] [2024-06-21 19:03:14,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:03:14,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:03:14,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:03:14,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:03:14,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:03:15,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:03:15,011 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) [2024-06-21 19:03:15,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:03:15,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:03:15,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:03:15,177 INFO L124 PetriNetUnfolderBase]: 421/766 cut-off events. [2024-06-21 19:03:15,177 INFO L125 PetriNetUnfolderBase]: For 36213/36213 co-relation queries the response was YES. [2024-06-21 19:03:15,181 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. [2024-06-21 19:03:15,183 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 138 selfloop transitions, 23 changer transitions 0/163 dead transitions. [2024-06-21 19:03:15,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 163 transitions, 2155 flow [2024-06-21 19:03:15,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:03:15,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:03:15,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2024-06-21 19:03:15,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-21 19:03:15,184 INFO L175 Difference]: Start difference. First operand has 182 places, 151 transitions, 1789 flow. Second operand 8 states and 93 transitions. [2024-06-21 19:03:15,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 163 transitions, 2155 flow [2024-06-21 19:03:15,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 163 transitions, 2052 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-21 19:03:15,237 INFO L231 Difference]: Finished difference. Result has 185 places, 153 transitions, 1762 flow [2024-06-21 19:03:15,237 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} [2024-06-21 19:03:15,237 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 155 predicate places. [2024-06-21 19:03:15,237 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 153 transitions, 1762 flow [2024-06-21 19:03:15,237 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) [2024-06-21 19:03:15,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:03:15,238 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:03:15,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-21 19:03:15,238 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)] === [2024-06-21 19:03:15,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:03:15,238 INFO L85 PathProgramCache]: Analyzing trace with hash -982928402, now seen corresponding path program 5 times [2024-06-21 19:03:15,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:03:15,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106031684] [2024-06-21 19:03:15,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:03:15,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:03:15,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:03:16,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:03:16,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:03:16,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106031684] [2024-06-21 19:03:16,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106031684] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:03:16,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:03:16,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:03:16,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487434074] [2024-06-21 19:03:16,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:03:16,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:03:16,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:03:16,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:03:16,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:03:16,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:03:16,112 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) [2024-06-21 19:03:16,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:03:16,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:03:16,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:03:16,348 INFO L124 PetriNetUnfolderBase]: 419/761 cut-off events. [2024-06-21 19:03:16,348 INFO L125 PetriNetUnfolderBase]: For 34793/34793 co-relation queries the response was YES. [2024-06-21 19:03:16,352 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. [2024-06-21 19:03:16,354 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 103 selfloop transitions, 61 changer transitions 0/166 dead transitions. [2024-06-21 19:03:16,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 166 transitions, 2210 flow [2024-06-21 19:03:16,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:03:16,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:03:16,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-21 19:03:16,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2024-06-21 19:03:16,357 INFO L175 Difference]: Start difference. First operand has 185 places, 153 transitions, 1762 flow. Second operand 9 states and 105 transitions. [2024-06-21 19:03:16,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 166 transitions, 2210 flow [2024-06-21 19:03:16,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 166 transitions, 2130 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-21 19:03:16,418 INFO L231 Difference]: Finished difference. Result has 188 places, 153 transitions, 1809 flow [2024-06-21 19:03:16,420 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} [2024-06-21 19:03:16,422 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 158 predicate places. [2024-06-21 19:03:16,422 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 153 transitions, 1809 flow [2024-06-21 19:03:16,423 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) [2024-06-21 19:03:16,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:03:16,423 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:03:16,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-21 19:03:16,423 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)] === [2024-06-21 19:03:16,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:03:16,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1493347194, now seen corresponding path program 9 times [2024-06-21 19:03:16,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:03:16,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261351147] [2024-06-21 19:03:16,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:03:16,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:03:16,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:03:17,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:03:17,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:03:17,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261351147] [2024-06-21 19:03:17,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261351147] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:03:17,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:03:17,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:03:17,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987960924] [2024-06-21 19:03:17,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:03:17,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:03:17,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:03:17,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:03:17,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:03:17,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:03:17,494 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) [2024-06-21 19:03:17,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:03:17,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:03:17,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:03:17,770 INFO L124 PetriNetUnfolderBase]: 361/699 cut-off events. [2024-06-21 19:03:17,770 INFO L125 PetriNetUnfolderBase]: For 39535/39543 co-relation queries the response was YES. [2024-06-21 19:03:17,773 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. [2024-06-21 19:03:17,775 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 130 selfloop transitions, 25 changer transitions 0/166 dead transitions. [2024-06-21 19:03:17,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 166 transitions, 2201 flow [2024-06-21 19:03:17,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:03:17,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:03:17,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-21 19:03:17,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36917562724014336 [2024-06-21 19:03:17,777 INFO L175 Difference]: Start difference. First operand has 188 places, 153 transitions, 1809 flow. Second operand 9 states and 103 transitions. [2024-06-21 19:03:17,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 166 transitions, 2201 flow [2024-06-21 19:03:17,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 166 transitions, 2118 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-21 19:03:17,840 INFO L231 Difference]: Finished difference. Result has 192 places, 154 transitions, 1832 flow [2024-06-21 19:03:17,840 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} [2024-06-21 19:03:17,840 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 162 predicate places. [2024-06-21 19:03:17,841 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 154 transitions, 1832 flow [2024-06-21 19:03:17,841 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) [2024-06-21 19:03:17,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:03:17,841 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:03:17,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-21 19:03:17,841 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)] === [2024-06-21 19:03:17,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:03:17,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1493407644, now seen corresponding path program 10 times [2024-06-21 19:03:17,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:03:17,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988070153] [2024-06-21 19:03:17,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:03:17,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:03:17,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:03:18,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:03:18,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:03:18,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988070153] [2024-06-21 19:03:18,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988070153] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:03:18,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:03:18,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:03:18,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662573173] [2024-06-21 19:03:18,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:03:18,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:03:18,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:03:18,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:03:18,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:03:18,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:03:18,903 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) [2024-06-21 19:03:18,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:03:18,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:03:18,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:03:19,190 INFO L124 PetriNetUnfolderBase]: 365/707 cut-off events. [2024-06-21 19:03:19,191 INFO L125 PetriNetUnfolderBase]: For 42580/42588 co-relation queries the response was YES. [2024-06-21 19:03:19,194 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. [2024-06-21 19:03:19,197 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 126 selfloop transitions, 28 changer transitions 0/165 dead transitions. [2024-06-21 19:03:19,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 165 transitions, 2218 flow [2024-06-21 19:03:19,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:03:19,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:03:19,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-21 19:03:19,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3911290322580645 [2024-06-21 19:03:19,198 INFO L175 Difference]: Start difference. First operand has 192 places, 154 transitions, 1832 flow. Second operand 8 states and 97 transitions. [2024-06-21 19:03:19,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 165 transitions, 2218 flow [2024-06-21 19:03:19,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 165 transitions, 2114 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-21 19:03:19,267 INFO L231 Difference]: Finished difference. Result has 192 places, 155 transitions, 1842 flow [2024-06-21 19:03:19,267 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} [2024-06-21 19:03:19,267 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 162 predicate places. [2024-06-21 19:03:19,267 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 155 transitions, 1842 flow [2024-06-21 19:03:19,267 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) [2024-06-21 19:03:19,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:03:19,268 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:03:19,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-21 19:03:19,268 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)] === [2024-06-21 19:03:19,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:03:19,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1579008044, now seen corresponding path program 11 times [2024-06-21 19:03:19,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:03:19,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432753307] [2024-06-21 19:03:19,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:03:19,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:03:19,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:03:20,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:03:20,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:03:20,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432753307] [2024-06-21 19:03:20,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432753307] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:03:20,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:03:20,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:03:20,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211113453] [2024-06-21 19:03:20,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:03:20,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:03:20,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:03:20,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:03:20,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:03:20,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:03:20,484 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) [2024-06-21 19:03:20,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:03:20,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:03:20,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:03:20,796 INFO L124 PetriNetUnfolderBase]: 363/709 cut-off events. [2024-06-21 19:03:20,797 INFO L125 PetriNetUnfolderBase]: For 42983/42991 co-relation queries the response was YES. [2024-06-21 19:03:20,800 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. [2024-06-21 19:03:20,802 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 127 selfloop transitions, 28 changer transitions 0/166 dead transitions. [2024-06-21 19:03:20,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 166 transitions, 2232 flow [2024-06-21 19:03:20,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:03:20,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:03:20,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-21 19:03:20,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36917562724014336 [2024-06-21 19:03:20,803 INFO L175 Difference]: Start difference. First operand has 192 places, 155 transitions, 1842 flow. Second operand 9 states and 103 transitions. [2024-06-21 19:03:20,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 166 transitions, 2232 flow [2024-06-21 19:03:20,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 166 transitions, 2128 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-21 19:03:20,870 INFO L231 Difference]: Finished difference. Result has 195 places, 156 transitions, 1854 flow [2024-06-21 19:03:20,870 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} [2024-06-21 19:03:20,871 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 165 predicate places. [2024-06-21 19:03:20,871 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 156 transitions, 1854 flow [2024-06-21 19:03:20,871 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) [2024-06-21 19:03:20,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:03:20,871 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:03:20,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-21 19:03:20,872 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)] === [2024-06-21 19:03:20,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:03:20,872 INFO L85 PathProgramCache]: Analyzing trace with hash -379130190, now seen corresponding path program 6 times [2024-06-21 19:03:20,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:03:20,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565232066] [2024-06-21 19:03:20,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:03:20,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:03:20,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:03:21,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:03:21,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:03:21,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565232066] [2024-06-21 19:03:21,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565232066] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:03:21,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:03:21,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:03:21,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45678496] [2024-06-21 19:03:21,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:03:21,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:03:21,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:03:21,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:03:21,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:03:21,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:03:21,732 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) [2024-06-21 19:03:21,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:03:21,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:03:21,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:03:21,953 INFO L124 PetriNetUnfolderBase]: 446/814 cut-off events. [2024-06-21 19:03:21,953 INFO L125 PetriNetUnfolderBase]: For 42544/42544 co-relation queries the response was YES. [2024-06-21 19:03:21,957 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. [2024-06-21 19:03:21,959 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 138 selfloop transitions, 30 changer transitions 0/170 dead transitions. [2024-06-21 19:03:21,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 170 transitions, 2270 flow [2024-06-21 19:03:21,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:03:21,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:03:21,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-21 19:03:21,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34767025089605735 [2024-06-21 19:03:21,960 INFO L175 Difference]: Start difference. First operand has 195 places, 156 transitions, 1854 flow. Second operand 9 states and 97 transitions. [2024-06-21 19:03:21,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 170 transitions, 2270 flow [2024-06-21 19:03:22,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 170 transitions, 2167 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-21 19:03:22,030 INFO L231 Difference]: Finished difference. Result has 199 places, 160 transitions, 1879 flow [2024-06-21 19:03:22,030 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} [2024-06-21 19:03:22,030 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 169 predicate places. [2024-06-21 19:03:22,031 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 160 transitions, 1879 flow [2024-06-21 19:03:22,031 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) [2024-06-21 19:03:22,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:03:22,031 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:03:22,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-21 19:03:22,031 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)] === [2024-06-21 19:03:22,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:03:22,031 INFO L85 PathProgramCache]: Analyzing trace with hash -263666040, now seen corresponding path program 7 times [2024-06-21 19:03:22,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:03:22,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861662472] [2024-06-21 19:03:22,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:03:22,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:03:22,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:03:22,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:03:22,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:03:22,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861662472] [2024-06-21 19:03:22,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861662472] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:03:22,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:03:22,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:03:22,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762118306] [2024-06-21 19:03:22,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:03:22,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:03:22,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:03:22,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:03:22,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:03:22,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:03:22,917 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) [2024-06-21 19:03:22,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:03:22,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:03:22,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:03:23,143 INFO L124 PetriNetUnfolderBase]: 467/848 cut-off events. [2024-06-21 19:03:23,144 INFO L125 PetriNetUnfolderBase]: For 47064/47064 co-relation queries the response was YES. [2024-06-21 19:03:23,148 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. [2024-06-21 19:03:23,150 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 136 selfloop transitions, 45 changer transitions 0/183 dead transitions. [2024-06-21 19:03:23,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 183 transitions, 2638 flow [2024-06-21 19:03:23,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:03:23,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:03:23,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-21 19:03:23,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2024-06-21 19:03:23,151 INFO L175 Difference]: Start difference. First operand has 199 places, 160 transitions, 1879 flow. Second operand 9 states and 105 transitions. [2024-06-21 19:03:23,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 183 transitions, 2638 flow [2024-06-21 19:03:23,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 183 transitions, 2543 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-21 19:03:23,235 INFO L231 Difference]: Finished difference. Result has 205 places, 172 transitions, 2093 flow [2024-06-21 19:03:23,235 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} [2024-06-21 19:03:23,235 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 175 predicate places. [2024-06-21 19:03:23,235 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 172 transitions, 2093 flow [2024-06-21 19:03:23,235 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) [2024-06-21 19:03:23,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:03:23,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:03:23,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-21 19:03:23,236 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)] === [2024-06-21 19:03:23,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:03:23,236 INFO L85 PathProgramCache]: Analyzing trace with hash 572618452, now seen corresponding path program 8 times [2024-06-21 19:03:23,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:03:23,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383877410] [2024-06-21 19:03:23,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:03:23,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:03:23,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:03:24,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:03:24,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:03:24,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383877410] [2024-06-21 19:03:24,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383877410] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:03:24,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:03:24,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:03:24,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991205767] [2024-06-21 19:03:24,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:03:24,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:03:24,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:03:24,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:03:24,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:03:24,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:03:24,153 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) [2024-06-21 19:03:24,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:03:24,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:03:24,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:03:24,431 INFO L124 PetriNetUnfolderBase]: 465/845 cut-off events. [2024-06-21 19:03:24,431 INFO L125 PetriNetUnfolderBase]: For 48371/48371 co-relation queries the response was YES. [2024-06-21 19:03:24,435 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. [2024-06-21 19:03:24,437 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 132 selfloop transitions, 48 changer transitions 0/182 dead transitions. [2024-06-21 19:03:24,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 182 transitions, 2577 flow [2024-06-21 19:03:24,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:03:24,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:03:24,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-21 19:03:24,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3727598566308244 [2024-06-21 19:03:24,439 INFO L175 Difference]: Start difference. First operand has 205 places, 172 transitions, 2093 flow. Second operand 9 states and 104 transitions. [2024-06-21 19:03:24,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 182 transitions, 2577 flow [2024-06-21 19:03:24,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 182 transitions, 2463 flow, removed 43 selfloop flow, removed 3 redundant places. [2024-06-21 19:03:24,529 INFO L231 Difference]: Finished difference. Result has 211 places, 172 transitions, 2080 flow [2024-06-21 19:03:24,529 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} [2024-06-21 19:03:24,529 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 181 predicate places. [2024-06-21 19:03:24,530 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 172 transitions, 2080 flow [2024-06-21 19:03:24,530 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) [2024-06-21 19:03:24,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:03:24,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:03:24,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-21 19:03:24,530 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)] === [2024-06-21 19:03:24,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:03:24,530 INFO L85 PathProgramCache]: Analyzing trace with hash 572434002, now seen corresponding path program 12 times [2024-06-21 19:03:24,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:03:24,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558327169] [2024-06-21 19:03:24,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:03:24,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:03:24,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:03:25,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:03:25,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:03:25,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558327169] [2024-06-21 19:03:25,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558327169] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:03:25,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:03:25,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:03:25,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919918978] [2024-06-21 19:03:25,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:03:25,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:03:25,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:03:25,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:03:25,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:03:25,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:03:25,759 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) [2024-06-21 19:03:25,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:03:25,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:03:25,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:03:26,036 INFO L124 PetriNetUnfolderBase]: 398/770 cut-off events. [2024-06-21 19:03:26,036 INFO L125 PetriNetUnfolderBase]: For 51473/51473 co-relation queries the response was YES. [2024-06-21 19:03:26,040 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. [2024-06-21 19:03:26,042 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 133 selfloop transitions, 36 changer transitions 0/182 dead transitions. [2024-06-21 19:03:26,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 182 transitions, 2496 flow [2024-06-21 19:03:26,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:03:26,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:03:26,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 99 transitions. [2024-06-21 19:03:26,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39919354838709675 [2024-06-21 19:03:26,043 INFO L175 Difference]: Start difference. First operand has 211 places, 172 transitions, 2080 flow. Second operand 8 states and 99 transitions. [2024-06-21 19:03:26,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 182 transitions, 2496 flow [2024-06-21 19:03:26,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 182 transitions, 2425 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-21 19:03:26,130 INFO L231 Difference]: Finished difference. Result has 214 places, 173 transitions, 2143 flow [2024-06-21 19:03:26,130 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} [2024-06-21 19:03:26,139 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 184 predicate places. [2024-06-21 19:03:26,139 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 173 transitions, 2143 flow [2024-06-21 19:03:26,139 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) [2024-06-21 19:03:26,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:03:26,140 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:03:26,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-21 19:03:26,140 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)] === [2024-06-21 19:03:26,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:03:26,140 INFO L85 PathProgramCache]: Analyzing trace with hash -263839020, now seen corresponding path program 9 times [2024-06-21 19:03:26,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:03:26,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756088350] [2024-06-21 19:03:26,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:03:26,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:03:26,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:03:27,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:03:27,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:03:27,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756088350] [2024-06-21 19:03:27,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756088350] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:03:27,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:03:27,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:03:27,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031454674] [2024-06-21 19:03:27,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:03:27,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:03:27,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:03:27,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:03:27,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:03:27,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:03:27,143 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) [2024-06-21 19:03:27,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:03:27,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:03:27,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:03:27,455 INFO L124 PetriNetUnfolderBase]: 471/858 cut-off events. [2024-06-21 19:03:27,456 INFO L125 PetriNetUnfolderBase]: For 51009/51009 co-relation queries the response was YES. [2024-06-21 19:03:27,460 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. [2024-06-21 19:03:27,462 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 138 selfloop transitions, 45 changer transitions 0/185 dead transitions. [2024-06-21 19:03:27,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 185 transitions, 2668 flow [2024-06-21 19:03:27,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:03:27,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:03:27,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-21 19:03:27,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3727598566308244 [2024-06-21 19:03:27,464 INFO L175 Difference]: Start difference. First operand has 214 places, 173 transitions, 2143 flow. Second operand 9 states and 104 transitions. [2024-06-21 19:03:27,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 185 transitions, 2668 flow [2024-06-21 19:03:27,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 185 transitions, 2544 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-21 19:03:27,558 INFO L231 Difference]: Finished difference. Result has 218 places, 175 transitions, 2157 flow [2024-06-21 19:03:27,558 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} [2024-06-21 19:03:27,558 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 188 predicate places. [2024-06-21 19:03:27,559 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 175 transitions, 2157 flow [2024-06-21 19:03:27,559 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) [2024-06-21 19:03:27,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:03:27,559 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:03:27,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-21 19:03:27,559 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)] === [2024-06-21 19:03:27,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:03:27,560 INFO L85 PathProgramCache]: Analyzing trace with hash -176487452, now seen corresponding path program 10 times [2024-06-21 19:03:27,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:03:27,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914803288] [2024-06-21 19:03:27,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:03:27,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:03:27,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:03:28,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:03:28,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:03:28,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914803288] [2024-06-21 19:03:28,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914803288] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:03:28,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:03:28,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:03:28,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863365740] [2024-06-21 19:03:28,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:03:28,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:03:28,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:03:28,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:03:28,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:03:28,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:03:28,518 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) [2024-06-21 19:03:28,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:03:28,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:03:28,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:03:28,749 INFO L124 PetriNetUnfolderBase]: 477/868 cut-off events. [2024-06-21 19:03:28,749 INFO L125 PetriNetUnfolderBase]: For 51547/51547 co-relation queries the response was YES. [2024-06-21 19:03:28,753 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. [2024-06-21 19:03:28,756 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 104 selfloop transitions, 86 changer transitions 0/192 dead transitions. [2024-06-21 19:03:28,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 192 transitions, 2877 flow [2024-06-21 19:03:28,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:03:28,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:03:28,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-21 19:03:28,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2024-06-21 19:03:28,757 INFO L175 Difference]: Start difference. First operand has 218 places, 175 transitions, 2157 flow. Second operand 9 states and 105 transitions. [2024-06-21 19:03:28,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 192 transitions, 2877 flow [2024-06-21 19:03:28,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 192 transitions, 2776 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-21 19:03:28,853 INFO L231 Difference]: Finished difference. Result has 224 places, 182 transitions, 2360 flow [2024-06-21 19:03:28,854 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} [2024-06-21 19:03:28,854 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 194 predicate places. [2024-06-21 19:03:28,854 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 182 transitions, 2360 flow [2024-06-21 19:03:28,854 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) [2024-06-21 19:03:28,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:03:28,855 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:03:28,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-21 19:03:28,855 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)] === [2024-06-21 19:03:28,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:03:28,855 INFO L85 PathProgramCache]: Analyzing trace with hash -176492412, now seen corresponding path program 13 times [2024-06-21 19:03:28,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:03:28,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381298959] [2024-06-21 19:03:28,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:03:28,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:03:28,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:03:30,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:03:30,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:03:30,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381298959] [2024-06-21 19:03:30,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381298959] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:03:30,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:03:30,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:03:30,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839663907] [2024-06-21 19:03:30,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:03:30,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:03:30,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:03:30,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:03:30,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:03:30,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:03:30,206 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) [2024-06-21 19:03:30,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:03:30,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:03:30,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:03:30,453 INFO L124 PetriNetUnfolderBase]: 400/773 cut-off events. [2024-06-21 19:03:30,454 INFO L125 PetriNetUnfolderBase]: For 52166/52166 co-relation queries the response was YES. [2024-06-21 19:03:30,458 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. [2024-06-21 19:03:30,460 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 110 selfloop transitions, 65 changer transitions 0/190 dead transitions. [2024-06-21 19:03:30,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 190 transitions, 2728 flow [2024-06-21 19:03:30,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:03:30,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:03:30,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-21 19:03:30,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3911290322580645 [2024-06-21 19:03:30,461 INFO L175 Difference]: Start difference. First operand has 224 places, 182 transitions, 2360 flow. Second operand 8 states and 97 transitions. [2024-06-21 19:03:30,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 190 transitions, 2728 flow [2024-06-21 19:03:30,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 190 transitions, 2499 flow, removed 33 selfloop flow, removed 6 redundant places. [2024-06-21 19:03:30,565 INFO L231 Difference]: Finished difference. Result has 226 places, 182 transitions, 2265 flow [2024-06-21 19:03:30,565 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} [2024-06-21 19:03:30,566 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 196 predicate places. [2024-06-21 19:03:30,566 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 182 transitions, 2265 flow [2024-06-21 19:03:30,566 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) [2024-06-21 19:03:30,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:03:30,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:03:30,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-21 19:03:30,566 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)] === [2024-06-21 19:03:30,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:03:30,567 INFO L85 PathProgramCache]: Analyzing trace with hash 36324298, now seen corresponding path program 11 times [2024-06-21 19:03:30,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:03:30,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546560178] [2024-06-21 19:03:30,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:03:30,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:03:30,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:03:31,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:03:31,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:03:31,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546560178] [2024-06-21 19:03:31,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546560178] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:03:31,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:03:31,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:03:31,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807661442] [2024-06-21 19:03:31,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:03:31,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:03:31,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:03:31,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:03:31,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:03:31,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:03:31,597 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) [2024-06-21 19:03:31,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:03:31,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:03:31,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:03:31,843 INFO L124 PetriNetUnfolderBase]: 474/863 cut-off events. [2024-06-21 19:03:31,844 INFO L125 PetriNetUnfolderBase]: For 49227/49227 co-relation queries the response was YES. [2024-06-21 19:03:31,848 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. [2024-06-21 19:03:31,850 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 82 selfloop transitions, 110 changer transitions 0/194 dead transitions. [2024-06-21 19:03:31,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 194 transitions, 2824 flow [2024-06-21 19:03:31,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:03:31,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:03:31,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-21 19:03:31,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3727598566308244 [2024-06-21 19:03:31,851 INFO L175 Difference]: Start difference. First operand has 226 places, 182 transitions, 2265 flow. Second operand 9 states and 104 transitions. [2024-06-21 19:03:31,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 194 transitions, 2824 flow [2024-06-21 19:03:31,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 194 transitions, 2640 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-21 19:03:31,950 INFO L231 Difference]: Finished difference. Result has 229 places, 185 transitions, 2351 flow [2024-06-21 19:03:31,951 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} [2024-06-21 19:03:31,951 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 199 predicate places. [2024-06-21 19:03:31,951 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 185 transitions, 2351 flow [2024-06-21 19:03:31,951 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) [2024-06-21 19:03:31,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:03:31,951 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:03:31,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-21 19:03:31,952 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)] === [2024-06-21 19:03:31,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:03:31,952 INFO L85 PathProgramCache]: Analyzing trace with hash -176307714, now seen corresponding path program 2 times [2024-06-21 19:03:31,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:03:31,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974320046] [2024-06-21 19:03:31,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:03:31,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:03:31,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:03:32,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:03:32,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:03:32,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974320046] [2024-06-21 19:03:32,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974320046] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:03:32,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:03:32,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:03:32,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012089557] [2024-06-21 19:03:32,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:03:32,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:03:32,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:03:32,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:03:32,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:03:32,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:03:32,963 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) [2024-06-21 19:03:32,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:03:32,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:03:32,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:03:33,116 INFO L124 PetriNetUnfolderBase]: 477/870 cut-off events. [2024-06-21 19:03:33,117 INFO L125 PetriNetUnfolderBase]: For 49211/49211 co-relation queries the response was YES. [2024-06-21 19:03:33,121 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. [2024-06-21 19:03:33,123 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 163 selfloop transitions, 33 changer transitions 0/198 dead transitions. [2024-06-21 19:03:33,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 198 transitions, 2923 flow [2024-06-21 19:03:33,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:03:33,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:03:33,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 99 transitions. [2024-06-21 19:03:33,124 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39919354838709675 [2024-06-21 19:03:33,124 INFO L175 Difference]: Start difference. First operand has 229 places, 185 transitions, 2351 flow. Second operand 8 states and 99 transitions. [2024-06-21 19:03:33,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 198 transitions, 2923 flow [2024-06-21 19:03:33,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 198 transitions, 2803 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-21 19:03:33,222 INFO L231 Difference]: Finished difference. Result has 233 places, 189 transitions, 2354 flow [2024-06-21 19:03:33,222 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} [2024-06-21 19:03:33,223 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 203 predicate places. [2024-06-21 19:03:33,223 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 189 transitions, 2354 flow [2024-06-21 19:03:33,226 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) [2024-06-21 19:03:33,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:03:33,226 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:03:33,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-21 19:03:33,227 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)] === [2024-06-21 19:03:33,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:03:33,227 INFO L85 PathProgramCache]: Analyzing trace with hash 59867646, now seen corresponding path program 3 times [2024-06-21 19:03:33,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:03:33,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736588889] [2024-06-21 19:03:33,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:03:33,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:03:33,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:03:34,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:03:34,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:03:34,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736588889] [2024-06-21 19:03:34,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736588889] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:03:34,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:03:34,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:03:34,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596442908] [2024-06-21 19:03:34,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:03:34,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:03:34,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:03:34,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:03:34,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:03:34,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:03:34,229 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) [2024-06-21 19:03:34,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:03:34,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:03:34,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:03:34,406 INFO L124 PetriNetUnfolderBase]: 485/883 cut-off events. [2024-06-21 19:03:34,406 INFO L125 PetriNetUnfolderBase]: For 52331/52331 co-relation queries the response was YES. [2024-06-21 19:03:34,410 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. [2024-06-21 19:03:34,412 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 159 selfloop transitions, 42 changer transitions 0/203 dead transitions. [2024-06-21 19:03:34,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 203 transitions, 3062 flow [2024-06-21 19:03:34,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:03:34,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:03:34,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 98 transitions. [2024-06-21 19:03:34,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3951612903225806 [2024-06-21 19:03:34,414 INFO L175 Difference]: Start difference. First operand has 233 places, 189 transitions, 2354 flow. Second operand 8 states and 98 transitions. [2024-06-21 19:03:34,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 203 transitions, 3062 flow [2024-06-21 19:03:34,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 203 transitions, 3013 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-21 19:03:34,528 INFO L231 Difference]: Finished difference. Result has 237 places, 193 transitions, 2450 flow [2024-06-21 19:03:34,528 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} [2024-06-21 19:03:34,529 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 207 predicate places. [2024-06-21 19:03:34,529 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 193 transitions, 2450 flow [2024-06-21 19:03:34,529 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) [2024-06-21 19:03:34,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:03:34,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:03:34,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-21 19:03:34,530 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)] === [2024-06-21 19:03:34,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:03:34,530 INFO L85 PathProgramCache]: Analyzing trace with hash 60164316, now seen corresponding path program 4 times [2024-06-21 19:03:34,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:03:34,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825721839] [2024-06-21 19:03:34,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:03:34,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:03:34,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:03:35,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:03:35,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:03:35,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825721839] [2024-06-21 19:03:35,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825721839] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:03:35,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:03:35,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:03:35,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039092780] [2024-06-21 19:03:35,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:03:35,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:03:35,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:03:35,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:03:35,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:03:35,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:03:35,647 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) [2024-06-21 19:03:35,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:03:35,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:03:35,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:03:35,952 INFO L124 PetriNetUnfolderBase]: 483/880 cut-off events. [2024-06-21 19:03:35,952 INFO L125 PetriNetUnfolderBase]: For 52360/52360 co-relation queries the response was YES. [2024-06-21 19:03:35,956 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. [2024-06-21 19:03:35,958 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 183 selfloop transitions, 16 changer transitions 0/201 dead transitions. [2024-06-21 19:03:35,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 201 transitions, 2866 flow [2024-06-21 19:03:35,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:03:35,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:03:35,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 88 transitions. [2024-06-21 19:03:35,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3154121863799283 [2024-06-21 19:03:35,960 INFO L175 Difference]: Start difference. First operand has 237 places, 193 transitions, 2450 flow. Second operand 9 states and 88 transitions. [2024-06-21 19:03:35,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 201 transitions, 2866 flow [2024-06-21 19:03:36,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 201 transitions, 2771 flow, removed 19 selfloop flow, removed 4 redundant places. [2024-06-21 19:03:36,078 INFO L231 Difference]: Finished difference. Result has 242 places, 193 transitions, 2392 flow [2024-06-21 19:03:36,078 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} [2024-06-21 19:03:36,078 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 212 predicate places. [2024-06-21 19:03:36,078 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 193 transitions, 2392 flow [2024-06-21 19:03:36,079 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) [2024-06-21 19:03:36,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:03:36,079 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:03:36,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-21 19:03:36,079 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)] === [2024-06-21 19:03:36,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:03:36,079 INFO L85 PathProgramCache]: Analyzing trace with hash -176307962, now seen corresponding path program 12 times [2024-06-21 19:03:36,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:03:36,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943117387] [2024-06-21 19:03:36,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:03:36,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:03:36,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:03:37,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:03:37,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:03:37,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943117387] [2024-06-21 19:03:37,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943117387] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:03:37,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:03:37,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:03:37,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634516453] [2024-06-21 19:03:37,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:03:37,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:03:37,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:03:37,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:03:37,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:03:37,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:03:37,120 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) [2024-06-21 19:03:37,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:03:37,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:03:37,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:03:37,339 INFO L124 PetriNetUnfolderBase]: 494/896 cut-off events. [2024-06-21 19:03:37,339 INFO L125 PetriNetUnfolderBase]: For 55510/55510 co-relation queries the response was YES. [2024-06-21 19:03:37,346 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. [2024-06-21 19:03:37,349 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 116 selfloop transitions, 92 changer transitions 0/210 dead transitions. [2024-06-21 19:03:37,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 210 transitions, 3284 flow [2024-06-21 19:03:37,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:03:37,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:03:37,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-21 19:03:37,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835125448028674 [2024-06-21 19:03:37,350 INFO L175 Difference]: Start difference. First operand has 242 places, 193 transitions, 2392 flow. Second operand 9 states and 107 transitions. [2024-06-21 19:03:37,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 210 transitions, 3284 flow [2024-06-21 19:03:37,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 210 transitions, 3247 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-21 19:03:37,463 INFO L231 Difference]: Finished difference. Result has 244 places, 199 transitions, 2651 flow [2024-06-21 19:03:37,463 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} [2024-06-21 19:03:37,464 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 214 predicate places. [2024-06-21 19:03:37,464 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 199 transitions, 2651 flow [2024-06-21 19:03:37,464 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) [2024-06-21 19:03:37,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:03:37,464 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:03:37,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-21 19:03:37,465 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)] === [2024-06-21 19:03:37,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:03:37,465 INFO L85 PathProgramCache]: Analyzing trace with hash 51586678, now seen corresponding path program 13 times [2024-06-21 19:03:37,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:03:37,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333653263] [2024-06-21 19:03:37,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:03:37,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:03:37,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:03:38,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:03:38,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:03:38,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333653263] [2024-06-21 19:03:38,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333653263] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:03:38,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:03:38,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:03:38,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426432873] [2024-06-21 19:03:38,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:03:38,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:03:38,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:03:38,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:03:38,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:03:38,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:03:38,409 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) [2024-06-21 19:03:38,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:03:38,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:03:38,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:03:38,649 INFO L124 PetriNetUnfolderBase]: 497/901 cut-off events. [2024-06-21 19:03:38,649 INFO L125 PetriNetUnfolderBase]: For 58059/58059 co-relation queries the response was YES. [2024-06-21 19:03:38,654 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. [2024-06-21 19:03:38,656 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 106 selfloop transitions, 103 changer transitions 0/211 dead transitions. [2024-06-21 19:03:38,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 211 transitions, 3375 flow [2024-06-21 19:03:38,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:03:38,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:03:38,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-21 19:03:38,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2024-06-21 19:03:38,657 INFO L175 Difference]: Start difference. First operand has 244 places, 199 transitions, 2651 flow. Second operand 9 states and 105 transitions. [2024-06-21 19:03:38,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 211 transitions, 3375 flow [2024-06-21 19:03:38,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 211 transitions, 3191 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-06-21 19:03:38,781 INFO L231 Difference]: Finished difference. Result has 249 places, 201 transitions, 2722 flow [2024-06-21 19:03:38,781 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} [2024-06-21 19:03:38,781 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 219 predicate places. [2024-06-21 19:03:38,781 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 201 transitions, 2722 flow [2024-06-21 19:03:38,782 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) [2024-06-21 19:03:38,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:03:38,782 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:03:38,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-21 19:03:38,782 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)] === [2024-06-21 19:03:38,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:03:38,782 INFO L85 PathProgramCache]: Analyzing trace with hash 51593436, now seen corresponding path program 5 times [2024-06-21 19:03:38,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:03:38,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794033119] [2024-06-21 19:03:38,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:03:38,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:03:38,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:03:39,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:03:39,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:03:39,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794033119] [2024-06-21 19:03:39,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794033119] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:03:39,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:03:39,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:03:39,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073167395] [2024-06-21 19:03:39,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:03:39,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:03:39,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:03:39,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:03:39,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:03:39,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:03:39,731 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) [2024-06-21 19:03:39,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:03:39,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:03:39,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:03:39,902 INFO L124 PetriNetUnfolderBase]: 495/900 cut-off events. [2024-06-21 19:03:39,902 INFO L125 PetriNetUnfolderBase]: For 58127/58127 co-relation queries the response was YES. [2024-06-21 19:03:39,908 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. [2024-06-21 19:03:39,910 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 168 selfloop transitions, 39 changer transitions 0/209 dead transitions. [2024-06-21 19:03:39,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 209 transitions, 3154 flow [2024-06-21 19:03:39,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:03:39,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:03:39,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-21 19:03:39,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3911290322580645 [2024-06-21 19:03:39,911 INFO L175 Difference]: Start difference. First operand has 249 places, 201 transitions, 2722 flow. Second operand 8 states and 97 transitions. [2024-06-21 19:03:39,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 209 transitions, 3154 flow [2024-06-21 19:03:40,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 209 transitions, 2905 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-21 19:03:40,043 INFO L231 Difference]: Finished difference. Result has 250 places, 201 transitions, 2556 flow [2024-06-21 19:03:40,044 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} [2024-06-21 19:03:40,044 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 220 predicate places. [2024-06-21 19:03:40,044 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 201 transitions, 2556 flow [2024-06-21 19:03:40,044 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) [2024-06-21 19:03:40,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:03:40,045 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:03:40,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-21 19:03:40,045 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)] === [2024-06-21 19:03:40,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:03:40,045 INFO L85 PathProgramCache]: Analyzing trace with hash -176314472, now seen corresponding path program 14 times [2024-06-21 19:03:40,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:03:40,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134344732] [2024-06-21 19:03:40,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:03:40,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:03:40,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:03:40,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:03:40,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:03:40,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134344732] [2024-06-21 19:03:40,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134344732] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:03:40,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:03:40,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:03:40,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251756371] [2024-06-21 19:03:40,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:03:40,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:03:40,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:03:40,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:03:40,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:03:41,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:03:41,027 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) [2024-06-21 19:03:41,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:03:41,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:03:41,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:03:41,248 INFO L124 PetriNetUnfolderBase]: 493/895 cut-off events. [2024-06-21 19:03:41,248 INFO L125 PetriNetUnfolderBase]: For 57100/57100 co-relation queries the response was YES. [2024-06-21 19:03:41,253 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. [2024-06-21 19:03:41,256 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 116 selfloop transitions, 93 changer transitions 0/211 dead transitions. [2024-06-21 19:03:41,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 211 transitions, 3244 flow [2024-06-21 19:03:41,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:03:41,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:03:41,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-21 19:03:41,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835125448028674 [2024-06-21 19:03:41,257 INFO L175 Difference]: Start difference. First operand has 250 places, 201 transitions, 2556 flow. Second operand 9 states and 107 transitions. [2024-06-21 19:03:41,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 211 transitions, 3244 flow [2024-06-21 19:03:41,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 211 transitions, 3106 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-21 19:03:41,381 INFO L231 Difference]: Finished difference. Result has 251 places, 201 transitions, 2609 flow [2024-06-21 19:03:41,382 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} [2024-06-21 19:03:41,382 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 221 predicate places. [2024-06-21 19:03:41,382 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 201 transitions, 2609 flow [2024-06-21 19:03:41,382 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) [2024-06-21 19:03:41,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:03:41,382 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:03:41,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-21 19:03:41,383 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)] === [2024-06-21 19:03:41,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:03:41,383 INFO L85 PathProgramCache]: Analyzing trace with hash 36093658, now seen corresponding path program 15 times [2024-06-21 19:03:41,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:03:41,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178595375] [2024-06-21 19:03:41,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:03:41,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:03:41,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:03:42,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:03:42,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:03:42,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178595375] [2024-06-21 19:03:42,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178595375] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:03:42,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:03:42,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:03:42,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739987367] [2024-06-21 19:03:42,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:03:42,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:03:42,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:03:42,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:03:42,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:03:42,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:03:42,369 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) [2024-06-21 19:03:42,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:03:42,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:03:42,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:03:42,583 INFO L124 PetriNetUnfolderBase]: 491/892 cut-off events. [2024-06-21 19:03:42,583 INFO L125 PetriNetUnfolderBase]: For 57254/57254 co-relation queries the response was YES. [2024-06-21 19:03:42,589 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. [2024-06-21 19:03:42,591 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 106 selfloop transitions, 102 changer transitions 0/210 dead transitions. [2024-06-21 19:03:42,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 210 transitions, 3171 flow [2024-06-21 19:03:42,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:03:42,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:03:42,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-21 19:03:42,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2024-06-21 19:03:42,593 INFO L175 Difference]: Start difference. First operand has 251 places, 201 transitions, 2609 flow. Second operand 9 states and 105 transitions. [2024-06-21 19:03:42,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 210 transitions, 3171 flow [2024-06-21 19:03:42,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 210 transitions, 2954 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-21 19:03:42,748 INFO L231 Difference]: Finished difference. Result has 252 places, 201 transitions, 2601 flow [2024-06-21 19:03:42,749 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} [2024-06-21 19:03:42,749 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 222 predicate places. [2024-06-21 19:03:42,749 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 201 transitions, 2601 flow [2024-06-21 19:03:42,749 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) [2024-06-21 19:03:42,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:03:42,750 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:03:42,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-21 19:03:42,750 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)] === [2024-06-21 19:03:42,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:03:42,751 INFO L85 PathProgramCache]: Analyzing trace with hash 60175228, now seen corresponding path program 1 times [2024-06-21 19:03:42,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:03:42,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270172296] [2024-06-21 19:03:42,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:03:42,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:03:42,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:03:44,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:03:44,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:03:44,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270172296] [2024-06-21 19:03:44,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270172296] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:03:44,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:03:44,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:03:44,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489112616] [2024-06-21 19:03:44,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:03:44,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:03:44,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:03:44,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:03:44,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:03:44,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:03:44,460 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) [2024-06-21 19:03:44,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:03:44,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:03:44,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:03:44,830 INFO L124 PetriNetUnfolderBase]: 488/889 cut-off events. [2024-06-21 19:03:44,830 INFO L125 PetriNetUnfolderBase]: For 56951/56951 co-relation queries the response was YES. [2024-06-21 19:03:44,835 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. [2024-06-21 19:03:44,838 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 192 selfloop transitions, 17 changer transitions 0/211 dead transitions. [2024-06-21 19:03:44,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 211 transitions, 3041 flow [2024-06-21 19:03:44,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:03:44,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:03:44,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 100 transitions. [2024-06-21 19:03:44,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2932551319648094 [2024-06-21 19:03:44,839 INFO L175 Difference]: Start difference. First operand has 252 places, 201 transitions, 2601 flow. Second operand 11 states and 100 transitions. [2024-06-21 19:03:44,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 211 transitions, 3041 flow [2024-06-21 19:03:44,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 211 transitions, 2789 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-21 19:03:44,959 INFO L231 Difference]: Finished difference. Result has 256 places, 201 transitions, 2387 flow [2024-06-21 19:03:44,960 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} [2024-06-21 19:03:44,960 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 226 predicate places. [2024-06-21 19:03:44,960 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 201 transitions, 2387 flow [2024-06-21 19:03:44,960 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) [2024-06-21 19:03:44,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:03:44,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:03:44,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-21 19:03:44,961 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)] === [2024-06-21 19:03:44,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:03:44,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1659289175, now seen corresponding path program 1 times [2024-06-21 19:03:44,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:03:44,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20645930] [2024-06-21 19:03:44,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:03:44,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:03:44,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:03:45,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:03:45,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:03:45,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20645930] [2024-06-21 19:03:45,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20645930] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:03:45,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:03:45,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:03:45,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534767334] [2024-06-21 19:03:45,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:03:45,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:03:45,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:03:45,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:03:45,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:03:45,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:03:45,914 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) [2024-06-21 19:03:45,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:03:45,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:03:45,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:03:46,161 INFO L124 PetriNetUnfolderBase]: 470/869 cut-off events. [2024-06-21 19:03:46,161 INFO L125 PetriNetUnfolderBase]: For 56561/56565 co-relation queries the response was YES. [2024-06-21 19:03:46,166 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. [2024-06-21 19:03:46,168 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 135 selfloop transitions, 57 changer transitions 0/215 dead transitions. [2024-06-21 19:03:46,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 215 transitions, 2855 flow [2024-06-21 19:03:46,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:03:46,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:03:46,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-21 19:03:46,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3727598566308244 [2024-06-21 19:03:46,170 INFO L175 Difference]: Start difference. First operand has 256 places, 201 transitions, 2387 flow. Second operand 9 states and 104 transitions. [2024-06-21 19:03:46,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 215 transitions, 2855 flow [2024-06-21 19:03:46,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 215 transitions, 2813 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-21 19:03:46,356 INFO L231 Difference]: Finished difference. Result has 257 places, 204 transitions, 2555 flow [2024-06-21 19:03:46,356 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} [2024-06-21 19:03:46,356 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 227 predicate places. [2024-06-21 19:03:46,356 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 204 transitions, 2555 flow [2024-06-21 19:03:46,357 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) [2024-06-21 19:03:46,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:03:46,357 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:03:46,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-21 19:03:46,357 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)] === [2024-06-21 19:03:46,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:03:46,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1625499923, now seen corresponding path program 2 times [2024-06-21 19:03:46,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:03:46,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474044205] [2024-06-21 19:03:46,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:03:46,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:03:46,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:03:47,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:03:47,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:03:47,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474044205] [2024-06-21 19:03:47,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474044205] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:03:47,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:03:47,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:03:47,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276271032] [2024-06-21 19:03:47,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:03:47,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:03:47,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:03:47,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:03:47,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:03:47,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:03:47,444 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) [2024-06-21 19:03:47,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:03:47,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:03:47,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:03:47,791 INFO L124 PetriNetUnfolderBase]: 494/897 cut-off events. [2024-06-21 19:03:47,791 INFO L125 PetriNetUnfolderBase]: For 57874/57874 co-relation queries the response was YES. [2024-06-21 19:03:47,796 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. [2024-06-21 19:03:47,798 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 182 selfloop transitions, 39 changer transitions 0/223 dead transitions. [2024-06-21 19:03:47,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 223 transitions, 3101 flow [2024-06-21 19:03:47,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:03:47,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:03:47,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-21 19:03:47,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33724340175953077 [2024-06-21 19:03:47,800 INFO L175 Difference]: Start difference. First operand has 257 places, 204 transitions, 2555 flow. Second operand 11 states and 115 transitions. [2024-06-21 19:03:47,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 223 transitions, 3101 flow [2024-06-21 19:03:47,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 223 transitions, 2971 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-21 19:03:47,949 INFO L231 Difference]: Finished difference. Result has 260 places, 207 transitions, 2585 flow [2024-06-21 19:03:47,949 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} [2024-06-21 19:03:47,949 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 230 predicate places. [2024-06-21 19:03:47,949 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 207 transitions, 2585 flow [2024-06-21 19:03:47,950 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) [2024-06-21 19:03:47,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:03:47,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:03:47,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-21 19:03:47,950 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)] === [2024-06-21 19:03:47,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:03:47,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1368105683, now seen corresponding path program 3 times [2024-06-21 19:03:47,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:03:47,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015867063] [2024-06-21 19:03:47,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:03:47,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:03:47,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:03:49,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:03:49,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:03:49,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015867063] [2024-06-21 19:03:49,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015867063] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:03:49,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:03:49,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:03:49,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431035078] [2024-06-21 19:03:49,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:03:49,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:03:49,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:03:49,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:03:49,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:03:49,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:03:49,284 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) [2024-06-21 19:03:49,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:03:49,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:03:49,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:03:49,698 INFO L124 PetriNetUnfolderBase]: 497/903 cut-off events. [2024-06-21 19:03:49,699 INFO L125 PetriNetUnfolderBase]: For 54813/54813 co-relation queries the response was YES. [2024-06-21 19:03:49,703 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. [2024-06-21 19:03:49,705 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 188 selfloop transitions, 35 changer transitions 0/225 dead transitions. [2024-06-21 19:03:49,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 225 transitions, 3131 flow [2024-06-21 19:03:49,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:03:49,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:03:49,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-21 19:03:49,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36200716845878134 [2024-06-21 19:03:49,708 INFO L175 Difference]: Start difference. First operand has 260 places, 207 transitions, 2585 flow. Second operand 9 states and 101 transitions. [2024-06-21 19:03:49,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 225 transitions, 3131 flow [2024-06-21 19:03:49,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 225 transitions, 3034 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-21 19:03:49,843 INFO L231 Difference]: Finished difference. Result has 261 places, 211 transitions, 2639 flow [2024-06-21 19:03:49,843 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} [2024-06-21 19:03:49,843 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 231 predicate places. [2024-06-21 19:03:49,843 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 211 transitions, 2639 flow [2024-06-21 19:03:49,844 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) [2024-06-21 19:03:49,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:03:49,844 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:03:49,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-21 19:03:49,844 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)] === [2024-06-21 19:03:49,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:03:49,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1363158796, now seen corresponding path program 1 times [2024-06-21 19:03:49,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:03:49,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860652110] [2024-06-21 19:03:49,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:03:49,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:03:49,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:03:50,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:03:50,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:03:50,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860652110] [2024-06-21 19:03:50,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860652110] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:03:50,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:03:50,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:03:50,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976983702] [2024-06-21 19:03:50,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:03:50,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:03:50,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:03:50,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:03:50,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:03:50,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:03:50,859 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) [2024-06-21 19:03:50,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:03:50,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:03:50,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:03:51,149 INFO L124 PetriNetUnfolderBase]: 500/908 cut-off events. [2024-06-21 19:03:51,149 INFO L125 PetriNetUnfolderBase]: For 56815/56815 co-relation queries the response was YES. [2024-06-21 19:03:51,154 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. [2024-06-21 19:03:51,157 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 179 selfloop transitions, 45 changer transitions 0/226 dead transitions. [2024-06-21 19:03:51,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 226 transitions, 3147 flow [2024-06-21 19:03:51,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:03:51,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:03:51,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-21 19:03:51,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37992831541218636 [2024-06-21 19:03:51,158 INFO L175 Difference]: Start difference. First operand has 261 places, 211 transitions, 2639 flow. Second operand 9 states and 106 transitions. [2024-06-21 19:03:51,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 226 transitions, 3147 flow [2024-06-21 19:03:51,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 226 transitions, 3044 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-21 19:03:51,311 INFO L231 Difference]: Finished difference. Result has 264 places, 213 transitions, 2665 flow [2024-06-21 19:03:51,312 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} [2024-06-21 19:03:51,312 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 234 predicate places. [2024-06-21 19:03:51,312 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 213 transitions, 2665 flow [2024-06-21 19:03:51,312 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) [2024-06-21 19:03:51,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:03:51,312 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:03:51,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-21 19:03:51,313 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)] === [2024-06-21 19:03:51,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:03:51,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1095673223, now seen corresponding path program 4 times [2024-06-21 19:03:51,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:03:51,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899915508] [2024-06-21 19:03:51,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:03:51,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:03:51,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:03:52,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:03:52,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:03:52,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899915508] [2024-06-21 19:03:52,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899915508] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:03:52,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:03:52,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:03:52,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723336200] [2024-06-21 19:03:52,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:03:52,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:03:52,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:03:52,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:03:52,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:03:52,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:03:52,551 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) [2024-06-21 19:03:52,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:03:52,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:03:52,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:03:52,928 INFO L124 PetriNetUnfolderBase]: 501/909 cut-off events. [2024-06-21 19:03:52,928 INFO L125 PetriNetUnfolderBase]: For 58127/58127 co-relation queries the response was YES. [2024-06-21 19:03:52,934 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. [2024-06-21 19:03:52,936 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 191 selfloop transitions, 37 changer transitions 0/230 dead transitions. [2024-06-21 19:03:52,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 230 transitions, 3225 flow [2024-06-21 19:03:52,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:03:52,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:03:52,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-21 19:03:52,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36917562724014336 [2024-06-21 19:03:52,937 INFO L175 Difference]: Start difference. First operand has 264 places, 213 transitions, 2665 flow. Second operand 9 states and 103 transitions. [2024-06-21 19:03:52,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 230 transitions, 3225 flow [2024-06-21 19:03:53,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 230 transitions, 3098 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-21 19:03:53,069 INFO L231 Difference]: Finished difference. Result has 267 places, 217 transitions, 2705 flow [2024-06-21 19:03:53,069 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} [2024-06-21 19:03:53,069 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 237 predicate places. [2024-06-21 19:03:53,069 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 217 transitions, 2705 flow [2024-06-21 19:03:53,069 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) [2024-06-21 19:03:53,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:03:53,070 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:03:53,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-21 19:03:53,070 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)] === [2024-06-21 19:03:53,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:03:53,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1688135023, now seen corresponding path program 5 times [2024-06-21 19:03:53,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:03:53,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534012254] [2024-06-21 19:03:53,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:03:53,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:03:53,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:03:54,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:03:54,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:03:54,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534012254] [2024-06-21 19:03:54,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534012254] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:03:54,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:03:54,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:03:54,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115326509] [2024-06-21 19:03:54,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:03:54,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:03:54,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:03:54,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:03:54,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:03:54,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:03:54,406 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) [2024-06-21 19:03:54,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:03:54,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:03:54,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:03:54,788 INFO L124 PetriNetUnfolderBase]: 512/927 cut-off events. [2024-06-21 19:03:54,788 INFO L125 PetriNetUnfolderBase]: For 61066/61066 co-relation queries the response was YES. [2024-06-21 19:03:54,794 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. [2024-06-21 19:03:54,796 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 175 selfloop transitions, 60 changer transitions 0/237 dead transitions. [2024-06-21 19:03:54,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 237 transitions, 3471 flow [2024-06-21 19:03:54,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:03:54,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:03:54,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-21 19:03:54,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-21 19:03:54,802 INFO L175 Difference]: Start difference. First operand has 267 places, 217 transitions, 2705 flow. Second operand 9 states and 108 transitions. [2024-06-21 19:03:54,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 237 transitions, 3471 flow [2024-06-21 19:03:54,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 237 transitions, 3366 flow, removed 31 selfloop flow, removed 4 redundant places. [2024-06-21 19:03:54,967 INFO L231 Difference]: Finished difference. Result has 274 places, 224 transitions, 2880 flow [2024-06-21 19:03:54,968 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} [2024-06-21 19:03:54,969 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 244 predicate places. [2024-06-21 19:03:54,970 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 224 transitions, 2880 flow [2024-06-21 19:03:54,970 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) [2024-06-21 19:03:54,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:03:54,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:03:54,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-21 19:03:54,970 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)] === [2024-06-21 19:03:54,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:03:54,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1335909280, now seen corresponding path program 2 times [2024-06-21 19:03:54,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:03:54,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851926333] [2024-06-21 19:03:54,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:03:54,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:03:54,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:03:55,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:03:55,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:03:55,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851926333] [2024-06-21 19:03:55,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851926333] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:03:55,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:03:55,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:03:55,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277515186] [2024-06-21 19:03:55,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:03:55,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:03:55,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:03:55,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:03:55,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:03:56,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-21 19:03:56,047 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) [2024-06-21 19:03:56,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:03:56,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-21 19:03:56,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:03:56,305 INFO L124 PetriNetUnfolderBase]: 552/992 cut-off events. [2024-06-21 19:03:56,305 INFO L125 PetriNetUnfolderBase]: For 79664/79664 co-relation queries the response was YES. [2024-06-21 19:03:56,312 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. [2024-06-21 19:03:56,315 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 180 selfloop transitions, 71 changer transitions 0/254 dead transitions. [2024-06-21 19:03:56,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 254 transitions, 4140 flow [2024-06-21 19:03:56,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:03:56,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:03:56,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 127 transitions. [2024-06-21 19:03:56,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4551971326164875 [2024-06-21 19:03:56,316 INFO L175 Difference]: Start difference. First operand has 274 places, 224 transitions, 2880 flow. Second operand 9 states and 127 transitions. [2024-06-21 19:03:56,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 254 transitions, 4140 flow [2024-06-21 19:03:56,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 254 transitions, 3996 flow, removed 43 selfloop flow, removed 4 redundant places. [2024-06-21 19:03:56,492 INFO L231 Difference]: Finished difference. Result has 282 places, 235 transitions, 3138 flow [2024-06-21 19:03:56,492 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} [2024-06-21 19:03:56,493 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 252 predicate places. [2024-06-21 19:03:56,493 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 235 transitions, 3138 flow [2024-06-21 19:03:56,493 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) [2024-06-21 19:03:56,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:03:56,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:03:56,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-21 19:03:56,494 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)] === [2024-06-21 19:03:56,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:03:56,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1341473253, now seen corresponding path program 6 times [2024-06-21 19:03:56,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:03:56,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30186291] [2024-06-21 19:03:56,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:03:56,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:03:56,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:03:57,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:03:57,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:03:57,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30186291] [2024-06-21 19:03:57,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30186291] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:03:57,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:03:57,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:03:57,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375089007] [2024-06-21 19:03:57,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:03:57,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:03:57,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:03:57,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:03:57,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:03:57,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:03:57,560 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) [2024-06-21 19:03:57,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:03:57,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:03:57,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:03:57,855 INFO L124 PetriNetUnfolderBase]: 555/997 cut-off events. [2024-06-21 19:03:57,856 INFO L125 PetriNetUnfolderBase]: For 80486/80486 co-relation queries the response was YES. [2024-06-21 19:03:57,862 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. [2024-06-21 19:03:57,865 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 169 selfloop transitions, 80 changer transitions 0/251 dead transitions. [2024-06-21 19:03:57,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 251 transitions, 3867 flow [2024-06-21 19:03:57,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:03:57,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:03:57,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-21 19:03:57,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3580645161290323 [2024-06-21 19:03:57,871 INFO L175 Difference]: Start difference. First operand has 282 places, 235 transitions, 3138 flow. Second operand 10 states and 111 transitions. [2024-06-21 19:03:57,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 251 transitions, 3867 flow [2024-06-21 19:03:58,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 251 transitions, 3791 flow, removed 28 selfloop flow, removed 2 redundant places. [2024-06-21 19:03:58,092 INFO L231 Difference]: Finished difference. Result has 290 places, 238 transitions, 3289 flow [2024-06-21 19:03:58,092 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} [2024-06-21 19:03:58,093 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 260 predicate places. [2024-06-21 19:03:58,093 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 238 transitions, 3289 flow [2024-06-21 19:03:58,093 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) [2024-06-21 19:03:58,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:03:58,093 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:03:58,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-21 19:03:58,093 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)] === [2024-06-21 19:03:58,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:03:58,094 INFO L85 PathProgramCache]: Analyzing trace with hash -406215497, now seen corresponding path program 7 times [2024-06-21 19:03:58,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:03:58,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85015926] [2024-06-21 19:03:58,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:03:58,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:03:58,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:03:59,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:03:59,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:03:59,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85015926] [2024-06-21 19:03:59,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85015926] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:03:59,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:03:59,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:03:59,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089168354] [2024-06-21 19:03:59,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:03:59,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:03:59,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:03:59,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:03:59,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:03:59,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:03:59,152 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) [2024-06-21 19:03:59,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:03:59,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:03:59,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:03:59,501 INFO L124 PetriNetUnfolderBase]: 553/994 cut-off events. [2024-06-21 19:03:59,501 INFO L125 PetriNetUnfolderBase]: For 79083/79083 co-relation queries the response was YES. [2024-06-21 19:03:59,507 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. [2024-06-21 19:03:59,509 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 178 selfloop transitions, 70 changer transitions 0/250 dead transitions. [2024-06-21 19:03:59,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 250 transitions, 3815 flow [2024-06-21 19:03:59,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:03:59,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:03:59,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-21 19:03:59,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37992831541218636 [2024-06-21 19:03:59,510 INFO L175 Difference]: Start difference. First operand has 290 places, 238 transitions, 3289 flow. Second operand 9 states and 106 transitions. [2024-06-21 19:03:59,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 250 transitions, 3815 flow [2024-06-21 19:03:59,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 250 transitions, 3674 flow, removed 34 selfloop flow, removed 5 redundant places. [2024-06-21 19:03:59,723 INFO L231 Difference]: Finished difference. Result has 294 places, 238 transitions, 3295 flow [2024-06-21 19:03:59,723 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} [2024-06-21 19:03:59,724 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 264 predicate places. [2024-06-21 19:03:59,724 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 238 transitions, 3295 flow [2024-06-21 19:03:59,724 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) [2024-06-21 19:03:59,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:03:59,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:03:59,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-21 19:03:59,724 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)] === [2024-06-21 19:03:59,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:03:59,725 INFO L85 PathProgramCache]: Analyzing trace with hash -406209700, now seen corresponding path program 3 times [2024-06-21 19:03:59,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:03:59,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646826269] [2024-06-21 19:03:59,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:03:59,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:03:59,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:04:00,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:04:00,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:04:00,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646826269] [2024-06-21 19:04:00,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646826269] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:04:00,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:04:00,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:04:00,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740045746] [2024-06-21 19:04:00,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:04:00,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:04:00,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:04:00,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:04:00,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:04:00,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-21 19:04:00,596 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) [2024-06-21 19:04:00,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:04:00,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-21 19:04:00,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:04:00,842 INFO L124 PetriNetUnfolderBase]: 565/1014 cut-off events. [2024-06-21 19:04:00,843 INFO L125 PetriNetUnfolderBase]: For 86283/86283 co-relation queries the response was YES. [2024-06-21 19:04:00,850 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. [2024-06-21 19:04:00,853 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 173 selfloop transitions, 88 changer transitions 0/264 dead transitions. [2024-06-21 19:04:00,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 264 transitions, 4519 flow [2024-06-21 19:04:00,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:04:00,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:04:00,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 126 transitions. [2024-06-21 19:04:00,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45161290322580644 [2024-06-21 19:04:00,854 INFO L175 Difference]: Start difference. First operand has 294 places, 238 transitions, 3295 flow. Second operand 9 states and 126 transitions. [2024-06-21 19:04:00,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 264 transitions, 4519 flow [2024-06-21 19:04:01,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 264 transitions, 4353 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-21 19:04:01,079 INFO L231 Difference]: Finished difference. Result has 297 places, 245 transitions, 3487 flow [2024-06-21 19:04:01,079 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} [2024-06-21 19:04:01,079 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 267 predicate places. [2024-06-21 19:04:01,080 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 245 transitions, 3487 flow [2024-06-21 19:04:01,080 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) [2024-06-21 19:04:01,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:04:01,080 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:04:01,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-21 19:04:01,080 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)] === [2024-06-21 19:04:01,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:04:01,081 INFO L85 PathProgramCache]: Analyzing trace with hash -406000450, now seen corresponding path program 4 times [2024-06-21 19:04:01,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:04:01,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902304382] [2024-06-21 19:04:01,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:04:01,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:04:01,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:04:02,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:04:02,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:04:02,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902304382] [2024-06-21 19:04:02,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902304382] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:04:02,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:04:02,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:04:02,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510766151] [2024-06-21 19:04:02,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:04:02,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:04:02,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:04:02,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:04:02,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:04:02,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:04:02,081 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) [2024-06-21 19:04:02,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:04:02,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:04:02,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:04:02,513 INFO L124 PetriNetUnfolderBase]: 573/1027 cut-off events. [2024-06-21 19:04:02,513 INFO L125 PetriNetUnfolderBase]: For 90525/90525 co-relation queries the response was YES. [2024-06-21 19:04:02,520 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. [2024-06-21 19:04:02,523 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 162 selfloop transitions, 102 changer transitions 0/266 dead transitions. [2024-06-21 19:04:02,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 266 transitions, 4470 flow [2024-06-21 19:04:02,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:04:02,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:04:02,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-21 19:04:02,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40860215053763443 [2024-06-21 19:04:02,546 INFO L175 Difference]: Start difference. First operand has 297 places, 245 transitions, 3487 flow. Second operand 9 states and 114 transitions. [2024-06-21 19:04:02,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 266 transitions, 4470 flow [2024-06-21 19:04:02,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 266 transitions, 4338 flow, removed 24 selfloop flow, removed 4 redundant places. [2024-06-21 19:04:02,792 INFO L231 Difference]: Finished difference. Result has 303 places, 253 transitions, 3738 flow [2024-06-21 19:04:02,808 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} [2024-06-21 19:04:02,808 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 273 predicate places. [2024-06-21 19:04:02,808 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 253 transitions, 3738 flow [2024-06-21 19:04:02,808 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) [2024-06-21 19:04:02,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:04:02,809 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:04:02,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-21 19:04:02,809 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)] === [2024-06-21 19:04:02,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:04:02,809 INFO L85 PathProgramCache]: Analyzing trace with hash -406007890, now seen corresponding path program 5 times [2024-06-21 19:04:02,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:04:02,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234846640] [2024-06-21 19:04:02,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:04:02,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:04:02,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:04:03,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:04:03,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:04:03,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234846640] [2024-06-21 19:04:03,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234846640] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:04:03,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:04:03,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:04:03,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131546274] [2024-06-21 19:04:03,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:04:03,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:04:03,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:04:03,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:04:03,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:04:03,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-21 19:04:03,979 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) [2024-06-21 19:04:03,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:04:03,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-21 19:04:03,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:04:04,247 INFO L124 PetriNetUnfolderBase]: 575/1031 cut-off events. [2024-06-21 19:04:04,247 INFO L125 PetriNetUnfolderBase]: For 90705/90705 co-relation queries the response was YES. [2024-06-21 19:04:04,254 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. [2024-06-21 19:04:04,258 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 158 selfloop transitions, 110 changer transitions 0/271 dead transitions. [2024-06-21 19:04:04,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 271 transitions, 4717 flow [2024-06-21 19:04:04,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:04:04,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:04:04,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 124 transitions. [2024-06-21 19:04:04,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-21 19:04:04,259 INFO L175 Difference]: Start difference. First operand has 303 places, 253 transitions, 3738 flow. Second operand 9 states and 124 transitions. [2024-06-21 19:04:04,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 271 transitions, 4717 flow [2024-06-21 19:04:04,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 271 transitions, 4556 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-21 19:04:04,526 INFO L231 Difference]: Finished difference. Result has 308 places, 256 transitions, 3889 flow [2024-06-21 19:04:04,526 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} [2024-06-21 19:04:04,526 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 278 predicate places. [2024-06-21 19:04:04,527 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 256 transitions, 3889 flow [2024-06-21 19:04:04,527 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) [2024-06-21 19:04:04,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:04:04,527 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:04:04,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-21 19:04:04,527 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)] === [2024-06-21 19:04:04,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:04:04,527 INFO L85 PathProgramCache]: Analyzing trace with hash -406000171, now seen corresponding path program 1 times [2024-06-21 19:04:04,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:04:04,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755483581] [2024-06-21 19:04:04,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:04:04,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:04:04,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:04:05,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:04:05,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:04:05,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755483581] [2024-06-21 19:04:05,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755483581] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:04:05,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:04:05,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:04:05,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749467125] [2024-06-21 19:04:05,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:04:05,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:04:05,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:04:05,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:04:05,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:04:05,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:04:05,569 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) [2024-06-21 19:04:05,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:04:05,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:04:05,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:04:05,894 INFO L124 PetriNetUnfolderBase]: 585/1048 cut-off events. [2024-06-21 19:04:05,894 INFO L125 PetriNetUnfolderBase]: For 96748/96748 co-relation queries the response was YES. [2024-06-21 19:04:05,901 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. [2024-06-21 19:04:05,905 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 167 selfloop transitions, 104 changer transitions 0/273 dead transitions. [2024-06-21 19:04:05,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 273 transitions, 4829 flow [2024-06-21 19:04:05,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:04:05,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:04:05,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-21 19:04:05,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4157706093189964 [2024-06-21 19:04:05,906 INFO L175 Difference]: Start difference. First operand has 308 places, 256 transitions, 3889 flow. Second operand 9 states and 116 transitions. [2024-06-21 19:04:05,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 273 transitions, 4829 flow [2024-06-21 19:04:06,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 273 transitions, 4683 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-06-21 19:04:06,206 INFO L231 Difference]: Finished difference. Result has 313 places, 259 transitions, 4017 flow [2024-06-21 19:04:06,206 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} [2024-06-21 19:04:06,206 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 283 predicate places. [2024-06-21 19:04:06,206 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 259 transitions, 4017 flow [2024-06-21 19:04:06,207 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) [2024-06-21 19:04:06,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:04:06,207 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:04:06,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-21 19:04:06,207 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)] === [2024-06-21 19:04:06,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:04:06,207 INFO L85 PathProgramCache]: Analyzing trace with hash -948997979, now seen corresponding path program 8 times [2024-06-21 19:04:06,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:04:06,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275306695] [2024-06-21 19:04:06,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:04:06,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:04:06,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:04:07,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:04:07,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:04:07,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275306695] [2024-06-21 19:04:07,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275306695] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:04:07,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:04:07,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:04:07,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93540003] [2024-06-21 19:04:07,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:04:07,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:04:07,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:04:07,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:04:07,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:04:07,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:04:07,434 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) [2024-06-21 19:04:07,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:04:07,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:04:07,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:04:07,839 INFO L124 PetriNetUnfolderBase]: 581/1042 cut-off events. [2024-06-21 19:04:07,839 INFO L125 PetriNetUnfolderBase]: For 90059/90059 co-relation queries the response was YES. [2024-06-21 19:04:07,847 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. [2024-06-21 19:04:07,850 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 231 selfloop transitions, 38 changer transitions 0/271 dead transitions. [2024-06-21 19:04:07,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 271 transitions, 4641 flow [2024-06-21 19:04:07,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:04:07,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:04:07,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-21 19:04:07,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-21 19:04:07,852 INFO L175 Difference]: Start difference. First operand has 313 places, 259 transitions, 4017 flow. Second operand 10 states and 105 transitions. [2024-06-21 19:04:07,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 271 transitions, 4641 flow [2024-06-21 19:04:08,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 271 transitions, 4379 flow, removed 32 selfloop flow, removed 7 redundant places. [2024-06-21 19:04:08,147 INFO L231 Difference]: Finished difference. Result has 316 places, 261 transitions, 3905 flow [2024-06-21 19:04:08,147 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} [2024-06-21 19:04:08,148 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 286 predicate places. [2024-06-21 19:04:08,148 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 261 transitions, 3905 flow [2024-06-21 19:04:08,148 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) [2024-06-21 19:04:08,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:04:08,148 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:04:08,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-21 19:04:08,148 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)] === [2024-06-21 19:04:08,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:04:08,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1583103045, now seen corresponding path program 9 times [2024-06-21 19:04:08,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:04:08,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903784371] [2024-06-21 19:04:08,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:04:08,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:04:08,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:04:09,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:04:09,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:04:09,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903784371] [2024-06-21 19:04:09,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903784371] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:04:09,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:04:09,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:04:09,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279400841] [2024-06-21 19:04:09,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:04:09,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:04:09,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:04:09,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:04:09,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:04:09,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:04:09,512 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) [2024-06-21 19:04:09,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:04:09,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:04:09,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:04:09,932 INFO L124 PetriNetUnfolderBase]: 578/1037 cut-off events. [2024-06-21 19:04:09,933 INFO L125 PetriNetUnfolderBase]: For 86849/86849 co-relation queries the response was YES. [2024-06-21 19:04:09,940 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. [2024-06-21 19:04:09,943 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 219 selfloop transitions, 51 changer transitions 0/272 dead transitions. [2024-06-21 19:04:09,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 272 transitions, 4649 flow [2024-06-21 19:04:09,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:04:09,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:04:09,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-21 19:04:09,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835125448028674 [2024-06-21 19:04:09,944 INFO L175 Difference]: Start difference. First operand has 316 places, 261 transitions, 3905 flow. Second operand 9 states and 107 transitions. [2024-06-21 19:04:09,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 272 transitions, 4649 flow [2024-06-21 19:04:10,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 272 transitions, 4478 flow, removed 49 selfloop flow, removed 9 redundant places. [2024-06-21 19:04:10,215 INFO L231 Difference]: Finished difference. Result has 317 places, 262 transitions, 3886 flow [2024-06-21 19:04:10,216 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} [2024-06-21 19:04:10,216 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 287 predicate places. [2024-06-21 19:04:10,216 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 262 transitions, 3886 flow [2024-06-21 19:04:10,216 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) [2024-06-21 19:04:10,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:04:10,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:04:10,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-21 19:04:10,217 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)] === [2024-06-21 19:04:10,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:04:10,217 INFO L85 PathProgramCache]: Analyzing trace with hash 573722497, now seen corresponding path program 10 times [2024-06-21 19:04:10,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:04:10,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367140655] [2024-06-21 19:04:10,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:04:10,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:04:10,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:04:11,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:04:11,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:04:11,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367140655] [2024-06-21 19:04:11,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367140655] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:04:11,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:04:11,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:04:11,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632897663] [2024-06-21 19:04:11,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:04:11,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:04:11,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:04:11,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:04:11,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:04:11,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:04:11,767 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) [2024-06-21 19:04:11,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:04:11,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:04:11,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:04:12,217 INFO L124 PetriNetUnfolderBase]: 575/1032 cut-off events. [2024-06-21 19:04:12,217 INFO L125 PetriNetUnfolderBase]: For 85614/85614 co-relation queries the response was YES. [2024-06-21 19:04:12,224 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. [2024-06-21 19:04:12,227 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 216 selfloop transitions, 54 changer transitions 0/272 dead transitions. [2024-06-21 19:04:12,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 272 transitions, 4604 flow [2024-06-21 19:04:12,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:04:12,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:04:12,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-21 19:04:12,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37992831541218636 [2024-06-21 19:04:12,236 INFO L175 Difference]: Start difference. First operand has 317 places, 262 transitions, 3886 flow. Second operand 9 states and 106 transitions. [2024-06-21 19:04:12,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 272 transitions, 4604 flow [2024-06-21 19:04:12,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 272 transitions, 4405 flow, removed 28 selfloop flow, removed 10 redundant places. [2024-06-21 19:04:12,527 INFO L231 Difference]: Finished difference. Result has 316 places, 262 transitions, 3804 flow [2024-06-21 19:04:12,527 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} [2024-06-21 19:04:12,527 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 286 predicate places. [2024-06-21 19:04:12,527 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 262 transitions, 3804 flow [2024-06-21 19:04:12,527 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) [2024-06-21 19:04:12,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:04:12,528 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:04:12,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-21 19:04:12,528 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)] === [2024-06-21 19:04:12,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:04:12,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1577533275, now seen corresponding path program 11 times [2024-06-21 19:04:12,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:04:12,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376143484] [2024-06-21 19:04:12,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:04:12,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:04:12,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:04:13,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:04:13,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:04:13,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376143484] [2024-06-21 19:04:13,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376143484] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:04:13,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:04:13,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:04:13,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434332497] [2024-06-21 19:04:13,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:04:13,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:04:13,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:04:13,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:04:13,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:04:13,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:04:13,740 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) [2024-06-21 19:04:13,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:04:13,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:04:13,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:04:14,080 INFO L124 PetriNetUnfolderBase]: 572/1027 cut-off events. [2024-06-21 19:04:14,080 INFO L125 PetriNetUnfolderBase]: For 82199/82199 co-relation queries the response was YES. [2024-06-21 19:04:14,087 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. [2024-06-21 19:04:14,090 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 210 selfloop transitions, 59 changer transitions 0/271 dead transitions. [2024-06-21 19:04:14,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 271 transitions, 4364 flow [2024-06-21 19:04:14,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:04:14,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:04:14,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-21 19:04:14,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-21 19:04:14,091 INFO L175 Difference]: Start difference. First operand has 316 places, 262 transitions, 3804 flow. Second operand 10 states and 109 transitions. [2024-06-21 19:04:14,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 271 transitions, 4364 flow [2024-06-21 19:04:14,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 271 transitions, 4181 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-21 19:04:14,375 INFO L231 Difference]: Finished difference. Result has 317 places, 262 transitions, 3745 flow [2024-06-21 19:04:14,375 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} [2024-06-21 19:04:14,376 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 287 predicate places. [2024-06-21 19:04:14,376 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 262 transitions, 3745 flow [2024-06-21 19:04:14,376 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) [2024-06-21 19:04:14,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:04:14,376 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:04:14,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-21 19:04:14,376 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)] === [2024-06-21 19:04:14,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:04:14,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1170578243, now seen corresponding path program 12 times [2024-06-21 19:04:14,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:04:14,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938330956] [2024-06-21 19:04:14,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:04:14,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:04:14,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:04:15,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:04:15,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:04:15,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938330956] [2024-06-21 19:04:15,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938330956] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:04:15,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:04:15,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:04:15,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818766482] [2024-06-21 19:04:15,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:04:15,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:04:15,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:04:15,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:04:15,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:04:15,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:04:15,699 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) [2024-06-21 19:04:15,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:04:15,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:04:15,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:04:16,030 INFO L124 PetriNetUnfolderBase]: 583/1045 cut-off events. [2024-06-21 19:04:16,030 INFO L125 PetriNetUnfolderBase]: For 85455/85455 co-relation queries the response was YES. [2024-06-21 19:04:16,038 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. [2024-06-21 19:04:16,041 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 172 selfloop transitions, 107 changer transitions 0/281 dead transitions. [2024-06-21 19:04:16,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 281 transitions, 4833 flow [2024-06-21 19:04:16,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:04:16,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:04:16,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-21 19:04:16,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3942652329749104 [2024-06-21 19:04:16,043 INFO L175 Difference]: Start difference. First operand has 317 places, 262 transitions, 3745 flow. Second operand 9 states and 110 transitions. [2024-06-21 19:04:16,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 281 transitions, 4833 flow [2024-06-21 19:04:16,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 281 transitions, 4679 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-21 19:04:16,331 INFO L231 Difference]: Finished difference. Result has 319 places, 271 transitions, 4045 flow [2024-06-21 19:04:16,332 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} [2024-06-21 19:04:16,332 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 289 predicate places. [2024-06-21 19:04:16,332 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 271 transitions, 4045 flow [2024-06-21 19:04:16,332 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) [2024-06-21 19:04:16,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:04:16,332 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:04:16,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-21 19:04:16,333 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)] === [2024-06-21 19:04:16,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:04:16,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1170578026, now seen corresponding path program 6 times [2024-06-21 19:04:16,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:04:16,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984659278] [2024-06-21 19:04:16,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:04:16,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:04:16,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:04:17,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:04:17,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:04:17,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984659278] [2024-06-21 19:04:17,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984659278] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:04:17,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:04:17,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:04:17,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127766142] [2024-06-21 19:04:17,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:04:17,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:04:17,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:04:17,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:04:17,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:04:17,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:04:17,430 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) [2024-06-21 19:04:17,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:04:17,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:04:17,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:04:17,797 INFO L124 PetriNetUnfolderBase]: 596/1066 cut-off events. [2024-06-21 19:04:17,797 INFO L125 PetriNetUnfolderBase]: For 92665/92665 co-relation queries the response was YES. [2024-06-21 19:04:17,805 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. [2024-06-21 19:04:17,809 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 195 selfloop transitions, 95 changer transitions 0/292 dead transitions. [2024-06-21 19:04:17,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 292 transitions, 5413 flow [2024-06-21 19:04:17,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:04:17,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:04:17,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-21 19:04:17,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43010752688172044 [2024-06-21 19:04:17,810 INFO L175 Difference]: Start difference. First operand has 319 places, 271 transitions, 4045 flow. Second operand 9 states and 120 transitions. [2024-06-21 19:04:17,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 292 transitions, 5413 flow [2024-06-21 19:04:18,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 292 transitions, 5193 flow, removed 50 selfloop flow, removed 6 redundant places. [2024-06-21 19:04:18,094 INFO L231 Difference]: Finished difference. Result has 322 places, 279 transitions, 4176 flow [2024-06-21 19:04:18,094 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} [2024-06-21 19:04:18,094 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 292 predicate places. [2024-06-21 19:04:18,094 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 279 transitions, 4176 flow [2024-06-21 19:04:18,094 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) [2024-06-21 19:04:18,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:04:18,095 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:04:18,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-21 19:04:18,095 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)] === [2024-06-21 19:04:18,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:04:18,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1118912338, now seen corresponding path program 7 times [2024-06-21 19:04:18,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:04:18,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150788861] [2024-06-21 19:04:18,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:04:18,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:04:18,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:04:19,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:04:19,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:04:19,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150788861] [2024-06-21 19:04:19,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150788861] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:04:19,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:04:19,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:04:19,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912175372] [2024-06-21 19:04:19,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:04:19,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:04:19,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:04:19,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:04:19,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:04:19,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:04:19,202 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) [2024-06-21 19:04:19,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:04:19,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:04:19,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:04:19,581 INFO L124 PetriNetUnfolderBase]: 604/1079 cut-off events. [2024-06-21 19:04:19,582 INFO L125 PetriNetUnfolderBase]: For 95550/95550 co-relation queries the response was YES. [2024-06-21 19:04:19,589 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. [2024-06-21 19:04:19,593 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 183 selfloop transitions, 110 changer transitions 0/295 dead transitions. [2024-06-21 19:04:19,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 295 transitions, 5330 flow [2024-06-21 19:04:19,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:04:19,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:04:19,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-21 19:04:19,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4229390681003584 [2024-06-21 19:04:19,596 INFO L175 Difference]: Start difference. First operand has 322 places, 279 transitions, 4176 flow. Second operand 9 states and 118 transitions. [2024-06-21 19:04:19,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 295 transitions, 5330 flow [2024-06-21 19:04:19,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 295 transitions, 5194 flow, removed 27 selfloop flow, removed 3 redundant places. [2024-06-21 19:04:19,889 INFO L231 Difference]: Finished difference. Result has 328 places, 283 transitions, 4345 flow [2024-06-21 19:04:19,889 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} [2024-06-21 19:04:19,890 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 298 predicate places. [2024-06-21 19:04:19,890 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 283 transitions, 4345 flow [2024-06-21 19:04:19,890 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) [2024-06-21 19:04:19,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:04:19,891 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:04:19,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-21 19:04:19,891 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)] === [2024-06-21 19:04:19,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:04:19,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1170570586, now seen corresponding path program 8 times [2024-06-21 19:04:19,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:04:19,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594274046] [2024-06-21 19:04:19,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:04:19,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:04:19,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:04:20,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:04:20,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:04:20,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594274046] [2024-06-21 19:04:20,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594274046] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:04:20,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:04:20,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:04:20,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875190698] [2024-06-21 19:04:20,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:04:20,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:04:20,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:04:20,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:04:20,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:04:20,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:04:20,919 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) [2024-06-21 19:04:20,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:04:20,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:04:20,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:04:21,276 INFO L124 PetriNetUnfolderBase]: 602/1076 cut-off events. [2024-06-21 19:04:21,276 INFO L125 PetriNetUnfolderBase]: For 93820/93820 co-relation queries the response was YES. [2024-06-21 19:04:21,284 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. [2024-06-21 19:04:21,287 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 192 selfloop transitions, 101 changer transitions 0/295 dead transitions. [2024-06-21 19:04:21,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 295 transitions, 5425 flow [2024-06-21 19:04:21,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:04:21,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:04:21,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-21 19:04:21,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4229390681003584 [2024-06-21 19:04:21,289 INFO L175 Difference]: Start difference. First operand has 328 places, 283 transitions, 4345 flow. Second operand 9 states and 118 transitions. [2024-06-21 19:04:21,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 295 transitions, 5425 flow [2024-06-21 19:04:21,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 295 transitions, 5152 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-21 19:04:21,616 INFO L231 Difference]: Finished difference. Result has 331 places, 283 transitions, 4279 flow [2024-06-21 19:04:21,617 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} [2024-06-21 19:04:21,617 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 301 predicate places. [2024-06-21 19:04:21,617 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 283 transitions, 4279 flow [2024-06-21 19:04:21,617 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) [2024-06-21 19:04:21,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:04:21,617 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:04:21,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-21 19:04:21,618 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)] === [2024-06-21 19:04:21,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:04:21,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1118912617, now seen corresponding path program 2 times [2024-06-21 19:04:21,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:04:21,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944319121] [2024-06-21 19:04:21,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:04:21,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:04:21,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:04:22,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:04:22,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:04:22,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944319121] [2024-06-21 19:04:22,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944319121] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:04:22,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:04:22,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:04:22,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686272465] [2024-06-21 19:04:22,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:04:22,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:04:22,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:04:22,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:04:22,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:04:22,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:04:22,579 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) [2024-06-21 19:04:22,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:04:22,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:04:22,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:04:22,834 INFO L124 PetriNetUnfolderBase]: 613/1095 cut-off events. [2024-06-21 19:04:22,835 INFO L125 PetriNetUnfolderBase]: For 102434/102434 co-relation queries the response was YES. [2024-06-21 19:04:22,844 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. [2024-06-21 19:04:22,848 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 185 selfloop transitions, 112 changer transitions 0/299 dead transitions. [2024-06-21 19:04:22,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 299 transitions, 5455 flow [2024-06-21 19:04:22,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:04:22,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:04:22,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-21 19:04:22,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43010752688172044 [2024-06-21 19:04:22,849 INFO L175 Difference]: Start difference. First operand has 331 places, 283 transitions, 4279 flow. Second operand 9 states and 120 transitions. [2024-06-21 19:04:22,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 299 transitions, 5455 flow [2024-06-21 19:04:23,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 299 transitions, 5256 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-21 19:04:23,149 INFO L231 Difference]: Finished difference. Result has 333 places, 286 transitions, 4374 flow [2024-06-21 19:04:23,150 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} [2024-06-21 19:04:23,150 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 303 predicate places. [2024-06-21 19:04:23,150 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 286 transitions, 4374 flow [2024-06-21 19:04:23,151 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) [2024-06-21 19:04:23,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:04:23,151 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:04:23,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-21 19:04:23,151 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)] === [2024-06-21 19:04:23,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:04:23,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1118904898, now seen corresponding path program 9 times [2024-06-21 19:04:23,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:04:23,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352691855] [2024-06-21 19:04:23,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:04:23,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:04:23,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:04:23,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:04:23,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:04:23,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352691855] [2024-06-21 19:04:23,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352691855] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:04:23,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:04:23,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:04:23,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550623222] [2024-06-21 19:04:23,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:04:23,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:04:23,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:04:23,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:04:23,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:04:24,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:04:24,037 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) [2024-06-21 19:04:24,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:04:24,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:04:24,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:04:24,347 INFO L124 PetriNetUnfolderBase]: 616/1100 cut-off events. [2024-06-21 19:04:24,347 INFO L125 PetriNetUnfolderBase]: For 98884/98884 co-relation queries the response was YES. [2024-06-21 19:04:24,355 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. [2024-06-21 19:04:24,359 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 187 selfloop transitions, 111 changer transitions 0/300 dead transitions. [2024-06-21 19:04:24,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 300 transitions, 5515 flow [2024-06-21 19:04:24,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:04:24,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:04:24,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-21 19:04:24,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4265232974910394 [2024-06-21 19:04:24,361 INFO L175 Difference]: Start difference. First operand has 333 places, 286 transitions, 4374 flow. Second operand 9 states and 119 transitions. [2024-06-21 19:04:24,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 300 transitions, 5515 flow [2024-06-21 19:04:24,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 300 transitions, 5244 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-21 19:04:24,695 INFO L231 Difference]: Finished difference. Result has 335 places, 288 transitions, 4369 flow [2024-06-21 19:04:24,695 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} [2024-06-21 19:04:24,695 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 305 predicate places. [2024-06-21 19:04:24,695 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 288 transitions, 4369 flow [2024-06-21 19:04:24,695 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) [2024-06-21 19:04:24,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:04:24,696 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:04:24,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-21 19:04:24,696 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)] === [2024-06-21 19:04:24,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:04:24,696 INFO L85 PathProgramCache]: Analyzing trace with hash -969221866, now seen corresponding path program 10 times [2024-06-21 19:04:24,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:04:24,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121868112] [2024-06-21 19:04:24,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:04:24,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:04:24,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:04:25,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:04:25,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:04:25,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121868112] [2024-06-21 19:04:25,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121868112] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:04:25,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:04:25,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:04:25,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459204752] [2024-06-21 19:04:25,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:04:25,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:04:25,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:04:25,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:04:25,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:04:25,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:04:25,760 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) [2024-06-21 19:04:25,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:04:25,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:04:25,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:04:26,191 INFO L124 PetriNetUnfolderBase]: 619/1107 cut-off events. [2024-06-21 19:04:26,191 INFO L125 PetriNetUnfolderBase]: For 100927/100927 co-relation queries the response was YES. [2024-06-21 19:04:26,199 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. [2024-06-21 19:04:26,203 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 279 selfloop transitions, 18 changer transitions 0/299 dead transitions. [2024-06-21 19:04:26,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 299 transitions, 5023 flow [2024-06-21 19:04:26,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:04:26,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:04:26,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 96 transitions. [2024-06-21 19:04:26,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3096774193548387 [2024-06-21 19:04:26,204 INFO L175 Difference]: Start difference. First operand has 335 places, 288 transitions, 4369 flow. Second operand 10 states and 96 transitions. [2024-06-21 19:04:26,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 299 transitions, 5023 flow [2024-06-21 19:04:26,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 299 transitions, 4782 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-21 19:04:26,560 INFO L231 Difference]: Finished difference. Result has 339 places, 290 transitions, 4213 flow [2024-06-21 19:04:26,560 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} [2024-06-21 19:04:26,560 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 309 predicate places. [2024-06-21 19:04:26,560 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 290 transitions, 4213 flow [2024-06-21 19:04:26,560 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) [2024-06-21 19:04:26,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:04:26,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:04:26,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-21 19:04:26,561 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)] === [2024-06-21 19:04:26,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:04:26,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1599390111, now seen corresponding path program 13 times [2024-06-21 19:04:26,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:04:26,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652101598] [2024-06-21 19:04:26,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:04:26,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:04:26,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:04:27,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:04:27,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:04:27,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652101598] [2024-06-21 19:04:27,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652101598] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:04:27,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:04:27,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:04:27,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309147775] [2024-06-21 19:04:27,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:04:27,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:04:27,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:04:27,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:04:27,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:04:27,853 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:04:27,853 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) [2024-06-21 19:04:27,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:04:27,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:04:27,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:04:28,210 INFO L124 PetriNetUnfolderBase]: 627/1118 cut-off events. [2024-06-21 19:04:28,210 INFO L125 PetriNetUnfolderBase]: For 106045/106045 co-relation queries the response was YES. [2024-06-21 19:04:28,219 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. [2024-06-21 19:04:28,223 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 177 selfloop transitions, 127 changer transitions 0/306 dead transitions. [2024-06-21 19:04:28,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 306 transitions, 5450 flow [2024-06-21 19:04:28,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:04:28,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:04:28,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-21 19:04:28,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3942652329749104 [2024-06-21 19:04:28,224 INFO L175 Difference]: Start difference. First operand has 339 places, 290 transitions, 4213 flow. Second operand 9 states and 110 transitions. [2024-06-21 19:04:28,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 306 transitions, 5450 flow [2024-06-21 19:04:28,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 306 transitions, 5389 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-21 19:04:28,613 INFO L231 Difference]: Finished difference. Result has 340 places, 295 transitions, 4525 flow [2024-06-21 19:04:28,613 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} [2024-06-21 19:04:28,613 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 310 predicate places. [2024-06-21 19:04:28,614 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 295 transitions, 4525 flow [2024-06-21 19:04:28,614 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) [2024-06-21 19:04:28,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:04:28,614 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:04:28,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-21 19:04:28,614 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)] === [2024-06-21 19:04:28,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:04:28,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1176292163, now seen corresponding path program 14 times [2024-06-21 19:04:28,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:04:28,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949758440] [2024-06-21 19:04:28,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:04:28,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:04:28,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:04:29,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:04:29,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:04:29,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949758440] [2024-06-21 19:04:29,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949758440] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:04:29,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:04:29,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:04:29,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726692046] [2024-06-21 19:04:29,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:04:29,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:04:29,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:04:29,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:04:29,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:04:29,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:04:29,992 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) [2024-06-21 19:04:29,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:04:29,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:04:29,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:04:30,423 INFO L124 PetriNetUnfolderBase]: 633/1128 cut-off events. [2024-06-21 19:04:30,424 INFO L125 PetriNetUnfolderBase]: For 110007/110007 co-relation queries the response was YES. [2024-06-21 19:04:30,432 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. [2024-06-21 19:04:30,436 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 189 selfloop transitions, 117 changer transitions 0/308 dead transitions. [2024-06-21 19:04:30,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 308 transitions, 5397 flow [2024-06-21 19:04:30,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:04:30,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:04:30,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-21 19:04:30,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835125448028674 [2024-06-21 19:04:30,438 INFO L175 Difference]: Start difference. First operand has 340 places, 295 transitions, 4525 flow. Second operand 9 states and 107 transitions. [2024-06-21 19:04:30,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 308 transitions, 5397 flow [2024-06-21 19:04:30,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 308 transitions, 5140 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-21 19:04:30,761 INFO L231 Difference]: Finished difference. Result has 344 places, 299 transitions, 4592 flow [2024-06-21 19:04:30,761 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} [2024-06-21 19:04:30,761 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 314 predicate places. [2024-06-21 19:04:30,761 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 299 transitions, 4592 flow [2024-06-21 19:04:30,761 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) [2024-06-21 19:04:30,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:04:30,762 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:04:30,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-21 19:04:30,762 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)] === [2024-06-21 19:04:30,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:04:30,762 INFO L85 PathProgramCache]: Analyzing trace with hash 924973207, now seen corresponding path program 3 times [2024-06-21 19:04:30,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:04:30,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981018720] [2024-06-21 19:04:30,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:04:30,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:04:30,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:04:31,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:04:31,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:04:31,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981018720] [2024-06-21 19:04:31,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981018720] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:04:31,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:04:31,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:04:31,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159318355] [2024-06-21 19:04:31,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:04:31,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:04:31,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:04:31,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:04:31,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:04:31,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:04:31,992 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) [2024-06-21 19:04:31,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:04:31,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:04:31,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:04:32,292 INFO L124 PetriNetUnfolderBase]: 644/1147 cut-off events. [2024-06-21 19:04:32,292 INFO L125 PetriNetUnfolderBase]: For 116031/116031 co-relation queries the response was YES. [2024-06-21 19:04:32,301 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. [2024-06-21 19:04:32,304 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 206 selfloop transitions, 107 changer transitions 0/315 dead transitions. [2024-06-21 19:04:32,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 315 transitions, 5830 flow [2024-06-21 19:04:32,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:04:32,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:04:32,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-21 19:04:32,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43010752688172044 [2024-06-21 19:04:32,305 INFO L175 Difference]: Start difference. First operand has 344 places, 299 transitions, 4592 flow. Second operand 9 states and 120 transitions. [2024-06-21 19:04:32,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 315 transitions, 5830 flow [2024-06-21 19:04:32,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 315 transitions, 5563 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-06-21 19:04:32,647 INFO L231 Difference]: Finished difference. Result has 346 places, 302 transitions, 4622 flow [2024-06-21 19:04:32,648 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} [2024-06-21 19:04:32,648 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 316 predicate places. [2024-06-21 19:04:32,648 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 302 transitions, 4622 flow [2024-06-21 19:04:32,648 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) [2024-06-21 19:04:32,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:04:32,649 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:04:32,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-21 19:04:32,649 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)] === [2024-06-21 19:04:32,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:04:32,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1170785633, now seen corresponding path program 15 times [2024-06-21 19:04:32,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:04:32,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302632205] [2024-06-21 19:04:32,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:04:32,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:04:32,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:04:34,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:04:34,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:04:34,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302632205] [2024-06-21 19:04:34,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302632205] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:04:34,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:04:34,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:04:34,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449235626] [2024-06-21 19:04:34,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:04:34,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:04:34,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:04:34,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:04:34,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:04:34,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:04:34,244 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) [2024-06-21 19:04:34,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:04:34,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:04:34,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:04:34,677 INFO L124 PetriNetUnfolderBase]: 642/1144 cut-off events. [2024-06-21 19:04:34,677 INFO L125 PetriNetUnfolderBase]: For 106423/106423 co-relation queries the response was YES. [2024-06-21 19:04:34,686 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. [2024-06-21 19:04:34,690 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 195 selfloop transitions, 114 changer transitions 0/311 dead transitions. [2024-06-21 19:04:34,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 311 transitions, 5426 flow [2024-06-21 19:04:34,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:04:34,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:04:34,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-21 19:04:34,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3942652329749104 [2024-06-21 19:04:34,691 INFO L175 Difference]: Start difference. First operand has 346 places, 302 transitions, 4622 flow. Second operand 9 states and 110 transitions. [2024-06-21 19:04:34,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 311 transitions, 5426 flow [2024-06-21 19:04:35,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 311 transitions, 5125 flow, removed 47 selfloop flow, removed 7 redundant places. [2024-06-21 19:04:35,040 INFO L231 Difference]: Finished difference. Result has 348 places, 302 transitions, 4556 flow [2024-06-21 19:04:35,041 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} [2024-06-21 19:04:35,041 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 318 predicate places. [2024-06-21 19:04:35,042 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 302 transitions, 4556 flow [2024-06-21 19:04:35,042 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) [2024-06-21 19:04:35,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:04:35,042 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:04:35,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-21 19:04:35,042 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)] === [2024-06-21 19:04:35,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:04:35,042 INFO L85 PathProgramCache]: Analyzing trace with hash -969481057, now seen corresponding path program 4 times [2024-06-21 19:04:35,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:04:35,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267358785] [2024-06-21 19:04:35,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:04:35,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:04:35,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:04:36,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:04:36,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:04:36,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267358785] [2024-06-21 19:04:36,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267358785] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:04:36,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:04:36,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:04:36,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823292076] [2024-06-21 19:04:36,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:04:36,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:04:36,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:04:36,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:04:36,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:04:36,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:04:36,562 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) [2024-06-21 19:04:36,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:04:36,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:04:36,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:04:36,955 INFO L124 PetriNetUnfolderBase]: 653/1163 cut-off events. [2024-06-21 19:04:36,955 INFO L125 PetriNetUnfolderBase]: For 115397/115397 co-relation queries the response was YES. [2024-06-21 19:04:36,964 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. [2024-06-21 19:04:36,968 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 183 selfloop transitions, 132 changer transitions 0/317 dead transitions. [2024-06-21 19:04:36,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 317 transitions, 5640 flow [2024-06-21 19:04:36,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:04:36,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:04:36,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-21 19:04:36,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-21 19:04:36,969 INFO L175 Difference]: Start difference. First operand has 348 places, 302 transitions, 4556 flow. Second operand 10 states and 125 transitions. [2024-06-21 19:04:36,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 317 transitions, 5640 flow [2024-06-21 19:04:37,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 317 transitions, 5396 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-21 19:04:37,343 INFO L231 Difference]: Finished difference. Result has 349 places, 305 transitions, 4661 flow [2024-06-21 19:04:37,353 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} [2024-06-21 19:04:37,354 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 319 predicate places. [2024-06-21 19:04:37,354 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 305 transitions, 4661 flow [2024-06-21 19:04:37,354 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) [2024-06-21 19:04:37,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:04:37,354 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:04:37,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-21 19:04:37,355 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)] === [2024-06-21 19:04:37,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:04:37,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1170779836, now seen corresponding path program 11 times [2024-06-21 19:04:37,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:04:37,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597518133] [2024-06-21 19:04:37,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:04:37,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:04:37,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:04:38,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:04:38,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:04:38,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597518133] [2024-06-21 19:04:38,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597518133] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:04:38,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:04:38,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:04:38,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633547830] [2024-06-21 19:04:38,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:04:38,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:04:38,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:04:38,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:04:38,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:04:38,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:04:38,689 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) [2024-06-21 19:04:38,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:04:38,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:04:38,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:04:39,091 INFO L124 PetriNetUnfolderBase]: 656/1168 cut-off events. [2024-06-21 19:04:39,092 INFO L125 PetriNetUnfolderBase]: For 109975/109975 co-relation queries the response was YES. [2024-06-21 19:04:39,100 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. [2024-06-21 19:04:39,104 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 213 selfloop transitions, 104 changer transitions 0/319 dead transitions. [2024-06-21 19:04:39,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 319 transitions, 5867 flow [2024-06-21 19:04:39,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:04:39,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:04:39,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-21 19:04:39,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43010752688172044 [2024-06-21 19:04:39,105 INFO L175 Difference]: Start difference. First operand has 349 places, 305 transitions, 4661 flow. Second operand 9 states and 120 transitions. [2024-06-21 19:04:39,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 319 transitions, 5867 flow [2024-06-21 19:04:39,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 319 transitions, 5532 flow, removed 32 selfloop flow, removed 8 redundant places. [2024-06-21 19:04:39,487 INFO L231 Difference]: Finished difference. Result has 350 places, 307 transitions, 4581 flow [2024-06-21 19:04:39,488 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} [2024-06-21 19:04:39,488 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 320 predicate places. [2024-06-21 19:04:39,488 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 307 transitions, 4581 flow [2024-06-21 19:04:39,488 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) [2024-06-21 19:04:39,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:04:39,488 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:04:39,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-21 19:04:39,489 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)] === [2024-06-21 19:04:39,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:04:39,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1865421757, now seen corresponding path program 5 times [2024-06-21 19:04:39,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:04:39,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49329595] [2024-06-21 19:04:39,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:04:39,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:04:39,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:04:40,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:04:40,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:04:40,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49329595] [2024-06-21 19:04:40,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49329595] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:04:40,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:04:40,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:04:40,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616059691] [2024-06-21 19:04:40,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:04:40,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:04:40,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:04:40,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:04:40,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:04:40,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:04:40,845 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) [2024-06-21 19:04:40,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:04:40,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:04:40,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:04:41,250 INFO L124 PetriNetUnfolderBase]: 669/1191 cut-off events. [2024-06-21 19:04:41,250 INFO L125 PetriNetUnfolderBase]: For 119223/119223 co-relation queries the response was YES. [2024-06-21 19:04:41,259 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. [2024-06-21 19:04:41,263 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 298 selfloop transitions, 24 changer transitions 0/324 dead transitions. [2024-06-21 19:04:41,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 324 transitions, 5559 flow [2024-06-21 19:04:41,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:04:41,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:04:41,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 109 transitions. [2024-06-21 19:04:41,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3196480938416422 [2024-06-21 19:04:41,264 INFO L175 Difference]: Start difference. First operand has 350 places, 307 transitions, 4581 flow. Second operand 11 states and 109 transitions. [2024-06-21 19:04:41,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 324 transitions, 5559 flow [2024-06-21 19:04:41,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 324 transitions, 5338 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-21 19:04:41,675 INFO L231 Difference]: Finished difference. Result has 356 places, 312 transitions, 4541 flow [2024-06-21 19:04:41,676 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} [2024-06-21 19:04:41,676 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 326 predicate places. [2024-06-21 19:04:41,676 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 312 transitions, 4541 flow [2024-06-21 19:04:41,676 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) [2024-06-21 19:04:41,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:04:41,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:04:41,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-21 19:04:41,677 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)] === [2024-06-21 19:04:41,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:04:41,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1176142216, now seen corresponding path program 12 times [2024-06-21 19:04:41,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:04:41,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875546096] [2024-06-21 19:04:41,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:04:41,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:04:41,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:04:42,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:04:42,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:04:42,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875546096] [2024-06-21 19:04:42,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875546096] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:04:42,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:04:42,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:04:42,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373370550] [2024-06-21 19:04:42,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:04:42,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:04:42,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:04:42,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:04:42,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:04:42,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:04:42,766 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) [2024-06-21 19:04:42,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:04:42,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:04:42,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:04:43,149 INFO L124 PetriNetUnfolderBase]: 665/1182 cut-off events. [2024-06-21 19:04:43,149 INFO L125 PetriNetUnfolderBase]: For 117079/117079 co-relation queries the response was YES. [2024-06-21 19:04:43,158 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. [2024-06-21 19:04:43,162 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 211 selfloop transitions, 110 changer transitions 0/323 dead transitions. [2024-06-21 19:04:43,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 323 transitions, 5551 flow [2024-06-21 19:04:43,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:04:43,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:04:43,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-21 19:04:43,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4157706093189964 [2024-06-21 19:04:43,164 INFO L175 Difference]: Start difference. First operand has 356 places, 312 transitions, 4541 flow. Second operand 9 states and 116 transitions. [2024-06-21 19:04:43,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 323 transitions, 5551 flow [2024-06-21 19:04:43,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 323 transitions, 5457 flow, removed 35 selfloop flow, removed 7 redundant places. [2024-06-21 19:04:43,591 INFO L231 Difference]: Finished difference. Result has 358 places, 312 transitions, 4672 flow [2024-06-21 19:04:43,592 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} [2024-06-21 19:04:43,592 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 328 predicate places. [2024-06-21 19:04:43,592 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 312 transitions, 4672 flow [2024-06-21 19:04:43,592 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) [2024-06-21 19:04:43,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:04:43,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:04:43,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-21 19:04:43,593 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)] === [2024-06-21 19:04:43,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:04:43,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1865095327, now seen corresponding path program 6 times [2024-06-21 19:04:43,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:04:43,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905031459] [2024-06-21 19:04:43,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:04:43,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:04:43,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:04:45,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:04:45,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:04:45,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905031459] [2024-06-21 19:04:45,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905031459] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:04:45,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:04:45,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:04:45,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738931659] [2024-06-21 19:04:45,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:04:45,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:04:45,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:04:45,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:04:45,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:04:45,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:04:45,174 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) [2024-06-21 19:04:45,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:04:45,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:04:45,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:04:45,588 INFO L124 PetriNetUnfolderBase]: 663/1181 cut-off events. [2024-06-21 19:04:45,588 INFO L125 PetriNetUnfolderBase]: For 116501/116501 co-relation queries the response was YES. [2024-06-21 19:04:45,597 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. [2024-06-21 19:04:45,601 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 302 selfloop transitions, 18 changer transitions 0/322 dead transitions. [2024-06-21 19:04:45,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 322 transitions, 5347 flow [2024-06-21 19:04:45,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:04:45,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:04:45,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 101 transitions. [2024-06-21 19:04:45,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2961876832844575 [2024-06-21 19:04:45,602 INFO L175 Difference]: Start difference. First operand has 358 places, 312 transitions, 4672 flow. Second operand 11 states and 101 transitions. [2024-06-21 19:04:45,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 322 transitions, 5347 flow [2024-06-21 19:04:46,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 322 transitions, 5125 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-21 19:04:46,048 INFO L231 Difference]: Finished difference. Result has 360 places, 313 transitions, 4508 flow [2024-06-21 19:04:46,048 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} [2024-06-21 19:04:46,048 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 330 predicate places. [2024-06-21 19:04:46,048 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 313 transitions, 4508 flow [2024-06-21 19:04:46,049 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) [2024-06-21 19:04:46,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:04:46,049 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:04:46,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-21 19:04:46,049 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)] === [2024-06-21 19:04:46,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:04:46,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1599182721, now seen corresponding path program 16 times [2024-06-21 19:04:46,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:04:46,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461535758] [2024-06-21 19:04:46,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:04:46,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:04:46,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:04:47,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:04:47,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:04:47,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461535758] [2024-06-21 19:04:47,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461535758] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:04:47,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:04:47,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:04:47,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977596126] [2024-06-21 19:04:47,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:04:47,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:04:47,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:04:47,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:04:47,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:04:47,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:04:47,534 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) [2024-06-21 19:04:47,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:04:47,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:04:47,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:04:47,970 INFO L124 PetriNetUnfolderBase]: 661/1176 cut-off events. [2024-06-21 19:04:47,971 INFO L125 PetriNetUnfolderBase]: For 114064/114064 co-relation queries the response was YES. [2024-06-21 19:04:47,980 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. [2024-06-21 19:04:47,985 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 189 selfloop transitions, 131 changer transitions 0/322 dead transitions. [2024-06-21 19:04:47,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 322 transitions, 5344 flow [2024-06-21 19:04:47,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:04:47,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:04:47,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-21 19:04:47,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37992831541218636 [2024-06-21 19:04:47,986 INFO L175 Difference]: Start difference. First operand has 360 places, 313 transitions, 4508 flow. Second operand 9 states and 106 transitions. [2024-06-21 19:04:47,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 322 transitions, 5344 flow [2024-06-21 19:04:48,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 322 transitions, 5241 flow, removed 35 selfloop flow, removed 9 redundant places. [2024-06-21 19:04:48,399 INFO L231 Difference]: Finished difference. Result has 360 places, 313 transitions, 4674 flow [2024-06-21 19:04:48,399 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} [2024-06-21 19:04:48,400 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 330 predicate places. [2024-06-21 19:04:48,400 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 313 transitions, 4674 flow [2024-06-21 19:04:48,400 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) [2024-06-21 19:04:48,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:04:48,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:04:48,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-21 19:04:48,401 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)] === [2024-06-21 19:04:48,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:04:48,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1599188518, now seen corresponding path program 13 times [2024-06-21 19:04:48,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:04:48,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292794504] [2024-06-21 19:04:48,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:04:48,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:04:48,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:04:49,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:04:49,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:04:49,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292794504] [2024-06-21 19:04:49,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292794504] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:04:49,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:04:49,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:04:49,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131037659] [2024-06-21 19:04:49,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:04:49,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:04:49,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:04:49,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:04:49,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:04:49,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:04:49,431 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) [2024-06-21 19:04:49,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:04:49,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:04:49,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:04:49,782 INFO L124 PetriNetUnfolderBase]: 657/1169 cut-off events. [2024-06-21 19:04:49,783 INFO L125 PetriNetUnfolderBase]: For 112981/112981 co-relation queries the response was YES. [2024-06-21 19:04:49,792 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. [2024-06-21 19:04:49,795 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 204 selfloop transitions, 118 changer transitions 0/324 dead transitions. [2024-06-21 19:04:49,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 324 transitions, 5698 flow [2024-06-21 19:04:49,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:04:49,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:04:49,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-21 19:04:49,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4157706093189964 [2024-06-21 19:04:49,797 INFO L175 Difference]: Start difference. First operand has 360 places, 313 transitions, 4674 flow. Second operand 9 states and 116 transitions. [2024-06-21 19:04:49,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 324 transitions, 5698 flow [2024-06-21 19:04:50,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 324 transitions, 5412 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-21 19:04:50,223 INFO L231 Difference]: Finished difference. Result has 361 places, 313 transitions, 4633 flow [2024-06-21 19:04:50,223 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} [2024-06-21 19:04:50,223 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 331 predicate places. [2024-06-21 19:04:50,223 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 313 transitions, 4633 flow [2024-06-21 19:04:50,223 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) [2024-06-21 19:04:50,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:04:50,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:04:50,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-21 19:04:50,224 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)] === [2024-06-21 19:04:50,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:04:50,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1855898278, now seen corresponding path program 14 times [2024-06-21 19:04:50,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:04:50,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351303638] [2024-06-21 19:04:50,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:04:50,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:04:50,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:04:51,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:04:51,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:04:51,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351303638] [2024-06-21 19:04:51,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351303638] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:04:51,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:04:51,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:04:51,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772548977] [2024-06-21 19:04:51,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:04:51,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:04:51,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:04:51,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:04:51,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:04:51,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:04:51,275 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) [2024-06-21 19:04:51,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:04:51,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:04:51,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:04:51,666 INFO L124 PetriNetUnfolderBase]: 660/1174 cut-off events. [2024-06-21 19:04:51,666 INFO L125 PetriNetUnfolderBase]: For 112954/112954 co-relation queries the response was YES. [2024-06-21 19:04:51,675 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. [2024-06-21 19:04:51,679 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 191 selfloop transitions, 133 changer transitions 0/326 dead transitions. [2024-06-21 19:04:51,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 326 transitions, 5705 flow [2024-06-21 19:04:51,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:04:51,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:04:51,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-21 19:04:51,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-21 19:04:51,681 INFO L175 Difference]: Start difference. First operand has 361 places, 313 transitions, 4633 flow. Second operand 9 states and 117 transitions. [2024-06-21 19:04:51,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 326 transitions, 5705 flow [2024-06-21 19:04:52,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 326 transitions, 5434 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-21 19:04:52,127 INFO L231 Difference]: Finished difference. Result has 361 places, 315 transitions, 4677 flow [2024-06-21 19:04:52,128 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} [2024-06-21 19:04:52,128 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 331 predicate places. [2024-06-21 19:04:52,128 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 315 transitions, 4677 flow [2024-06-21 19:04:52,128 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) [2024-06-21 19:04:52,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:04:52,128 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:04:52,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-21 19:04:52,129 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)] === [2024-06-21 19:04:52,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:04:52,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1855890621, now seen corresponding path program 17 times [2024-06-21 19:04:52,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:04:52,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724123428] [2024-06-21 19:04:52,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:04:52,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:04:52,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:04:53,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:04:53,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:04:53,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724123428] [2024-06-21 19:04:53,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724123428] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:04:53,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:04:53,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:04:53,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127607379] [2024-06-21 19:04:53,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:04:53,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:04:53,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:04:53,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:04:53,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:04:53,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:04:53,524 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) [2024-06-21 19:04:53,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:04:53,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:04:53,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:04:53,853 INFO L124 PetriNetUnfolderBase]: 658/1171 cut-off events. [2024-06-21 19:04:53,853 INFO L125 PetriNetUnfolderBase]: For 111221/111221 co-relation queries the response was YES. [2024-06-21 19:04:53,863 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. [2024-06-21 19:04:53,867 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 166 selfloop transitions, 155 changer transitions 0/323 dead transitions. [2024-06-21 19:04:53,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 323 transitions, 5337 flow [2024-06-21 19:04:53,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:04:53,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:04:53,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-21 19:04:53,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3727598566308244 [2024-06-21 19:04:53,868 INFO L175 Difference]: Start difference. First operand has 361 places, 315 transitions, 4677 flow. Second operand 9 states and 104 transitions. [2024-06-21 19:04:53,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 323 transitions, 5337 flow [2024-06-21 19:04:54,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 323 transitions, 5009 flow, removed 32 selfloop flow, removed 7 redundant places. [2024-06-21 19:04:54,314 INFO L231 Difference]: Finished difference. Result has 363 places, 315 transitions, 4665 flow [2024-06-21 19:04:54,317 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} [2024-06-21 19:04:54,317 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 333 predicate places. [2024-06-21 19:04:54,318 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 315 transitions, 4665 flow [2024-06-21 19:04:54,318 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) [2024-06-21 19:04:54,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:04:54,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:04:54,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-21 19:04:54,318 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)] === [2024-06-21 19:04:54,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:04:54,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1855890838, now seen corresponding path program 15 times [2024-06-21 19:04:54,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:04:54,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169410425] [2024-06-21 19:04:54,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:04:54,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:04:54,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:04:55,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:04:55,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:04:55,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169410425] [2024-06-21 19:04:55,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169410425] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:04:55,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:04:55,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:04:55,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630786010] [2024-06-21 19:04:55,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:04:55,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:04:55,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:04:55,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:04:55,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:04:55,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:04:55,337 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) [2024-06-21 19:04:55,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:04:55,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:04:55,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:04:55,676 INFO L124 PetriNetUnfolderBase]: 654/1164 cut-off events. [2024-06-21 19:04:55,676 INFO L125 PetriNetUnfolderBase]: For 108995/108995 co-relation queries the response was YES. [2024-06-21 19:04:55,686 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. [2024-06-21 19:04:55,690 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 189 selfloop transitions, 134 changer transitions 0/325 dead transitions. [2024-06-21 19:04:55,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 325 transitions, 5515 flow [2024-06-21 19:04:55,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:04:55,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:04:55,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-21 19:04:55,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4121863799283154 [2024-06-21 19:04:55,691 INFO L175 Difference]: Start difference. First operand has 363 places, 315 transitions, 4665 flow. Second operand 9 states and 115 transitions. [2024-06-21 19:04:55,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 325 transitions, 5515 flow [2024-06-21 19:04:56,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 325 transitions, 5235 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-21 19:04:56,152 INFO L231 Difference]: Finished difference. Result has 365 places, 315 transitions, 4660 flow [2024-06-21 19:04:56,152 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} [2024-06-21 19:04:56,152 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 335 predicate places. [2024-06-21 19:04:56,152 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 315 transitions, 4660 flow [2024-06-21 19:04:56,153 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) [2024-06-21 19:04:56,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:04:56,153 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:04:56,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-21 19:04:56,153 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)] === [2024-06-21 19:04:56,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:04:56,153 INFO L85 PathProgramCache]: Analyzing trace with hash 738158287, now seen corresponding path program 1 times [2024-06-21 19:04:56,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:04:56,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959956084] [2024-06-21 19:04:56,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:04:56,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:04:56,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:04:57,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:04:57,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:04:57,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959956084] [2024-06-21 19:04:57,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959956084] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:04:57,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:04:57,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:04:57,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677755040] [2024-06-21 19:04:57,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:04:57,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:04:57,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:04:57,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:04:57,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:04:57,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:04:57,339 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) [2024-06-21 19:04:57,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:04:57,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:04:57,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:04:57,737 INFO L124 PetriNetUnfolderBase]: 671/1201 cut-off events. [2024-06-21 19:04:57,737 INFO L125 PetriNetUnfolderBase]: For 112721/112721 co-relation queries the response was YES. [2024-06-21 19:04:57,747 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. [2024-06-21 19:04:57,751 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 307 selfloop transitions, 30 changer transitions 0/339 dead transitions. [2024-06-21 19:04:57,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 339 transitions, 5453 flow [2024-06-21 19:04:57,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:04:57,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:04:57,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-06-21 19:04:57,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3313782991202346 [2024-06-21 19:04:57,753 INFO L175 Difference]: Start difference. First operand has 365 places, 315 transitions, 4660 flow. Second operand 11 states and 113 transitions. [2024-06-21 19:04:57,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 339 transitions, 5453 flow [2024-06-21 19:04:58,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 339 transitions, 5162 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-21 19:04:58,223 INFO L231 Difference]: Finished difference. Result has 370 places, 319 transitions, 4521 flow [2024-06-21 19:04:58,223 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} [2024-06-21 19:04:58,223 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 340 predicate places. [2024-06-21 19:04:58,223 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 319 transitions, 4521 flow [2024-06-21 19:04:58,224 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) [2024-06-21 19:04:58,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:04:58,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:04:58,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-21 19:04:58,224 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)] === [2024-06-21 19:04:58,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:04:58,236 INFO L85 PathProgramCache]: Analyzing trace with hash 341037173, now seen corresponding path program 2 times [2024-06-21 19:04:58,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:04:58,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199338752] [2024-06-21 19:04:58,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:04:58,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:04:58,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:04:59,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:04:59,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:04:59,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199338752] [2024-06-21 19:04:59,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199338752] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:04:59,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:04:59,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:04:59,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037539669] [2024-06-21 19:04:59,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:04:59,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:04:59,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:04:59,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:04:59,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:04:59,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-21 19:04:59,260 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) [2024-06-21 19:04:59,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:04:59,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-21 19:04:59,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:04:59,563 INFO L124 PetriNetUnfolderBase]: 610/1145 cut-off events. [2024-06-21 19:04:59,563 INFO L125 PetriNetUnfolderBase]: For 120032/120037 co-relation queries the response was YES. [2024-06-21 19:04:59,573 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. [2024-06-21 19:04:59,577 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 179 selfloop transitions, 60 changer transitions 0/337 dead transitions. [2024-06-21 19:04:59,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 337 transitions, 5130 flow [2024-06-21 19:04:59,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:04:59,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:04:59,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 108 transitions. [2024-06-21 19:04:59,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43548387096774194 [2024-06-21 19:04:59,578 INFO L175 Difference]: Start difference. First operand has 370 places, 319 transitions, 4521 flow. Second operand 8 states and 108 transitions. [2024-06-21 19:04:59,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 337 transitions, 5130 flow [2024-06-21 19:05:00,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 337 transitions, 4964 flow, removed 48 selfloop flow, removed 8 redundant places. [2024-06-21 19:05:00,039 INFO L231 Difference]: Finished difference. Result has 371 places, 323 transitions, 4622 flow [2024-06-21 19:05:00,040 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} [2024-06-21 19:05:00,040 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 341 predicate places. [2024-06-21 19:05:00,040 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 323 transitions, 4622 flow [2024-06-21 19:05:00,040 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) [2024-06-21 19:05:00,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:05:00,040 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:05:00,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-21 19:05:00,041 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)] === [2024-06-21 19:05:00,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:05:00,041 INFO L85 PathProgramCache]: Analyzing trace with hash -147706043, now seen corresponding path program 1 times [2024-06-21 19:05:00,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:05:00,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56872071] [2024-06-21 19:05:00,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:05:00,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:05:00,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:05:01,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:05:01,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:05:01,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56872071] [2024-06-21 19:05:01,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56872071] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:05:01,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:05:01,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:05:01,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139635634] [2024-06-21 19:05:01,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:05:01,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:05:01,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:05:01,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:05:01,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:05:01,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:05:01,526 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) [2024-06-21 19:05:01,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:05:01,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:05:01,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:05:01,963 INFO L124 PetriNetUnfolderBase]: 676/1212 cut-off events. [2024-06-21 19:05:01,963 INFO L125 PetriNetUnfolderBase]: For 110737/110737 co-relation queries the response was YES. [2024-06-21 19:05:01,974 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. [2024-06-21 19:05:01,977 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 266 selfloop transitions, 71 changer transitions 0/339 dead transitions. [2024-06-21 19:05:01,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 339 transitions, 5336 flow [2024-06-21 19:05:01,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:05:01,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:05:01,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-21 19:05:01,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3580645161290323 [2024-06-21 19:05:01,978 INFO L175 Difference]: Start difference. First operand has 371 places, 323 transitions, 4622 flow. Second operand 10 states and 111 transitions. [2024-06-21 19:05:01,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 339 transitions, 5336 flow [2024-06-21 19:05:02,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 339 transitions, 5202 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-06-21 19:05:02,460 INFO L231 Difference]: Finished difference. Result has 376 places, 323 transitions, 4643 flow [2024-06-21 19:05:02,460 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} [2024-06-21 19:05:02,460 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 346 predicate places. [2024-06-21 19:05:02,460 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 323 transitions, 4643 flow [2024-06-21 19:05:02,461 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) [2024-06-21 19:05:02,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:05:02,461 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:05:02,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-21 19:05:02,461 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)] === [2024-06-21 19:05:02,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:05:02,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1162810275, now seen corresponding path program 3 times [2024-06-21 19:05:02,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:05:02,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651230653] [2024-06-21 19:05:02,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:05:02,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:05:02,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:05:03,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:05:03,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:05:03,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651230653] [2024-06-21 19:05:03,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651230653] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:05:03,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:05:03,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:05:03,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975111027] [2024-06-21 19:05:03,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:05:03,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:05:03,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:05:03,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:05:03,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:05:03,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:05:03,684 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) [2024-06-21 19:05:03,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:05:03,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:05:03,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:05:04,054 INFO L124 PetriNetUnfolderBase]: 691/1241 cut-off events. [2024-06-21 19:05:04,054 INFO L125 PetriNetUnfolderBase]: For 128120/128120 co-relation queries the response was YES. [2024-06-21 19:05:04,065 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. [2024-06-21 19:05:04,068 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 307 selfloop transitions, 39 changer transitions 0/348 dead transitions. [2024-06-21 19:05:04,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 348 transitions, 5665 flow [2024-06-21 19:05:04,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:05:04,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:05:04,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 126 transitions. [2024-06-21 19:05:04,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-21 19:05:04,070 INFO L175 Difference]: Start difference. First operand has 376 places, 323 transitions, 4643 flow. Second operand 12 states and 126 transitions. [2024-06-21 19:05:04,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 348 transitions, 5665 flow [2024-06-21 19:05:04,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 348 transitions, 5593 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-21 19:05:04,663 INFO L231 Difference]: Finished difference. Result has 385 places, 327 transitions, 4756 flow [2024-06-21 19:05:04,663 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} [2024-06-21 19:05:04,663 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 355 predicate places. [2024-06-21 19:05:04,663 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 327 transitions, 4756 flow [2024-06-21 19:05:04,663 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) [2024-06-21 19:05:04,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:05:04,664 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:05:04,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-21 19:05:04,664 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)] === [2024-06-21 19:05:04,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:05:04,664 INFO L85 PathProgramCache]: Analyzing trace with hash 319969023, now seen corresponding path program 4 times [2024-06-21 19:05:04,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:05:04,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249650413] [2024-06-21 19:05:04,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:05:04,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:05:04,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:05:05,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:05:05,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:05:05,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249650413] [2024-06-21 19:05:05,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249650413] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:05:05,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:05:05,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:05:05,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737538080] [2024-06-21 19:05:05,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:05:05,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:05:05,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:05:05,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:05:05,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:05:05,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:05:05,902 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) [2024-06-21 19:05:05,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:05:05,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:05:05,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:05:06,322 INFO L124 PetriNetUnfolderBase]: 695/1249 cut-off events. [2024-06-21 19:05:06,323 INFO L125 PetriNetUnfolderBase]: For 131660/131660 co-relation queries the response was YES. [2024-06-21 19:05:06,334 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. [2024-06-21 19:05:06,338 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 304 selfloop transitions, 40 changer transitions 0/346 dead transitions. [2024-06-21 19:05:06,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 346 transitions, 5527 flow [2024-06-21 19:05:06,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:05:06,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:05:06,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 123 transitions. [2024-06-21 19:05:06,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33064516129032256 [2024-06-21 19:05:06,339 INFO L175 Difference]: Start difference. First operand has 385 places, 327 transitions, 4756 flow. Second operand 12 states and 123 transitions. [2024-06-21 19:05:06,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 346 transitions, 5527 flow [2024-06-21 19:05:06,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 346 transitions, 5410 flow, removed 36 selfloop flow, removed 6 redundant places. [2024-06-21 19:05:06,889 INFO L231 Difference]: Finished difference. Result has 391 places, 328 transitions, 4762 flow [2024-06-21 19:05:06,890 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} [2024-06-21 19:05:06,890 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 361 predicate places. [2024-06-21 19:05:06,890 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 328 transitions, 4762 flow [2024-06-21 19:05:06,890 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) [2024-06-21 19:05:06,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:05:06,890 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:05:06,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-21 19:05:06,891 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)] === [2024-06-21 19:05:06,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:05:06,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1406972907, now seen corresponding path program 5 times [2024-06-21 19:05:06,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:05:06,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471096948] [2024-06-21 19:05:06,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:05:06,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:05:06,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:05:08,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:05:08,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:05:08,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471096948] [2024-06-21 19:05:08,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471096948] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:05:08,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:05:08,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:05:08,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686767207] [2024-06-21 19:05:08,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:05:08,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:05:08,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:05:08,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:05:08,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:05:08,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:05:08,209 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) [2024-06-21 19:05:08,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:05:08,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:05:08,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:05:08,587 INFO L124 PetriNetUnfolderBase]: 719/1297 cut-off events. [2024-06-21 19:05:08,588 INFO L125 PetriNetUnfolderBase]: For 142904/142904 co-relation queries the response was YES. [2024-06-21 19:05:08,600 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. [2024-06-21 19:05:08,605 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 301 selfloop transitions, 49 changer transitions 0/352 dead transitions. [2024-06-21 19:05:08,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 352 transitions, 5848 flow [2024-06-21 19:05:08,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:05:08,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:05:08,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-21 19:05:08,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36129032258064514 [2024-06-21 19:05:08,606 INFO L175 Difference]: Start difference. First operand has 391 places, 328 transitions, 4762 flow. Second operand 10 states and 112 transitions. [2024-06-21 19:05:08,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 352 transitions, 5848 flow [2024-06-21 19:05:09,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 352 transitions, 5729 flow, removed 22 selfloop flow, removed 10 redundant places. [2024-06-21 19:05:09,143 INFO L231 Difference]: Finished difference. Result has 392 places, 334 transitions, 4919 flow [2024-06-21 19:05:09,143 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} [2024-06-21 19:05:09,143 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 362 predicate places. [2024-06-21 19:05:09,143 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 334 transitions, 4919 flow [2024-06-21 19:05:09,144 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) [2024-06-21 19:05:09,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:05:09,144 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:05:09,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-21 19:05:09,144 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)] === [2024-06-21 19:05:09,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:05:09,145 INFO L85 PathProgramCache]: Analyzing trace with hash 543640511, now seen corresponding path program 6 times [2024-06-21 19:05:09,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:05:09,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019104958] [2024-06-21 19:05:09,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:05:09,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:05:09,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:05:10,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:05:10,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:05:10,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019104958] [2024-06-21 19:05:10,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019104958] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:05:10,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:05:10,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:05:10,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519829326] [2024-06-21 19:05:10,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:05:10,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:05:10,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:05:10,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:05:10,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:05:10,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:05:10,593 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) [2024-06-21 19:05:10,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:05:10,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:05:10,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:05:11,030 INFO L124 PetriNetUnfolderBase]: 723/1306 cut-off events. [2024-06-21 19:05:11,031 INFO L125 PetriNetUnfolderBase]: For 138001/138001 co-relation queries the response was YES. [2024-06-21 19:05:11,046 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. [2024-06-21 19:05:11,050 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 316 selfloop transitions, 37 changer transitions 0/355 dead transitions. [2024-06-21 19:05:11,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 355 transitions, 5921 flow [2024-06-21 19:05:11,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:05:11,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:05:11,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-21 19:05:11,052 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34310850439882695 [2024-06-21 19:05:11,052 INFO L175 Difference]: Start difference. First operand has 392 places, 334 transitions, 4919 flow. Second operand 11 states and 117 transitions. [2024-06-21 19:05:11,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 355 transitions, 5921 flow [2024-06-21 19:05:11,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 355 transitions, 5802 flow, removed 42 selfloop flow, removed 6 redundant places. [2024-06-21 19:05:11,720 INFO L231 Difference]: Finished difference. Result has 398 places, 336 transitions, 4944 flow [2024-06-21 19:05:11,720 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} [2024-06-21 19:05:11,720 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 368 predicate places. [2024-06-21 19:05:11,720 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 336 transitions, 4944 flow [2024-06-21 19:05:11,720 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) [2024-06-21 19:05:11,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:05:11,721 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:05:11,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-21 19:05:11,721 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)] === [2024-06-21 19:05:11,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:05:11,721 INFO L85 PathProgramCache]: Analyzing trace with hash 686192027, now seen corresponding path program 2 times [2024-06-21 19:05:11,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:05:11,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156475991] [2024-06-21 19:05:11,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:05:11,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:05:11,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:05:13,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:05:13,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:05:13,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156475991] [2024-06-21 19:05:13,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156475991] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:05:13,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:05:13,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:05:13,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019921324] [2024-06-21 19:05:13,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:05:13,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:05:13,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:05:13,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:05:13,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:05:13,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-21 19:05:13,121 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) [2024-06-21 19:05:13,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:05:13,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-21 19:05:13,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:05:13,552 INFO L124 PetriNetUnfolderBase]: 721/1303 cut-off events. [2024-06-21 19:05:13,552 INFO L125 PetriNetUnfolderBase]: For 130267/130267 co-relation queries the response was YES. [2024-06-21 19:05:13,564 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. [2024-06-21 19:05:13,569 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 291 selfloop transitions, 55 changer transitions 0/349 dead transitions. [2024-06-21 19:05:13,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 349 transitions, 5668 flow [2024-06-21 19:05:13,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:05:13,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:05:13,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-21 19:05:13,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4229390681003584 [2024-06-21 19:05:13,570 INFO L175 Difference]: Start difference. First operand has 398 places, 336 transitions, 4944 flow. Second operand 9 states and 118 transitions. [2024-06-21 19:05:13,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 349 transitions, 5668 flow [2024-06-21 19:05:14,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 349 transitions, 5524 flow, removed 37 selfloop flow, removed 8 redundant places. [2024-06-21 19:05:14,238 INFO L231 Difference]: Finished difference. Result has 399 places, 336 transitions, 4921 flow [2024-06-21 19:05:14,238 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} [2024-06-21 19:05:14,238 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 369 predicate places. [2024-06-21 19:05:14,238 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 336 transitions, 4921 flow [2024-06-21 19:05:14,239 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) [2024-06-21 19:05:14,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:05:14,239 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:05:14,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-21 19:05:14,239 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)] === [2024-06-21 19:05:14,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:05:14,239 INFO L85 PathProgramCache]: Analyzing trace with hash 686186261, now seen corresponding path program 7 times [2024-06-21 19:05:14,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:05:14,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068248407] [2024-06-21 19:05:14,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:05:14,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:05:14,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:05:15,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:05:15,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:05:15,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068248407] [2024-06-21 19:05:15,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068248407] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:05:15,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:05:15,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:05:15,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159935736] [2024-06-21 19:05:15,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:05:15,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:05:15,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:05:15,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:05:15,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:05:15,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:05:15,715 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) [2024-06-21 19:05:15,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:05:15,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:05:15,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:05:16,126 INFO L124 PetriNetUnfolderBase]: 718/1298 cut-off events. [2024-06-21 19:05:16,126 INFO L125 PetriNetUnfolderBase]: For 126911/126911 co-relation queries the response was YES. [2024-06-21 19:05:16,139 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. [2024-06-21 19:05:16,143 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 314 selfloop transitions, 36 changer transitions 0/352 dead transitions. [2024-06-21 19:05:16,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 352 transitions, 5661 flow [2024-06-21 19:05:16,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:05:16,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:05:16,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-21 19:05:16,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-21 19:05:16,144 INFO L175 Difference]: Start difference. First operand has 399 places, 336 transitions, 4921 flow. Second operand 10 states and 109 transitions. [2024-06-21 19:05:16,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 352 transitions, 5661 flow [2024-06-21 19:05:16,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 352 transitions, 5403 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-06-21 19:05:16,732 INFO L231 Difference]: Finished difference. Result has 402 places, 336 transitions, 4739 flow [2024-06-21 19:05:16,732 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} [2024-06-21 19:05:16,732 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 372 predicate places. [2024-06-21 19:05:16,733 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 336 transitions, 4739 flow [2024-06-21 19:05:16,733 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) [2024-06-21 19:05:16,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:05:16,733 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:05:16,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-21 19:05:16,733 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)] === [2024-06-21 19:05:16,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:05:16,734 INFO L85 PathProgramCache]: Analyzing trace with hash -452079561, now seen corresponding path program 8 times [2024-06-21 19:05:16,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:05:16,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446320534] [2024-06-21 19:05:16,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:05:16,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:05:16,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:05:17,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:05:17,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:05:17,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446320534] [2024-06-21 19:05:17,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446320534] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:05:17,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:05:17,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:05:17,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726387411] [2024-06-21 19:05:17,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:05:17,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:05:17,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:05:17,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:05:17,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:05:17,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:05:17,889 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) [2024-06-21 19:05:17,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:05:17,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:05:17,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:05:18,282 INFO L124 PetriNetUnfolderBase]: 722/1305 cut-off events. [2024-06-21 19:05:18,283 INFO L125 PetriNetUnfolderBase]: For 128598/128598 co-relation queries the response was YES. [2024-06-21 19:05:18,295 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. [2024-06-21 19:05:18,300 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 329 selfloop transitions, 26 changer transitions 0/357 dead transitions. [2024-06-21 19:05:18,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 357 transitions, 5557 flow [2024-06-21 19:05:18,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:05:18,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:05:18,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-21 19:05:18,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-21 19:05:18,301 INFO L175 Difference]: Start difference. First operand has 402 places, 336 transitions, 4739 flow. Second operand 10 states and 109 transitions. [2024-06-21 19:05:18,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 357 transitions, 5557 flow [2024-06-21 19:05:18,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 357 transitions, 5487 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-21 19:05:18,894 INFO L231 Difference]: Finished difference. Result has 405 places, 338 transitions, 4791 flow [2024-06-21 19:05:18,895 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} [2024-06-21 19:05:18,895 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 375 predicate places. [2024-06-21 19:05:18,895 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 338 transitions, 4791 flow [2024-06-21 19:05:18,895 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) [2024-06-21 19:05:18,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:05:18,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:05:18,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-21 19:05:18,896 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)] === [2024-06-21 19:05:18,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:05:18,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1950082977, now seen corresponding path program 9 times [2024-06-21 19:05:18,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:05:18,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181585097] [2024-06-21 19:05:18,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:05:18,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:05:18,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:05:20,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:05:20,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:05:20,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181585097] [2024-06-21 19:05:20,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181585097] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:05:20,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:05:20,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:05:20,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917361030] [2024-06-21 19:05:20,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:05:20,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:05:20,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:05:20,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:05:20,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:05:20,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:05:20,311 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) [2024-06-21 19:05:20,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:05:20,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:05:20,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:05:20,767 INFO L124 PetriNetUnfolderBase]: 737/1334 cut-off events. [2024-06-21 19:05:20,767 INFO L125 PetriNetUnfolderBase]: For 142964/142964 co-relation queries the response was YES. [2024-06-21 19:05:20,780 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. [2024-06-21 19:05:20,784 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 324 selfloop transitions, 34 changer transitions 0/360 dead transitions. [2024-06-21 19:05:20,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 360 transitions, 5863 flow [2024-06-21 19:05:20,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:05:20,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:05:20,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-21 19:05:20,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36774193548387096 [2024-06-21 19:05:20,786 INFO L175 Difference]: Start difference. First operand has 405 places, 338 transitions, 4791 flow. Second operand 10 states and 114 transitions. [2024-06-21 19:05:20,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 360 transitions, 5863 flow [2024-06-21 19:05:21,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 360 transitions, 5759 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-06-21 19:05:21,392 INFO L231 Difference]: Finished difference. Result has 410 places, 342 transitions, 4882 flow [2024-06-21 19:05:21,392 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} [2024-06-21 19:05:21,392 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 380 predicate places. [2024-06-21 19:05:21,393 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 342 transitions, 4882 flow [2024-06-21 19:05:21,393 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) [2024-06-21 19:05:21,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:05:21,393 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:05:21,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-21 19:05:21,393 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)] === [2024-06-21 19:05:21,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:05:21,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1020531309, now seen corresponding path program 10 times [2024-06-21 19:05:21,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:05:21,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205600503] [2024-06-21 19:05:21,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:05:21,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:05:21,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:05:22,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:05:22,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:05:22,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205600503] [2024-06-21 19:05:22,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205600503] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:05:22,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:05:22,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:05:22,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470861264] [2024-06-21 19:05:22,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:05:22,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:05:22,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:05:22,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:05:22,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:05:22,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:05:22,788 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) [2024-06-21 19:05:22,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:05:22,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:05:22,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:05:23,263 INFO L124 PetriNetUnfolderBase]: 745/1350 cut-off events. [2024-06-21 19:05:23,263 INFO L125 PetriNetUnfolderBase]: For 157436/157436 co-relation queries the response was YES. [2024-06-21 19:05:23,275 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. [2024-06-21 19:05:23,279 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 318 selfloop transitions, 39 changer transitions 0/359 dead transitions. [2024-06-21 19:05:23,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 359 transitions, 5723 flow [2024-06-21 19:05:23,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:05:23,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:05:23,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-21 19:05:23,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3580645161290323 [2024-06-21 19:05:23,281 INFO L175 Difference]: Start difference. First operand has 410 places, 342 transitions, 4882 flow. Second operand 10 states and 111 transitions. [2024-06-21 19:05:23,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 359 transitions, 5723 flow [2024-06-21 19:05:23,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 359 transitions, 5607 flow, removed 44 selfloop flow, removed 4 redundant places. [2024-06-21 19:05:23,930 INFO L231 Difference]: Finished difference. Result has 416 places, 344 transitions, 4943 flow [2024-06-21 19:05:23,930 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} [2024-06-21 19:05:23,931 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 386 predicate places. [2024-06-21 19:05:23,931 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 344 transitions, 4943 flow [2024-06-21 19:05:23,931 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) [2024-06-21 19:05:23,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:05:23,931 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:05:23,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-21 19:05:23,931 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)] === [2024-06-21 19:05:23,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:05:23,932 INFO L85 PathProgramCache]: Analyzing trace with hash 940719539, now seen corresponding path program 11 times [2024-06-21 19:05:23,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:05:23,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866786973] [2024-06-21 19:05:23,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:05:23,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:05:23,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:05:25,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:05:25,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:05:25,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866786973] [2024-06-21 19:05:25,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866786973] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:05:25,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:05:25,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:05:25,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196048697] [2024-06-21 19:05:25,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:05:25,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:05:25,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:05:25,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:05:25,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:05:25,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:05:25,272 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) [2024-06-21 19:05:25,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:05:25,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:05:25,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:05:25,728 INFO L124 PetriNetUnfolderBase]: 750/1361 cut-off events. [2024-06-21 19:05:25,728 INFO L125 PetriNetUnfolderBase]: For 148947/148947 co-relation queries the response was YES. [2024-06-21 19:05:25,741 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. [2024-06-21 19:05:25,745 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 320 selfloop transitions, 40 changer transitions 0/362 dead transitions. [2024-06-21 19:05:25,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 362 transitions, 5753 flow [2024-06-21 19:05:25,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:05:25,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:05:25,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-21 19:05:25,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36129032258064514 [2024-06-21 19:05:25,746 INFO L175 Difference]: Start difference. First operand has 416 places, 344 transitions, 4943 flow. Second operand 10 states and 112 transitions. [2024-06-21 19:05:25,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 362 transitions, 5753 flow [2024-06-21 19:05:26,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 362 transitions, 5602 flow, removed 46 selfloop flow, removed 6 redundant places. [2024-06-21 19:05:26,368 INFO L231 Difference]: Finished difference. Result has 421 places, 346 transitions, 4940 flow [2024-06-21 19:05:26,368 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} [2024-06-21 19:05:26,368 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 391 predicate places. [2024-06-21 19:05:26,368 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 346 transitions, 4940 flow [2024-06-21 19:05:26,369 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) [2024-06-21 19:05:26,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:05:26,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:05:26,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-21 19:05:26,369 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)] === [2024-06-21 19:05:26,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:05:26,369 INFO L85 PathProgramCache]: Analyzing trace with hash -666916967, now seen corresponding path program 12 times [2024-06-21 19:05:26,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:05:26,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344379996] [2024-06-21 19:05:26,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:05:26,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:05:26,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:05:27,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:05:27,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:05:27,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344379996] [2024-06-21 19:05:27,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344379996] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:05:27,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:05:27,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:05:27,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695131227] [2024-06-21 19:05:27,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:05:27,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:05:27,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:05:27,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:05:27,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:05:27,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:05:27,742 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) [2024-06-21 19:05:27,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:05:27,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:05:27,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:05:28,176 INFO L124 PetriNetUnfolderBase]: 754/1369 cut-off events. [2024-06-21 19:05:28,176 INFO L125 PetriNetUnfolderBase]: For 140734/140734 co-relation queries the response was YES. [2024-06-21 19:05:28,189 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. [2024-06-21 19:05:28,193 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 330 selfloop transitions, 33 changer transitions 0/365 dead transitions. [2024-06-21 19:05:28,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 365 transitions, 5780 flow [2024-06-21 19:05:28,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:05:28,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:05:28,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-21 19:05:28,195 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36129032258064514 [2024-06-21 19:05:28,195 INFO L175 Difference]: Start difference. First operand has 421 places, 346 transitions, 4940 flow. Second operand 10 states and 112 transitions. [2024-06-21 19:05:28,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 365 transitions, 5780 flow [2024-06-21 19:05:28,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 365 transitions, 5657 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-21 19:05:28,826 INFO L231 Difference]: Finished difference. Result has 423 places, 348 transitions, 4969 flow [2024-06-21 19:05:28,827 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} [2024-06-21 19:05:28,827 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 393 predicate places. [2024-06-21 19:05:28,827 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 348 transitions, 4969 flow [2024-06-21 19:05:28,827 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) [2024-06-21 19:05:28,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:05:28,827 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:05:28,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-21 19:05:28,828 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)] === [2024-06-21 19:05:28,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:05:28,828 INFO L85 PathProgramCache]: Analyzing trace with hash 125989015, now seen corresponding path program 13 times [2024-06-21 19:05:28,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:05:28,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917294720] [2024-06-21 19:05:28,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:05:28,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:05:28,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:05:30,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:05:30,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:05:30,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917294720] [2024-06-21 19:05:30,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917294720] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:05:30,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:05:30,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:05:30,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746324939] [2024-06-21 19:05:30,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:05:30,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:05:30,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:05:30,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:05:30,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:05:30,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:05:30,338 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) [2024-06-21 19:05:30,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:05:30,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:05:30,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:05:30,758 INFO L124 PetriNetUnfolderBase]: 758/1377 cut-off events. [2024-06-21 19:05:30,758 INFO L125 PetriNetUnfolderBase]: For 143735/143735 co-relation queries the response was YES. [2024-06-21 19:05:30,771 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. [2024-06-21 19:05:30,775 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 297 selfloop transitions, 64 changer transitions 0/363 dead transitions. [2024-06-21 19:05:30,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 363 transitions, 5775 flow [2024-06-21 19:05:30,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:05:30,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:05:30,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-21 19:05:30,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-21 19:05:30,776 INFO L175 Difference]: Start difference. First operand has 423 places, 348 transitions, 4969 flow. Second operand 10 states and 115 transitions. [2024-06-21 19:05:30,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 363 transitions, 5775 flow [2024-06-21 19:05:31,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 363 transitions, 5643 flow, removed 37 selfloop flow, removed 6 redundant places. [2024-06-21 19:05:31,381 INFO L231 Difference]: Finished difference. Result has 427 places, 349 transitions, 5021 flow [2024-06-21 19:05:31,381 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} [2024-06-21 19:05:31,381 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 397 predicate places. [2024-06-21 19:05:31,382 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 349 transitions, 5021 flow [2024-06-21 19:05:31,382 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) [2024-06-21 19:05:31,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:05:31,382 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:05:31,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-21 19:05:31,382 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)] === [2024-06-21 19:05:31,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:05:31,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1536668323, now seen corresponding path program 14 times [2024-06-21 19:05:31,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:05:31,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844650642] [2024-06-21 19:05:31,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:05:31,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:05:31,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:05:32,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:05:32,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:05:32,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844650642] [2024-06-21 19:05:32,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844650642] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:05:32,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:05:32,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:05:32,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838787966] [2024-06-21 19:05:32,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:05:32,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:05:32,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:05:32,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:05:32,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:05:32,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:05:32,789 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) [2024-06-21 19:05:32,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:05:32,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:05:32,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:05:33,181 INFO L124 PetriNetUnfolderBase]: 766/1393 cut-off events. [2024-06-21 19:05:33,181 INFO L125 PetriNetUnfolderBase]: For 146522/146522 co-relation queries the response was YES. [2024-06-21 19:05:33,196 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. [2024-06-21 19:05:33,200 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 300 selfloop transitions, 64 changer transitions 0/366 dead transitions. [2024-06-21 19:05:33,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 366 transitions, 5841 flow [2024-06-21 19:05:33,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:05:33,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:05:33,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-21 19:05:33,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3741935483870968 [2024-06-21 19:05:33,202 INFO L175 Difference]: Start difference. First operand has 427 places, 349 transitions, 5021 flow. Second operand 10 states and 116 transitions. [2024-06-21 19:05:33,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 366 transitions, 5841 flow [2024-06-21 19:05:33,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 366 transitions, 5667 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-21 19:05:33,832 INFO L231 Difference]: Finished difference. Result has 430 places, 351 transitions, 5043 flow [2024-06-21 19:05:33,832 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} [2024-06-21 19:05:33,833 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 400 predicate places. [2024-06-21 19:05:33,833 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 351 transitions, 5043 flow [2024-06-21 19:05:33,834 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) [2024-06-21 19:05:33,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:05:33,834 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:05:33,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-21 19:05:33,834 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)] === [2024-06-21 19:05:33,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:05:33,835 INFO L85 PathProgramCache]: Analyzing trace with hash 121400395, now seen corresponding path program 15 times [2024-06-21 19:05:33,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:05:33,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638175987] [2024-06-21 19:05:33,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:05:33,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:05:33,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:05:35,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:05:35,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:05:35,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638175987] [2024-06-21 19:05:35,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638175987] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:05:35,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:05:35,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:05:35,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493446784] [2024-06-21 19:05:35,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:05:35,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:05:35,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:05:35,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:05:35,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:05:35,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:05:35,523 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) [2024-06-21 19:05:35,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:05:35,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:05:35,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:05:35,956 INFO L124 PetriNetUnfolderBase]: 781/1422 cut-off events. [2024-06-21 19:05:35,956 INFO L125 PetriNetUnfolderBase]: For 162117/162117 co-relation queries the response was YES. [2024-06-21 19:05:35,971 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. [2024-06-21 19:05:35,977 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 305 selfloop transitions, 65 changer transitions 0/372 dead transitions. [2024-06-21 19:05:35,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 372 transitions, 6177 flow [2024-06-21 19:05:35,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:05:35,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:05:35,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-21 19:05:35,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3741935483870968 [2024-06-21 19:05:35,978 INFO L175 Difference]: Start difference. First operand has 430 places, 351 transitions, 5043 flow. Second operand 10 states and 116 transitions. [2024-06-21 19:05:35,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 372 transitions, 6177 flow [2024-06-21 19:05:36,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 372 transitions, 6005 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-21 19:05:36,665 INFO L231 Difference]: Finished difference. Result has 435 places, 355 transitions, 5163 flow [2024-06-21 19:05:36,666 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} [2024-06-21 19:05:36,666 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 405 predicate places. [2024-06-21 19:05:36,666 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 355 transitions, 5163 flow [2024-06-21 19:05:36,666 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) [2024-06-21 19:05:36,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:05:36,667 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:05:36,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-21 19:05:36,667 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)] === [2024-06-21 19:05:36,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:05:36,667 INFO L85 PathProgramCache]: Analyzing trace with hash 298651885, now seen corresponding path program 16 times [2024-06-21 19:05:36,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:05:36,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992879746] [2024-06-21 19:05:36,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:05:36,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:05:36,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:05:38,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:05:38,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:05:38,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992879746] [2024-06-21 19:05:38,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992879746] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:05:38,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:05:38,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:05:38,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091521835] [2024-06-21 19:05:38,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:05:38,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:05:38,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:05:38,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:05:38,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:05:38,093 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:05:38,093 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) [2024-06-21 19:05:38,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:05:38,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:05:38,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:05:38,534 INFO L124 PetriNetUnfolderBase]: 785/1430 cut-off events. [2024-06-21 19:05:38,534 INFO L125 PetriNetUnfolderBase]: For 165742/165742 co-relation queries the response was YES. [2024-06-21 19:05:38,549 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. [2024-06-21 19:05:38,553 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 288 selfloop transitions, 80 changer transitions 0/370 dead transitions. [2024-06-21 19:05:38,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 370 transitions, 5990 flow [2024-06-21 19:05:38,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:05:38,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:05:38,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-21 19:05:38,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36451612903225805 [2024-06-21 19:05:38,555 INFO L175 Difference]: Start difference. First operand has 435 places, 355 transitions, 5163 flow. Second operand 10 states and 113 transitions. [2024-06-21 19:05:38,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 370 transitions, 5990 flow [2024-06-21 19:05:39,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 370 transitions, 5807 flow, removed 55 selfloop flow, removed 5 redundant places. [2024-06-21 19:05:39,254 INFO L231 Difference]: Finished difference. Result has 440 places, 356 transitions, 5203 flow [2024-06-21 19:05:39,254 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} [2024-06-21 19:05:39,254 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 410 predicate places. [2024-06-21 19:05:39,254 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 356 transitions, 5203 flow [2024-06-21 19:05:39,255 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) [2024-06-21 19:05:39,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:05:39,255 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:05:39,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-21 19:05:39,255 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)] === [2024-06-21 19:05:39,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:05:39,255 INFO L85 PathProgramCache]: Analyzing trace with hash 298889221, now seen corresponding path program 3 times [2024-06-21 19:05:39,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:05:39,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101634575] [2024-06-21 19:05:39,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:05:39,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:05:39,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:05:40,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:05:40,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:05:40,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101634575] [2024-06-21 19:05:40,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101634575] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:05:40,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:05:40,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:05:40,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280317843] [2024-06-21 19:05:40,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:05:40,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:05:40,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:05:40,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:05:40,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:05:40,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:05:40,586 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) [2024-06-21 19:05:40,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:05:40,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:05:40,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:05:40,974 INFO L124 PetriNetUnfolderBase]: 783/1427 cut-off events. [2024-06-21 19:05:40,974 INFO L125 PetriNetUnfolderBase]: For 153419/153419 co-relation queries the response was YES. [2024-06-21 19:05:40,989 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. [2024-06-21 19:05:40,994 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 235 selfloop transitions, 130 changer transitions 0/367 dead transitions. [2024-06-21 19:05:40,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 367 transitions, 5959 flow [2024-06-21 19:05:40,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:05:40,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:05:40,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-21 19:05:40,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4050179211469534 [2024-06-21 19:05:40,995 INFO L175 Difference]: Start difference. First operand has 440 places, 356 transitions, 5203 flow. Second operand 9 states and 113 transitions. [2024-06-21 19:05:40,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 367 transitions, 5959 flow [2024-06-21 19:05:41,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 367 transitions, 5741 flow, removed 30 selfloop flow, removed 8 redundant places. [2024-06-21 19:05:41,679 INFO L231 Difference]: Finished difference. Result has 441 places, 356 transitions, 5251 flow [2024-06-21 19:05:41,680 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} [2024-06-21 19:05:41,680 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 411 predicate places. [2024-06-21 19:05:41,680 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 356 transitions, 5251 flow [2024-06-21 19:05:41,680 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) [2024-06-21 19:05:41,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:05:41,680 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:05:41,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-21 19:05:41,681 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)] === [2024-06-21 19:05:41,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:05:41,681 INFO L85 PathProgramCache]: Analyzing trace with hash 969957259, now seen corresponding path program 1 times [2024-06-21 19:05:41,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:05:41,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740207276] [2024-06-21 19:05:41,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:05:41,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:05:41,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:05:42,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:05:42,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:05:42,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740207276] [2024-06-21 19:05:42,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740207276] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:05:42,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:05:42,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:05:42,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790620282] [2024-06-21 19:05:42,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:05:42,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:05:42,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:05:42,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:05:42,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:05:42,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:05:42,954 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) [2024-06-21 19:05:42,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:05:42,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:05:42,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:05:43,421 INFO L124 PetriNetUnfolderBase]: 803/1471 cut-off events. [2024-06-21 19:05:43,421 INFO L125 PetriNetUnfolderBase]: For 219619/219619 co-relation queries the response was YES. [2024-06-21 19:05:43,436 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. [2024-06-21 19:05:43,440 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 263 selfloop transitions, 98 changer transitions 12/375 dead transitions. [2024-06-21 19:05:43,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 375 transitions, 6161 flow [2024-06-21 19:05:43,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:05:43,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:05:43,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-21 19:05:43,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4096774193548387 [2024-06-21 19:05:43,442 INFO L175 Difference]: Start difference. First operand has 441 places, 356 transitions, 5251 flow. Second operand 10 states and 127 transitions. [2024-06-21 19:05:43,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 375 transitions, 6161 flow [2024-06-21 19:05:44,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 375 transitions, 5871 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-21 19:05:44,149 INFO L231 Difference]: Finished difference. Result has 441 places, 350 transitions, 5108 flow [2024-06-21 19:05:44,150 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} [2024-06-21 19:05:44,150 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 411 predicate places. [2024-06-21 19:05:44,150 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 350 transitions, 5108 flow [2024-06-21 19:05:44,150 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) [2024-06-21 19:05:44,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:05:44,150 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:05:44,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-21 19:05:44,151 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)] === [2024-06-21 19:05:44,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:05:44,151 INFO L85 PathProgramCache]: Analyzing trace with hash 298897839, now seen corresponding path program 1 times [2024-06-21 19:05:44,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:05:44,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508234003] [2024-06-21 19:05:44,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:05:44,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:05:44,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:05:45,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:05:45,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:05:45,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508234003] [2024-06-21 19:05:45,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508234003] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:05:45,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:05:45,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:05:45,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394441667] [2024-06-21 19:05:45,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:05:45,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:05:45,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:05:45,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:05:45,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:05:45,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:05:45,469 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) [2024-06-21 19:05:45,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:05:45,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:05:45,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:05:45,913 INFO L124 PetriNetUnfolderBase]: 775/1423 cut-off events. [2024-06-21 19:05:45,913 INFO L125 PetriNetUnfolderBase]: For 158072/158072 co-relation queries the response was YES. [2024-06-21 19:05:45,929 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. [2024-06-21 19:05:45,934 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 264 selfloop transitions, 99 changer transitions 0/365 dead transitions. [2024-06-21 19:05:45,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 365 transitions, 5938 flow [2024-06-21 19:05:45,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:05:45,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:05:45,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-21 19:05:45,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3935483870967742 [2024-06-21 19:05:45,935 INFO L175 Difference]: Start difference. First operand has 441 places, 350 transitions, 5108 flow. Second operand 10 states and 122 transitions. [2024-06-21 19:05:45,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 365 transitions, 5938 flow [2024-06-21 19:05:46,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 365 transitions, 5663 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-21 19:05:46,753 INFO L231 Difference]: Finished difference. Result has 442 places, 352 transitions, 5090 flow [2024-06-21 19:05:46,753 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} [2024-06-21 19:05:46,753 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 412 predicate places. [2024-06-21 19:05:46,753 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 352 transitions, 5090 flow [2024-06-21 19:05:46,754 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) [2024-06-21 19:05:46,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:05:46,754 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:05:46,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-21 19:05:46,754 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)] === [2024-06-21 19:05:46,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:05:46,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1669037353, now seen corresponding path program 17 times [2024-06-21 19:05:46,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:05:46,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167091526] [2024-06-21 19:05:46,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:05:46,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:05:46,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:05:48,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:05:48,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:05:48,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167091526] [2024-06-21 19:05:48,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167091526] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:05:48,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:05:48,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:05:48,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378936727] [2024-06-21 19:05:48,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:05:48,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:05:48,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:05:48,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:05:48,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:05:48,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:05:48,158 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) [2024-06-21 19:05:48,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:05:48,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:05:48,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:05:48,588 INFO L124 PetriNetUnfolderBase]: 779/1431 cut-off events. [2024-06-21 19:05:48,588 INFO L125 PetriNetUnfolderBase]: For 163495/163495 co-relation queries the response was YES. [2024-06-21 19:05:48,602 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. [2024-06-21 19:05:48,607 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 295 selfloop transitions, 72 changer transitions 0/369 dead transitions. [2024-06-21 19:05:48,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 369 transitions, 6127 flow [2024-06-21 19:05:48,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:05:48,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:05:48,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-21 19:05:48,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-21 19:05:48,608 INFO L175 Difference]: Start difference. First operand has 442 places, 352 transitions, 5090 flow. Second operand 10 states and 115 transitions. [2024-06-21 19:05:48,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 451 places, 369 transitions, 6127 flow [2024-06-21 19:05:49,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 369 transitions, 5888 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-21 19:05:49,329 INFO L231 Difference]: Finished difference. Result has 444 places, 353 transitions, 5042 flow [2024-06-21 19:05:49,329 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} [2024-06-21 19:05:49,329 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 414 predicate places. [2024-06-21 19:05:49,329 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 353 transitions, 5042 flow [2024-06-21 19:05:49,329 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) [2024-06-21 19:05:49,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:05:49,330 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:05:49,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-21 19:05:49,330 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)] === [2024-06-21 19:05:49,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:05:49,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1669032703, now seen corresponding path program 18 times [2024-06-21 19:05:49,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:05:49,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456776404] [2024-06-21 19:05:49,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:05:49,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:05:49,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:05:50,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:05:50,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:05:50,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456776404] [2024-06-21 19:05:50,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456776404] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:05:50,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:05:50,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:05:50,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987292603] [2024-06-21 19:05:50,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:05:50,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:05:50,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:05:50,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:05:50,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:05:50,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:05:50,829 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) [2024-06-21 19:05:50,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:05:50,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:05:50,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:05:51,327 INFO L124 PetriNetUnfolderBase]: 776/1426 cut-off events. [2024-06-21 19:05:51,327 INFO L125 PetriNetUnfolderBase]: For 154332/154332 co-relation queries the response was YES. [2024-06-21 19:05:51,342 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. [2024-06-21 19:05:51,347 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 294 selfloop transitions, 71 changer transitions 0/367 dead transitions. [2024-06-21 19:05:51,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 367 transitions, 5806 flow [2024-06-21 19:05:51,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:05:51,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:05:51,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-21 19:05:51,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36774193548387096 [2024-06-21 19:05:51,348 INFO L175 Difference]: Start difference. First operand has 444 places, 353 transitions, 5042 flow. Second operand 10 states and 114 transitions. [2024-06-21 19:05:51,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 367 transitions, 5806 flow [2024-06-21 19:05:51,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 367 transitions, 5586 flow, removed 39 selfloop flow, removed 9 redundant places. [2024-06-21 19:05:51,998 INFO L231 Difference]: Finished difference. Result has 445 places, 353 transitions, 4968 flow [2024-06-21 19:05:51,998 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} [2024-06-21 19:05:51,999 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 415 predicate places. [2024-06-21 19:05:51,999 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 353 transitions, 4968 flow [2024-06-21 19:05:52,000 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) [2024-06-21 19:05:52,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:05:52,000 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:05:52,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-21 19:05:52,001 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)] === [2024-06-21 19:05:52,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:05:52,001 INFO L85 PathProgramCache]: Analyzing trace with hash 587622617, now seen corresponding path program 19 times [2024-06-21 19:05:52,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:05:52,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890445771] [2024-06-21 19:05:52,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:05:52,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:05:52,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:05:53,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:05:53,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:05:53,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890445771] [2024-06-21 19:05:53,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890445771] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:05:53,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:05:53,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:05:53,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442494388] [2024-06-21 19:05:53,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:05:53,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:05:53,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:05:53,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:05:53,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:05:53,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:05:53,347 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) [2024-06-21 19:05:53,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:05:53,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:05:53,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:05:53,853 INFO L124 PetriNetUnfolderBase]: 780/1434 cut-off events. [2024-06-21 19:05:53,854 INFO L125 PetriNetUnfolderBase]: For 156334/156334 co-relation queries the response was YES. [2024-06-21 19:05:53,869 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. [2024-06-21 19:05:53,873 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 342 selfloop transitions, 27 changer transitions 0/371 dead transitions. [2024-06-21 19:05:53,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 371 transitions, 5828 flow [2024-06-21 19:05:53,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:05:53,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:05:53,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 111 transitions. [2024-06-21 19:05:53,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3255131964809384 [2024-06-21 19:05:53,874 INFO L175 Difference]: Start difference. First operand has 445 places, 353 transitions, 4968 flow. Second operand 11 states and 111 transitions. [2024-06-21 19:05:53,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 371 transitions, 5828 flow [2024-06-21 19:05:54,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 447 places, 371 transitions, 5686 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-21 19:05:54,519 INFO L231 Difference]: Finished difference. Result has 449 places, 355 transitions, 4972 flow [2024-06-21 19:05:54,519 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} [2024-06-21 19:05:54,520 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 419 predicate places. [2024-06-21 19:05:54,520 INFO L495 AbstractCegarLoop]: Abstraction has has 449 places, 355 transitions, 4972 flow [2024-06-21 19:05:54,520 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) [2024-06-21 19:05:54,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:05:54,520 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:05:54,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-21 19:05:54,520 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)] === [2024-06-21 19:05:54,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:05:54,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1964059053, now seen corresponding path program 20 times [2024-06-21 19:05:54,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:05:54,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359479564] [2024-06-21 19:05:54,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:05:54,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:05:54,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:05:55,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:05:55,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:05:55,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359479564] [2024-06-21 19:05:55,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359479564] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:05:55,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:05:55,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:05:55,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435277586] [2024-06-21 19:05:55,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:05:55,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:05:55,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:05:55,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:05:55,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:05:55,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:05:55,840 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) [2024-06-21 19:05:55,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:05:55,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:05:55,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:05:56,317 INFO L124 PetriNetUnfolderBase]: 795/1463 cut-off events. [2024-06-21 19:05:56,317 INFO L125 PetriNetUnfolderBase]: For 174870/174870 co-relation queries the response was YES. [2024-06-21 19:05:56,332 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. [2024-06-21 19:05:56,337 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 337 selfloop transitions, 35 changer transitions 0/374 dead transitions. [2024-06-21 19:05:56,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 374 transitions, 6126 flow [2024-06-21 19:05:56,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:05:56,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:05:56,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-21 19:05:56,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3580645161290323 [2024-06-21 19:05:56,346 INFO L175 Difference]: Start difference. First operand has 449 places, 355 transitions, 4972 flow. Second operand 10 states and 111 transitions. [2024-06-21 19:05:56,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 374 transitions, 6126 flow [2024-06-21 19:05:57,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 374 transitions, 5994 flow, removed 39 selfloop flow, removed 9 redundant places. [2024-06-21 19:05:57,103 INFO L231 Difference]: Finished difference. Result has 452 places, 359 transitions, 5073 flow [2024-06-21 19:05:57,103 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} [2024-06-21 19:05:57,104 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 422 predicate places. [2024-06-21 19:05:57,105 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 359 transitions, 5073 flow [2024-06-21 19:05:57,105 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) [2024-06-21 19:05:57,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:05:57,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:05:57,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-21 19:05:57,107 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)] === [2024-06-21 19:05:57,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:05:57,107 INFO L85 PathProgramCache]: Analyzing trace with hash 304412407, now seen corresponding path program 21 times [2024-06-21 19:05:57,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:05:57,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46373597] [2024-06-21 19:05:57,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:05:57,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:05:57,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:05:58,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:05:58,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:05:58,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46373597] [2024-06-21 19:05:58,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46373597] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:05:58,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:05:58,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:05:58,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624501349] [2024-06-21 19:05:58,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:05:58,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:05:58,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:05:58,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:05:58,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:05:58,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:05:58,406 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) [2024-06-21 19:05:58,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:05:58,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:05:58,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:05:58,874 INFO L124 PetriNetUnfolderBase]: 799/1471 cut-off events. [2024-06-21 19:05:58,874 INFO L125 PetriNetUnfolderBase]: For 178089/178089 co-relation queries the response was YES. [2024-06-21 19:05:58,889 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. [2024-06-21 19:05:58,893 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 334 selfloop transitions, 36 changer transitions 0/372 dead transitions. [2024-06-21 19:05:58,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 372 transitions, 5902 flow [2024-06-21 19:05:58,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:05:58,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:05:58,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-21 19:05:58,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-21 19:05:58,895 INFO L175 Difference]: Start difference. First operand has 452 places, 359 transitions, 5073 flow. Second operand 10 states and 108 transitions. [2024-06-21 19:05:58,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 372 transitions, 5902 flow [2024-06-21 19:05:59,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 372 transitions, 5743 flow, removed 57 selfloop flow, removed 5 redundant places. [2024-06-21 19:05:59,625 INFO L231 Difference]: Finished difference. Result has 457 places, 360 transitions, 5051 flow [2024-06-21 19:05:59,625 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} [2024-06-21 19:05:59,625 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 427 predicate places. [2024-06-21 19:05:59,625 INFO L495 AbstractCegarLoop]: Abstraction has has 457 places, 360 transitions, 5051 flow [2024-06-21 19:05:59,626 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) [2024-06-21 19:05:59,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:05:59,626 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:05:59,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-21 19:05:59,626 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)] === [2024-06-21 19:05:59,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:05:59,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1963943733, now seen corresponding path program 22 times [2024-06-21 19:05:59,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:05:59,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75351772] [2024-06-21 19:05:59,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:05:59,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:05:59,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:06:00,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:06:00,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:06:00,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75351772] [2024-06-21 19:06:00,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75351772] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:06:00,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:06:00,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:06:00,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607904683] [2024-06-21 19:06:00,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:06:00,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:06:00,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:06:00,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:06:00,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:06:00,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:06:00,933 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) [2024-06-21 19:06:00,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:06:00,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:06:00,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:06:01,448 INFO L124 PetriNetUnfolderBase]: 796/1466 cut-off events. [2024-06-21 19:06:01,448 INFO L125 PetriNetUnfolderBase]: For 163995/163995 co-relation queries the response was YES. [2024-06-21 19:06:01,460 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. [2024-06-21 19:06:01,463 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 335 selfloop transitions, 36 changer transitions 0/373 dead transitions. [2024-06-21 19:06:01,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 466 places, 373 transitions, 5825 flow [2024-06-21 19:06:01,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:06:01,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:06:01,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-21 19:06:01,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-21 19:06:01,465 INFO L175 Difference]: Start difference. First operand has 457 places, 360 transitions, 5051 flow. Second operand 10 states and 109 transitions. [2024-06-21 19:06:01,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 466 places, 373 transitions, 5825 flow [2024-06-21 19:06:02,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 458 places, 373 transitions, 5651 flow, removed 38 selfloop flow, removed 8 redundant places. [2024-06-21 19:06:02,131 INFO L231 Difference]: Finished difference. Result has 459 places, 360 transitions, 4953 flow [2024-06-21 19:06:02,132 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} [2024-06-21 19:06:02,132 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 429 predicate places. [2024-06-21 19:06:02,132 INFO L495 AbstractCegarLoop]: Abstraction has has 459 places, 360 transitions, 4953 flow [2024-06-21 19:06:02,132 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) [2024-06-21 19:06:02,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:06:02,132 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:06:02,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-21 19:06:02,133 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)] === [2024-06-21 19:06:02,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:06:02,133 INFO L85 PathProgramCache]: Analyzing trace with hash 353902727, now seen corresponding path program 23 times [2024-06-21 19:06:02,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:06:02,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964365605] [2024-06-21 19:06:02,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:06:02,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:06:02,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:06:03,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:06:03,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:06:03,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964365605] [2024-06-21 19:06:03,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964365605] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:06:03,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:06:03,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:06:03,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876471455] [2024-06-21 19:06:03,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:06:03,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:06:03,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:06:03,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:06:03,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:06:03,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:06:03,533 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) [2024-06-21 19:06:03,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:06:03,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:06:03,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:06:04,014 INFO L124 PetriNetUnfolderBase]: 811/1495 cut-off events. [2024-06-21 19:06:04,014 INFO L125 PetriNetUnfolderBase]: For 181924/181924 co-relation queries the response was YES. [2024-06-21 19:06:04,030 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. [2024-06-21 19:06:04,034 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 344 selfloop transitions, 33 changer transitions 0/379 dead transitions. [2024-06-21 19:06:04,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 379 transitions, 6129 flow [2024-06-21 19:06:04,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:06:04,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:06:04,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-21 19:06:04,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3580645161290323 [2024-06-21 19:06:04,035 INFO L175 Difference]: Start difference. First operand has 459 places, 360 transitions, 4953 flow. Second operand 10 states and 111 transitions. [2024-06-21 19:06:04,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 379 transitions, 6129 flow [2024-06-21 19:06:04,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 379 transitions, 6057 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-21 19:06:04,755 INFO L231 Difference]: Finished difference. Result has 463 places, 364 transitions, 5116 flow [2024-06-21 19:06:04,755 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} [2024-06-21 19:06:04,755 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 433 predicate places. [2024-06-21 19:06:04,756 INFO L495 AbstractCegarLoop]: Abstraction has has 463 places, 364 transitions, 5116 flow [2024-06-21 19:06:04,756 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) [2024-06-21 19:06:04,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:06:04,756 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:06:04,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-21 19:06:04,756 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)] === [2024-06-21 19:06:04,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:06:04,756 INFO L85 PathProgramCache]: Analyzing trace with hash 727975677, now seen corresponding path program 24 times [2024-06-21 19:06:04,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:06:04,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133618574] [2024-06-21 19:06:04,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:06:04,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:06:04,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:06:06,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:06:06,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:06:06,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133618574] [2024-06-21 19:06:06,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133618574] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:06:06,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:06:06,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:06:06,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495636152] [2024-06-21 19:06:06,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:06:06,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:06:06,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:06:06,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:06:06,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:06:06,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:06:06,237 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) [2024-06-21 19:06:06,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:06:06,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:06:06,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:06:06,819 INFO L124 PetriNetUnfolderBase]: 815/1503 cut-off events. [2024-06-21 19:06:06,819 INFO L125 PetriNetUnfolderBase]: For 186885/186885 co-relation queries the response was YES. [2024-06-21 19:06:06,835 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. [2024-06-21 19:06:06,840 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 341 selfloop transitions, 34 changer transitions 0/377 dead transitions. [2024-06-21 19:06:06,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 472 places, 377 transitions, 5957 flow [2024-06-21 19:06:06,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:06:06,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:06:06,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-21 19:06:06,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-21 19:06:06,841 INFO L175 Difference]: Start difference. First operand has 463 places, 364 transitions, 5116 flow. Second operand 10 states and 108 transitions. [2024-06-21 19:06:06,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 472 places, 377 transitions, 5957 flow [2024-06-21 19:06:07,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 377 transitions, 5803 flow, removed 61 selfloop flow, removed 4 redundant places. [2024-06-21 19:06:07,545 INFO L231 Difference]: Finished difference. Result has 469 places, 365 transitions, 5097 flow [2024-06-21 19:06:07,546 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} [2024-06-21 19:06:07,546 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 439 predicate places. [2024-06-21 19:06:07,546 INFO L495 AbstractCegarLoop]: Abstraction has has 469 places, 365 transitions, 5097 flow [2024-06-21 19:06:07,546 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) [2024-06-21 19:06:07,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:06:07,546 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:06:07,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-21 19:06:07,547 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)] === [2024-06-21 19:06:07,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:06:07,547 INFO L85 PathProgramCache]: Analyzing trace with hash -145769653, now seen corresponding path program 25 times [2024-06-21 19:06:07,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:06:07,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185141214] [2024-06-21 19:06:07,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:06:07,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:06:07,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:06:09,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:06:09,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:06:09,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185141214] [2024-06-21 19:06:09,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185141214] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:06:09,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:06:09,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:06:09,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400583110] [2024-06-21 19:06:09,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:06:09,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:06:09,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:06:09,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:06:09,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:06:09,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:06:09,137 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) [2024-06-21 19:06:09,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:06:09,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:06:09,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:06:09,627 INFO L124 PetriNetUnfolderBase]: 812/1498 cut-off events. [2024-06-21 19:06:09,627 INFO L125 PetriNetUnfolderBase]: For 172031/172031 co-relation queries the response was YES. [2024-06-21 19:06:09,643 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. [2024-06-21 19:06:09,647 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 342 selfloop transitions, 34 changer transitions 0/378 dead transitions. [2024-06-21 19:06:09,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 378 transitions, 5881 flow [2024-06-21 19:06:09,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:06:09,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:06:09,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-21 19:06:09,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-21 19:06:09,649 INFO L175 Difference]: Start difference. First operand has 469 places, 365 transitions, 5097 flow. Second operand 10 states and 109 transitions. [2024-06-21 19:06:09,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 378 transitions, 5881 flow [2024-06-21 19:06:10,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 378 transitions, 5719 flow, removed 38 selfloop flow, removed 10 redundant places. [2024-06-21 19:06:10,402 INFO L231 Difference]: Finished difference. Result has 469 places, 365 transitions, 5007 flow [2024-06-21 19:06:10,402 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} [2024-06-21 19:06:10,402 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 439 predicate places. [2024-06-21 19:06:10,403 INFO L495 AbstractCegarLoop]: Abstraction has has 469 places, 365 transitions, 5007 flow [2024-06-21 19:06:10,403 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) [2024-06-21 19:06:10,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:06:10,403 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:06:10,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-21 19:06:10,403 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)] === [2024-06-21 19:06:10,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:06:10,403 INFO L85 PathProgramCache]: Analyzing trace with hash 26303221, now seen corresponding path program 26 times [2024-06-21 19:06:10,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:06:10,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807484322] [2024-06-21 19:06:10,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:06:10,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:06:10,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:06:11,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:06:11,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:06:11,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807484322] [2024-06-21 19:06:11,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807484322] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:06:11,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:06:11,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:06:11,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415330822] [2024-06-21 19:06:11,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:06:11,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:06:11,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:06:11,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:06:11,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:06:11,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:06:11,858 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) [2024-06-21 19:06:11,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:06:11,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:06:11,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:06:12,347 INFO L124 PetriNetUnfolderBase]: 816/1506 cut-off events. [2024-06-21 19:06:12,347 INFO L125 PetriNetUnfolderBase]: For 174586/174586 co-relation queries the response was YES. [2024-06-21 19:06:12,364 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. [2024-06-21 19:06:12,368 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 315 selfloop transitions, 60 changer transitions 0/377 dead transitions. [2024-06-21 19:06:12,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 479 places, 377 transitions, 5843 flow [2024-06-21 19:06:12,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:06:12,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:06:12,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-21 19:06:12,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34310850439882695 [2024-06-21 19:06:12,370 INFO L175 Difference]: Start difference. First operand has 469 places, 365 transitions, 5007 flow. Second operand 11 states and 117 transitions. [2024-06-21 19:06:12,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 479 places, 377 transitions, 5843 flow [2024-06-21 19:06:13,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 471 places, 377 transitions, 5775 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-21 19:06:13,105 INFO L231 Difference]: Finished difference. Result has 472 places, 366 transitions, 5125 flow [2024-06-21 19:06:13,105 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} [2024-06-21 19:06:13,106 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 442 predicate places. [2024-06-21 19:06:13,106 INFO L495 AbstractCegarLoop]: Abstraction has has 472 places, 366 transitions, 5125 flow [2024-06-21 19:06:13,106 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) [2024-06-21 19:06:13,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:06:13,106 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:06:13,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-21 19:06:13,106 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)] === [2024-06-21 19:06:13,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:06:13,107 INFO L85 PathProgramCache]: Analyzing trace with hash 19869481, now seen corresponding path program 27 times [2024-06-21 19:06:13,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:06:13,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43148726] [2024-06-21 19:06:13,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:06:13,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:06:13,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:06:14,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:06:14,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:06:14,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43148726] [2024-06-21 19:06:14,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43148726] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:06:14,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:06:14,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:06:14,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268380223] [2024-06-21 19:06:14,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:06:14,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:06:14,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:06:14,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:06:14,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:06:14,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:06:14,645 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) [2024-06-21 19:06:14,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:06:14,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:06:14,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:06:15,145 INFO L124 PetriNetUnfolderBase]: 831/1535 cut-off events. [2024-06-21 19:06:15,145 INFO L125 PetriNetUnfolderBase]: For 196004/196004 co-relation queries the response was YES. [2024-06-21 19:06:15,163 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. [2024-06-21 19:06:15,167 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 324 selfloop transitions, 56 changer transitions 0/382 dead transitions. [2024-06-21 19:06:15,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 481 places, 382 transitions, 6285 flow [2024-06-21 19:06:15,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:06:15,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:06:15,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-21 19:06:15,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36774193548387096 [2024-06-21 19:06:15,169 INFO L175 Difference]: Start difference. First operand has 472 places, 366 transitions, 5125 flow. Second operand 10 states and 114 transitions. [2024-06-21 19:06:15,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 481 places, 382 transitions, 6285 flow [2024-06-21 19:06:16,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 472 places, 382 transitions, 6109 flow, removed 29 selfloop flow, removed 9 redundant places. [2024-06-21 19:06:16,045 INFO L231 Difference]: Finished difference. Result has 474 places, 369 transitions, 5203 flow [2024-06-21 19:06:16,045 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} [2024-06-21 19:06:16,045 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 444 predicate places. [2024-06-21 19:06:16,046 INFO L495 AbstractCegarLoop]: Abstraction has has 474 places, 369 transitions, 5203 flow [2024-06-21 19:06:16,046 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) [2024-06-21 19:06:16,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:06:16,046 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:06:16,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-21 19:06:16,046 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)] === [2024-06-21 19:06:16,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:06:16,047 INFO L85 PathProgramCache]: Analyzing trace with hash 20047111, now seen corresponding path program 28 times [2024-06-21 19:06:16,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:06:16,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421786018] [2024-06-21 19:06:16,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:06:16,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:06:16,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:06:17,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:06:17,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:06:17,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421786018] [2024-06-21 19:06:17,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421786018] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:06:17,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:06:17,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:06:17,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587717476] [2024-06-21 19:06:17,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:06:17,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:06:17,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:06:17,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:06:17,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:06:17,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:06:17,617 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) [2024-06-21 19:06:17,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:06:17,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:06:17,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:06:18,160 INFO L124 PetriNetUnfolderBase]: 828/1530 cut-off events. [2024-06-21 19:06:18,160 INFO L125 PetriNetUnfolderBase]: For 182732/182732 co-relation queries the response was YES. [2024-06-21 19:06:18,176 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. [2024-06-21 19:06:18,181 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 323 selfloop transitions, 55 changer transitions 0/380 dead transitions. [2024-06-21 19:06:18,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 484 places, 380 transitions, 5985 flow [2024-06-21 19:06:18,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:06:18,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:06:18,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-21 19:06:18,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3460410557184751 [2024-06-21 19:06:18,182 INFO L175 Difference]: Start difference. First operand has 474 places, 369 transitions, 5203 flow. Second operand 11 states and 118 transitions. [2024-06-21 19:06:18,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 484 places, 380 transitions, 5985 flow [2024-06-21 19:06:19,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 380 transitions, 5798 flow, removed 59 selfloop flow, removed 6 redundant places. [2024-06-21 19:06:19,032 INFO L231 Difference]: Finished difference. Result has 479 places, 369 transitions, 5130 flow [2024-06-21 19:06:19,032 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} [2024-06-21 19:06:19,032 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 449 predicate places. [2024-06-21 19:06:19,032 INFO L495 AbstractCegarLoop]: Abstraction has has 479 places, 369 transitions, 5130 flow [2024-06-21 19:06:19,033 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) [2024-06-21 19:06:19,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:06:19,033 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:06:19,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-21 19:06:19,033 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)] === [2024-06-21 19:06:19,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:06:19,033 INFO L85 PathProgramCache]: Analyzing trace with hash -146186669, now seen corresponding path program 29 times [2024-06-21 19:06:19,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:06:19,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049663593] [2024-06-21 19:06:19,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:06:19,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:06:19,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:06:20,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:06:20,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:06:20,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049663593] [2024-06-21 19:06:20,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049663593] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:06:20,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:06:20,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:06:20,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007491018] [2024-06-21 19:06:20,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:06:20,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:06:20,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:06:20,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:06:20,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:06:20,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:06:20,582 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) [2024-06-21 19:06:20,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:06:20,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:06:20,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:06:21,166 INFO L124 PetriNetUnfolderBase]: 832/1538 cut-off events. [2024-06-21 19:06:21,167 INFO L125 PetriNetUnfolderBase]: For 183614/183614 co-relation queries the response was YES. [2024-06-21 19:06:21,183 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. [2024-06-21 19:06:21,188 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 327 selfloop transitions, 52 changer transitions 0/381 dead transitions. [2024-06-21 19:06:21,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 489 places, 381 transitions, 5978 flow [2024-06-21 19:06:21,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:06:21,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:06:21,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-21 19:06:21,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489736070381232 [2024-06-21 19:06:21,189 INFO L175 Difference]: Start difference. First operand has 479 places, 369 transitions, 5130 flow. Second operand 11 states and 119 transitions. [2024-06-21 19:06:21,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 489 places, 381 transitions, 5978 flow [2024-06-21 19:06:21,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 480 places, 381 transitions, 5868 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-21 19:06:21,992 INFO L231 Difference]: Finished difference. Result has 481 places, 370 transitions, 5194 flow [2024-06-21 19:06:21,992 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} [2024-06-21 19:06:21,992 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 451 predicate places. [2024-06-21 19:06:21,993 INFO L495 AbstractCegarLoop]: Abstraction has has 481 places, 370 transitions, 5194 flow [2024-06-21 19:06:21,993 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) [2024-06-21 19:06:21,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:06:21,993 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:06:21,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-21 19:06:21,993 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)] === [2024-06-21 19:06:21,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:06:21,994 INFO L85 PathProgramCache]: Analyzing trace with hash -146364299, now seen corresponding path program 30 times [2024-06-21 19:06:21,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:06:21,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487402978] [2024-06-21 19:06:21,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:06:21,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:06:22,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:06:23,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:06:23,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:06:23,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487402978] [2024-06-21 19:06:23,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487402978] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:06:23,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:06:23,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:06:23,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923224643] [2024-06-21 19:06:23,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:06:23,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:06:23,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:06:23,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:06:23,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:06:23,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:06:23,507 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) [2024-06-21 19:06:23,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:06:23,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:06:23,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:06:24,029 INFO L124 PetriNetUnfolderBase]: 840/1554 cut-off events. [2024-06-21 19:06:24,029 INFO L125 PetriNetUnfolderBase]: For 188401/188401 co-relation queries the response was YES. [2024-06-21 19:06:24,046 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. [2024-06-21 19:06:24,050 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 330 selfloop transitions, 52 changer transitions 0/384 dead transitions. [2024-06-21 19:06:24,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 490 places, 384 transitions, 6058 flow [2024-06-21 19:06:24,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:06:24,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:06:24,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-21 19:06:24,052 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-21 19:06:24,052 INFO L175 Difference]: Start difference. First operand has 481 places, 370 transitions, 5194 flow. Second operand 10 states and 115 transitions. [2024-06-21 19:06:24,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 490 places, 384 transitions, 6058 flow [2024-06-21 19:06:24,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 481 places, 384 transitions, 5894 flow, removed 31 selfloop flow, removed 9 redundant places. [2024-06-21 19:06:24,777 INFO L231 Difference]: Finished difference. Result has 483 places, 372 transitions, 5218 flow [2024-06-21 19:06:24,777 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} [2024-06-21 19:06:24,778 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 453 predicate places. [2024-06-21 19:06:24,778 INFO L495 AbstractCegarLoop]: Abstraction has has 483 places, 372 transitions, 5218 flow [2024-06-21 19:06:24,778 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) [2024-06-21 19:06:24,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:06:24,778 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:06:24,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-21 19:06:24,778 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)] === [2024-06-21 19:06:24,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:06:24,778 INFO L85 PathProgramCache]: Analyzing trace with hash -150948269, now seen corresponding path program 31 times [2024-06-21 19:06:24,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:06:24,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425611570] [2024-06-21 19:06:24,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:06:24,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:06:24,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:06:26,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:06:26,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:06:26,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425611570] [2024-06-21 19:06:26,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425611570] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:06:26,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:06:26,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:06:26,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245024926] [2024-06-21 19:06:26,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:06:26,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:06:26,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:06:26,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:06:26,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:06:26,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:06:26,313 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) [2024-06-21 19:06:26,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:06:26,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:06:26,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:06:26,783 INFO L124 PetriNetUnfolderBase]: 844/1562 cut-off events. [2024-06-21 19:06:26,783 INFO L125 PetriNetUnfolderBase]: For 191847/191847 co-relation queries the response was YES. [2024-06-21 19:06:26,801 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. [2024-06-21 19:06:26,805 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 330 selfloop transitions, 55 changer transitions 0/387 dead transitions. [2024-06-21 19:06:26,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 492 places, 387 transitions, 6120 flow [2024-06-21 19:06:26,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:06:26,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:06:26,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-21 19:06:26,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36774193548387096 [2024-06-21 19:06:26,807 INFO L175 Difference]: Start difference. First operand has 483 places, 372 transitions, 5218 flow. Second operand 10 states and 114 transitions. [2024-06-21 19:06:26,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 492 places, 387 transitions, 6120 flow [2024-06-21 19:06:27,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 485 places, 387 transitions, 5956 flow, removed 33 selfloop flow, removed 7 redundant places. [2024-06-21 19:06:27,608 INFO L231 Difference]: Finished difference. Result has 487 places, 374 transitions, 5286 flow [2024-06-21 19:06:27,615 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} [2024-06-21 19:06:27,616 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 457 predicate places. [2024-06-21 19:06:27,616 INFO L495 AbstractCegarLoop]: Abstraction has has 487 places, 374 transitions, 5286 flow [2024-06-21 19:06:27,616 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) [2024-06-21 19:06:27,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:06:27,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:06:27,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-21 19:06:27,616 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)] === [2024-06-21 19:06:27,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:06:27,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1912101815, now seen corresponding path program 2 times [2024-06-21 19:06:27,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:06:27,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373152854] [2024-06-21 19:06:27,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:06:27,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:06:27,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:06:29,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:06:29,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:06:29,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373152854] [2024-06-21 19:06:29,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373152854] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:06:29,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:06:29,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:06:29,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484712616] [2024-06-21 19:06:29,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:06:29,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:06:29,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:06:29,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:06:29,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:06:29,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:06:29,137 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) [2024-06-21 19:06:29,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:06:29,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:06:29,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:06:29,671 INFO L124 PetriNetUnfolderBase]: 860/1588 cut-off events. [2024-06-21 19:06:29,671 INFO L125 PetriNetUnfolderBase]: For 207035/207035 co-relation queries the response was YES. [2024-06-21 19:06:29,690 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. [2024-06-21 19:06:29,695 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 362 selfloop transitions, 28 changer transitions 0/392 dead transitions. [2024-06-21 19:06:29,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 498 places, 392 transitions, 6500 flow [2024-06-21 19:06:29,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:06:29,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:06:29,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 118 transitions. [2024-06-21 19:06:29,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3172043010752688 [2024-06-21 19:06:29,696 INFO L175 Difference]: Start difference. First operand has 487 places, 374 transitions, 5286 flow. Second operand 12 states and 118 transitions. [2024-06-21 19:06:29,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 498 places, 392 transitions, 6500 flow [2024-06-21 19:06:30,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 490 places, 392 transitions, 6294 flow, removed 51 selfloop flow, removed 8 redundant places. [2024-06-21 19:06:30,693 INFO L231 Difference]: Finished difference. Result has 491 places, 378 transitions, 5249 flow [2024-06-21 19:06:30,694 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} [2024-06-21 19:06:30,694 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 461 predicate places. [2024-06-21 19:06:30,694 INFO L495 AbstractCegarLoop]: Abstraction has has 491 places, 378 transitions, 5249 flow [2024-06-21 19:06:30,694 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) [2024-06-21 19:06:30,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:06:30,694 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:06:30,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-21 19:06:30,695 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)] === [2024-06-21 19:06:30,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:06:30,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1912102125, now seen corresponding path program 2 times [2024-06-21 19:06:30,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:06:30,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543640857] [2024-06-21 19:06:30,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:06:30,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:06:30,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:06:32,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:06:32,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:06:32,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543640857] [2024-06-21 19:06:32,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543640857] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:06:32,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:06:32,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:06:32,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421405249] [2024-06-21 19:06:32,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:06:32,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:06:32,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:06:32,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:06:32,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:06:32,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:06:32,316 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) [2024-06-21 19:06:32,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:06:32,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:06:32,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:06:32,935 INFO L124 PetriNetUnfolderBase]: 864/1596 cut-off events. [2024-06-21 19:06:32,935 INFO L125 PetriNetUnfolderBase]: For 208884/208884 co-relation queries the response was YES. [2024-06-21 19:06:32,953 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. [2024-06-21 19:06:32,958 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 365 selfloop transitions, 26 changer transitions 0/393 dead transitions. [2024-06-21 19:06:32,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 503 places, 393 transitions, 6371 flow [2024-06-21 19:06:32,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 19:06:32,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 19:06:32,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 122 transitions. [2024-06-21 19:06:32,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3027295285359802 [2024-06-21 19:06:32,959 INFO L175 Difference]: Start difference. First operand has 491 places, 378 transitions, 5249 flow. Second operand 13 states and 122 transitions. [2024-06-21 19:06:32,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 503 places, 393 transitions, 6371 flow [2024-06-21 19:06:33,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 495 places, 393 transitions, 6290 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-21 19:06:34,004 INFO L231 Difference]: Finished difference. Result has 496 places, 379 transitions, 5258 flow [2024-06-21 19:06:34,004 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} [2024-06-21 19:06:34,004 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 466 predicate places. [2024-06-21 19:06:34,005 INFO L495 AbstractCegarLoop]: Abstraction has has 496 places, 379 transitions, 5258 flow [2024-06-21 19:06:34,005 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) [2024-06-21 19:06:34,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:06:34,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:06:34,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-21 19:06:34,005 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)] === [2024-06-21 19:06:34,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:06:34,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1698281981, now seen corresponding path program 3 times [2024-06-21 19:06:34,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:06:34,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043016953] [2024-06-21 19:06:34,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:06:34,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:06:34,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:06:35,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:06:35,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:06:35,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043016953] [2024-06-21 19:06:35,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043016953] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:06:35,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:06:35,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:06:35,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867373547] [2024-06-21 19:06:35,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:06:35,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:06:35,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:06:35,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:06:35,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:06:35,319 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-21 19:06:35,319 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) [2024-06-21 19:06:35,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:06:35,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-21 19:06:35,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:06:35,785 INFO L124 PetriNetUnfolderBase]: 900/1673 cut-off events. [2024-06-21 19:06:35,785 INFO L125 PetriNetUnfolderBase]: For 316646/316646 co-relation queries the response was YES. [2024-06-21 19:06:35,804 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. [2024-06-21 19:06:35,809 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 250 selfloop transitions, 149 changer transitions 5/407 dead transitions. [2024-06-21 19:06:35,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 505 places, 407 transitions, 7210 flow [2024-06-21 19:06:35,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:06:35,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:06:35,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 145 transitions. [2024-06-21 19:06:35,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46774193548387094 [2024-06-21 19:06:35,810 INFO L175 Difference]: Start difference. First operand has 496 places, 379 transitions, 5258 flow. Second operand 10 states and 145 transitions. [2024-06-21 19:06:35,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 505 places, 407 transitions, 7210 flow [2024-06-21 19:06:36,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 494 places, 407 transitions, 7130 flow, removed 15 selfloop flow, removed 11 redundant places. [2024-06-21 19:06:36,900 INFO L231 Difference]: Finished difference. Result has 496 places, 386 transitions, 5756 flow [2024-06-21 19:06:36,900 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} [2024-06-21 19:06:36,901 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 466 predicate places. [2024-06-21 19:06:36,901 INFO L495 AbstractCegarLoop]: Abstraction has has 496 places, 386 transitions, 5756 flow [2024-06-21 19:06:36,901 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) [2024-06-21 19:06:36,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:06:36,901 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:06:36,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-21 19:06:36,901 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)] === [2024-06-21 19:06:36,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:06:36,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1927939897, now seen corresponding path program 3 times [2024-06-21 19:06:36,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:06:36,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196945896] [2024-06-21 19:06:36,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:06:36,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:06:36,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:06:38,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:06:38,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:06:38,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196945896] [2024-06-21 19:06:38,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196945896] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:06:38,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:06:38,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:06:38,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086970647] [2024-06-21 19:06:38,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:06:38,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:06:38,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:06:38,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:06:38,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:06:38,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:06:38,266 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) [2024-06-21 19:06:38,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:06:38,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:06:38,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:06:38,699 INFO L124 PetriNetUnfolderBase]: 892/1661 cut-off events. [2024-06-21 19:06:38,699 INFO L125 PetriNetUnfolderBase]: For 238025/238025 co-relation queries the response was YES. [2024-06-21 19:06:38,719 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. [2024-06-21 19:06:38,724 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 293 selfloop transitions, 105 changer transitions 0/400 dead transitions. [2024-06-21 19:06:38,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 505 places, 400 transitions, 6684 flow [2024-06-21 19:06:38,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:06:38,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:06:38,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-21 19:06:38,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4096774193548387 [2024-06-21 19:06:38,725 INFO L175 Difference]: Start difference. First operand has 496 places, 386 transitions, 5756 flow. Second operand 10 states and 127 transitions. [2024-06-21 19:06:38,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 505 places, 400 transitions, 6684 flow [2024-06-21 19:06:39,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 502 places, 400 transitions, 6457 flow, removed 54 selfloop flow, removed 3 redundant places. [2024-06-21 19:06:39,749 INFO L231 Difference]: Finished difference. Result has 503 places, 388 transitions, 5806 flow [2024-06-21 19:06:39,749 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} [2024-06-21 19:06:39,750 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 473 predicate places. [2024-06-21 19:06:39,750 INFO L495 AbstractCegarLoop]: Abstraction has has 503 places, 388 transitions, 5806 flow [2024-06-21 19:06:39,750 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) [2024-06-21 19:06:39,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:06:39,750 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:06:39,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-21 19:06:39,750 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)] === [2024-06-21 19:06:39,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:06:39,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1958512611, now seen corresponding path program 4 times [2024-06-21 19:06:39,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:06:39,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610531265] [2024-06-21 19:06:39,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:06:39,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:06:39,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:06:41,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:06:41,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:06:41,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610531265] [2024-06-21 19:06:41,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610531265] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:06:41,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:06:41,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:06:41,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870049891] [2024-06-21 19:06:41,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:06:41,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:06:41,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:06:41,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:06:41,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:06:41,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-21 19:06:41,142 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) [2024-06-21 19:06:41,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:06:41,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-21 19:06:41,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:06:41,745 INFO L124 PetriNetUnfolderBase]: 905/1682 cut-off events. [2024-06-21 19:06:41,746 INFO L125 PetriNetUnfolderBase]: For 249612/249612 co-relation queries the response was YES. [2024-06-21 19:06:41,766 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. [2024-06-21 19:06:41,771 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 278 selfloop transitions, 126 changer transitions 0/407 dead transitions. [2024-06-21 19:06:41,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 511 places, 407 transitions, 7852 flow [2024-06-21 19:06:41,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:06:41,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:06:41,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 132 transitions. [2024-06-21 19:06:41,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4731182795698925 [2024-06-21 19:06:41,772 INFO L175 Difference]: Start difference. First operand has 503 places, 388 transitions, 5806 flow. Second operand 9 states and 132 transitions. [2024-06-21 19:06:41,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 511 places, 407 transitions, 7852 flow [2024-06-21 19:06:42,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 503 places, 407 transitions, 7593 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-21 19:06:42,890 INFO L231 Difference]: Finished difference. Result has 504 places, 394 transitions, 5968 flow [2024-06-21 19:06:42,890 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} [2024-06-21 19:06:42,890 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 474 predicate places. [2024-06-21 19:06:42,890 INFO L495 AbstractCegarLoop]: Abstraction has has 504 places, 394 transitions, 5968 flow [2024-06-21 19:06:42,891 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) [2024-06-21 19:06:42,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:06:42,891 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:06:42,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-21 19:06:42,891 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)] === [2024-06-21 19:06:42,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:06:42,891 INFO L85 PathProgramCache]: Analyzing trace with hash -2105317185, now seen corresponding path program 5 times [2024-06-21 19:06:42,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:06:42,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206443377] [2024-06-21 19:06:42,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:06:42,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:06:42,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:06:44,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:06:44,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:06:44,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206443377] [2024-06-21 19:06:44,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206443377] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:06:44,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:06:44,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:06:44,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738333129] [2024-06-21 19:06:44,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:06:44,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:06:44,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:06:44,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:06:44,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:06:44,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:06:44,346 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) [2024-06-21 19:06:44,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:06:44,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:06:44,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:06:44,872 INFO L124 PetriNetUnfolderBase]: 908/1687 cut-off events. [2024-06-21 19:06:44,873 INFO L125 PetriNetUnfolderBase]: For 253721/253721 co-relation queries the response was YES. [2024-06-21 19:06:44,892 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. [2024-06-21 19:06:44,897 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 286 selfloop transitions, 118 changer transitions 0/406 dead transitions. [2024-06-21 19:06:44,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 512 places, 406 transitions, 7120 flow [2024-06-21 19:06:44,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:06:44,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:06:44,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-21 19:06:44,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4265232974910394 [2024-06-21 19:06:44,898 INFO L175 Difference]: Start difference. First operand has 504 places, 394 transitions, 5968 flow. Second operand 9 states and 119 transitions. [2024-06-21 19:06:44,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 512 places, 406 transitions, 7120 flow [2024-06-21 19:06:46,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 507 places, 406 transitions, 6896 flow, removed 31 selfloop flow, removed 5 redundant places. [2024-06-21 19:06:46,120 INFO L231 Difference]: Finished difference. Result has 508 places, 396 transitions, 6047 flow [2024-06-21 19:06:46,120 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} [2024-06-21 19:06:46,121 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 478 predicate places. [2024-06-21 19:06:46,121 INFO L495 AbstractCegarLoop]: Abstraction has has 508 places, 396 transitions, 6047 flow [2024-06-21 19:06:46,121 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) [2024-06-21 19:06:46,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:06:46,121 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:06:46,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-21 19:06:46,121 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)] === [2024-06-21 19:06:46,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:06:46,122 INFO L85 PathProgramCache]: Analyzing trace with hash 2108246219, now seen corresponding path program 32 times [2024-06-21 19:06:46,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:06:46,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430092527] [2024-06-21 19:06:46,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:06:46,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:06:46,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:06:47,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:06:47,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:06:47,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430092527] [2024-06-21 19:06:47,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430092527] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:06:47,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:06:47,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:06:47,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886876153] [2024-06-21 19:06:47,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:06:47,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:06:47,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:06:47,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:06:47,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:06:47,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:06:47,746 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) [2024-06-21 19:06:47,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:06:47,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:06:47,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:06:48,409 INFO L124 PetriNetUnfolderBase]: 923/1716 cut-off events. [2024-06-21 19:06:48,409 INFO L125 PetriNetUnfolderBase]: For 284482/284482 co-relation queries the response was YES. [2024-06-21 19:06:48,430 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. [2024-06-21 19:06:48,435 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 291 selfloop transitions, 118 changer transitions 0/411 dead transitions. [2024-06-21 19:06:48,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 518 places, 411 transitions, 7299 flow [2024-06-21 19:06:48,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:06:48,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:06:48,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-21 19:06:48,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-21 19:06:48,437 INFO L175 Difference]: Start difference. First operand has 508 places, 396 transitions, 6047 flow. Second operand 11 states and 121 transitions. [2024-06-21 19:06:48,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 518 places, 411 transitions, 7299 flow [2024-06-21 19:06:49,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 510 places, 411 transitions, 6992 flow, removed 30 selfloop flow, removed 8 redundant places. [2024-06-21 19:06:49,639 INFO L231 Difference]: Finished difference. Result has 512 places, 399 transitions, 6134 flow [2024-06-21 19:06:49,639 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} [2024-06-21 19:06:49,640 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 482 predicate places. [2024-06-21 19:06:49,640 INFO L495 AbstractCegarLoop]: Abstraction has has 512 places, 399 transitions, 6134 flow [2024-06-21 19:06:49,640 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) [2024-06-21 19:06:49,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:06:49,640 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:06:49,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-21 19:06:49,640 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)] === [2024-06-21 19:06:49,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:06:49,641 INFO L85 PathProgramCache]: Analyzing trace with hash 2108250869, now seen corresponding path program 33 times [2024-06-21 19:06:49,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:06:49,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520253239] [2024-06-21 19:06:49,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:06:49,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:06:49,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:06:51,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:06:51,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:06:51,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520253239] [2024-06-21 19:06:51,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520253239] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:06:51,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:06:51,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:06:51,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007442671] [2024-06-21 19:06:51,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:06:51,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:06:51,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:06:51,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:06:51,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:06:51,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:06:51,336 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) [2024-06-21 19:06:51,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:06:51,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:06:51,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:06:51,953 INFO L124 PetriNetUnfolderBase]: 920/1711 cut-off events. [2024-06-21 19:06:51,953 INFO L125 PetriNetUnfolderBase]: For 267227/267227 co-relation queries the response was YES. [2024-06-21 19:06:51,974 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. [2024-06-21 19:06:51,979 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 289 selfloop transitions, 118 changer transitions 0/409 dead transitions. [2024-06-21 19:06:51,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 522 places, 409 transitions, 6970 flow [2024-06-21 19:06:51,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:06:51,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:06:51,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-21 19:06:51,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489736070381232 [2024-06-21 19:06:51,981 INFO L175 Difference]: Start difference. First operand has 512 places, 399 transitions, 6134 flow. Second operand 11 states and 119 transitions. [2024-06-21 19:06:51,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 522 places, 409 transitions, 6970 flow [2024-06-21 19:06:53,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 515 places, 409 transitions, 6693 flow, removed 68 selfloop flow, removed 7 redundant places. [2024-06-21 19:06:53,152 INFO L231 Difference]: Finished difference. Result has 516 places, 399 transitions, 6097 flow [2024-06-21 19:06:53,153 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} [2024-06-21 19:06:53,153 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 486 predicate places. [2024-06-21 19:06:53,153 INFO L495 AbstractCegarLoop]: Abstraction has has 516 places, 399 transitions, 6097 flow [2024-06-21 19:06:53,153 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) [2024-06-21 19:06:53,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:06:53,153 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:06:53,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-21 19:06:53,154 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)] === [2024-06-21 19:06:53,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:06:53,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1901982795, now seen corresponding path program 4 times [2024-06-21 19:06:53,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:06:53,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559689809] [2024-06-21 19:06:53,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:06:53,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:06:53,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:06:54,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:06:54,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:06:54,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559689809] [2024-06-21 19:06:54,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559689809] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:06:54,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:06:54,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:06:54,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865079233] [2024-06-21 19:06:54,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:06:54,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:06:54,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:06:54,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:06:54,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:06:54,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:06:54,845 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) [2024-06-21 19:06:54,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:06:54,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:06:54,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:06:55,549 INFO L124 PetriNetUnfolderBase]: 936/1749 cut-off events. [2024-06-21 19:06:55,549 INFO L125 PetriNetUnfolderBase]: For 349031/349031 co-relation queries the response was YES. [2024-06-21 19:06:55,568 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. [2024-06-21 19:06:55,573 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 387 selfloop transitions, 19 changer transitions 8/416 dead transitions. [2024-06-21 19:06:55,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 526 places, 416 transitions, 7099 flow [2024-06-21 19:06:55,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:06:55,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:06:55,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 112 transitions. [2024-06-21 19:06:55,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3284457478005865 [2024-06-21 19:06:55,574 INFO L175 Difference]: Start difference. First operand has 516 places, 399 transitions, 6097 flow. Second operand 11 states and 112 transitions. [2024-06-21 19:06:55,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 526 places, 416 transitions, 7099 flow [2024-06-21 19:06:56,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 517 places, 416 transitions, 6831 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-21 19:06:56,760 INFO L231 Difference]: Finished difference. Result has 519 places, 397 transitions, 5885 flow [2024-06-21 19:06:56,760 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} [2024-06-21 19:06:56,761 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 489 predicate places. [2024-06-21 19:06:56,761 INFO L495 AbstractCegarLoop]: Abstraction has has 519 places, 397 transitions, 5885 flow [2024-06-21 19:06:56,761 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) [2024-06-21 19:06:56,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:06:56,761 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:06:56,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-21 19:06:56,761 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)] === [2024-06-21 19:06:56,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:06:56,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1983381541, now seen corresponding path program 4 times [2024-06-21 19:06:56,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:06:56,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364600830] [2024-06-21 19:06:56,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:06:56,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:06:56,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:06:58,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:06:58,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:06:58,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364600830] [2024-06-21 19:06:58,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364600830] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:06:58,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:06:58,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:06:58,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231152260] [2024-06-21 19:06:58,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:06:58,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:06:58,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:06:58,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:06:58,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:06:58,162 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:06:58,162 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) [2024-06-21 19:06:58,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:06:58,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:06:58,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:06:58,674 INFO L124 PetriNetUnfolderBase]: 910/1698 cut-off events. [2024-06-21 19:06:58,675 INFO L125 PetriNetUnfolderBase]: For 236753/236753 co-relation queries the response was YES. [2024-06-21 19:06:58,695 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. [2024-06-21 19:06:58,700 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 386 selfloop transitions, 22 changer transitions 0/410 dead transitions. [2024-06-21 19:06:58,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 529 places, 410 transitions, 7039 flow [2024-06-21 19:06:58,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:06:58,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:06:58,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 107 transitions. [2024-06-21 19:06:58,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31378299120234604 [2024-06-21 19:06:58,702 INFO L175 Difference]: Start difference. First operand has 519 places, 397 transitions, 5885 flow. Second operand 11 states and 107 transitions. [2024-06-21 19:06:58,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 529 places, 410 transitions, 7039 flow [2024-06-21 19:06:59,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 517 places, 410 transitions, 6948 flow, removed 20 selfloop flow, removed 12 redundant places. [2024-06-21 19:06:59,819 INFO L231 Difference]: Finished difference. Result has 518 places, 399 transitions, 5891 flow [2024-06-21 19:06:59,819 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} [2024-06-21 19:06:59,819 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 488 predicate places. [2024-06-21 19:06:59,819 INFO L495 AbstractCegarLoop]: Abstraction has has 518 places, 399 transitions, 5891 flow [2024-06-21 19:06:59,820 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) [2024-06-21 19:06:59,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:06:59,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:06:59,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-21 19:06:59,820 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)] === [2024-06-21 19:06:59,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:06:59,820 INFO L85 PathProgramCache]: Analyzing trace with hash 553608227, now seen corresponding path program 6 times [2024-06-21 19:06:59,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:06:59,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18886298] [2024-06-21 19:06:59,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:06:59,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:06:59,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:07:01,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:07:01,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:07:01,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18886298] [2024-06-21 19:07:01,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18886298] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:07:01,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:07:01,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:07:01,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104740164] [2024-06-21 19:07:01,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:07:01,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:07:01,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:07:01,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:07:01,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:07:01,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:07:01,370 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) [2024-06-21 19:07:01,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:07:01,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:07:01,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:07:01,886 INFO L124 PetriNetUnfolderBase]: 908/1695 cut-off events. [2024-06-21 19:07:01,886 INFO L125 PetriNetUnfolderBase]: For 227395/227395 co-relation queries the response was YES. [2024-06-21 19:07:01,906 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. [2024-06-21 19:07:01,911 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 388 selfloop transitions, 18 changer transitions 0/408 dead transitions. [2024-06-21 19:07:01,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 527 places, 408 transitions, 6723 flow [2024-06-21 19:07:01,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:07:01,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:07:01,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 97 transitions. [2024-06-21 19:07:01,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31290322580645163 [2024-06-21 19:07:01,913 INFO L175 Difference]: Start difference. First operand has 518 places, 399 transitions, 5891 flow. Second operand 10 states and 97 transitions. [2024-06-21 19:07:01,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 527 places, 408 transitions, 6723 flow [2024-06-21 19:07:02,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 518 places, 408 transitions, 6608 flow, removed 36 selfloop flow, removed 9 redundant places. [2024-06-21 19:07:02,979 INFO L231 Difference]: Finished difference. Result has 519 places, 399 transitions, 5817 flow [2024-06-21 19:07:02,979 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} [2024-06-21 19:07:02,979 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 489 predicate places. [2024-06-21 19:07:02,979 INFO L495 AbstractCegarLoop]: Abstraction has has 519 places, 399 transitions, 5817 flow [2024-06-21 19:07:02,980 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) [2024-06-21 19:07:02,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:07:02,980 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:07:02,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-21 19:07:02,980 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)] === [2024-06-21 19:07:02,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:07:02,980 INFO L85 PathProgramCache]: Analyzing trace with hash -2039674517, now seen corresponding path program 7 times [2024-06-21 19:07:02,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:07:02,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677859704] [2024-06-21 19:07:02,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:07:02,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:07:02,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:07:04,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:07:04,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:07:04,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677859704] [2024-06-21 19:07:04,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677859704] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:07:04,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:07:04,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:07:04,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959862420] [2024-06-21 19:07:04,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:07:04,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:07:04,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:07:04,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:07:04,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:07:04,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:07:04,296 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) [2024-06-21 19:07:04,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:07:04,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:07:04,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:07:04,863 INFO L124 PetriNetUnfolderBase]: 906/1692 cut-off events. [2024-06-21 19:07:04,863 INFO L125 PetriNetUnfolderBase]: For 222939/222939 co-relation queries the response was YES. [2024-06-21 19:07:04,883 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. [2024-06-21 19:07:04,887 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 279 selfloop transitions, 130 changer transitions 0/411 dead transitions. [2024-06-21 19:07:04,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 528 places, 411 transitions, 7477 flow [2024-06-21 19:07:04,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:07:04,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:07:04,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-21 19:07:04,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4129032258064516 [2024-06-21 19:07:04,889 INFO L175 Difference]: Start difference. First operand has 519 places, 399 transitions, 5817 flow. Second operand 10 states and 128 transitions. [2024-06-21 19:07:04,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 528 places, 411 transitions, 7477 flow [2024-06-21 19:07:05,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 518 places, 411 transitions, 7389 flow, removed 22 selfloop flow, removed 10 redundant places. [2024-06-21 19:07:05,911 INFO L231 Difference]: Finished difference. Result has 519 places, 399 transitions, 6001 flow [2024-06-21 19:07:05,911 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} [2024-06-21 19:07:05,912 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 489 predicate places. [2024-06-21 19:07:05,912 INFO L495 AbstractCegarLoop]: Abstraction has has 519 places, 399 transitions, 6001 flow [2024-06-21 19:07:05,912 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) [2024-06-21 19:07:05,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:07:05,912 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:07:05,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-21 19:07:05,912 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)] === [2024-06-21 19:07:05,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:07:05,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1912458315, now seen corresponding path program 5 times [2024-06-21 19:07:05,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:07:05,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44343858] [2024-06-21 19:07:05,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:07:05,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:07:05,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:07:07,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:07:07,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:07:07,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44343858] [2024-06-21 19:07:07,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44343858] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:07:07,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:07:07,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:07:07,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900091999] [2024-06-21 19:07:07,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:07:07,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:07:07,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:07:07,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:07:07,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:07:07,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:07:07,409 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) [2024-06-21 19:07:07,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:07:07,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:07:07,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:07:08,065 INFO L124 PetriNetUnfolderBase]: 910/1700 cut-off events. [2024-06-21 19:07:08,065 INFO L125 PetriNetUnfolderBase]: For 232311/232311 co-relation queries the response was YES. [2024-06-21 19:07:08,081 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. [2024-06-21 19:07:08,085 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 386 selfloop transitions, 25 changer transitions 0/413 dead transitions. [2024-06-21 19:07:08,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 531 places, 413 transitions, 6889 flow [2024-06-21 19:07:08,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 19:07:08,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 19:07:08,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 119 transitions. [2024-06-21 19:07:08,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29528535980148884 [2024-06-21 19:07:08,086 INFO L175 Difference]: Start difference. First operand has 519 places, 399 transitions, 6001 flow. Second operand 13 states and 119 transitions. [2024-06-21 19:07:08,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 531 places, 413 transitions, 6889 flow [2024-06-21 19:07:09,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 522 places, 413 transitions, 6629 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-21 19:07:09,120 INFO L231 Difference]: Finished difference. Result has 523 places, 400 transitions, 5835 flow [2024-06-21 19:07:09,120 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} [2024-06-21 19:07:09,123 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 493 predicate places. [2024-06-21 19:07:09,123 INFO L495 AbstractCegarLoop]: Abstraction has has 523 places, 400 transitions, 5835 flow [2024-06-21 19:07:09,123 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) [2024-06-21 19:07:09,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:07:09,123 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:07:09,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-21 19:07:09,124 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)] === [2024-06-21 19:07:09,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:07:09,124 INFO L85 PathProgramCache]: Analyzing trace with hash -2064209463, now seen corresponding path program 8 times [2024-06-21 19:07:09,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:07:09,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406786514] [2024-06-21 19:07:09,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:07:09,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:07:09,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:07:10,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:07:10,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:07:10,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406786514] [2024-06-21 19:07:10,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406786514] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:07:10,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:07:10,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:07:10,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139541122] [2024-06-21 19:07:10,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:07:10,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:07:10,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:07:10,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:07:10,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:07:10,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:07:10,474 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) [2024-06-21 19:07:10,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:07:10,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:07:10,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:07:10,970 INFO L124 PetriNetUnfolderBase]: 913/1706 cut-off events. [2024-06-21 19:07:10,970 INFO L125 PetriNetUnfolderBase]: For 223886/223886 co-relation queries the response was YES. [2024-06-21 19:07:10,992 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. [2024-06-21 19:07:10,998 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 257 selfloop transitions, 153 changer transitions 1/413 dead transitions. [2024-06-21 19:07:10,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 531 places, 413 transitions, 7272 flow [2024-06-21 19:07:10,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:07:10,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:07:10,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-21 19:07:10,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43010752688172044 [2024-06-21 19:07:10,999 INFO L175 Difference]: Start difference. First operand has 523 places, 400 transitions, 5835 flow. Second operand 9 states and 120 transitions. [2024-06-21 19:07:10,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 531 places, 413 transitions, 7272 flow [2024-06-21 19:07:12,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 520 places, 413 transitions, 7188 flow, removed 18 selfloop flow, removed 11 redundant places. [2024-06-21 19:07:12,047 INFO L231 Difference]: Finished difference. Result has 521 places, 401 transitions, 6094 flow [2024-06-21 19:07:12,047 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} [2024-06-21 19:07:12,047 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 491 predicate places. [2024-06-21 19:07:12,047 INFO L495 AbstractCegarLoop]: Abstraction has has 521 places, 401 transitions, 6094 flow [2024-06-21 19:07:12,047 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) [2024-06-21 19:07:12,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:07:12,047 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:07:12,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-21 19:07:12,048 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)] === [2024-06-21 19:07:12,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:07:12,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1958266533, now seen corresponding path program 6 times [2024-06-21 19:07:12,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:07:12,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145090503] [2024-06-21 19:07:12,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:07:12,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:07:12,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:07:13,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:07:13,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:07:13,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145090503] [2024-06-21 19:07:13,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145090503] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:07:13,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:07:13,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:07:13,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560414631] [2024-06-21 19:07:13,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:07:13,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:07:13,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:07:13,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:07:13,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:07:13,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-21 19:07:13,187 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) [2024-06-21 19:07:13,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:07:13,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-21 19:07:13,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:07:13,735 INFO L124 PetriNetUnfolderBase]: 937/1764 cut-off events. [2024-06-21 19:07:13,735 INFO L125 PetriNetUnfolderBase]: For 337538/337538 co-relation queries the response was YES. [2024-06-21 19:07:13,757 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. [2024-06-21 19:07:13,762 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 283 selfloop transitions, 129 changer transitions 8/423 dead transitions. [2024-06-21 19:07:13,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 530 places, 423 transitions, 8004 flow [2024-06-21 19:07:13,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:07:13,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:07:13,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 146 transitions. [2024-06-21 19:07:13,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47096774193548385 [2024-06-21 19:07:13,763 INFO L175 Difference]: Start difference. First operand has 521 places, 401 transitions, 6094 flow. Second operand 10 states and 146 transitions. [2024-06-21 19:07:13,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 530 places, 423 transitions, 8004 flow [2024-06-21 19:07:14,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 522 places, 423 transitions, 7662 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-21 19:07:14,924 INFO L231 Difference]: Finished difference. Result has 524 places, 398 transitions, 6078 flow [2024-06-21 19:07:14,924 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} [2024-06-21 19:07:14,925 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 494 predicate places. [2024-06-21 19:07:14,925 INFO L495 AbstractCegarLoop]: Abstraction has has 524 places, 398 transitions, 6078 flow [2024-06-21 19:07:14,925 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) [2024-06-21 19:07:14,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:07:14,925 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:07:14,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-21 19:07:14,925 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)] === [2024-06-21 19:07:14,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:07:14,926 INFO L85 PathProgramCache]: Analyzing trace with hash -2039665899, now seen corresponding path program 5 times [2024-06-21 19:07:14,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:07:14,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968809689] [2024-06-21 19:07:14,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:07:14,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:07:14,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:07:16,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:07:16,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:07:16,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968809689] [2024-06-21 19:07:16,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968809689] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:07:16,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:07:16,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:07:16,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030156425] [2024-06-21 19:07:16,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:07:16,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:07:16,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:07:16,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:07:16,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:07:16,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:07:16,224 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) [2024-06-21 19:07:16,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:07:16,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:07:16,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:07:16,717 INFO L124 PetriNetUnfolderBase]: 923/1746 cut-off events. [2024-06-21 19:07:16,717 INFO L125 PetriNetUnfolderBase]: For 240946/240946 co-relation queries the response was YES. [2024-06-21 19:07:16,740 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. [2024-06-21 19:07:16,745 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 300 selfloop transitions, 109 changer transitions 0/411 dead transitions. [2024-06-21 19:07:16,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 533 places, 411 transitions, 7010 flow [2024-06-21 19:07:16,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:07:16,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:07:16,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-21 19:07:16,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-21 19:07:16,746 INFO L175 Difference]: Start difference. First operand has 524 places, 398 transitions, 6078 flow. Second operand 10 states and 125 transitions. [2024-06-21 19:07:16,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 533 places, 411 transitions, 7010 flow [2024-06-21 19:07:17,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 527 places, 411 transitions, 6756 flow, removed 40 selfloop flow, removed 6 redundant places. [2024-06-21 19:07:17,846 INFO L231 Difference]: Finished difference. Result has 528 places, 400 transitions, 6115 flow [2024-06-21 19:07:17,846 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} [2024-06-21 19:07:17,846 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 498 predicate places. [2024-06-21 19:07:17,846 INFO L495 AbstractCegarLoop]: Abstraction has has 528 places, 400 transitions, 6115 flow [2024-06-21 19:07:17,848 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) [2024-06-21 19:07:17,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:07:17,848 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:07:17,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-21 19:07:17,849 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)] === [2024-06-21 19:07:17,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:07:17,849 INFO L85 PathProgramCache]: Analyzing trace with hash -2039911853, now seen corresponding path program 34 times [2024-06-21 19:07:17,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:07:17,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584019970] [2024-06-21 19:07:17,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:07:17,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:07:17,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:07:19,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:07:19,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:07:19,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584019970] [2024-06-21 19:07:19,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584019970] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:07:19,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:07:19,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:07:19,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966567758] [2024-06-21 19:07:19,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:07:19,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:07:19,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:07:19,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:07:19,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:07:19,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:07:19,258 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) [2024-06-21 19:07:19,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:07:19,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:07:19,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:07:19,805 INFO L124 PetriNetUnfolderBase]: 927/1754 cut-off events. [2024-06-21 19:07:19,805 INFO L125 PetriNetUnfolderBase]: For 246957/246957 co-relation queries the response was YES. [2024-06-21 19:07:19,827 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. [2024-06-21 19:07:19,841 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 278 selfloop transitions, 131 changer transitions 0/411 dead transitions. [2024-06-21 19:07:19,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 538 places, 411 transitions, 7027 flow [2024-06-21 19:07:19,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:07:19,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:07:19,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-21 19:07:19,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3519061583577713 [2024-06-21 19:07:19,856 INFO L175 Difference]: Start difference. First operand has 528 places, 400 transitions, 6115 flow. Second operand 11 states and 120 transitions. [2024-06-21 19:07:19,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 538 places, 411 transitions, 7027 flow [2024-06-21 19:07:21,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 530 places, 411 transitions, 6752 flow, removed 30 selfloop flow, removed 8 redundant places. [2024-06-21 19:07:21,080 INFO L231 Difference]: Finished difference. Result has 531 places, 401 transitions, 6180 flow [2024-06-21 19:07:21,080 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} [2024-06-21 19:07:21,080 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 501 predicate places. [2024-06-21 19:07:21,081 INFO L495 AbstractCegarLoop]: Abstraction has has 531 places, 401 transitions, 6180 flow [2024-06-21 19:07:21,081 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) [2024-06-21 19:07:21,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:07:21,081 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:07:21,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-21 19:07:21,081 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)] === [2024-06-21 19:07:21,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:07:21,081 INFO L85 PathProgramCache]: Analyzing trace with hash -2064200845, now seen corresponding path program 6 times [2024-06-21 19:07:21,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:07:21,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825099601] [2024-06-21 19:07:21,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:07:21,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:07:21,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:07:22,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:07:22,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:07:22,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825099601] [2024-06-21 19:07:22,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825099601] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:07:22,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:07:22,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:07:22,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308792881] [2024-06-21 19:07:22,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:07:22,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:07:22,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:07:22,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:07:22,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:07:22,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:07:22,445 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) [2024-06-21 19:07:22,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:07:22,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:07:22,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:07:23,105 INFO L124 PetriNetUnfolderBase]: 937/1771 cut-off events. [2024-06-21 19:07:23,106 INFO L125 PetriNetUnfolderBase]: For 250223/250223 co-relation queries the response was YES. [2024-06-21 19:07:23,123 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. [2024-06-21 19:07:23,127 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 289 selfloop transitions, 129 changer transitions 0/420 dead transitions. [2024-06-21 19:07:23,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 541 places, 420 transitions, 7481 flow [2024-06-21 19:07:23,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:07:23,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:07:23,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-21 19:07:23,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2024-06-21 19:07:23,129 INFO L175 Difference]: Start difference. First operand has 531 places, 401 transitions, 6180 flow. Second operand 11 states and 136 transitions. [2024-06-21 19:07:23,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 541 places, 420 transitions, 7481 flow [2024-06-21 19:07:24,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 532 places, 420 transitions, 7151 flow, removed 35 selfloop flow, removed 9 redundant places. [2024-06-21 19:07:24,408 INFO L231 Difference]: Finished difference. Result has 534 places, 406 transitions, 6249 flow [2024-06-21 19:07:24,408 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} [2024-06-21 19:07:24,410 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 504 predicate places. [2024-06-21 19:07:24,410 INFO L495 AbstractCegarLoop]: Abstraction has has 534 places, 406 transitions, 6249 flow [2024-06-21 19:07:24,410 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) [2024-06-21 19:07:24,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:07:24,410 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:07:24,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-21 19:07:24,410 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)] === [2024-06-21 19:07:24,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:07:24,411 INFO L85 PathProgramCache]: Analyzing trace with hash -2015840831, now seen corresponding path program 9 times [2024-06-21 19:07:24,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:07:24,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799014789] [2024-06-21 19:07:24,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:07:24,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:07:24,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:07:25,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:07:25,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:07:25,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799014789] [2024-06-21 19:07:25,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799014789] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:07:25,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:07:25,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:07:25,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141189245] [2024-06-21 19:07:25,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:07:25,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:07:25,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:07:25,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:07:25,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:07:25,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-21 19:07:25,730 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) [2024-06-21 19:07:25,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:07:25,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-21 19:07:25,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:07:26,247 INFO L124 PetriNetUnfolderBase]: 940/1776 cut-off events. [2024-06-21 19:07:26,247 INFO L125 PetriNetUnfolderBase]: For 242535/242535 co-relation queries the response was YES. [2024-06-21 19:07:26,270 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. [2024-06-21 19:07:26,276 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 306 selfloop transitions, 110 changer transitions 0/419 dead transitions. [2024-06-21 19:07:26,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 542 places, 419 transitions, 7723 flow [2024-06-21 19:07:26,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:07:26,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:07:26,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 132 transitions. [2024-06-21 19:07:26,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4731182795698925 [2024-06-21 19:07:26,278 INFO L175 Difference]: Start difference. First operand has 534 places, 406 transitions, 6249 flow. Second operand 9 states and 132 transitions. [2024-06-21 19:07:26,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 542 places, 419 transitions, 7723 flow [2024-06-21 19:07:27,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 534 places, 419 transitions, 7415 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-06-21 19:07:27,516 INFO L231 Difference]: Finished difference. Result has 535 places, 408 transitions, 6222 flow [2024-06-21 19:07:27,517 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} [2024-06-21 19:07:27,517 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 505 predicate places. [2024-06-21 19:07:27,517 INFO L495 AbstractCegarLoop]: Abstraction has has 535 places, 408 transitions, 6222 flow [2024-06-21 19:07:27,517 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) [2024-06-21 19:07:27,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:07:27,517 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:07:27,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-21 19:07:27,518 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)] === [2024-06-21 19:07:27,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:07:27,518 INFO L85 PathProgramCache]: Analyzing trace with hash 291967307, now seen corresponding path program 7 times [2024-06-21 19:07:27,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:07:27,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875089378] [2024-06-21 19:07:27,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:07:27,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:07:27,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:07:28,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:07:28,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:07:28,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875089378] [2024-06-21 19:07:28,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875089378] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:07:28,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:07:28,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:07:28,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008348534] [2024-06-21 19:07:28,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:07:28,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:07:28,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:07:28,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:07:28,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:07:28,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:07:28,765 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) [2024-06-21 19:07:28,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:07:28,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:07:28,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:07:29,269 INFO L124 PetriNetUnfolderBase]: 941/1779 cut-off events. [2024-06-21 19:07:29,269 INFO L125 PetriNetUnfolderBase]: For 255872/255872 co-relation queries the response was YES. [2024-06-21 19:07:29,292 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. [2024-06-21 19:07:29,298 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 319 selfloop transitions, 101 changer transitions 0/422 dead transitions. [2024-06-21 19:07:29,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 544 places, 422 transitions, 7146 flow [2024-06-21 19:07:29,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:07:29,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:07:29,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-21 19:07:29,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4064516129032258 [2024-06-21 19:07:29,299 INFO L175 Difference]: Start difference. First operand has 535 places, 408 transitions, 6222 flow. Second operand 10 states and 126 transitions. [2024-06-21 19:07:29,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 544 places, 422 transitions, 7146 flow [2024-06-21 19:07:30,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 535 places, 422 transitions, 6745 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-21 19:07:30,508 INFO L231 Difference]: Finished difference. Result has 537 places, 411 transitions, 6100 flow [2024-06-21 19:07:30,508 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} [2024-06-21 19:07:30,508 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 507 predicate places. [2024-06-21 19:07:30,509 INFO L495 AbstractCegarLoop]: Abstraction has has 537 places, 411 transitions, 6100 flow [2024-06-21 19:07:30,509 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) [2024-06-21 19:07:30,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:07:30,509 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:07:30,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-21 19:07:30,509 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)] === [2024-06-21 19:07:30,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:07:30,509 INFO L85 PathProgramCache]: Analyzing trace with hash -2064440103, now seen corresponding path program 10 times [2024-06-21 19:07:30,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:07:30,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627012286] [2024-06-21 19:07:30,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:07:30,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:07:30,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:07:31,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:07:31,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:07:31,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627012286] [2024-06-21 19:07:31,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627012286] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:07:31,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:07:31,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:07:31,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636538138] [2024-06-21 19:07:31,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:07:31,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:07:31,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:07:31,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:07:31,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:07:31,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:07:31,989 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) [2024-06-21 19:07:31,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:07:31,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:07:31,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:07:32,496 INFO L124 PetriNetUnfolderBase]: 933/1759 cut-off events. [2024-06-21 19:07:32,497 INFO L125 PetriNetUnfolderBase]: For 213728/213728 co-relation queries the response was YES. [2024-06-21 19:07:32,518 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. [2024-06-21 19:07:32,523 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 262 selfloop transitions, 151 changer transitions 6/421 dead transitions. [2024-06-21 19:07:32,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 545 places, 421 transitions, 7244 flow [2024-06-21 19:07:32,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:07:32,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:07:32,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-21 19:07:32,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-21 19:07:32,525 INFO L175 Difference]: Start difference. First operand has 537 places, 411 transitions, 6100 flow. Second operand 9 states and 117 transitions. [2024-06-21 19:07:32,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 545 places, 421 transitions, 7244 flow [2024-06-21 19:07:33,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 539 places, 421 transitions, 6971 flow, removed 77 selfloop flow, removed 6 redundant places. [2024-06-21 19:07:33,678 INFO L231 Difference]: Finished difference. Result has 540 places, 405 transitions, 6071 flow [2024-06-21 19:07:33,678 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} [2024-06-21 19:07:33,679 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 510 predicate places. [2024-06-21 19:07:33,679 INFO L495 AbstractCegarLoop]: Abstraction has has 540 places, 405 transitions, 6071 flow [2024-06-21 19:07:33,679 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) [2024-06-21 19:07:33,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:07:33,679 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:07:33,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-21 19:07:33,679 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)] === [2024-06-21 19:07:33,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:07:33,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1616636661, now seen corresponding path program 35 times [2024-06-21 19:07:33,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:07:33,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79168907] [2024-06-21 19:07:33,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:07:33,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:07:33,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:07:35,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:07:35,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:07:35,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79168907] [2024-06-21 19:07:35,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79168907] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:07:35,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:07:35,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:07:35,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360788910] [2024-06-21 19:07:35,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:07:35,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:07:35,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:07:35,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:07:35,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:07:35,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:07:35,179 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) [2024-06-21 19:07:35,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:07:35,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:07:35,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:07:35,723 INFO L124 PetriNetUnfolderBase]: 915/1725 cut-off events. [2024-06-21 19:07:35,723 INFO L125 PetriNetUnfolderBase]: For 217271/217271 co-relation queries the response was YES. [2024-06-21 19:07:35,745 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. [2024-06-21 19:07:35,750 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 258 selfloop transitions, 156 changer transitions 0/416 dead transitions. [2024-06-21 19:07:35,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 550 places, 416 transitions, 6995 flow [2024-06-21 19:07:35,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:07:35,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:07:35,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-21 19:07:35,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34310850439882695 [2024-06-21 19:07:35,751 INFO L175 Difference]: Start difference. First operand has 540 places, 405 transitions, 6071 flow. Second operand 11 states and 117 transitions. [2024-06-21 19:07:35,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 550 places, 416 transitions, 6995 flow [2024-06-21 19:07:36,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 537 places, 416 transitions, 6601 flow, removed 16 selfloop flow, removed 13 redundant places. [2024-06-21 19:07:36,938 INFO L231 Difference]: Finished difference. Result has 538 places, 406 transitions, 6069 flow [2024-06-21 19:07:36,938 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} [2024-06-21 19:07:36,938 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 508 predicate places. [2024-06-21 19:07:36,938 INFO L495 AbstractCegarLoop]: Abstraction has has 538 places, 406 transitions, 6069 flow [2024-06-21 19:07:36,939 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) [2024-06-21 19:07:36,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:07:36,939 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:07:36,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-21 19:07:36,939 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)] === [2024-06-21 19:07:36,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:07:36,940 INFO L85 PathProgramCache]: Analyzing trace with hash -2046345593, now seen corresponding path program 36 times [2024-06-21 19:07:36,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:07:36,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656167002] [2024-06-21 19:07:36,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:07:36,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:07:36,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:07:38,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:07:38,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:07:38,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656167002] [2024-06-21 19:07:38,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656167002] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:07:38,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:07:38,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:07:38,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789600006] [2024-06-21 19:07:38,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:07:38,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:07:38,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:07:38,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:07:38,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:07:38,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:07:38,476 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) [2024-06-21 19:07:38,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:07:38,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:07:38,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:07:39,034 INFO L124 PetriNetUnfolderBase]: 930/1754 cut-off events. [2024-06-21 19:07:39,034 INFO L125 PetriNetUnfolderBase]: For 233021/233021 co-relation queries the response was YES. [2024-06-21 19:07:39,056 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. [2024-06-21 19:07:39,062 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 285 selfloop transitions, 134 changer transitions 0/421 dead transitions. [2024-06-21 19:07:39,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 547 places, 421 transitions, 7363 flow [2024-06-21 19:07:39,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:07:39,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:07:39,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-21 19:07:39,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36774193548387096 [2024-06-21 19:07:39,063 INFO L175 Difference]: Start difference. First operand has 538 places, 406 transitions, 6069 flow. Second operand 10 states and 114 transitions. [2024-06-21 19:07:39,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 547 places, 421 transitions, 7363 flow [2024-06-21 19:07:40,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 536 places, 421 transitions, 6974 flow, removed 36 selfloop flow, removed 11 redundant places. [2024-06-21 19:07:40,223 INFO L231 Difference]: Finished difference. Result has 538 places, 409 transitions, 6114 flow [2024-06-21 19:07:40,224 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} [2024-06-21 19:07:40,224 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 508 predicate places. [2024-06-21 19:07:40,224 INFO L495 AbstractCegarLoop]: Abstraction has has 538 places, 409 transitions, 6114 flow [2024-06-21 19:07:40,224 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) [2024-06-21 19:07:40,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:07:40,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:07:40,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-21 19:07:40,225 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)] === [2024-06-21 19:07:40,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:07:40,225 INFO L85 PathProgramCache]: Analyzing trace with hash -2015841017, now seen corresponding path program 37 times [2024-06-21 19:07:40,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:07:40,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308698435] [2024-06-21 19:07:40,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:07:40,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:07:40,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:07:41,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:07:41,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:07:41,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308698435] [2024-06-21 19:07:41,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308698435] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:07:41,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:07:41,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:07:41,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176677658] [2024-06-21 19:07:41,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:07:41,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:07:41,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:07:41,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:07:41,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:07:41,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:07:41,793 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) [2024-06-21 19:07:41,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:07:41,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:07:41,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:07:42,397 INFO L124 PetriNetUnfolderBase]: 934/1762 cut-off events. [2024-06-21 19:07:42,397 INFO L125 PetriNetUnfolderBase]: For 236421/236421 co-relation queries the response was YES. [2024-06-21 19:07:42,420 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. [2024-06-21 19:07:42,426 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 303 selfloop transitions, 115 changer transitions 0/420 dead transitions. [2024-06-21 19:07:42,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 548 places, 420 transitions, 7046 flow [2024-06-21 19:07:42,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:07:42,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:07:42,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-21 19:07:42,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35777126099706746 [2024-06-21 19:07:42,428 INFO L175 Difference]: Start difference. First operand has 538 places, 409 transitions, 6114 flow. Second operand 11 states and 122 transitions. [2024-06-21 19:07:42,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 548 places, 420 transitions, 7046 flow [2024-06-21 19:07:43,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 542 places, 420 transitions, 6783 flow, removed 47 selfloop flow, removed 6 redundant places. [2024-06-21 19:07:43,650 INFO L231 Difference]: Finished difference. Result has 543 places, 410 transitions, 6161 flow [2024-06-21 19:07:43,650 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} [2024-06-21 19:07:43,650 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 513 predicate places. [2024-06-21 19:07:43,650 INFO L495 AbstractCegarLoop]: Abstraction has has 543 places, 410 transitions, 6161 flow [2024-06-21 19:07:43,651 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) [2024-06-21 19:07:43,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:07:43,651 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:07:43,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-21 19:07:43,651 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)] === [2024-06-21 19:07:43,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:07:43,651 INFO L85 PathProgramCache]: Analyzing trace with hash -2046340943, now seen corresponding path program 38 times [2024-06-21 19:07:43,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:07:43,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090216435] [2024-06-21 19:07:43,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:07:43,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:07:43,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:07:45,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:07:45,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:07:45,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090216435] [2024-06-21 19:07:45,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090216435] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:07:45,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:07:45,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:07:45,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450651878] [2024-06-21 19:07:45,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:07:45,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:07:45,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:07:45,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:07:45,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:07:45,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:07:45,266 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) [2024-06-21 19:07:45,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:07:45,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:07:45,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:07:45,873 INFO L124 PetriNetUnfolderBase]: 931/1757 cut-off events. [2024-06-21 19:07:45,874 INFO L125 PetriNetUnfolderBase]: For 215851/215851 co-relation queries the response was YES. [2024-06-21 19:07:45,896 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. [2024-06-21 19:07:45,902 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 286 selfloop transitions, 132 changer transitions 0/420 dead transitions. [2024-06-21 19:07:45,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 552 places, 420 transitions, 7019 flow [2024-06-21 19:07:45,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:07:45,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:07:45,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-21 19:07:45,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36451612903225805 [2024-06-21 19:07:45,903 INFO L175 Difference]: Start difference. First operand has 543 places, 410 transitions, 6161 flow. Second operand 10 states and 113 transitions. [2024-06-21 19:07:45,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 552 places, 420 transitions, 7019 flow [2024-06-21 19:07:47,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 543 places, 420 transitions, 6675 flow, removed 58 selfloop flow, removed 9 redundant places. [2024-06-21 19:07:47,182 INFO L231 Difference]: Finished difference. Result has 544 places, 410 transitions, 6085 flow [2024-06-21 19:07:47,182 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} [2024-06-21 19:07:47,183 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 514 predicate places. [2024-06-21 19:07:47,183 INFO L495 AbstractCegarLoop]: Abstraction has has 544 places, 410 transitions, 6085 flow [2024-06-21 19:07:47,183 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) [2024-06-21 19:07:47,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:07:47,183 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:07:47,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-21 19:07:47,183 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)] === [2024-06-21 19:07:47,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:07:47,184 INFO L85 PathProgramCache]: Analyzing trace with hash -217460341, now seen corresponding path program 11 times [2024-06-21 19:07:47,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:07:47,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493738330] [2024-06-21 19:07:47,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:07:47,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:07:47,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:07:48,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:07:48,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:07:48,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493738330] [2024-06-21 19:07:48,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493738330] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:07:48,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:07:48,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:07:48,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218133770] [2024-06-21 19:07:48,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:07:48,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:07:48,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:07:48,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:07:48,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:07:48,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:07:48,748 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) [2024-06-21 19:07:48,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:07:48,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:07:48,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:07:49,298 INFO L124 PetriNetUnfolderBase]: 926/1742 cut-off events. [2024-06-21 19:07:49,298 INFO L125 PetriNetUnfolderBase]: For 193983/193983 co-relation queries the response was YES. [2024-06-21 19:07:49,319 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. [2024-06-21 19:07:49,324 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 288 selfloop transitions, 127 changer transitions 3/420 dead transitions. [2024-06-21 19:07:49,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 552 places, 420 transitions, 7229 flow [2024-06-21 19:07:49,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:07:49,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:07:49,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-21 19:07:49,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4229390681003584 [2024-06-21 19:07:49,326 INFO L175 Difference]: Start difference. First operand has 544 places, 410 transitions, 6085 flow. Second operand 9 states and 118 transitions. [2024-06-21 19:07:49,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 552 places, 420 transitions, 7229 flow [2024-06-21 19:07:50,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 544 places, 420 transitions, 6929 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-21 19:07:50,401 INFO L231 Difference]: Finished difference. Result has 545 places, 407 transitions, 6017 flow [2024-06-21 19:07:50,402 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} [2024-06-21 19:07:50,402 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 515 predicate places. [2024-06-21 19:07:50,402 INFO L495 AbstractCegarLoop]: Abstraction has has 545 places, 407 transitions, 6017 flow [2024-06-21 19:07:50,402 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) [2024-06-21 19:07:50,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:07:50,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:07:50,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-21 19:07:50,403 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)] === [2024-06-21 19:07:50,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:07:50,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1927948515, now seen corresponding path program 12 times [2024-06-21 19:07:50,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:07:50,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696766288] [2024-06-21 19:07:50,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:07:50,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:07:50,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:07:51,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:07:51,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:07:51,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696766288] [2024-06-21 19:07:51,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696766288] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:07:51,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:07:51,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:07:51,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006349815] [2024-06-21 19:07:51,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:07:51,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:07:51,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:07:51,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:07:51,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:07:51,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:07:51,892 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) [2024-06-21 19:07:51,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:07:51,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:07:51,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:07:52,479 INFO L124 PetriNetUnfolderBase]: 912/1712 cut-off events. [2024-06-21 19:07:52,480 INFO L125 PetriNetUnfolderBase]: For 195347/195347 co-relation queries the response was YES. [2024-06-21 19:07:52,501 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. [2024-06-21 19:07:52,506 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 300 selfloop transitions, 117 changer transitions 0/419 dead transitions. [2024-06-21 19:07:52,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 554 places, 419 transitions, 7215 flow [2024-06-21 19:07:52,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:07:52,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:07:52,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-21 19:07:52,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4096774193548387 [2024-06-21 19:07:52,508 INFO L175 Difference]: Start difference. First operand has 545 places, 407 transitions, 6017 flow. Second operand 10 states and 127 transitions. [2024-06-21 19:07:52,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 554 places, 419 transitions, 7215 flow [2024-06-21 19:07:53,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 541 places, 419 transitions, 6876 flow, removed 11 selfloop flow, removed 13 redundant places. [2024-06-21 19:07:53,519 INFO L231 Difference]: Finished difference. Result has 542 places, 409 transitions, 5976 flow [2024-06-21 19:07:53,519 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} [2024-06-21 19:07:53,520 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 512 predicate places. [2024-06-21 19:07:53,520 INFO L495 AbstractCegarLoop]: Abstraction has has 542 places, 409 transitions, 5976 flow [2024-06-21 19:07:53,520 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) [2024-06-21 19:07:53,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:07:53,520 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:07:53,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-21 19:07:53,520 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)] === [2024-06-21 19:07:53,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:07:53,521 INFO L85 PathProgramCache]: Analyzing trace with hash -2009584907, now seen corresponding path program 39 times [2024-06-21 19:07:53,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:07:53,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639428901] [2024-06-21 19:07:53,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:07:53,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:07:53,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:07:54,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:07:54,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:07:54,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639428901] [2024-06-21 19:07:54,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639428901] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:07:54,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:07:54,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:07:54,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530072442] [2024-06-21 19:07:54,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:07:54,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:07:54,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:07:54,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:07:54,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:07:55,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:07:55,007 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) [2024-06-21 19:07:55,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:07:55,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:07:55,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:07:55,565 INFO L124 PetriNetUnfolderBase]: 916/1720 cut-off events. [2024-06-21 19:07:55,565 INFO L125 PetriNetUnfolderBase]: For 205437/205437 co-relation queries the response was YES. [2024-06-21 19:07:55,586 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. [2024-06-21 19:07:55,591 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 301 selfloop transitions, 117 changer transitions 0/420 dead transitions. [2024-06-21 19:07:55,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 552 places, 420 transitions, 6910 flow [2024-06-21 19:07:55,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:07:55,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:07:55,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-21 19:07:55,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-21 19:07:55,592 INFO L175 Difference]: Start difference. First operand has 542 places, 409 transitions, 5976 flow. Second operand 11 states and 121 transitions. [2024-06-21 19:07:55,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 552 places, 420 transitions, 6910 flow [2024-06-21 19:07:56,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 543 places, 420 transitions, 6574 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-21 19:07:56,666 INFO L231 Difference]: Finished difference. Result has 544 places, 410 transitions, 5956 flow [2024-06-21 19:07:56,667 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} [2024-06-21 19:07:56,667 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 514 predicate places. [2024-06-21 19:07:56,667 INFO L495 AbstractCegarLoop]: Abstraction has has 544 places, 410 transitions, 5956 flow [2024-06-21 19:07:56,667 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) [2024-06-21 19:07:56,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:07:56,667 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:07:56,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-21 19:07:56,667 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)] === [2024-06-21 19:07:56,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:07:56,668 INFO L85 PathProgramCache]: Analyzing trace with hash 2108130899, now seen corresponding path program 40 times [2024-06-21 19:07:56,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:07:56,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763553244] [2024-06-21 19:07:56,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:07:56,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:07:56,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:07:58,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:07:58,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:07:58,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763553244] [2024-06-21 19:07:58,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763553244] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:07:58,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:07:58,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:07:58,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969118111] [2024-06-21 19:07:58,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:07:58,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:07:58,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:07:58,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:07:58,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:07:58,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:07:58,273 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) [2024-06-21 19:07:58,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:07:58,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:07:58,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:07:58,819 INFO L124 PetriNetUnfolderBase]: 924/1736 cut-off events. [2024-06-21 19:07:58,819 INFO L125 PetriNetUnfolderBase]: For 207892/207892 co-relation queries the response was YES. [2024-06-21 19:07:58,840 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. [2024-06-21 19:07:58,845 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 298 selfloop transitions, 125 changer transitions 0/425 dead transitions. [2024-06-21 19:07:58,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 553 places, 425 transitions, 7202 flow [2024-06-21 19:07:58,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:07:58,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:07:58,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-21 19:07:58,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-21 19:07:58,847 INFO L175 Difference]: Start difference. First operand has 544 places, 410 transitions, 5956 flow. Second operand 10 states and 115 transitions. [2024-06-21 19:07:58,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 553 places, 425 transitions, 7202 flow [2024-06-21 19:07:59,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 544 places, 425 transitions, 6896 flow, removed 37 selfloop flow, removed 9 redundant places. [2024-06-21 19:07:59,890 INFO L231 Difference]: Finished difference. Result has 546 places, 412 transitions, 5994 flow [2024-06-21 19:07:59,890 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} [2024-06-21 19:07:59,891 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 516 predicate places. [2024-06-21 19:07:59,891 INFO L495 AbstractCegarLoop]: Abstraction has has 546 places, 412 transitions, 5994 flow [2024-06-21 19:07:59,891 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) [2024-06-21 19:07:59,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:07:59,891 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:07:59,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-21 19:07:59,891 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)] === [2024-06-21 19:07:59,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:07:59,892 INFO L85 PathProgramCache]: Analyzing trace with hash -2009584721, now seen corresponding path program 13 times [2024-06-21 19:07:59,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:07:59,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755733018] [2024-06-21 19:07:59,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:07:59,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:07:59,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:08:01,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:08:01,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:08:01,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755733018] [2024-06-21 19:08:01,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755733018] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:08:01,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:08:01,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:08:01,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317352748] [2024-06-21 19:08:01,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:08:01,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:08:01,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:08:01,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:08:01,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:08:01,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-21 19:08:01,192 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) [2024-06-21 19:08:01,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:08:01,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-21 19:08:01,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:08:01,697 INFO L124 PetriNetUnfolderBase]: 922/1733 cut-off events. [2024-06-21 19:08:01,698 INFO L125 PetriNetUnfolderBase]: For 187665/187665 co-relation queries the response was YES. [2024-06-21 19:08:01,720 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. [2024-06-21 19:08:01,725 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 306 selfloop transitions, 112 changer transitions 0/421 dead transitions. [2024-06-21 19:08:01,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 554 places, 421 transitions, 6850 flow [2024-06-21 19:08:01,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:08:01,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:08:01,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 129 transitions. [2024-06-21 19:08:01,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46236559139784944 [2024-06-21 19:08:01,727 INFO L175 Difference]: Start difference. First operand has 546 places, 412 transitions, 5994 flow. Second operand 9 states and 129 transitions. [2024-06-21 19:08:01,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 554 places, 421 transitions, 6850 flow [2024-06-21 19:08:02,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 530 places, 421 transitions, 6204 flow, removed 84 selfloop flow, removed 24 redundant places. [2024-06-21 19:08:02,740 INFO L231 Difference]: Finished difference. Result has 531 places, 412 transitions, 5579 flow [2024-06-21 19:08:02,740 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} [2024-06-21 19:08:02,740 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 501 predicate places. [2024-06-21 19:08:02,740 INFO L495 AbstractCegarLoop]: Abstraction has has 531 places, 412 transitions, 5579 flow [2024-06-21 19:08:02,741 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) [2024-06-21 19:08:02,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:08:02,741 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:08:02,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-21 19:08:02,741 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)] === [2024-06-21 19:08:02,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:08:02,741 INFO L85 PathProgramCache]: Analyzing trace with hash -2016018647, now seen corresponding path program 41 times [2024-06-21 19:08:02,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:08:02,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296716565] [2024-06-21 19:08:02,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:08:02,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:08:02,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:08:04,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:08:04,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:08:04,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296716565] [2024-06-21 19:08:04,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296716565] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:08:04,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:08:04,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:08:04,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570422156] [2024-06-21 19:08:04,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:08:04,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:08:04,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:08:04,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:08:04,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:08:04,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:08:04,309 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) [2024-06-21 19:08:04,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:08:04,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:08:04,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:08:04,853 INFO L124 PetriNetUnfolderBase]: 919/1728 cut-off events. [2024-06-21 19:08:04,854 INFO L125 PetriNetUnfolderBase]: For 173817/173817 co-relation queries the response was YES. [2024-06-21 19:08:04,873 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. [2024-06-21 19:08:04,878 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 305 selfloop transitions, 116 changer transitions 0/423 dead transitions. [2024-06-21 19:08:04,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 540 places, 423 transitions, 6445 flow [2024-06-21 19:08:04,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:08:04,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:08:04,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-21 19:08:04,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3774193548387097 [2024-06-21 19:08:04,879 INFO L175 Difference]: Start difference. First operand has 531 places, 412 transitions, 5579 flow. Second operand 10 states and 117 transitions. [2024-06-21 19:08:04,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 540 places, 423 transitions, 6445 flow [2024-06-21 19:08:05,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 530 places, 423 transitions, 6146 flow, removed 23 selfloop flow, removed 10 redundant places. [2024-06-21 19:08:05,829 INFO L231 Difference]: Finished difference. Result has 531 places, 412 transitions, 5516 flow [2024-06-21 19:08:05,829 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} [2024-06-21 19:08:05,829 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 501 predicate places. [2024-06-21 19:08:05,829 INFO L495 AbstractCegarLoop]: Abstraction has has 531 places, 412 transitions, 5516 flow [2024-06-21 19:08:05,829 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) [2024-06-21 19:08:05,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:08:05,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:08:05,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-21 19:08:05,830 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)] === [2024-06-21 19:08:05,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:08:05,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1408071917, now seen corresponding path program 1 times [2024-06-21 19:08:05,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:08:05,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009633390] [2024-06-21 19:08:05,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:08:05,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:08:05,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:08:07,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:08:07,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:08:07,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009633390] [2024-06-21 19:08:07,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009633390] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:08:07,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:08:07,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:08:07,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112947461] [2024-06-21 19:08:07,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:08:07,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:08:07,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:08:07,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:08:07,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:08:07,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:08:07,381 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) [2024-06-21 19:08:07,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:08:07,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:08:07,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:08:07,850 INFO L124 PetriNetUnfolderBase]: 935/1760 cut-off events. [2024-06-21 19:08:07,851 INFO L125 PetriNetUnfolderBase]: For 171150/171150 co-relation queries the response was YES. [2024-06-21 19:08:07,871 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. [2024-06-21 19:08:07,877 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 391 selfloop transitions, 42 changer transitions 0/435 dead transitions. [2024-06-21 19:08:07,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 540 places, 435 transitions, 6493 flow [2024-06-21 19:08:07,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:08:07,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:08:07,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-21 19:08:07,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33548387096774196 [2024-06-21 19:08:07,878 INFO L175 Difference]: Start difference. First operand has 531 places, 412 transitions, 5516 flow. Second operand 10 states and 104 transitions. [2024-06-21 19:08:07,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 540 places, 435 transitions, 6493 flow [2024-06-21 19:08:08,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 527 places, 435 transitions, 5913 flow, removed 9 selfloop flow, removed 13 redundant places. [2024-06-21 19:08:08,923 INFO L231 Difference]: Finished difference. Result has 531 places, 416 transitions, 5133 flow [2024-06-21 19:08:08,923 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} [2024-06-21 19:08:08,923 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 501 predicate places. [2024-06-21 19:08:08,923 INFO L495 AbstractCegarLoop]: Abstraction has has 531 places, 416 transitions, 5133 flow [2024-06-21 19:08:08,923 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) [2024-06-21 19:08:08,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:08:08,924 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:08:08,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-21 19:08:08,924 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)] === [2024-06-21 19:08:08,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:08:08,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1147707195, now seen corresponding path program 2 times [2024-06-21 19:08:08,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:08:08,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134696445] [2024-06-21 19:08:08,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:08:08,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:08:08,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:08:10,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:08:10,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:08:10,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134696445] [2024-06-21 19:08:10,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134696445] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:08:10,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:08:10,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:08:10,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331607290] [2024-06-21 19:08:10,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:08:10,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:08:10,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:08:10,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:08:10,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:08:10,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:08:10,346 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) [2024-06-21 19:08:10,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:08:10,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:08:10,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:08:10,917 INFO L124 PetriNetUnfolderBase]: 946/1781 cut-off events. [2024-06-21 19:08:10,917 INFO L125 PetriNetUnfolderBase]: For 194003/194003 co-relation queries the response was YES. [2024-06-21 19:08:10,937 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. [2024-06-21 19:08:10,941 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 377 selfloop transitions, 58 changer transitions 0/437 dead transitions. [2024-06-21 19:08:10,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 540 places, 437 transitions, 6367 flow [2024-06-21 19:08:10,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:08:10,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:08:10,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-21 19:08:10,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36129032258064514 [2024-06-21 19:08:10,943 INFO L175 Difference]: Start difference. First operand has 531 places, 416 transitions, 5133 flow. Second operand 10 states and 112 transitions. [2024-06-21 19:08:10,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 540 places, 437 transitions, 6367 flow [2024-06-21 19:08:11,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 535 places, 437 transitions, 6271 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-21 19:08:11,836 INFO L231 Difference]: Finished difference. Result has 536 places, 418 transitions, 5190 flow [2024-06-21 19:08:11,837 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} [2024-06-21 19:08:11,837 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 506 predicate places. [2024-06-21 19:08:11,837 INFO L495 AbstractCegarLoop]: Abstraction has has 536 places, 418 transitions, 5190 flow [2024-06-21 19:08:11,837 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) [2024-06-21 19:08:11,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:08:11,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:08:11,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-21 19:08:11,838 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)] === [2024-06-21 19:08:11,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:08:11,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1463412907, now seen corresponding path program 3 times [2024-06-21 19:08:11,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:08:11,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763896856] [2024-06-21 19:08:11,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:08:11,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:08:11,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:08:13,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:08:13,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:08:13,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763896856] [2024-06-21 19:08:13,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763896856] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:08:13,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:08:13,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:08:13,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154713333] [2024-06-21 19:08:13,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:08:13,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:08:13,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:08:13,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:08:13,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:08:13,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:08:13,273 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) [2024-06-21 19:08:13,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:08:13,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:08:13,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:08:13,797 INFO L124 PetriNetUnfolderBase]: 950/1789 cut-off events. [2024-06-21 19:08:13,797 INFO L125 PetriNetUnfolderBase]: For 199112/199112 co-relation queries the response was YES. [2024-06-21 19:08:13,818 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. [2024-06-21 19:08:13,823 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 374 selfloop transitions, 61 changer transitions 0/437 dead transitions. [2024-06-21 19:08:13,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 545 places, 437 transitions, 6412 flow [2024-06-21 19:08:13,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:08:13,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:08:13,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-21 19:08:13,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3580645161290323 [2024-06-21 19:08:13,824 INFO L175 Difference]: Start difference. First operand has 536 places, 418 transitions, 5190 flow. Second operand 10 states and 111 transitions. [2024-06-21 19:08:13,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 545 places, 437 transitions, 6412 flow [2024-06-21 19:08:14,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 533 places, 437 transitions, 6156 flow, removed 31 selfloop flow, removed 12 redundant places. [2024-06-21 19:08:14,746 INFO L231 Difference]: Finished difference. Result has 534 places, 419 transitions, 5079 flow [2024-06-21 19:08:14,746 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} [2024-06-21 19:08:14,746 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 504 predicate places. [2024-06-21 19:08:14,746 INFO L495 AbstractCegarLoop]: Abstraction has has 534 places, 419 transitions, 5079 flow [2024-06-21 19:08:14,746 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) [2024-06-21 19:08:14,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:08:14,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:08:14,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-21 19:08:14,747 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)] === [2024-06-21 19:08:14,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:08:14,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1463562637, now seen corresponding path program 4 times [2024-06-21 19:08:14,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:08:14,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431526440] [2024-06-21 19:08:14,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:08:14,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:08:14,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:08:16,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:08:16,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:08:16,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431526440] [2024-06-21 19:08:16,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431526440] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:08:16,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:08:16,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:08:16,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655349468] [2024-06-21 19:08:16,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:08:16,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:08:16,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:08:16,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:08:16,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:08:16,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:08:16,293 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) [2024-06-21 19:08:16,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:08:16,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:08:16,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:08:16,778 INFO L124 PetriNetUnfolderBase]: 958/1805 cut-off events. [2024-06-21 19:08:16,778 INFO L125 PetriNetUnfolderBase]: For 222980/222980 co-relation queries the response was YES. [2024-06-21 19:08:16,798 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. [2024-06-21 19:08:16,803 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 356 selfloop transitions, 78 changer transitions 0/436 dead transitions. [2024-06-21 19:08:16,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 544 places, 436 transitions, 6013 flow [2024-06-21 19:08:16,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:08:16,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:08:16,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-21 19:08:16,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3343108504398827 [2024-06-21 19:08:16,805 INFO L175 Difference]: Start difference. First operand has 534 places, 419 transitions, 5079 flow. Second operand 11 states and 114 transitions. [2024-06-21 19:08:16,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 544 places, 436 transitions, 6013 flow [2024-06-21 19:08:17,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 537 places, 436 transitions, 5818 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-21 19:08:17,829 INFO L231 Difference]: Finished difference. Result has 538 places, 421 transitions, 5080 flow [2024-06-21 19:08:17,830 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} [2024-06-21 19:08:17,830 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 508 predicate places. [2024-06-21 19:08:17,830 INFO L495 AbstractCegarLoop]: Abstraction has has 538 places, 421 transitions, 5080 flow [2024-06-21 19:08:17,830 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) [2024-06-21 19:08:17,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:08:17,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:08:17,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-21 19:08:17,830 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)] === [2024-06-21 19:08:17,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:08:17,831 INFO L85 PathProgramCache]: Analyzing trace with hash -856927815, now seen corresponding path program 5 times [2024-06-21 19:08:17,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:08:17,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385794234] [2024-06-21 19:08:17,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:08:17,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:08:17,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:08:19,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:08:19,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:08:19,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385794234] [2024-06-21 19:08:19,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385794234] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:08:19,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:08:19,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:08:19,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916380489] [2024-06-21 19:08:19,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:08:19,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:08:19,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:08:19,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:08:19,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:08:19,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:08:19,428 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) [2024-06-21 19:08:19,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:08:19,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:08:19,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:08:19,971 INFO L124 PetriNetUnfolderBase]: 955/1800 cut-off events. [2024-06-21 19:08:19,972 INFO L125 PetriNetUnfolderBase]: For 181258/181258 co-relation queries the response was YES. [2024-06-21 19:08:19,992 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. [2024-06-21 19:08:19,997 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 371 selfloop transitions, 64 changer transitions 0/437 dead transitions. [2024-06-21 19:08:19,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 547 places, 437 transitions, 5988 flow [2024-06-21 19:08:19,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:08:19,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:08:19,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-21 19:08:19,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-21 19:08:19,998 INFO L175 Difference]: Start difference. First operand has 538 places, 421 transitions, 5080 flow. Second operand 10 states and 109 transitions. [2024-06-21 19:08:19,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 547 places, 437 transitions, 5988 flow [2024-06-21 19:08:20,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 538 places, 437 transitions, 5808 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-21 19:08:20,865 INFO L231 Difference]: Finished difference. Result has 539 places, 421 transitions, 5035 flow [2024-06-21 19:08:20,865 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} [2024-06-21 19:08:20,866 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 509 predicate places. [2024-06-21 19:08:20,866 INFO L495 AbstractCegarLoop]: Abstraction has has 539 places, 421 transitions, 5035 flow [2024-06-21 19:08:20,866 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) [2024-06-21 19:08:20,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:08:20,866 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:08:20,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-21 19:08:20,866 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)] === [2024-06-21 19:08:20,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:08:20,867 INFO L85 PathProgramCache]: Analyzing trace with hash -493245623, now seen corresponding path program 6 times [2024-06-21 19:08:20,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:08:20,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359662064] [2024-06-21 19:08:20,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:08:20,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:08:20,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:08:22,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:08:22,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:08:22,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359662064] [2024-06-21 19:08:22,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359662064] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:08:22,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:08:22,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:08:22,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789907663] [2024-06-21 19:08:22,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:08:22,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:08:22,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:08:22,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:08:22,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:08:22,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-21 19:08:22,344 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) [2024-06-21 19:08:22,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:08:22,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-21 19:08:22,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:08:22,787 INFO L124 PetriNetUnfolderBase]: 966/1823 cut-off events. [2024-06-21 19:08:22,787 INFO L125 PetriNetUnfolderBase]: For 206316/206316 co-relation queries the response was YES. [2024-06-21 19:08:22,808 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. [2024-06-21 19:08:22,814 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 391 selfloop transitions, 48 changer transitions 0/442 dead transitions. [2024-06-21 19:08:22,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 548 places, 442 transitions, 6293 flow [2024-06-21 19:08:22,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:08:22,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:08:22,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-21 19:08:22,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4258064516129032 [2024-06-21 19:08:22,815 INFO L175 Difference]: Start difference. First operand has 539 places, 421 transitions, 5035 flow. Second operand 10 states and 132 transitions. [2024-06-21 19:08:22,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 548 places, 442 transitions, 6293 flow [2024-06-21 19:08:23,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 541 places, 442 transitions, 6178 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-21 19:08:23,854 INFO L231 Difference]: Finished difference. Result has 542 places, 423 transitions, 5060 flow [2024-06-21 19:08:23,854 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} [2024-06-21 19:08:23,855 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 512 predicate places. [2024-06-21 19:08:23,855 INFO L495 AbstractCegarLoop]: Abstraction has has 542 places, 423 transitions, 5060 flow [2024-06-21 19:08:23,855 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) [2024-06-21 19:08:23,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:08:23,855 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:08:23,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-21 19:08:23,855 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)] === [2024-06-21 19:08:23,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:08:23,856 INFO L85 PathProgramCache]: Analyzing trace with hash -202275376, now seen corresponding path program 1 times [2024-06-21 19:08:23,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:08:23,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907570993] [2024-06-21 19:08:23,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:08:23,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:08:23,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:08:25,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:08:25,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:08:25,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907570993] [2024-06-21 19:08:25,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907570993] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:08:25,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:08:25,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:08:25,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77913011] [2024-06-21 19:08:25,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:08:25,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:08:25,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:08:25,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:08:25,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:08:25,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-21 19:08:25,201 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) [2024-06-21 19:08:25,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:08:25,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-21 19:08:25,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:08:25,756 INFO L124 PetriNetUnfolderBase]: 969/1826 cut-off events. [2024-06-21 19:08:25,756 INFO L125 PetriNetUnfolderBase]: For 197878/197878 co-relation queries the response was YES. [2024-06-21 19:08:25,777 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. [2024-06-21 19:08:25,782 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 306 selfloop transitions, 127 changer transitions 0/436 dead transitions. [2024-06-21 19:08:25,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 550 places, 436 transitions, 6014 flow [2024-06-21 19:08:25,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:08:25,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:08:25,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 121 transitions. [2024-06-21 19:08:25,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4336917562724014 [2024-06-21 19:08:25,784 INFO L175 Difference]: Start difference. First operand has 542 places, 423 transitions, 5060 flow. Second operand 9 states and 121 transitions. [2024-06-21 19:08:25,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 550 places, 436 transitions, 6014 flow [2024-06-21 19:08:26,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 544 places, 436 transitions, 5930 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-21 19:08:26,808 INFO L231 Difference]: Finished difference. Result has 545 places, 425 transitions, 5308 flow [2024-06-21 19:08:26,808 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} [2024-06-21 19:08:26,808 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 515 predicate places. [2024-06-21 19:08:26,808 INFO L495 AbstractCegarLoop]: Abstraction has has 545 places, 425 transitions, 5308 flow [2024-06-21 19:08:26,809 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) [2024-06-21 19:08:26,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:08:26,809 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:08:26,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-21 19:08:26,809 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)] === [2024-06-21 19:08:26,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:08:26,809 INFO L85 PathProgramCache]: Analyzing trace with hash 403242799, now seen corresponding path program 7 times [2024-06-21 19:08:26,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:08:26,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307512615] [2024-06-21 19:08:26,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:08:26,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:08:26,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:08:28,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:08:28,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:08:28,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307512615] [2024-06-21 19:08:28,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307512615] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:08:28,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:08:28,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:08:28,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116756334] [2024-06-21 19:08:28,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:08:28,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:08:28,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:08:28,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:08:28,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:08:28,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:08:28,586 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) [2024-06-21 19:08:28,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:08:28,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:08:28,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:08:29,227 INFO L124 PetriNetUnfolderBase]: 973/1835 cut-off events. [2024-06-21 19:08:29,227 INFO L125 PetriNetUnfolderBase]: For 212041/212041 co-relation queries the response was YES. [2024-06-21 19:08:29,248 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. [2024-06-21 19:08:29,253 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 387 selfloop transitions, 53 changer transitions 0/442 dead transitions. [2024-06-21 19:08:29,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 554 places, 442 transitions, 6240 flow [2024-06-21 19:08:29,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:08:29,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:08:29,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-21 19:08:29,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-21 19:08:29,255 INFO L175 Difference]: Start difference. First operand has 545 places, 425 transitions, 5308 flow. Second operand 10 states and 120 transitions. [2024-06-21 19:08:29,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 554 places, 442 transitions, 6240 flow [2024-06-21 19:08:30,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 547 places, 442 transitions, 5942 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-21 19:08:30,321 INFO L231 Difference]: Finished difference. Result has 548 places, 426 transitions, 5138 flow [2024-06-21 19:08:30,322 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} [2024-06-21 19:08:30,322 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 518 predicate places. [2024-06-21 19:08:30,322 INFO L495 AbstractCegarLoop]: Abstraction has has 548 places, 426 transitions, 5138 flow [2024-06-21 19:08:30,322 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) [2024-06-21 19:08:30,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:08:30,322 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:08:30,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-21 19:08:30,323 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)] === [2024-06-21 19:08:30,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:08:30,323 INFO L85 PathProgramCache]: Analyzing trace with hash -207252023, now seen corresponding path program 8 times [2024-06-21 19:08:30,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:08:30,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240706802] [2024-06-21 19:08:30,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:08:30,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:08:30,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:08:31,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:08:31,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:08:31,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240706802] [2024-06-21 19:08:31,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240706802] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:08:31,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:08:31,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:08:31,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364351407] [2024-06-21 19:08:31,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:08:31,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:08:31,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:08:31,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:08:31,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:08:32,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:08:32,033 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) [2024-06-21 19:08:32,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:08:32,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:08:32,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:08:32,675 INFO L124 PetriNetUnfolderBase]: 970/1830 cut-off events. [2024-06-21 19:08:32,676 INFO L125 PetriNetUnfolderBase]: For 192060/192060 co-relation queries the response was YES. [2024-06-21 19:08:32,697 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. [2024-06-21 19:08:32,702 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 390 selfloop transitions, 51 changer transitions 0/443 dead transitions. [2024-06-21 19:08:32,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 557 places, 443 transitions, 6060 flow [2024-06-21 19:08:32,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:08:32,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:08:32,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-21 19:08:32,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3903225806451613 [2024-06-21 19:08:32,703 INFO L175 Difference]: Start difference. First operand has 548 places, 426 transitions, 5138 flow. Second operand 10 states and 121 transitions. [2024-06-21 19:08:32,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 557 places, 443 transitions, 6060 flow [2024-06-21 19:08:33,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 550 places, 443 transitions, 5948 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-21 19:08:33,761 INFO L231 Difference]: Finished difference. Result has 551 places, 426 transitions, 5134 flow [2024-06-21 19:08:33,762 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} [2024-06-21 19:08:33,762 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 521 predicate places. [2024-06-21 19:08:33,762 INFO L495 AbstractCegarLoop]: Abstraction has has 551 places, 426 transitions, 5134 flow [2024-06-21 19:08:33,762 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) [2024-06-21 19:08:33,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:08:33,762 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:08:33,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-21 19:08:33,763 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)] === [2024-06-21 19:08:33,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:08:33,764 INFO L85 PathProgramCache]: Analyzing trace with hash -389450481, now seen corresponding path program 9 times [2024-06-21 19:08:33,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:08:33,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207083720] [2024-06-21 19:08:33,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:08:33,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:08:33,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:08:35,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:08:35,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:08:35,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207083720] [2024-06-21 19:08:35,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207083720] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:08:35,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:08:35,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:08:35,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445894391] [2024-06-21 19:08:35,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:08:35,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:08:35,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:08:35,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:08:35,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:08:35,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-21 19:08:35,189 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) [2024-06-21 19:08:35,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:08:35,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-21 19:08:35,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:08:35,684 INFO L124 PetriNetUnfolderBase]: 981/1850 cut-off events. [2024-06-21 19:08:35,685 INFO L125 PetriNetUnfolderBase]: For 218294/218294 co-relation queries the response was YES. [2024-06-21 19:08:35,707 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. [2024-06-21 19:08:35,712 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 362 selfloop transitions, 80 changer transitions 0/445 dead transitions. [2024-06-21 19:08:35,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 560 places, 445 transitions, 6411 flow [2024-06-21 19:08:35,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:08:35,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:08:35,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-21 19:08:35,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44193548387096776 [2024-06-21 19:08:35,714 INFO L175 Difference]: Start difference. First operand has 551 places, 426 transitions, 5134 flow. Second operand 10 states and 137 transitions. [2024-06-21 19:08:35,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 560 places, 445 transitions, 6411 flow [2024-06-21 19:08:36,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 553 places, 445 transitions, 6311 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-21 19:08:36,925 INFO L231 Difference]: Finished difference. Result has 554 places, 428 transitions, 5241 flow [2024-06-21 19:08:36,925 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} [2024-06-21 19:08:36,926 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 524 predicate places. [2024-06-21 19:08:36,926 INFO L495 AbstractCegarLoop]: Abstraction has has 554 places, 428 transitions, 5241 flow [2024-06-21 19:08:36,926 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) [2024-06-21 19:08:36,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:08:36,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:08:36,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-21 19:08:36,926 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)] === [2024-06-21 19:08:36,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:08:36,927 INFO L85 PathProgramCache]: Analyzing trace with hash -389306331, now seen corresponding path program 10 times [2024-06-21 19:08:36,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:08:36,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615603006] [2024-06-21 19:08:36,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:08:36,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:08:36,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:08:38,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:08:38,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:08:38,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615603006] [2024-06-21 19:08:38,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615603006] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:08:38,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:08:38,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:08:38,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159352521] [2024-06-21 19:08:38,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:08:38,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:08:38,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:08:38,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:08:38,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:08:38,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-21 19:08:38,459 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) [2024-06-21 19:08:38,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:08:38,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-21 19:08:38,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:08:38,961 INFO L124 PetriNetUnfolderBase]: 985/1858 cut-off events. [2024-06-21 19:08:38,961 INFO L125 PetriNetUnfolderBase]: For 221604/221604 co-relation queries the response was YES. [2024-06-21 19:08:38,983 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. [2024-06-21 19:08:38,988 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 360 selfloop transitions, 82 changer transitions 0/445 dead transitions. [2024-06-21 19:08:38,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 563 places, 445 transitions, 6500 flow [2024-06-21 19:08:38,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:08:38,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:08:38,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 136 transitions. [2024-06-21 19:08:38,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43870967741935485 [2024-06-21 19:08:38,989 INFO L175 Difference]: Start difference. First operand has 554 places, 428 transitions, 5241 flow. Second operand 10 states and 136 transitions. [2024-06-21 19:08:38,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 563 places, 445 transitions, 6500 flow [2024-06-21 19:08:40,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 557 places, 445 transitions, 6366 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-21 19:08:40,110 INFO L231 Difference]: Finished difference. Result has 558 places, 429 transitions, 5298 flow [2024-06-21 19:08:40,110 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} [2024-06-21 19:08:40,111 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 528 predicate places. [2024-06-21 19:08:40,111 INFO L495 AbstractCegarLoop]: Abstraction has has 558 places, 429 transitions, 5298 flow [2024-06-21 19:08:40,111 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) [2024-06-21 19:08:40,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:08:40,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:08:40,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-21 19:08:40,111 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)] === [2024-06-21 19:08:40,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:08:40,112 INFO L85 PathProgramCache]: Analyzing trace with hash -531553551, now seen corresponding path program 11 times [2024-06-21 19:08:40,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:08:40,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063124034] [2024-06-21 19:08:40,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:08:40,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:08:40,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:08:41,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:08:41,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:08:41,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063124034] [2024-06-21 19:08:41,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063124034] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:08:41,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:08:41,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:08:41,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504933448] [2024-06-21 19:08:41,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:08:41,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:08:41,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:08:41,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:08:41,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:08:41,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:08:41,905 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) [2024-06-21 19:08:41,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:08:41,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:08:41,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:08:42,554 INFO L124 PetriNetUnfolderBase]: 996/1879 cut-off events. [2024-06-21 19:08:42,554 INFO L125 PetriNetUnfolderBase]: For 248977/248977 co-relation queries the response was YES. [2024-06-21 19:08:42,573 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. [2024-06-21 19:08:42,577 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 365 selfloop transitions, 81 changer transitions 0/448 dead transitions. [2024-06-21 19:08:42,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 567 places, 448 transitions, 6584 flow [2024-06-21 19:08:42,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:08:42,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:08:42,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-21 19:08:42,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4064516129032258 [2024-06-21 19:08:42,578 INFO L175 Difference]: Start difference. First operand has 558 places, 429 transitions, 5298 flow. Second operand 10 states and 126 transitions. [2024-06-21 19:08:42,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 567 places, 448 transitions, 6584 flow [2024-06-21 19:08:43,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 559 places, 448 transitions, 6410 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-21 19:08:43,797 INFO L231 Difference]: Finished difference. Result has 560 places, 431 transitions, 5337 flow [2024-06-21 19:08:43,797 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} [2024-06-21 19:08:43,797 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 530 predicate places. [2024-06-21 19:08:43,797 INFO L495 AbstractCegarLoop]: Abstraction has has 560 places, 431 transitions, 5337 flow [2024-06-21 19:08:43,797 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) [2024-06-21 19:08:43,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:08:43,798 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:08:43,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-21 19:08:43,798 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)] === [2024-06-21 19:08:43,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:08:43,798 INFO L85 PathProgramCache]: Analyzing trace with hash -389300751, now seen corresponding path program 12 times [2024-06-21 19:08:43,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:08:43,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767785073] [2024-06-21 19:08:43,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:08:43,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:08:43,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:08:45,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:08:45,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:08:45,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767785073] [2024-06-21 19:08:45,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767785073] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:08:45,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:08:45,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:08:45,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694221727] [2024-06-21 19:08:45,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:08:45,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:08:45,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:08:45,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:08:45,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:08:45,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-21 19:08:45,205 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) [2024-06-21 19:08:45,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:08:45,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-21 19:08:45,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:08:45,663 INFO L124 PetriNetUnfolderBase]: 993/1874 cut-off events. [2024-06-21 19:08:45,663 INFO L125 PetriNetUnfolderBase]: For 227594/227594 co-relation queries the response was YES. [2024-06-21 19:08:45,686 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. [2024-06-21 19:08:45,691 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 359 selfloop transitions, 83 changer transitions 0/445 dead transitions. [2024-06-21 19:08:45,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 569 places, 445 transitions, 6260 flow [2024-06-21 19:08:45,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:08:45,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:08:45,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2024-06-21 19:08:45,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.432258064516129 [2024-06-21 19:08:45,692 INFO L175 Difference]: Start difference. First operand has 560 places, 431 transitions, 5337 flow. Second operand 10 states and 134 transitions. [2024-06-21 19:08:45,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 569 places, 445 transitions, 6260 flow [2024-06-21 19:08:46,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 563 places, 445 transitions, 6124 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-21 19:08:46,796 INFO L231 Difference]: Finished difference. Result has 564 places, 431 transitions, 5371 flow [2024-06-21 19:08:46,796 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} [2024-06-21 19:08:46,796 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 534 predicate places. [2024-06-21 19:08:46,796 INFO L495 AbstractCegarLoop]: Abstraction has has 564 places, 431 transitions, 5371 flow [2024-06-21 19:08:46,797 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) [2024-06-21 19:08:46,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:08:46,797 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:08:46,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-21 19:08:46,797 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)] === [2024-06-21 19:08:46,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:08:46,797 INFO L85 PathProgramCache]: Analyzing trace with hash 675909279, now seen corresponding path program 1 times [2024-06-21 19:08:46,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:08:46,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196244092] [2024-06-21 19:08:46,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:08:46,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:08:46,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:08:47,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:08:47,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:08:47,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196244092] [2024-06-21 19:08:47,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196244092] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:08:47,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:08:47,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:08:47,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449290660] [2024-06-21 19:08:47,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:08:47,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:08:47,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:08:47,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:08:47,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:08:48,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:08:48,107 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) [2024-06-21 19:08:48,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:08:48,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:08:48,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:08:48,773 INFO L124 PetriNetUnfolderBase]: 1034/1961 cut-off events. [2024-06-21 19:08:48,773 INFO L125 PetriNetUnfolderBase]: For 419140/419140 co-relation queries the response was YES. [2024-06-21 19:08:48,797 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. [2024-06-21 19:08:48,802 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 349 selfloop transitions, 97 changer transitions 7/455 dead transitions. [2024-06-21 19:08:48,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 574 places, 455 transitions, 6831 flow [2024-06-21 19:08:48,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:08:48,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:08:48,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-21 19:08:48,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40762463343108507 [2024-06-21 19:08:48,804 INFO L175 Difference]: Start difference. First operand has 564 places, 431 transitions, 5371 flow. Second operand 11 states and 139 transitions. [2024-06-21 19:08:48,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 574 places, 455 transitions, 6831 flow [2024-06-21 19:08:50,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 565 places, 455 transitions, 6661 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-21 19:08:50,636 INFO L231 Difference]: Finished difference. Result has 566 places, 429 transitions, 5385 flow [2024-06-21 19:08:50,636 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} [2024-06-21 19:08:50,636 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 536 predicate places. [2024-06-21 19:08:50,636 INFO L495 AbstractCegarLoop]: Abstraction has has 566 places, 429 transitions, 5385 flow [2024-06-21 19:08:50,636 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) [2024-06-21 19:08:50,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:08:50,637 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:08:50,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-21 19:08:50,637 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)] === [2024-06-21 19:08:50,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:08:50,637 INFO L85 PathProgramCache]: Analyzing trace with hash 668280923, now seen corresponding path program 13 times [2024-06-21 19:08:50,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:08:50,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9823841] [2024-06-21 19:08:50,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:08:50,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:08:50,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:08:52,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:08:52,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:08:52,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9823841] [2024-06-21 19:08:52,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9823841] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:08:52,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:08:52,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:08:52,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934073027] [2024-06-21 19:08:52,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:08:52,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:08:52,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:08:52,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:08:52,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:08:52,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:08:52,368 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) [2024-06-21 19:08:52,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:08:52,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:08:52,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:08:53,118 INFO L124 PetriNetUnfolderBase]: 1020/1931 cut-off events. [2024-06-21 19:08:53,118 INFO L125 PetriNetUnfolderBase]: For 352548/352548 co-relation queries the response was YES. [2024-06-21 19:08:53,138 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. [2024-06-21 19:08:53,143 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 335 selfloop transitions, 107 changer transitions 0/444 dead transitions. [2024-06-21 19:08:53,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 573 places, 444 transitions, 6326 flow [2024-06-21 19:08:53,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:08:53,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:08:53,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-21 19:08:53,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3967741935483871 [2024-06-21 19:08:53,144 INFO L175 Difference]: Start difference. First operand has 566 places, 429 transitions, 5385 flow. Second operand 10 states and 123 transitions. [2024-06-21 19:08:53,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 573 places, 444 transitions, 6326 flow [2024-06-21 19:08:54,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 563 places, 444 transitions, 6128 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-21 19:08:54,934 INFO L231 Difference]: Finished difference. Result has 564 places, 430 transitions, 5425 flow [2024-06-21 19:08:54,934 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} [2024-06-21 19:08:54,934 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 534 predicate places. [2024-06-21 19:08:54,934 INFO L495 AbstractCegarLoop]: Abstraction has has 564 places, 430 transitions, 5425 flow [2024-06-21 19:08:54,935 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) [2024-06-21 19:08:54,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:08:54,935 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:08:54,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-21 19:08:54,935 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)] === [2024-06-21 19:08:54,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:08:54,935 INFO L85 PathProgramCache]: Analyzing trace with hash 675632573, now seen corresponding path program 14 times [2024-06-21 19:08:54,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:08:54,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672264009] [2024-06-21 19:08:54,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:08:54,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:08:54,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:08:56,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:08:56,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:08:56,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672264009] [2024-06-21 19:08:56,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672264009] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:08:56,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:08:56,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:08:56,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780559427] [2024-06-21 19:08:56,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:08:56,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:08:56,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:08:56,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:08:56,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:08:56,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:08:56,706 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) [2024-06-21 19:08:56,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:08:56,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:08:56,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:08:57,378 INFO L124 PetriNetUnfolderBase]: 1024/1939 cut-off events. [2024-06-21 19:08:57,378 INFO L125 PetriNetUnfolderBase]: For 348301/348301 co-relation queries the response was YES. [2024-06-21 19:08:57,401 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. [2024-06-21 19:08:57,406 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 317 selfloop transitions, 125 changer transitions 0/444 dead transitions. [2024-06-21 19:08:57,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 573 places, 444 transitions, 6357 flow [2024-06-21 19:08:57,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:08:57,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:08:57,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-21 19:08:57,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3935483870967742 [2024-06-21 19:08:57,408 INFO L175 Difference]: Start difference. First operand has 564 places, 430 transitions, 5425 flow. Second operand 10 states and 122 transitions. [2024-06-21 19:08:57,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 573 places, 444 transitions, 6357 flow [2024-06-21 19:08:59,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 565 places, 444 transitions, 6133 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-21 19:08:59,160 INFO L231 Difference]: Finished difference. Result has 566 places, 431 transitions, 5475 flow [2024-06-21 19:08:59,160 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} [2024-06-21 19:08:59,160 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 536 predicate places. [2024-06-21 19:08:59,160 INFO L495 AbstractCegarLoop]: Abstraction has has 566 places, 431 transitions, 5475 flow [2024-06-21 19:08:59,161 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) [2024-06-21 19:08:59,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:08:59,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:08:59,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-21 19:08:59,161 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)] === [2024-06-21 19:08:59,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:08:59,161 INFO L85 PathProgramCache]: Analyzing trace with hash 668275343, now seen corresponding path program 15 times [2024-06-21 19:08:59,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:08:59,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076854135] [2024-06-21 19:08:59,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:08:59,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:08:59,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:09:00,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:09:00,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:09:00,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076854135] [2024-06-21 19:09:00,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076854135] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:09:00,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:09:00,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:09:00,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381776995] [2024-06-21 19:09:00,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:09:00,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:09:00,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:09:00,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:09:00,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:09:00,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:09:00,946 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) [2024-06-21 19:09:00,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:09:00,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:09:00,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:09:01,647 INFO L124 PetriNetUnfolderBase]: 1028/1947 cut-off events. [2024-06-21 19:09:01,648 INFO L125 PetriNetUnfolderBase]: For 352919/352919 co-relation queries the response was YES. [2024-06-21 19:09:01,672 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. [2024-06-21 19:09:01,678 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 338 selfloop transitions, 107 changer transitions 0/447 dead transitions. [2024-06-21 19:09:01,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 575 places, 447 transitions, 6426 flow [2024-06-21 19:09:01,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:09:01,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:09:01,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-21 19:09:01,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3967741935483871 [2024-06-21 19:09:01,679 INFO L175 Difference]: Start difference. First operand has 566 places, 431 transitions, 5475 flow. Second operand 10 states and 123 transitions. [2024-06-21 19:09:01,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 575 places, 447 transitions, 6426 flow [2024-06-21 19:09:03,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 567 places, 447 transitions, 6164 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-21 19:09:03,384 INFO L231 Difference]: Finished difference. Result has 568 places, 432 transitions, 5454 flow [2024-06-21 19:09:03,384 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} [2024-06-21 19:09:03,385 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 538 predicate places. [2024-06-21 19:09:03,385 INFO L495 AbstractCegarLoop]: Abstraction has has 568 places, 432 transitions, 5454 flow [2024-06-21 19:09:03,385 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) [2024-06-21 19:09:03,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:09:03,385 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:09:03,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-21 19:09:03,385 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)] === [2024-06-21 19:09:03,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:09:03,386 INFO L85 PathProgramCache]: Analyzing trace with hash 675899979, now seen corresponding path program 2 times [2024-06-21 19:09:03,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:09:03,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792817688] [2024-06-21 19:09:03,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:09:03,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:09:03,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:09:04,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:09:04,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:09:04,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792817688] [2024-06-21 19:09:04,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792817688] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:09:04,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:09:04,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:09:04,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92963513] [2024-06-21 19:09:04,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:09:04,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:09:04,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:09:04,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:09:04,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:09:04,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:09:04,848 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) [2024-06-21 19:09:04,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:09:04,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:09:04,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:09:05,465 INFO L124 PetriNetUnfolderBase]: 1015/1924 cut-off events. [2024-06-21 19:09:05,466 INFO L125 PetriNetUnfolderBase]: For 334607/334607 co-relation queries the response was YES. [2024-06-21 19:09:05,488 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. [2024-06-21 19:09:05,493 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 342 selfloop transitions, 94 changer transitions 13/451 dead transitions. [2024-06-21 19:09:05,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 578 places, 451 transitions, 6512 flow [2024-06-21 19:09:05,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:09:05,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:09:05,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-21 19:09:05,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39002932551319647 [2024-06-21 19:09:05,494 INFO L175 Difference]: Start difference. First operand has 568 places, 432 transitions, 5454 flow. Second operand 11 states and 133 transitions. [2024-06-21 19:09:05,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 578 places, 451 transitions, 6512 flow [2024-06-21 19:09:06,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 570 places, 451 transitions, 6285 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-21 19:09:06,638 INFO L231 Difference]: Finished difference. Result has 571 places, 428 transitions, 5383 flow [2024-06-21 19:09:06,639 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} [2024-06-21 19:09:06,639 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 541 predicate places. [2024-06-21 19:09:06,639 INFO L495 AbstractCegarLoop]: Abstraction has has 571 places, 428 transitions, 5383 flow [2024-06-21 19:09:06,639 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) [2024-06-21 19:09:06,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:09:06,639 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:09:06,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-21 19:09:06,640 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)] === [2024-06-21 19:09:06,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:09:06,640 INFO L85 PathProgramCache]: Analyzing trace with hash 474543323, now seen corresponding path program 16 times [2024-06-21 19:09:06,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:09:06,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248133475] [2024-06-21 19:09:06,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:09:06,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:09:06,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:09:08,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:09:08,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:09:08,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248133475] [2024-06-21 19:09:08,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248133475] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:09:08,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:09:08,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:09:08,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341430115] [2024-06-21 19:09:08,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:09:08,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:09:08,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:09:08,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:09:08,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:09:08,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:09:08,209 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) [2024-06-21 19:09:08,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:09:08,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:09:08,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:09:08,810 INFO L124 PetriNetUnfolderBase]: 994/1881 cut-off events. [2024-06-21 19:09:08,811 INFO L125 PetriNetUnfolderBase]: For 238315/238315 co-relation queries the response was YES. [2024-06-21 19:09:08,834 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. [2024-06-21 19:09:08,839 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 350 selfloop transitions, 92 changer transitions 0/444 dead transitions. [2024-06-21 19:09:08,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 574 places, 444 transitions, 6341 flow [2024-06-21 19:09:08,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:09:08,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:09:08,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-21 19:09:08,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-21 19:09:08,840 INFO L175 Difference]: Start difference. First operand has 571 places, 428 transitions, 5383 flow. Second operand 10 states and 124 transitions. [2024-06-21 19:09:08,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 574 places, 444 transitions, 6341 flow [2024-06-21 19:09:10,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 565 places, 444 transitions, 6133 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-21 19:09:10,040 INFO L231 Difference]: Finished difference. Result has 566 places, 429 transitions, 5391 flow [2024-06-21 19:09:10,040 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} [2024-06-21 19:09:10,040 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 536 predicate places. [2024-06-21 19:09:10,040 INFO L495 AbstractCegarLoop]: Abstraction has has 566 places, 429 transitions, 5391 flow [2024-06-21 19:09:10,040 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) [2024-06-21 19:09:10,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:09:10,041 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:09:10,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-21 19:09:10,041 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)] === [2024-06-21 19:09:10,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:09:10,042 INFO L85 PathProgramCache]: Analyzing trace with hash 468829403, now seen corresponding path program 17 times [2024-06-21 19:09:10,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:09:10,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769509739] [2024-06-21 19:09:10,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:09:10,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:09:10,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:09:11,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:09:11,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:09:11,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769509739] [2024-06-21 19:09:11,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769509739] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:09:11,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:09:11,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:09:11,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219367613] [2024-06-21 19:09:11,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:09:11,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:09:11,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:09:11,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:09:11,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:09:11,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-21 19:09:11,697 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) [2024-06-21 19:09:11,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:09:11,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-21 19:09:11,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:09:12,263 INFO L124 PetriNetUnfolderBase]: 998/1889 cut-off events. [2024-06-21 19:09:12,263 INFO L125 PetriNetUnfolderBase]: For 236136/236136 co-relation queries the response was YES. [2024-06-21 19:09:12,287 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. [2024-06-21 19:09:12,292 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 351 selfloop transitions, 93 changer transitions 0/447 dead transitions. [2024-06-21 19:09:12,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 575 places, 447 transitions, 6668 flow [2024-06-21 19:09:12,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:09:12,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:09:12,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2024-06-21 19:09:12,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.432258064516129 [2024-06-21 19:09:12,293 INFO L175 Difference]: Start difference. First operand has 566 places, 429 transitions, 5391 flow. Second operand 10 states and 134 transitions. [2024-06-21 19:09:12,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 575 places, 447 transitions, 6668 flow [2024-06-21 19:09:13,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 566 places, 447 transitions, 6456 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-21 19:09:13,488 INFO L231 Difference]: Finished difference. Result has 567 places, 430 transitions, 5396 flow [2024-06-21 19:09:13,489 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} [2024-06-21 19:09:13,489 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 537 predicate places. [2024-06-21 19:09:13,489 INFO L495 AbstractCegarLoop]: Abstraction has has 567 places, 430 transitions, 5396 flow [2024-06-21 19:09:13,489 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) [2024-06-21 19:09:13,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:09:13,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:09:13,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-21 19:09:13,489 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)] === [2024-06-21 19:09:13,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:09:13,490 INFO L85 PathProgramCache]: Analyzing trace with hash 474335933, now seen corresponding path program 18 times [2024-06-21 19:09:13,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:09:13,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442619719] [2024-06-21 19:09:13,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:09:13,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:09:13,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:09:15,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:09:15,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:09:15,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442619719] [2024-06-21 19:09:15,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442619719] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:09:15,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:09:15,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:09:15,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877870573] [2024-06-21 19:09:15,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:09:15,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:09:15,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:09:15,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:09:15,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:09:15,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:09:15,259 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) [2024-06-21 19:09:15,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:09:15,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:09:15,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:09:15,862 INFO L124 PetriNetUnfolderBase]: 995/1884 cut-off events. [2024-06-21 19:09:15,863 INFO L125 PetriNetUnfolderBase]: For 210512/210512 co-relation queries the response was YES. [2024-06-21 19:09:15,886 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. [2024-06-21 19:09:15,891 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 353 selfloop transitions, 91 changer transitions 0/446 dead transitions. [2024-06-21 19:09:15,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 576 places, 446 transitions, 6334 flow [2024-06-21 19:09:15,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:09:15,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:09:15,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-21 19:09:15,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-21 19:09:15,893 INFO L175 Difference]: Start difference. First operand has 567 places, 430 transitions, 5396 flow. Second operand 10 states and 125 transitions. [2024-06-21 19:09:15,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 576 places, 446 transitions, 6334 flow [2024-06-21 19:09:16,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 567 places, 446 transitions, 6059 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-21 19:09:16,932 INFO L231 Difference]: Finished difference. Result has 568 places, 430 transitions, 5308 flow [2024-06-21 19:09:16,932 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} [2024-06-21 19:09:16,932 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 538 predicate places. [2024-06-21 19:09:16,932 INFO L495 AbstractCegarLoop]: Abstraction has has 568 places, 430 transitions, 5308 flow [2024-06-21 19:09:16,933 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) [2024-06-21 19:09:16,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:09:16,933 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:09:16,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-21 19:09:16,934 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)] === [2024-06-21 19:09:16,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:09:16,934 INFO L85 PathProgramCache]: Analyzing trace with hash -843333127, now seen corresponding path program 3 times [2024-06-21 19:09:16,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:09:16,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105544623] [2024-06-21 19:09:16,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:09:16,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:09:16,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:09:18,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:09:18,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:09:18,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105544623] [2024-06-21 19:09:18,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105544623] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:09:18,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:09:18,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:09:18,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141333328] [2024-06-21 19:09:18,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:09:18,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:09:18,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:09:18,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:09:18,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:09:18,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:09:18,637 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) [2024-06-21 19:09:18,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:09:18,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:09:18,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:09:19,339 INFO L124 PetriNetUnfolderBase]: 1036/1971 cut-off events. [2024-06-21 19:09:19,340 INFO L125 PetriNetUnfolderBase]: For 410667/410667 co-relation queries the response was YES. [2024-06-21 19:09:19,364 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. [2024-06-21 19:09:19,370 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 420 selfloop transitions, 23 changer transitions 10/455 dead transitions. [2024-06-21 19:09:19,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 581 places, 455 transitions, 7084 flow [2024-06-21 19:09:19,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-21 19:09:19,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-21 19:09:19,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 137 transitions. [2024-06-21 19:09:19,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.315668202764977 [2024-06-21 19:09:19,371 INFO L175 Difference]: Start difference. First operand has 568 places, 430 transitions, 5308 flow. Second operand 14 states and 137 transitions. [2024-06-21 19:09:19,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 581 places, 455 transitions, 7084 flow [2024-06-21 19:09:21,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 572 places, 455 transitions, 6881 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-21 19:09:21,068 INFO L231 Difference]: Finished difference. Result has 573 places, 427 transitions, 5135 flow [2024-06-21 19:09:21,068 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} [2024-06-21 19:09:21,068 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 543 predicate places. [2024-06-21 19:09:21,069 INFO L495 AbstractCegarLoop]: Abstraction has has 573 places, 427 transitions, 5135 flow [2024-06-21 19:09:21,069 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) [2024-06-21 19:09:21,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:09:21,069 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:09:21,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-21 19:09:21,069 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)] === [2024-06-21 19:09:21,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:09:21,070 INFO L85 PathProgramCache]: Analyzing trace with hash -854384317, now seen corresponding path program 4 times [2024-06-21 19:09:21,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:09:21,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106343245] [2024-06-21 19:09:21,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:09:21,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:09:21,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:09:22,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:09:22,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:09:22,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106343245] [2024-06-21 19:09:22,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106343245] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:09:22,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:09:22,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 19:09:22,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813213765] [2024-06-21 19:09:22,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:09:22,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 19:09:22,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:09:22,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 19:09:22,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-21 19:09:22,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:09:22,831 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) [2024-06-21 19:09:22,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:09:22,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:09:22,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:09:23,505 INFO L124 PetriNetUnfolderBase]: 1030/1961 cut-off events. [2024-06-21 19:09:23,506 INFO L125 PetriNetUnfolderBase]: For 439637/439637 co-relation queries the response was YES. [2024-06-21 19:09:23,530 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. [2024-06-21 19:09:23,535 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 411 selfloop transitions, 22 changer transitions 11/446 dead transitions. [2024-06-21 19:09:23,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 582 places, 446 transitions, 6497 flow [2024-06-21 19:09:23,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-21 19:09:23,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-21 19:09:23,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 133 transitions. [2024-06-21 19:09:23,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3064516129032258 [2024-06-21 19:09:23,536 INFO L175 Difference]: Start difference. First operand has 573 places, 427 transitions, 5135 flow. Second operand 14 states and 133 transitions. [2024-06-21 19:09:23,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 582 places, 446 transitions, 6497 flow [2024-06-21 19:09:25,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 569 places, 446 transitions, 6446 flow, removed 6 selfloop flow, removed 13 redundant places. [2024-06-21 19:09:25,141 INFO L231 Difference]: Finished difference. Result has 570 places, 424 transitions, 5117 flow [2024-06-21 19:09:25,142 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} [2024-06-21 19:09:25,142 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 540 predicate places. [2024-06-21 19:09:25,142 INFO L495 AbstractCegarLoop]: Abstraction has has 570 places, 424 transitions, 5117 flow [2024-06-21 19:09:25,142 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) [2024-06-21 19:09:25,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:09:25,142 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:09:25,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2024-06-21 19:09:25,143 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)] === [2024-06-21 19:09:25,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:09:25,143 INFO L85 PathProgramCache]: Analyzing trace with hash -854375017, now seen corresponding path program 5 times [2024-06-21 19:09:25,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:09:25,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540435072] [2024-06-21 19:09:25,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:09:25,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:09:25,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:09:26,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:09:26,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:09:26,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540435072] [2024-06-21 19:09:26,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540435072] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:09:26,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:09:26,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:09:26,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331685196] [2024-06-21 19:09:26,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:09:26,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:09:26,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:09:26,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:09:26,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:09:26,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:09:26,837 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) [2024-06-21 19:09:26,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:09:26,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:09:26,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:09:27,745 INFO L124 PetriNetUnfolderBase]: 1018/1941 cut-off events. [2024-06-21 19:09:27,745 INFO L125 PetriNetUnfolderBase]: For 401522/401522 co-relation queries the response was YES. [2024-06-21 19:09:27,766 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. [2024-06-21 19:09:27,771 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 409 selfloop transitions, 19 changer transitions 12/442 dead transitions. [2024-06-21 19:09:27,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 580 places, 442 transitions, 6419 flow [2024-06-21 19:09:27,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-21 19:09:27,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-21 19:09:27,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 130 transitions. [2024-06-21 19:09:27,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2995391705069124 [2024-06-21 19:09:27,772 INFO L175 Difference]: Start difference. First operand has 570 places, 424 transitions, 5117 flow. Second operand 14 states and 130 transitions. [2024-06-21 19:09:27,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 580 places, 442 transitions, 6419 flow [2024-06-21 19:09:29,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 567 places, 442 transitions, 6367 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-21 19:09:29,603 INFO L231 Difference]: Finished difference. Result has 568 places, 420 transitions, 5081 flow [2024-06-21 19:09:29,603 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} [2024-06-21 19:09:29,604 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 538 predicate places. [2024-06-21 19:09:29,604 INFO L495 AbstractCegarLoop]: Abstraction has has 568 places, 420 transitions, 5081 flow [2024-06-21 19:09:29,604 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) [2024-06-21 19:09:29,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:09:29,604 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:09:29,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2024-06-21 19:09:29,604 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)] === [2024-06-21 19:09:29,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:09:29,605 INFO L85 PathProgramCache]: Analyzing trace with hash 2135003459, now seen corresponding path program 6 times [2024-06-21 19:09:29,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:09:29,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979677670] [2024-06-21 19:09:29,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:09:29,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:09:29,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:09:30,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:09:30,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:09:30,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979677670] [2024-06-21 19:09:30,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979677670] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:09:30,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:09:30,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:09:30,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341039114] [2024-06-21 19:09:30,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:09:30,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:09:30,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:09:30,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:09:30,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:09:31,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:09:31,049 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) [2024-06-21 19:09:31,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:09:31,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:09:31,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:09:31,581 INFO L124 PetriNetUnfolderBase]: 1002/1905 cut-off events. [2024-06-21 19:09:31,581 INFO L125 PetriNetUnfolderBase]: For 325638/325638 co-relation queries the response was YES. [2024-06-21 19:09:31,606 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. [2024-06-21 19:09:31,611 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 330 selfloop transitions, 103 changer transitions 0/435 dead transitions. [2024-06-21 19:09:31,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 572 places, 435 transitions, 6037 flow [2024-06-21 19:09:31,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:09:31,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:09:31,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-21 19:09:31,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39002932551319647 [2024-06-21 19:09:31,613 INFO L175 Difference]: Start difference. First operand has 568 places, 420 transitions, 5081 flow. Second operand 11 states and 133 transitions. [2024-06-21 19:09:31,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 572 places, 435 transitions, 6037 flow [2024-06-21 19:09:33,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 558 places, 435 transitions, 5987 flow, removed 6 selfloop flow, removed 14 redundant places. [2024-06-21 19:09:33,245 INFO L231 Difference]: Finished difference. Result has 559 places, 423 transitions, 5307 flow [2024-06-21 19:09:33,245 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} [2024-06-21 19:09:33,245 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 529 predicate places. [2024-06-21 19:09:33,245 INFO L495 AbstractCegarLoop]: Abstraction has has 559 places, 423 transitions, 5307 flow [2024-06-21 19:09:33,246 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) [2024-06-21 19:09:33,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:09:33,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:09:33,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2024-06-21 19:09:33,246 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)] === [2024-06-21 19:09:33,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:09:33,246 INFO L85 PathProgramCache]: Analyzing trace with hash 363416199, now seen corresponding path program 7 times [2024-06-21 19:09:33,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:09:33,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399461831] [2024-06-21 19:09:33,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:09:33,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:09:33,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:09:34,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:09:34,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:09:34,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399461831] [2024-06-21 19:09:34,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399461831] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:09:34,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:09:34,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:09:34,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625931699] [2024-06-21 19:09:34,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:09:34,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:09:34,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:09:34,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:09:34,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:09:34,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-21 19:09:34,751 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) [2024-06-21 19:09:34,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:09:34,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-21 19:09:34,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:09:35,313 INFO L124 PetriNetUnfolderBase]: 1041/1987 cut-off events. [2024-06-21 19:09:35,313 INFO L125 PetriNetUnfolderBase]: For 489739/489739 co-relation queries the response was YES. [2024-06-21 19:09:35,337 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. [2024-06-21 19:09:35,343 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 316 selfloop transitions, 121 changer transitions 6/446 dead transitions. [2024-06-21 19:09:35,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 569 places, 446 transitions, 7035 flow [2024-06-21 19:09:35,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:09:35,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:09:35,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 156 transitions. [2024-06-21 19:09:35,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4574780058651026 [2024-06-21 19:09:35,344 INFO L175 Difference]: Start difference. First operand has 559 places, 423 transitions, 5307 flow. Second operand 11 states and 156 transitions. [2024-06-21 19:09:35,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 569 places, 446 transitions, 7035 flow [2024-06-21 19:09:37,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 563 places, 446 transitions, 6862 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-21 19:09:37,829 INFO L231 Difference]: Finished difference. Result has 565 places, 424 transitions, 5450 flow [2024-06-21 19:09:37,830 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} [2024-06-21 19:09:37,830 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 535 predicate places. [2024-06-21 19:09:37,830 INFO L495 AbstractCegarLoop]: Abstraction has has 565 places, 424 transitions, 5450 flow [2024-06-21 19:09:37,830 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) [2024-06-21 19:09:37,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:09:37,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:09:37,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2024-06-21 19:09:37,831 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)] === [2024-06-21 19:09:37,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:09:37,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1168350736, now seen corresponding path program 2 times [2024-06-21 19:09:37,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:09:37,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771931041] [2024-06-21 19:09:37,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:09:37,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:09:37,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:09:39,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:09:39,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:09:39,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771931041] [2024-06-21 19:09:39,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771931041] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:09:39,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:09:39,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:09:39,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461051846] [2024-06-21 19:09:39,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:09:39,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:09:39,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:09:39,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:09:39,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:09:39,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:09:39,390 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) [2024-06-21 19:09:39,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:09:39,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:09:39,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:09:40,032 INFO L124 PetriNetUnfolderBase]: 1023/1952 cut-off events. [2024-06-21 19:09:40,033 INFO L125 PetriNetUnfolderBase]: For 398300/398300 co-relation queries the response was YES. [2024-06-21 19:09:40,054 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. [2024-06-21 19:09:40,059 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 413 selfloop transitions, 20 changer transitions 0/435 dead transitions. [2024-06-21 19:09:40,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 573 places, 435 transitions, 6396 flow [2024-06-21 19:09:40,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:09:40,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:09:40,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 97 transitions. [2024-06-21 19:09:40,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31290322580645163 [2024-06-21 19:09:40,060 INFO L175 Difference]: Start difference. First operand has 565 places, 424 transitions, 5450 flow. Second operand 10 states and 97 transitions. [2024-06-21 19:09:40,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 573 places, 435 transitions, 6396 flow [2024-06-21 19:09:42,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 565 places, 435 transitions, 6171 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-21 19:09:42,276 INFO L231 Difference]: Finished difference. Result has 566 places, 426 transitions, 5337 flow [2024-06-21 19:09:42,276 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} [2024-06-21 19:09:42,276 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 536 predicate places. [2024-06-21 19:09:42,276 INFO L495 AbstractCegarLoop]: Abstraction has has 566 places, 426 transitions, 5337 flow [2024-06-21 19:09:42,276 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) [2024-06-21 19:09:42,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:09:42,277 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:09:42,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2024-06-21 19:09:42,277 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)] === [2024-06-21 19:09:42,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:09:42,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1933439413, now seen corresponding path program 19 times [2024-06-21 19:09:42,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:09:42,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144725880] [2024-06-21 19:09:42,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:09:42,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:09:42,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:09:43,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:09:43,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:09:43,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144725880] [2024-06-21 19:09:43,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144725880] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:09:43,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:09:43,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:09:43,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593977913] [2024-06-21 19:09:43,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:09:43,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:09:43,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:09:43,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:09:43,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:09:43,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:09:43,895 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) [2024-06-21 19:09:43,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:09:43,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:09:43,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:09:44,488 INFO L124 PetriNetUnfolderBase]: 1034/1973 cut-off events. [2024-06-21 19:09:44,488 INFO L125 PetriNetUnfolderBase]: For 439937/439937 co-relation queries the response was YES. [2024-06-21 19:09:44,512 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. [2024-06-21 19:09:44,518 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 330 selfloop transitions, 109 changer transitions 0/441 dead transitions. [2024-06-21 19:09:44,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 575 places, 441 transitions, 6601 flow [2024-06-21 19:09:44,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:09:44,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:09:44,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-21 19:09:44,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4258064516129032 [2024-06-21 19:09:44,519 INFO L175 Difference]: Start difference. First operand has 566 places, 426 transitions, 5337 flow. Second operand 10 states and 132 transitions. [2024-06-21 19:09:44,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 575 places, 441 transitions, 6601 flow [2024-06-21 19:09:46,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 566 places, 441 transitions, 6508 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-21 19:09:46,656 INFO L231 Difference]: Finished difference. Result has 567 places, 428 transitions, 5514 flow [2024-06-21 19:09:46,656 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} [2024-06-21 19:09:46,656 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 537 predicate places. [2024-06-21 19:09:46,656 INFO L495 AbstractCegarLoop]: Abstraction has has 567 places, 428 transitions, 5514 flow [2024-06-21 19:09:46,657 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) [2024-06-21 19:09:46,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:09:46,657 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:09:46,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2024-06-21 19:09:46,657 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)] === [2024-06-21 19:09:46,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:09:46,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1168350953, now seen corresponding path program 20 times [2024-06-21 19:09:46,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:09:46,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016682199] [2024-06-21 19:09:46,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:09:46,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:09:46,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:09:48,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:09:48,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:09:48,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016682199] [2024-06-21 19:09:48,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016682199] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:09:48,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:09:48,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:09:48,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938314291] [2024-06-21 19:09:48,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:09:48,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:09:48,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:09:48,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:09:48,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:09:48,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:09:48,481 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) [2024-06-21 19:09:48,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:09:48,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:09:48,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:09:49,234 INFO L124 PetriNetUnfolderBase]: 1038/1981 cut-off events. [2024-06-21 19:09:49,235 INFO L125 PetriNetUnfolderBase]: For 437723/437723 co-relation queries the response was YES. [2024-06-21 19:09:49,259 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. [2024-06-21 19:09:49,264 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 420 selfloop transitions, 18 changer transitions 0/440 dead transitions. [2024-06-21 19:09:49,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 577 places, 440 transitions, 6438 flow [2024-06-21 19:09:49,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:09:49,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:09:49,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 103 transitions. [2024-06-21 19:09:49,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3020527859237537 [2024-06-21 19:09:49,265 INFO L175 Difference]: Start difference. First operand has 567 places, 428 transitions, 5514 flow. Second operand 11 states and 103 transitions. [2024-06-21 19:09:49,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 577 places, 440 transitions, 6438 flow [2024-06-21 19:09:51,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 571 places, 440 transitions, 6280 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-21 19:09:51,364 INFO L231 Difference]: Finished difference. Result has 572 places, 429 transitions, 5422 flow [2024-06-21 19:09:51,364 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} [2024-06-21 19:09:51,364 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 542 predicate places. [2024-06-21 19:09:51,364 INFO L495 AbstractCegarLoop]: Abstraction has has 572 places, 429 transitions, 5422 flow [2024-06-21 19:09:51,365 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) [2024-06-21 19:09:51,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:09:51,365 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:09:51,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2024-06-21 19:09:51,365 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)] === [2024-06-21 19:09:51,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:09:51,365 INFO L85 PathProgramCache]: Analyzing trace with hash -742834733, now seen corresponding path program 21 times [2024-06-21 19:09:51,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:09:51,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999327571] [2024-06-21 19:09:51,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:09:51,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:09:51,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:09:53,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:09:53,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:09:53,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999327571] [2024-06-21 19:09:53,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999327571] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:09:53,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:09:53,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:09:53,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032683724] [2024-06-21 19:09:53,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:09:53,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:09:53,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:09:53,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:09:53,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:09:53,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:09:53,488 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) [2024-06-21 19:09:53,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:09:53,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:09:53,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:09:54,219 INFO L124 PetriNetUnfolderBase]: 1049/2002 cut-off events. [2024-06-21 19:09:54,220 INFO L125 PetriNetUnfolderBase]: For 469522/469522 co-relation queries the response was YES. [2024-06-21 19:09:54,242 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. [2024-06-21 19:09:54,247 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 329 selfloop transitions, 114 changer transitions 0/445 dead transitions. [2024-06-21 19:09:54,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 581 places, 445 transitions, 6706 flow [2024-06-21 19:09:54,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:09:54,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:09:54,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-21 19:09:54,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4161290322580645 [2024-06-21 19:09:54,248 INFO L175 Difference]: Start difference. First operand has 572 places, 429 transitions, 5422 flow. Second operand 10 states and 129 transitions. [2024-06-21 19:09:54,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 581 places, 445 transitions, 6706 flow [2024-06-21 19:09:56,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 572 places, 445 transitions, 6650 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-21 19:09:56,594 INFO L231 Difference]: Finished difference. Result has 573 places, 431 transitions, 5652 flow [2024-06-21 19:09:56,595 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} [2024-06-21 19:09:56,595 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 543 predicate places. [2024-06-21 19:09:56,595 INFO L495 AbstractCegarLoop]: Abstraction has has 573 places, 431 transitions, 5652 flow [2024-06-21 19:09:56,595 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) [2024-06-21 19:09:56,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:09:56,595 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:09:56,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2024-06-21 19:09:56,596 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)] === [2024-06-21 19:09:56,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:09:56,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1423662171, now seen corresponding path program 22 times [2024-06-21 19:09:56,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:09:56,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699655956] [2024-06-21 19:09:56,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:09:56,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:09:56,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:09:58,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:09:58,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:09:58,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699655956] [2024-06-21 19:09:58,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699655956] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:09:58,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:09:58,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:09:58,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428197551] [2024-06-21 19:09:58,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:09:58,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:09:58,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:09:58,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:09:58,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:09:58,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:09:58,189 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) [2024-06-21 19:09:58,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:09:58,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:09:58,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:09:58,767 INFO L124 PetriNetUnfolderBase]: 1053/2010 cut-off events. [2024-06-21 19:09:58,767 INFO L125 PetriNetUnfolderBase]: For 475879/475879 co-relation queries the response was YES. [2024-06-21 19:09:58,792 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. [2024-06-21 19:09:58,798 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 290 selfloop transitions, 151 changer transitions 0/443 dead transitions. [2024-06-21 19:09:58,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 582 places, 443 transitions, 6586 flow [2024-06-21 19:09:58,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:09:58,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:09:58,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-21 19:09:58,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3967741935483871 [2024-06-21 19:09:58,799 INFO L175 Difference]: Start difference. First operand has 573 places, 431 transitions, 5652 flow. Second operand 10 states and 123 transitions. [2024-06-21 19:09:58,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 582 places, 443 transitions, 6586 flow [2024-06-21 19:10:01,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 576 places, 443 transitions, 6412 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-21 19:10:01,062 INFO L231 Difference]: Finished difference. Result has 577 places, 432 transitions, 5815 flow [2024-06-21 19:10:01,062 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} [2024-06-21 19:10:01,063 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 547 predicate places. [2024-06-21 19:10:01,063 INFO L495 AbstractCegarLoop]: Abstraction has has 577 places, 432 transitions, 5815 flow [2024-06-21 19:10:01,063 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) [2024-06-21 19:10:01,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:10:01,063 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:10:01,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2024-06-21 19:10:01,063 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)] === [2024-06-21 19:10:01,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:10:01,064 INFO L85 PathProgramCache]: Analyzing trace with hash -576728427, now seen corresponding path program 8 times [2024-06-21 19:10:01,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:10:01,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224133223] [2024-06-21 19:10:01,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:10:01,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:10:01,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:10:02,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:10:02,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:10:02,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224133223] [2024-06-21 19:10:02,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224133223] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:10:02,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:10:02,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:10:02,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691147645] [2024-06-21 19:10:02,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:10:02,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:10:02,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:10:02,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:10:02,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:10:02,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:10:02,465 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) [2024-06-21 19:10:02,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:10:02,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:10:02,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:10:03,136 INFO L124 PetriNetUnfolderBase]: 1057/2018 cut-off events. [2024-06-21 19:10:03,136 INFO L125 PetriNetUnfolderBase]: For 483655/483655 co-relation queries the response was YES. [2024-06-21 19:10:03,157 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. [2024-06-21 19:10:03,161 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 335 selfloop transitions, 110 changer transitions 0/447 dead transitions. [2024-06-21 19:10:03,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 587 places, 447 transitions, 6799 flow [2024-06-21 19:10:03,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:10:03,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:10:03,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-21 19:10:03,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39002932551319647 [2024-06-21 19:10:03,177 INFO L175 Difference]: Start difference. First operand has 577 places, 432 transitions, 5815 flow. Second operand 11 states and 133 transitions. [2024-06-21 19:10:03,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 587 places, 447 transitions, 6799 flow [2024-06-21 19:10:05,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 579 places, 447 transitions, 6474 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-21 19:10:05,601 INFO L231 Difference]: Finished difference. Result has 580 places, 435 transitions, 5784 flow [2024-06-21 19:10:05,601 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} [2024-06-21 19:10:05,601 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 550 predicate places. [2024-06-21 19:10:05,601 INFO L495 AbstractCegarLoop]: Abstraction has has 580 places, 435 transitions, 5784 flow [2024-06-21 19:10:05,601 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) [2024-06-21 19:10:05,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:10:05,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:10:05,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2024-06-21 19:10:05,602 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)] === [2024-06-21 19:10:05,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:10:05,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1166894534, now seen corresponding path program 3 times [2024-06-21 19:10:05,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:10:05,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76278879] [2024-06-21 19:10:05,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:10:05,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:10:05,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:10:07,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:10:07,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:10:07,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76278879] [2024-06-21 19:10:07,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76278879] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:10:07,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:10:07,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:10:07,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477942917] [2024-06-21 19:10:07,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:10:07,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:10:07,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:10:07,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:10:07,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:10:07,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:10:07,490 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) [2024-06-21 19:10:07,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:10:07,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:10:07,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:10:08,182 INFO L124 PetriNetUnfolderBase]: 1055/2015 cut-off events. [2024-06-21 19:10:08,182 INFO L125 PetriNetUnfolderBase]: For 462846/462846 co-relation queries the response was YES. [2024-06-21 19:10:08,208 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. [2024-06-21 19:10:08,214 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 420 selfloop transitions, 23 changer transitions 0/445 dead transitions. [2024-06-21 19:10:08,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 590 places, 445 transitions, 6692 flow [2024-06-21 19:10:08,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:10:08,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:10:08,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 106 transitions. [2024-06-21 19:10:08,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31085043988269795 [2024-06-21 19:10:08,215 INFO L175 Difference]: Start difference. First operand has 580 places, 435 transitions, 5784 flow. Second operand 11 states and 106 transitions. [2024-06-21 19:10:08,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 590 places, 445 transitions, 6692 flow [2024-06-21 19:10:10,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 584 places, 445 transitions, 6467 flow, removed 45 selfloop flow, removed 6 redundant places. [2024-06-21 19:10:10,686 INFO L231 Difference]: Finished difference. Result has 585 places, 435 transitions, 5611 flow [2024-06-21 19:10:10,686 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} [2024-06-21 19:10:10,686 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 555 predicate places. [2024-06-21 19:10:10,686 INFO L495 AbstractCegarLoop]: Abstraction has has 585 places, 435 transitions, 5611 flow [2024-06-21 19:10:10,686 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) [2024-06-21 19:10:10,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:10:10,687 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:10:10,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2024-06-21 19:10:10,687 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)] === [2024-06-21 19:10:10,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:10:10,688 INFO L85 PathProgramCache]: Analyzing trace with hash -584347483, now seen corresponding path program 23 times [2024-06-21 19:10:10,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:10:10,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075535627] [2024-06-21 19:10:10,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:10:10,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:10:10,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:10:12,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:10:12,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:10:12,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075535627] [2024-06-21 19:10:12,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075535627] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:10:12,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:10:12,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:10:12,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128913020] [2024-06-21 19:10:12,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:10:12,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:10:12,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:10:12,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:10:12,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:10:12,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:10:12,695 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) [2024-06-21 19:10:12,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:10:12,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:10:12,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:10:13,387 INFO L124 PetriNetUnfolderBase]: 1067/2044 cut-off events. [2024-06-21 19:10:13,387 INFO L125 PetriNetUnfolderBase]: For 555727/555727 co-relation queries the response was YES. [2024-06-21 19:10:13,413 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. [2024-06-21 19:10:13,418 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 313 selfloop transitions, 125 changer transitions 10/450 dead transitions. [2024-06-21 19:10:13,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 595 places, 450 transitions, 6587 flow [2024-06-21 19:10:13,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:10:13,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:10:13,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-21 19:10:13,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40762463343108507 [2024-06-21 19:10:13,419 INFO L175 Difference]: Start difference. First operand has 585 places, 435 transitions, 5611 flow. Second operand 11 states and 139 transitions. [2024-06-21 19:10:13,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 595 places, 450 transitions, 6587 flow [2024-06-21 19:10:15,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 585 places, 450 transitions, 6534 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-21 19:10:15,630 INFO L231 Difference]: Finished difference. Result has 586 places, 431 transitions, 5771 flow [2024-06-21 19:10:15,630 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} [2024-06-21 19:10:15,630 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 556 predicate places. [2024-06-21 19:10:15,631 INFO L495 AbstractCegarLoop]: Abstraction has has 586 places, 431 transitions, 5771 flow [2024-06-21 19:10:15,631 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) [2024-06-21 19:10:15,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:10:15,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:10:15,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2024-06-21 19:10:15,631 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)] === [2024-06-21 19:10:15,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:10:15,632 INFO L85 PathProgramCache]: Analyzing trace with hash 363139493, now seen corresponding path program 24 times [2024-06-21 19:10:15,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:10:15,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830993385] [2024-06-21 19:10:15,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:10:15,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:10:15,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:10:17,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:10:17,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:10:17,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830993385] [2024-06-21 19:10:17,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830993385] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:10:17,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:10:17,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:10:17,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914272664] [2024-06-21 19:10:17,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:10:17,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:10:17,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:10:17,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:10:17,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:10:17,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:10:17,223 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) [2024-06-21 19:10:17,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:10:17,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:10:17,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:10:17,894 INFO L124 PetriNetUnfolderBase]: 1053/2013 cut-off events. [2024-06-21 19:10:17,894 INFO L125 PetriNetUnfolderBase]: For 486410/486410 co-relation queries the response was YES. [2024-06-21 19:10:17,920 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. [2024-06-21 19:10:17,925 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 327 selfloop transitions, 114 changer transitions 0/443 dead transitions. [2024-06-21 19:10:17,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 591 places, 443 transitions, 6707 flow [2024-06-21 19:10:17,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:10:17,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:10:17,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-21 19:10:17,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4129032258064516 [2024-06-21 19:10:17,926 INFO L175 Difference]: Start difference. First operand has 586 places, 431 transitions, 5771 flow. Second operand 10 states and 128 transitions. [2024-06-21 19:10:17,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 591 places, 443 transitions, 6707 flow [2024-06-21 19:10:20,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 581 places, 443 transitions, 6453 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-21 19:10:20,254 INFO L231 Difference]: Finished difference. Result has 582 places, 432 transitions, 5781 flow [2024-06-21 19:10:20,255 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} [2024-06-21 19:10:20,255 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 552 predicate places. [2024-06-21 19:10:20,255 INFO L495 AbstractCegarLoop]: Abstraction has has 582 places, 432 transitions, 5781 flow [2024-06-21 19:10:20,255 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) [2024-06-21 19:10:20,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:10:20,255 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:10:20,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2024-06-21 19:10:20,256 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)] === [2024-06-21 19:10:20,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:10:20,256 INFO L85 PathProgramCache]: Analyzing trace with hash -584353063, now seen corresponding path program 25 times [2024-06-21 19:10:20,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:10:20,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592233642] [2024-06-21 19:10:20,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:10:20,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:10:20,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:10:21,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:10:21,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:10:21,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592233642] [2024-06-21 19:10:21,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592233642] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:10:21,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:10:21,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:10:21,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607907807] [2024-06-21 19:10:21,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:10:21,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:10:21,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:10:21,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:10:21,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:10:21,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:10:21,798 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) [2024-06-21 19:10:21,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:10:21,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:10:21,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:10:22,347 INFO L124 PetriNetUnfolderBase]: 1064/2034 cut-off events. [2024-06-21 19:10:22,347 INFO L125 PetriNetUnfolderBase]: For 506986/506986 co-relation queries the response was YES. [2024-06-21 19:10:22,373 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. [2024-06-21 19:10:22,378 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 321 selfloop transitions, 124 changer transitions 0/447 dead transitions. [2024-06-21 19:10:22,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 591 places, 447 transitions, 7087 flow [2024-06-21 19:10:22,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:10:22,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:10:22,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-21 19:10:22,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4096774193548387 [2024-06-21 19:10:22,380 INFO L175 Difference]: Start difference. First operand has 582 places, 432 transitions, 5781 flow. Second operand 10 states and 127 transitions. [2024-06-21 19:10:22,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 591 places, 447 transitions, 7087 flow [2024-06-21 19:10:24,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 583 places, 447 transitions, 6833 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-21 19:10:24,968 INFO L231 Difference]: Finished difference. Result has 584 places, 434 transitions, 5845 flow [2024-06-21 19:10:24,969 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} [2024-06-21 19:10:24,969 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 554 predicate places. [2024-06-21 19:10:24,969 INFO L495 AbstractCegarLoop]: Abstraction has has 584 places, 434 transitions, 5845 flow [2024-06-21 19:10:24,969 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) [2024-06-21 19:10:24,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:10:24,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:10:24,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2024-06-21 19:10:24,970 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)] === [2024-06-21 19:10:24,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:10:24,971 INFO L85 PathProgramCache]: Analyzing trace with hash -2141734837, now seen corresponding path program 9 times [2024-06-21 19:10:24,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:10:24,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692743502] [2024-06-21 19:10:24,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:10:24,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:10:24,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:10:26,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:10:26,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:10:26,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692743502] [2024-06-21 19:10:26,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692743502] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:10:26,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:10:26,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:10:26,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423164564] [2024-06-21 19:10:26,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:10:26,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:10:26,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:10:26,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:10:26,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:10:26,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-21 19:10:26,283 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) [2024-06-21 19:10:26,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:10:26,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-21 19:10:26,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:10:26,959 INFO L124 PetriNetUnfolderBase]: 1098/2108 cut-off events. [2024-06-21 19:10:26,959 INFO L125 PetriNetUnfolderBase]: For 689493/689493 co-relation queries the response was YES. [2024-06-21 19:10:26,987 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. [2024-06-21 19:10:26,994 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 319 selfloop transitions, 125 changer transitions 7/454 dead transitions. [2024-06-21 19:10:26,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 594 places, 454 transitions, 7247 flow [2024-06-21 19:10:26,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:10:26,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:10:26,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 154 transitions. [2024-06-21 19:10:26,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45161290322580644 [2024-06-21 19:10:26,996 INFO L175 Difference]: Start difference. First operand has 584 places, 434 transitions, 5845 flow. Second operand 11 states and 154 transitions. [2024-06-21 19:10:26,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 594 places, 454 transitions, 7247 flow [2024-06-21 19:10:29,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 588 places, 454 transitions, 7044 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-21 19:10:29,825 INFO L231 Difference]: Finished difference. Result has 589 places, 432 transitions, 5882 flow [2024-06-21 19:10:29,825 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} [2024-06-21 19:10:29,825 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 559 predicate places. [2024-06-21 19:10:29,825 INFO L495 AbstractCegarLoop]: Abstraction has has 589 places, 432 transitions, 5882 flow [2024-06-21 19:10:29,826 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) [2024-06-21 19:10:29,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:10:29,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:10:29,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2024-06-21 19:10:29,826 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)] === [2024-06-21 19:10:29,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:10:29,826 INFO L85 PathProgramCache]: Analyzing trace with hash 363139710, now seen corresponding path program 4 times [2024-06-21 19:10:29,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:10:29,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266710489] [2024-06-21 19:10:29,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:10:29,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:10:29,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:10:31,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:10:31,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:10:31,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266710489] [2024-06-21 19:10:31,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266710489] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:10:31,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:10:31,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:10:31,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239725209] [2024-06-21 19:10:31,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:10:31,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:10:31,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:10:31,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:10:31,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:10:31,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:10:31,350 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) [2024-06-21 19:10:31,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:10:31,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:10:31,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:10:31,918 INFO L124 PetriNetUnfolderBase]: 1078/2067 cut-off events. [2024-06-21 19:10:31,919 INFO L125 PetriNetUnfolderBase]: For 596346/596346 co-relation queries the response was YES. [2024-06-21 19:10:31,946 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. [2024-06-21 19:10:31,952 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 321 selfloop transitions, 118 changer transitions 0/441 dead transitions. [2024-06-21 19:10:31,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 595 places, 441 transitions, 6780 flow [2024-06-21 19:10:31,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:10:31,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:10:31,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-21 19:10:31,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43010752688172044 [2024-06-21 19:10:31,953 INFO L175 Difference]: Start difference. First operand has 589 places, 432 transitions, 5882 flow. Second operand 9 states and 120 transitions. [2024-06-21 19:10:31,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 595 places, 441 transitions, 6780 flow [2024-06-21 19:10:34,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 585 places, 441 transitions, 6491 flow, removed 21 selfloop flow, removed 10 redundant places. [2024-06-21 19:10:34,369 INFO L231 Difference]: Finished difference. Result has 586 places, 432 transitions, 5846 flow [2024-06-21 19:10:34,370 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} [2024-06-21 19:10:34,370 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 556 predicate places. [2024-06-21 19:10:34,370 INFO L495 AbstractCegarLoop]: Abstraction has has 586 places, 432 transitions, 5846 flow [2024-06-21 19:10:34,370 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) [2024-06-21 19:10:34,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:10:34,370 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:10:34,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2024-06-21 19:10:34,371 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)] === [2024-06-21 19:10:34,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:10:34,371 INFO L85 PathProgramCache]: Analyzing trace with hash 2127586213, now seen corresponding path program 26 times [2024-06-21 19:10:34,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:10:34,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179637405] [2024-06-21 19:10:34,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:10:34,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:10:34,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:10:35,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:10:35,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:10:35,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179637405] [2024-06-21 19:10:35,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179637405] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:10:35,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:10:35,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:10:35,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007760230] [2024-06-21 19:10:35,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:10:35,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:10:35,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:10:35,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:10:35,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:10:35,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:10:35,921 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) [2024-06-21 19:10:35,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:10:35,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:10:35,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:10:36,506 INFO L124 PetriNetUnfolderBase]: 1082/2075 cut-off events. [2024-06-21 19:10:36,506 INFO L125 PetriNetUnfolderBase]: For 604797/604797 co-relation queries the response was YES. [2024-06-21 19:10:36,534 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. [2024-06-21 19:10:36,540 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 332 selfloop transitions, 110 changer transitions 0/444 dead transitions. [2024-06-21 19:10:36,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 595 places, 444 transitions, 6788 flow [2024-06-21 19:10:36,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:10:36,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:10:36,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-21 19:10:36,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4161290322580645 [2024-06-21 19:10:36,541 INFO L175 Difference]: Start difference. First operand has 586 places, 432 transitions, 5846 flow. Second operand 10 states and 129 transitions. [2024-06-21 19:10:36,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 595 places, 444 transitions, 6788 flow [2024-06-21 19:10:39,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 587 places, 444 transitions, 6546 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-21 19:10:39,122 INFO L231 Difference]: Finished difference. Result has 588 places, 433 transitions, 5864 flow [2024-06-21 19:10:39,123 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} [2024-06-21 19:10:39,123 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 558 predicate places. [2024-06-21 19:10:39,123 INFO L495 AbstractCegarLoop]: Abstraction has has 588 places, 433 transitions, 5864 flow [2024-06-21 19:10:39,123 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) [2024-06-21 19:10:39,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:10:39,123 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:10:39,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2024-06-21 19:10:39,124 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)] === [2024-06-21 19:10:39,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:10:39,125 INFO L85 PathProgramCache]: Analyzing trace with hash -840321981, now seen corresponding path program 27 times [2024-06-21 19:10:39,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:10:39,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737393437] [2024-06-21 19:10:39,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:10:39,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:10:39,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:10:40,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:10:40,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:10:40,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737393437] [2024-06-21 19:10:40,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737393437] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:10:40,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:10:40,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:10:40,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789669664] [2024-06-21 19:10:40,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:10:40,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:10:40,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:10:40,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:10:40,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:10:40,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:10:40,728 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) [2024-06-21 19:10:40,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:10:40,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:10:40,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:10:41,574 INFO L124 PetriNetUnfolderBase]: 1086/2083 cut-off events. [2024-06-21 19:10:41,575 INFO L125 PetriNetUnfolderBase]: For 612604/612604 co-relation queries the response was YES. [2024-06-21 19:10:41,602 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. [2024-06-21 19:10:41,608 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 329 selfloop transitions, 114 changer transitions 0/445 dead transitions. [2024-06-21 19:10:41,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 597 places, 445 transitions, 6790 flow [2024-06-21 19:10:41,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:10:41,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:10:41,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-21 19:10:41,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4064516129032258 [2024-06-21 19:10:41,609 INFO L175 Difference]: Start difference. First operand has 588 places, 433 transitions, 5864 flow. Second operand 10 states and 126 transitions. [2024-06-21 19:10:41,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 597 places, 445 transitions, 6790 flow [2024-06-21 19:10:44,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 589 places, 445 transitions, 6540 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-21 19:10:44,146 INFO L231 Difference]: Finished difference. Result has 590 places, 434 transitions, 5864 flow [2024-06-21 19:10:44,147 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} [2024-06-21 19:10:44,147 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 560 predicate places. [2024-06-21 19:10:44,147 INFO L495 AbstractCegarLoop]: Abstraction has has 590 places, 434 transitions, 5864 flow [2024-06-21 19:10:44,147 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) [2024-06-21 19:10:44,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:10:44,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:10:44,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2024-06-21 19:10:44,147 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)] === [2024-06-21 19:10:44,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:10:44,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1933444993, now seen corresponding path program 28 times [2024-06-21 19:10:44,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:10:44,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864036220] [2024-06-21 19:10:44,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:10:44,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:10:44,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:10:46,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:10:46,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:10:46,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864036220] [2024-06-21 19:10:46,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864036220] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:10:46,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:10:46,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:10:46,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110082553] [2024-06-21 19:10:46,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:10:46,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:10:46,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:10:46,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:10:46,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:10:46,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:10:46,243 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) [2024-06-21 19:10:46,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:10:46,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:10:46,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:10:47,079 INFO L124 PetriNetUnfolderBase]: 1116/2149 cut-off events. [2024-06-21 19:10:47,079 INFO L125 PetriNetUnfolderBase]: For 775911/775911 co-relation queries the response was YES. [2024-06-21 19:10:47,107 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. [2024-06-21 19:10:47,113 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 331 selfloop transitions, 102 changer transitions 21/456 dead transitions. [2024-06-21 19:10:47,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 600 places, 456 transitions, 6926 flow [2024-06-21 19:10:47,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:10:47,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:10:47,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-21 19:10:47,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4222873900293255 [2024-06-21 19:10:47,114 INFO L175 Difference]: Start difference. First operand has 590 places, 434 transitions, 5864 flow. Second operand 11 states and 144 transitions. [2024-06-21 19:10:47,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 600 places, 456 transitions, 6926 flow [2024-06-21 19:10:49,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 592 places, 456 transitions, 6678 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-21 19:10:49,722 INFO L231 Difference]: Finished difference. Result has 594 places, 427 transitions, 5762 flow [2024-06-21 19:10:49,722 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} [2024-06-21 19:10:49,723 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 564 predicate places. [2024-06-21 19:10:49,723 INFO L495 AbstractCegarLoop]: Abstraction has has 594 places, 427 transitions, 5762 flow [2024-06-21 19:10:49,723 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) [2024-06-21 19:10:49,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:10:49,723 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:10:49,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2024-06-21 19:10:49,723 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)] === [2024-06-21 19:10:49,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:10:49,724 INFO L85 PathProgramCache]: Analyzing trace with hash 2127378823, now seen corresponding path program 29 times [2024-06-21 19:10:49,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:10:49,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849225961] [2024-06-21 19:10:49,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:10:49,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:10:49,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:10:51,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:10:51,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:10:51,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849225961] [2024-06-21 19:10:51,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849225961] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:10:51,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:10:51,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:10:51,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974230980] [2024-06-21 19:10:51,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:10:51,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:10:51,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:10:51,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:10:51,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:10:51,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:10:51,312 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) [2024-06-21 19:10:51,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:10:51,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:10:51,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:10:51,988 INFO L124 PetriNetUnfolderBase]: 1073/2064 cut-off events. [2024-06-21 19:10:51,988 INFO L125 PetriNetUnfolderBase]: For 599772/599772 co-relation queries the response was YES. [2024-06-21 19:10:52,020 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. [2024-06-21 19:10:52,027 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 330 selfloop transitions, 108 changer transitions 0/440 dead transitions. [2024-06-21 19:10:52,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 598 places, 440 transitions, 6700 flow [2024-06-21 19:10:52,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:10:52,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:10:52,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-21 19:10:52,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4161290322580645 [2024-06-21 19:10:52,029 INFO L175 Difference]: Start difference. First operand has 594 places, 427 transitions, 5762 flow. Second operand 10 states and 129 transitions. [2024-06-21 19:10:52,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 598 places, 440 transitions, 6700 flow [2024-06-21 19:10:55,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 587 places, 440 transitions, 6480 flow, removed 7 selfloop flow, removed 11 redundant places. [2024-06-21 19:10:55,033 INFO L231 Difference]: Finished difference. Result has 588 places, 428 transitions, 5800 flow [2024-06-21 19:10:55,034 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} [2024-06-21 19:10:55,034 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 558 predicate places. [2024-06-21 19:10:55,034 INFO L495 AbstractCegarLoop]: Abstraction has has 588 places, 428 transitions, 5800 flow [2024-06-21 19:10:55,034 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) [2024-06-21 19:10:55,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:10:55,034 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:10:55,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2024-06-21 19:10:55,035 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)] === [2024-06-21 19:10:55,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:10:55,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1194600727, now seen corresponding path program 30 times [2024-06-21 19:10:55,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:10:55,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233332824] [2024-06-21 19:10:55,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:10:55,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:10:55,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:10:56,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:10:56,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:10:56,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233332824] [2024-06-21 19:10:56,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233332824] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:10:56,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:10:56,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:10:56,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553690552] [2024-06-21 19:10:56,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:10:56,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:10:56,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:10:56,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:10:56,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:10:56,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:10:56,593 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) [2024-06-21 19:10:56,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:10:56,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:10:56,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:10:57,294 INFO L124 PetriNetUnfolderBase]: 1070/2059 cut-off events. [2024-06-21 19:10:57,294 INFO L125 PetriNetUnfolderBase]: For 565606/565606 co-relation queries the response was YES. [2024-06-21 19:10:57,320 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. [2024-06-21 19:10:57,326 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 316 selfloop transitions, 121 changer transitions 0/439 dead transitions. [2024-06-21 19:10:57,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 597 places, 439 transitions, 6698 flow [2024-06-21 19:10:57,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:10:57,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:10:57,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-21 19:10:57,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4064516129032258 [2024-06-21 19:10:57,328 INFO L175 Difference]: Start difference. First operand has 588 places, 428 transitions, 5800 flow. Second operand 10 states and 126 transitions. [2024-06-21 19:10:57,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 597 places, 439 transitions, 6698 flow [2024-06-21 19:11:00,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 589 places, 439 transitions, 6434 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-21 19:11:00,097 INFO L231 Difference]: Finished difference. Result has 590 places, 428 transitions, 5782 flow [2024-06-21 19:11:00,097 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} [2024-06-21 19:11:00,098 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 560 predicate places. [2024-06-21 19:11:00,098 INFO L495 AbstractCegarLoop]: Abstraction has has 590 places, 428 transitions, 5782 flow [2024-06-21 19:11:00,098 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) [2024-06-21 19:11:00,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:11:00,098 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:11:00,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2024-06-21 19:11:00,098 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)] === [2024-06-21 19:11:00,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:11:00,099 INFO L85 PathProgramCache]: Analyzing trace with hash 987941707, now seen corresponding path program 31 times [2024-06-21 19:11:00,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:11:00,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077469467] [2024-06-21 19:11:00,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:11:00,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:11:00,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:11:01,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:11:01,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:11:01,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077469467] [2024-06-21 19:11:01,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077469467] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:11:01,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:11:01,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:11:01,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798254038] [2024-06-21 19:11:01,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:11:01,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:11:01,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:11:01,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:11:01,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:11:01,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:11:01,822 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) [2024-06-21 19:11:01,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:11:01,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:11:01,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:11:02,588 INFO L124 PetriNetUnfolderBase]: 1081/2080 cut-off events. [2024-06-21 19:11:02,588 INFO L125 PetriNetUnfolderBase]: For 597872/597872 co-relation queries the response was YES. [2024-06-21 19:11:02,620 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. [2024-06-21 19:11:02,627 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 316 selfloop transitions, 125 changer transitions 0/443 dead transitions. [2024-06-21 19:11:02,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 600 places, 443 transitions, 7100 flow [2024-06-21 19:11:02,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:11:02,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:11:02,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-21 19:11:02,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-21 19:11:02,628 INFO L175 Difference]: Start difference. First operand has 590 places, 428 transitions, 5782 flow. Second operand 11 states and 132 transitions. [2024-06-21 19:11:02,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 600 places, 443 transitions, 7100 flow [2024-06-21 19:11:05,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 591 places, 443 transitions, 6856 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-21 19:11:05,476 INFO L231 Difference]: Finished difference. Result has 592 places, 430 transitions, 5870 flow [2024-06-21 19:11:05,476 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} [2024-06-21 19:11:05,477 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 562 predicate places. [2024-06-21 19:11:05,477 INFO L495 AbstractCegarLoop]: Abstraction has has 592 places, 430 transitions, 5870 flow [2024-06-21 19:11:05,477 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) [2024-06-21 19:11:05,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:11:05,477 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:11:05,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2024-06-21 19:11:05,477 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)] === [2024-06-21 19:11:05,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:11:05,478 INFO L85 PathProgramCache]: Analyzing trace with hash 156336323, now seen corresponding path program 32 times [2024-06-21 19:11:05,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:11:05,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140440595] [2024-06-21 19:11:05,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:11:05,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:11:05,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:11:07,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:11:07,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:11:07,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140440595] [2024-06-21 19:11:07,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140440595] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:11:07,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:11:07,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:11:07,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268308836] [2024-06-21 19:11:07,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:11:07,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:11:07,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:11:07,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:11:07,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:11:07,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:11:07,256 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) [2024-06-21 19:11:07,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:11:07,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:11:07,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:11:08,077 INFO L124 PetriNetUnfolderBase]: 1085/2088 cut-off events. [2024-06-21 19:11:08,077 INFO L125 PetriNetUnfolderBase]: For 605629/605629 co-relation queries the response was YES. [2024-06-21 19:11:08,105 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. [2024-06-21 19:11:08,111 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 334 selfloop transitions, 108 changer transitions 0/444 dead transitions. [2024-06-21 19:11:08,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 602 places, 444 transitions, 6822 flow [2024-06-21 19:11:08,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:11:08,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:11:08,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-21 19:11:08,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2024-06-21 19:11:08,113 INFO L175 Difference]: Start difference. First operand has 592 places, 430 transitions, 5870 flow. Second operand 11 states and 136 transitions. [2024-06-21 19:11:08,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 602 places, 444 transitions, 6822 flow [2024-06-21 19:11:11,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 595 places, 444 transitions, 6606 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-21 19:11:11,085 INFO L231 Difference]: Finished difference. Result has 596 places, 431 transitions, 5916 flow [2024-06-21 19:11:11,085 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} [2024-06-21 19:11:11,085 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 566 predicate places. [2024-06-21 19:11:11,085 INFO L495 AbstractCegarLoop]: Abstraction has has 596 places, 431 transitions, 5916 flow [2024-06-21 19:11:11,085 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) [2024-06-21 19:11:11,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:11:11,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:11:11,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2024-06-21 19:11:11,086 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)] === [2024-06-21 19:11:11,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:11:11,086 INFO L85 PathProgramCache]: Analyzing trace with hash 987797557, now seen corresponding path program 33 times [2024-06-21 19:11:11,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:11:11,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230595352] [2024-06-21 19:11:11,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:11:11,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:11:11,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:11:12,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:11:12,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:11:12,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230595352] [2024-06-21 19:11:12,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230595352] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:11:12,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:11:12,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:11:12,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105108682] [2024-06-21 19:11:12,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:11:12,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:11:12,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:11:12,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:11:12,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:11:12,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:11:12,936 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) [2024-06-21 19:11:12,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:11:12,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:11:12,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:11:13,680 INFO L124 PetriNetUnfolderBase]: 1096/2109 cut-off events. [2024-06-21 19:11:13,681 INFO L125 PetriNetUnfolderBase]: For 644304/644304 co-relation queries the response was YES. [2024-06-21 19:11:13,709 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. [2024-06-21 19:11:13,715 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 315 selfloop transitions, 130 changer transitions 0/447 dead transitions. [2024-06-21 19:11:13,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 606 places, 447 transitions, 7256 flow [2024-06-21 19:11:13,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:11:13,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:11:13,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-21 19:11:13,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-21 19:11:13,717 INFO L175 Difference]: Start difference. First operand has 596 places, 431 transitions, 5916 flow. Second operand 11 states and 132 transitions. [2024-06-21 19:11:13,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 606 places, 447 transitions, 7256 flow [2024-06-21 19:11:16,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 597 places, 447 transitions, 7004 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-21 19:11:16,587 INFO L231 Difference]: Finished difference. Result has 598 places, 433 transitions, 6014 flow [2024-06-21 19:11:16,587 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} [2024-06-21 19:11:16,587 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 568 predicate places. [2024-06-21 19:11:16,587 INFO L495 AbstractCegarLoop]: Abstraction has has 598 places, 433 transitions, 6014 flow [2024-06-21 19:11:16,587 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) [2024-06-21 19:11:16,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:11:16,587 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:11:16,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2024-06-21 19:11:16,588 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)] === [2024-06-21 19:11:16,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:11:16,589 INFO L85 PathProgramCache]: Analyzing trace with hash 63662929, now seen corresponding path program 10 times [2024-06-21 19:11:16,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:11:16,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107384440] [2024-06-21 19:11:16,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:11:16,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:11:16,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:11:18,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:11:18,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:11:18,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107384440] [2024-06-21 19:11:18,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107384440] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:11:18,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:11:18,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:11:18,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175698585] [2024-06-21 19:11:18,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:11:18,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:11:18,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:11:18,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:11:18,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:11:18,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:11:18,214 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) [2024-06-21 19:11:18,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:11:18,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:11:18,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:11:19,104 INFO L124 PetriNetUnfolderBase]: 1108/2137 cut-off events. [2024-06-21 19:11:19,105 INFO L125 PetriNetUnfolderBase]: For 731060/731060 co-relation queries the response was YES. [2024-06-21 19:11:19,130 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. [2024-06-21 19:11:19,136 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 427 selfloop transitions, 18 changer transitions 7/454 dead transitions. [2024-06-21 19:11:19,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 610 places, 454 transitions, 7464 flow [2024-06-21 19:11:19,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 19:11:19,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 19:11:19,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 125 transitions. [2024-06-21 19:11:19,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31017369727047145 [2024-06-21 19:11:19,138 INFO L175 Difference]: Start difference. First operand has 598 places, 433 transitions, 6014 flow. Second operand 13 states and 125 transitions. [2024-06-21 19:11:19,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 610 places, 454 transitions, 7464 flow [2024-06-21 19:11:22,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 603 places, 454 transitions, 7244 flow, removed 29 selfloop flow, removed 7 redundant places. [2024-06-21 19:11:22,158 INFO L231 Difference]: Finished difference. Result has 604 places, 431 transitions, 5818 flow [2024-06-21 19:11:22,158 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} [2024-06-21 19:11:22,158 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 574 predicate places. [2024-06-21 19:11:22,158 INFO L495 AbstractCegarLoop]: Abstraction has has 604 places, 431 transitions, 5818 flow [2024-06-21 19:11:22,159 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) [2024-06-21 19:11:22,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:11:22,159 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:11:22,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2024-06-21 19:11:22,159 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)] === [2024-06-21 19:11:22,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:11:22,159 INFO L85 PathProgramCache]: Analyzing trace with hash -783649273, now seen corresponding path program 34 times [2024-06-21 19:11:22,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:11:22,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523106646] [2024-06-21 19:11:22,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:11:22,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:11:22,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:11:23,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:11:23,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:11:23,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523106646] [2024-06-21 19:11:23,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523106646] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:11:23,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:11:23,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:11:23,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343157511] [2024-06-21 19:11:23,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:11:23,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:11:23,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:11:23,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:11:23,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:11:24,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:11:24,016 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) [2024-06-21 19:11:24,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:11:24,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:11:24,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:11:24,769 INFO L124 PetriNetUnfolderBase]: 1087/2094 cut-off events. [2024-06-21 19:11:24,769 INFO L125 PetriNetUnfolderBase]: For 625538/625538 co-relation queries the response was YES. [2024-06-21 19:11:24,798 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. [2024-06-21 19:11:24,805 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 316 selfloop transitions, 124 changer transitions 0/442 dead transitions. [2024-06-21 19:11:24,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 611 places, 442 transitions, 6722 flow [2024-06-21 19:11:24,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:11:24,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:11:24,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-21 19:11:24,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-21 19:11:24,810 INFO L175 Difference]: Start difference. First operand has 604 places, 431 transitions, 5818 flow. Second operand 10 states and 124 transitions. [2024-06-21 19:11:24,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 611 places, 442 transitions, 6722 flow [2024-06-21 19:11:27,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 599 places, 442 transitions, 6665 flow, removed 12 selfloop flow, removed 12 redundant places. [2024-06-21 19:11:27,829 INFO L231 Difference]: Finished difference. Result has 600 places, 431 transitions, 6013 flow [2024-06-21 19:11:27,829 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} [2024-06-21 19:11:27,829 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 570 predicate places. [2024-06-21 19:11:27,829 INFO L495 AbstractCegarLoop]: Abstraction has has 600 places, 431 transitions, 6013 flow [2024-06-21 19:11:27,830 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) [2024-06-21 19:11:27,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:11:27,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:11:27,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2024-06-21 19:11:27,830 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)] === [2024-06-21 19:11:27,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:11:27,830 INFO L85 PathProgramCache]: Analyzing trace with hash -840327561, now seen corresponding path program 35 times [2024-06-21 19:11:27,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:11:27,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904476671] [2024-06-21 19:11:27,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:11:27,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:11:27,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:11:29,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:11:29,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:11:29,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904476671] [2024-06-21 19:11:29,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904476671] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:11:29,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:11:29,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:11:29,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035991542] [2024-06-21 19:11:29,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:11:29,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:11:29,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:11:29,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:11:29,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:11:29,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:11:29,599 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) [2024-06-21 19:11:29,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:11:29,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:11:29,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:11:30,477 INFO L124 PetriNetUnfolderBase]: 1084/2089 cut-off events. [2024-06-21 19:11:30,478 INFO L125 PetriNetUnfolderBase]: For 596175/596175 co-relation queries the response was YES. [2024-06-21 19:11:30,503 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. [2024-06-21 19:11:30,509 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 329 selfloop transitions, 112 changer transitions 0/443 dead transitions. [2024-06-21 19:11:30,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 610 places, 443 transitions, 6921 flow [2024-06-21 19:11:30,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:11:30,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:11:30,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-21 19:11:30,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39002932551319647 [2024-06-21 19:11:30,510 INFO L175 Difference]: Start difference. First operand has 600 places, 431 transitions, 6013 flow. Second operand 11 states and 133 transitions. [2024-06-21 19:11:30,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 610 places, 443 transitions, 6921 flow [2024-06-21 19:11:33,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 601 places, 443 transitions, 6659 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-21 19:11:33,363 INFO L231 Difference]: Finished difference. Result has 602 places, 431 transitions, 5979 flow [2024-06-21 19:11:33,364 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} [2024-06-21 19:11:33,364 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 572 predicate places. [2024-06-21 19:11:33,364 INFO L495 AbstractCegarLoop]: Abstraction has has 602 places, 431 transitions, 5979 flow [2024-06-21 19:11:33,364 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) [2024-06-21 19:11:33,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:11:33,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:11:33,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2024-06-21 19:11:33,365 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)] === [2024-06-21 19:11:33,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:11:33,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1168083547, now seen corresponding path program 11 times [2024-06-21 19:11:33,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:11:33,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562723929] [2024-06-21 19:11:33,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:11:33,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:11:33,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:11:34,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:11:34,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:11:34,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562723929] [2024-06-21 19:11:34,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562723929] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:11:34,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:11:34,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 19:11:34,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306779196] [2024-06-21 19:11:34,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:11:34,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 19:11:34,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:11:34,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 19:11:34,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-21 19:11:35,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:11:35,028 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) [2024-06-21 19:11:35,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:11:35,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:11:35,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:11:35,740 INFO L124 PetriNetUnfolderBase]: 1071/2066 cut-off events. [2024-06-21 19:11:35,741 INFO L125 PetriNetUnfolderBase]: For 571580/571580 co-relation queries the response was YES. [2024-06-21 19:11:35,768 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. [2024-06-21 19:11:35,774 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 417 selfloop transitions, 14 changer transitions 14/447 dead transitions. [2024-06-21 19:11:35,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 614 places, 447 transitions, 6995 flow [2024-06-21 19:11:35,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 19:11:35,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 19:11:35,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 119 transitions. [2024-06-21 19:11:35,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29528535980148884 [2024-06-21 19:11:35,775 INFO L175 Difference]: Start difference. First operand has 602 places, 431 transitions, 5979 flow. Second operand 13 states and 119 transitions. [2024-06-21 19:11:35,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 614 places, 447 transitions, 6995 flow [2024-06-21 19:11:38,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 604 places, 447 transitions, 6765 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-21 19:11:38,176 INFO L231 Difference]: Finished difference. Result has 605 places, 425 transitions, 5721 flow [2024-06-21 19:11:38,176 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} [2024-06-21 19:11:38,176 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 575 predicate places. [2024-06-21 19:11:38,176 INFO L495 AbstractCegarLoop]: Abstraction has has 605 places, 425 transitions, 5721 flow [2024-06-21 19:11:38,177 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) [2024-06-21 19:11:38,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:11:38,177 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:11:38,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2024-06-21 19:11:38,177 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)] === [2024-06-21 19:11:38,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:11:38,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1366391501, now seen corresponding path program 36 times [2024-06-21 19:11:38,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:11:38,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555440528] [2024-06-21 19:11:38,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:11:38,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:11:38,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:11:40,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:11:40,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:11:40,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555440528] [2024-06-21 19:11:40,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555440528] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:11:40,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:11:40,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:11:40,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328083972] [2024-06-21 19:11:40,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:11:40,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:11:40,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:11:40,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:11:40,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:11:40,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:11:40,144 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) [2024-06-21 19:11:40,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:11:40,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:11:40,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:11:40,858 INFO L124 PetriNetUnfolderBase]: 1043/2010 cut-off events. [2024-06-21 19:11:40,858 INFO L125 PetriNetUnfolderBase]: For 434910/434910 co-relation queries the response was YES. [2024-06-21 19:11:40,880 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. [2024-06-21 19:11:40,900 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 304 selfloop transitions, 135 changer transitions 0/441 dead transitions. [2024-06-21 19:11:40,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 607 places, 441 transitions, 6975 flow [2024-06-21 19:11:40,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:11:40,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:11:40,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 143 transitions. [2024-06-21 19:11:40,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3844086021505376 [2024-06-21 19:11:40,901 INFO L175 Difference]: Start difference. First operand has 605 places, 425 transitions, 5721 flow. Second operand 12 states and 143 transitions. [2024-06-21 19:11:40,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 607 places, 441 transitions, 6975 flow [2024-06-21 19:11:43,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 595 places, 441 transitions, 6929 flow, removed 9 selfloop flow, removed 12 redundant places. [2024-06-21 19:11:43,211 INFO L231 Difference]: Finished difference. Result has 596 places, 425 transitions, 5955 flow [2024-06-21 19:11:43,211 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} [2024-06-21 19:11:43,211 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 566 predicate places. [2024-06-21 19:11:43,211 INFO L495 AbstractCegarLoop]: Abstraction has has 596 places, 425 transitions, 5955 flow [2024-06-21 19:11:43,212 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) [2024-06-21 19:11:43,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:11:43,212 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:11:43,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2024-06-21 19:11:43,212 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)] === [2024-06-21 19:11:43,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:11:43,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1423869561, now seen corresponding path program 37 times [2024-06-21 19:11:43,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:11:43,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154815621] [2024-06-21 19:11:43,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:11:43,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:11:43,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:11:44,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:11:44,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:11:44,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154815621] [2024-06-21 19:11:44,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154815621] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:11:44,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:11:44,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:11:44,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917205501] [2024-06-21 19:11:44,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:11:44,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:11:44,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:11:44,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:11:44,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:11:44,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:11:44,817 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) [2024-06-21 19:11:44,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:11:44,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:11:44,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:11:45,365 INFO L124 PetriNetUnfolderBase]: 1047/2018 cut-off events. [2024-06-21 19:11:45,366 INFO L125 PetriNetUnfolderBase]: For 425896/425896 co-relation queries the response was YES. [2024-06-21 19:11:45,392 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. [2024-06-21 19:11:45,398 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 289 selfloop transitions, 148 changer transitions 0/439 dead transitions. [2024-06-21 19:11:45,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 605 places, 439 transitions, 7227 flow [2024-06-21 19:11:45,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:11:45,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:11:45,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-21 19:11:45,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-21 19:11:45,399 INFO L175 Difference]: Start difference. First operand has 596 places, 425 transitions, 5955 flow. Second operand 10 states and 125 transitions. [2024-06-21 19:11:45,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 605 places, 439 transitions, 7227 flow [2024-06-21 19:11:47,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 589 places, 439 transitions, 6617 flow, removed 26 selfloop flow, removed 16 redundant places. [2024-06-21 19:11:47,482 INFO L231 Difference]: Finished difference. Result has 590 places, 426 transitions, 5677 flow [2024-06-21 19:11:47,482 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} [2024-06-21 19:11:47,482 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 560 predicate places. [2024-06-21 19:11:47,483 INFO L495 AbstractCegarLoop]: Abstraction has has 590 places, 426 transitions, 5677 flow [2024-06-21 19:11:47,483 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) [2024-06-21 19:11:47,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:11:47,483 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:11:47,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2024-06-21 19:11:47,483 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)] === [2024-06-21 19:11:47,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:11:47,483 INFO L85 PathProgramCache]: Analyzing trace with hash -185964447, now seen corresponding path program 38 times [2024-06-21 19:11:47,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:11:47,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241387034] [2024-06-21 19:11:47,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:11:47,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:11:47,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:11:49,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:11:49,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:11:49,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241387034] [2024-06-21 19:11:49,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241387034] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:11:49,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:11:49,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:11:49,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934015128] [2024-06-21 19:11:49,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:11:49,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:11:49,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:11:49,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:11:49,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:11:49,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:11:49,127 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) [2024-06-21 19:11:49,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:11:49,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:11:49,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:11:49,650 INFO L124 PetriNetUnfolderBase]: 1044/2013 cut-off events. [2024-06-21 19:11:49,650 INFO L125 PetriNetUnfolderBase]: For 401150/401150 co-relation queries the response was YES. [2024-06-21 19:11:49,676 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. [2024-06-21 19:11:49,681 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 290 selfloop transitions, 145 changer transitions 0/437 dead transitions. [2024-06-21 19:11:49,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 599 places, 437 transitions, 6571 flow [2024-06-21 19:11:49,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:11:49,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:11:49,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-21 19:11:49,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-21 19:11:49,682 INFO L175 Difference]: Start difference. First operand has 590 places, 426 transitions, 5677 flow. Second operand 10 states and 125 transitions. [2024-06-21 19:11:49,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 599 places, 437 transitions, 6571 flow [2024-06-21 19:11:51,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 588 places, 437 transitions, 5992 flow, removed 25 selfloop flow, removed 11 redundant places. [2024-06-21 19:11:51,785 INFO L231 Difference]: Finished difference. Result has 589 places, 426 transitions, 5392 flow [2024-06-21 19:11:51,785 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} [2024-06-21 19:11:51,785 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 559 predicate places. [2024-06-21 19:11:51,785 INFO L495 AbstractCegarLoop]: Abstraction has has 589 places, 426 transitions, 5392 flow [2024-06-21 19:11:51,785 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) [2024-06-21 19:11:51,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:11:51,786 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:11:51,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2024-06-21 19:11:51,786 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)] === [2024-06-21 19:11:51,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:11:51,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1107125811, now seen corresponding path program 12 times [2024-06-21 19:11:51,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:11:51,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029002968] [2024-06-21 19:11:51,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:11:51,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:11:51,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:11:53,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:11:53,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:11:53,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029002968] [2024-06-21 19:11:53,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029002968] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:11:53,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:11:53,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:11:53,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134156113] [2024-06-21 19:11:53,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:11:53,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:11:53,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:11:53,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:11:53,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:11:53,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:11:53,177 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) [2024-06-21 19:11:53,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:11:53,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:11:53,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:11:53,732 INFO L124 PetriNetUnfolderBase]: 1048/2021 cut-off events. [2024-06-21 19:11:53,732 INFO L125 PetriNetUnfolderBase]: For 405576/405576 co-relation queries the response was YES. [2024-06-21 19:11:53,758 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. [2024-06-21 19:11:53,764 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 318 selfloop transitions, 121 changer transitions 0/441 dead transitions. [2024-06-21 19:11:53,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 599 places, 441 transitions, 6360 flow [2024-06-21 19:11:53,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:11:53,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:11:53,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-21 19:11:53,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-21 19:11:53,765 INFO L175 Difference]: Start difference. First operand has 589 places, 426 transitions, 5392 flow. Second operand 11 states and 132 transitions. [2024-06-21 19:11:53,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 599 places, 441 transitions, 6360 flow [2024-06-21 19:11:55,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 589 places, 441 transitions, 5923 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-21 19:11:55,657 INFO L231 Difference]: Finished difference. Result has 590 places, 429 transitions, 5267 flow [2024-06-21 19:11:55,657 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} [2024-06-21 19:11:55,659 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 560 predicate places. [2024-06-21 19:11:55,659 INFO L495 AbstractCegarLoop]: Abstraction has has 590 places, 429 transitions, 5267 flow [2024-06-21 19:11:55,659 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) [2024-06-21 19:11:55,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:11:55,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:11:55,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2024-06-21 19:11:55,660 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)] === [2024-06-21 19:11:55,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:11:55,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1107135111, now seen corresponding path program 13 times [2024-06-21 19:11:55,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:11:55,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084155070] [2024-06-21 19:11:55,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:11:55,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:11:55,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:11:56,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:11:56,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:11:56,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084155070] [2024-06-21 19:11:56,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084155070] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:11:56,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:11:56,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:11:56,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610806414] [2024-06-21 19:11:56,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:11:56,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:11:56,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:11:56,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:11:56,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:11:57,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-21 19:11:57,075 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) [2024-06-21 19:11:57,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:11:57,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-21 19:11:57,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:11:57,666 INFO L124 PetriNetUnfolderBase]: 1075/2082 cut-off events. [2024-06-21 19:11:57,666 INFO L125 PetriNetUnfolderBase]: For 575236/575236 co-relation queries the response was YES. [2024-06-21 19:11:57,693 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. [2024-06-21 19:11:57,699 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 292 selfloop transitions, 146 changer transitions 7/448 dead transitions. [2024-06-21 19:11:57,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 600 places, 448 transitions, 6635 flow [2024-06-21 19:11:57,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:11:57,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:11:57,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 153 transitions. [2024-06-21 19:11:57,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44868035190615835 [2024-06-21 19:11:57,700 INFO L175 Difference]: Start difference. First operand has 590 places, 429 transitions, 5267 flow. Second operand 11 states and 153 transitions. [2024-06-21 19:11:57,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 600 places, 448 transitions, 6635 flow [2024-06-21 19:12:00,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 594 places, 448 transitions, 6418 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-21 19:12:00,375 INFO L231 Difference]: Finished difference. Result has 595 places, 426 transitions, 5297 flow [2024-06-21 19:12:00,376 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} [2024-06-21 19:12:00,376 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 565 predicate places. [2024-06-21 19:12:00,376 INFO L495 AbstractCegarLoop]: Abstraction has has 595 places, 426 transitions, 5297 flow [2024-06-21 19:12:00,376 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) [2024-06-21 19:12:00,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:12:00,376 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:12:00,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2024-06-21 19:12:00,377 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)] === [2024-06-21 19:12:00,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:12:00,377 INFO L85 PathProgramCache]: Analyzing trace with hash 700557998, now seen corresponding path program 1 times [2024-06-21 19:12:00,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:12:00,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393721536] [2024-06-21 19:12:00,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:12:00,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:12:00,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:12:01,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:12:01,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:12:01,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393721536] [2024-06-21 19:12:01,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393721536] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:12:01,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:12:01,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:12:01,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973247788] [2024-06-21 19:12:01,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:12:01,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:12:01,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:12:01,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:12:01,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:12:01,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:12:01,742 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) [2024-06-21 19:12:01,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:12:01,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:12:01,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:12:02,346 INFO L124 PetriNetUnfolderBase]: 1065/2064 cut-off events. [2024-06-21 19:12:02,346 INFO L125 PetriNetUnfolderBase]: For 559611/559611 co-relation queries the response was YES. [2024-06-21 19:12:02,374 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. [2024-06-21 19:12:02,379 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 388 selfloop transitions, 13 changer transitions 43/446 dead transitions. [2024-06-21 19:12:02,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 602 places, 446 transitions, 6247 flow [2024-06-21 19:12:02,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:12:02,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:12:02,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-21 19:12:02,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36451612903225805 [2024-06-21 19:12:02,380 INFO L175 Difference]: Start difference. First operand has 595 places, 426 transitions, 5297 flow. Second operand 10 states and 113 transitions. [2024-06-21 19:12:02,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 602 places, 446 transitions, 6247 flow [2024-06-21 19:12:04,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 586 places, 446 transitions, 5657 flow, removed 7 selfloop flow, removed 16 redundant places. [2024-06-21 19:12:04,941 INFO L231 Difference]: Finished difference. Result has 587 places, 399 transitions, 4464 flow [2024-06-21 19:12:04,941 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} [2024-06-21 19:12:04,941 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 557 predicate places. [2024-06-21 19:12:04,941 INFO L495 AbstractCegarLoop]: Abstraction has has 587 places, 399 transitions, 4464 flow [2024-06-21 19:12:04,942 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) [2024-06-21 19:12:04,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:12:04,942 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:12:04,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2024-06-21 19:12:04,942 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)] === [2024-06-21 19:12:04,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:12:04,943 INFO L85 PathProgramCache]: Analyzing trace with hash -327008440, now seen corresponding path program 2 times [2024-06-21 19:12:04,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:12:04,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375871715] [2024-06-21 19:12:04,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:12:04,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:12:04,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:12:06,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:12:06,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:12:06,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375871715] [2024-06-21 19:12:06,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375871715] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:12:06,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:12:06,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:12:06,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082129131] [2024-06-21 19:12:06,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:12:06,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:12:06,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:12:06,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:12:06,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:12:06,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:12:06,504 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) [2024-06-21 19:12:06,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:12:06,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:12:06,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:12:07,086 INFO L124 PetriNetUnfolderBase]: 960/1859 cut-off events. [2024-06-21 19:12:07,087 INFO L125 PetriNetUnfolderBase]: For 517424/517424 co-relation queries the response was YES. [2024-06-21 19:12:07,113 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. [2024-06-21 19:12:07,118 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 338 selfloop transitions, 49 changer transitions 27/416 dead transitions. [2024-06-21 19:12:07,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 571 places, 416 transitions, 5346 flow [2024-06-21 19:12:07,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:12:07,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:12:07,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-21 19:12:07,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3741935483870968 [2024-06-21 19:12:07,119 INFO L175 Difference]: Start difference. First operand has 587 places, 399 transitions, 4464 flow. Second operand 10 states and 116 transitions. [2024-06-21 19:12:07,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 571 places, 416 transitions, 5346 flow [2024-06-21 19:12:09,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 553 places, 416 transitions, 5248 flow, removed 11 selfloop flow, removed 18 redundant places. [2024-06-21 19:12:09,416 INFO L231 Difference]: Finished difference. Result has 554 places, 382 transitions, 4297 flow [2024-06-21 19:12:09,416 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} [2024-06-21 19:12:09,417 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 524 predicate places. [2024-06-21 19:12:09,417 INFO L495 AbstractCegarLoop]: Abstraction has has 554 places, 382 transitions, 4297 flow [2024-06-21 19:12:09,417 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) [2024-06-21 19:12:09,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:12:09,417 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:12:09,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2024-06-21 19:12:09,417 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)] === [2024-06-21 19:12:09,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:12:09,417 INFO L85 PathProgramCache]: Analyzing trace with hash -211544290, now seen corresponding path program 3 times [2024-06-21 19:12:09,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:12:09,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908036539] [2024-06-21 19:12:09,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:12:09,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:12:09,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:12:11,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:12:11,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:12:11,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908036539] [2024-06-21 19:12:11,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908036539] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:12:11,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:12:11,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 19:12:11,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575395760] [2024-06-21 19:12:11,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:12:11,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 19:12:11,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:12:11,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 19:12:11,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-21 19:12:11,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:12:11,271 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) [2024-06-21 19:12:11,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:12:11,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:12:11,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:12:11,922 INFO L124 PetriNetUnfolderBase]: 910/1773 cut-off events. [2024-06-21 19:12:11,922 INFO L125 PetriNetUnfolderBase]: For 468786/468786 co-relation queries the response was YES. [2024-06-21 19:12:11,943 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. [2024-06-21 19:12:11,948 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 331 selfloop transitions, 62 changer transitions 9/404 dead transitions. [2024-06-21 19:12:11,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 552 places, 404 transitions, 5204 flow [2024-06-21 19:12:11,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:12:11,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:12:11,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 121 transitions. [2024-06-21 19:12:11,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32526881720430106 [2024-06-21 19:12:11,950 INFO L175 Difference]: Start difference. First operand has 554 places, 382 transitions, 4297 flow. Second operand 12 states and 121 transitions. [2024-06-21 19:12:11,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 552 places, 404 transitions, 5204 flow [2024-06-21 19:12:13,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 537 places, 404 transitions, 5049 flow, removed 6 selfloop flow, removed 15 redundant places. [2024-06-21 19:12:13,866 INFO L231 Difference]: Finished difference. Result has 540 places, 383 transitions, 4290 flow [2024-06-21 19:12:13,866 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} [2024-06-21 19:12:13,866 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 510 predicate places. [2024-06-21 19:12:13,866 INFO L495 AbstractCegarLoop]: Abstraction has has 540 places, 383 transitions, 4290 flow [2024-06-21 19:12:13,866 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) [2024-06-21 19:12:13,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:12:13,867 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:12:13,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2024-06-21 19:12:13,867 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)] === [2024-06-21 19:12:13,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:12:13,867 INFO L85 PathProgramCache]: Analyzing trace with hash -211717270, now seen corresponding path program 4 times [2024-06-21 19:12:13,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:12:13,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60774930] [2024-06-21 19:12:13,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:12:13,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:12:13,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:12:15,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:12:15,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:12:15,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60774930] [2024-06-21 19:12:15,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60774930] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:12:15,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:12:15,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:12:15,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446588753] [2024-06-21 19:12:15,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:12:15,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:12:15,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:12:15,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:12:15,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:12:15,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:12:15,593 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) [2024-06-21 19:12:15,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:12:15,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:12:15,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:12:16,197 INFO L124 PetriNetUnfolderBase]: 907/1768 cut-off events. [2024-06-21 19:12:16,197 INFO L125 PetriNetUnfolderBase]: For 445201/445201 co-relation queries the response was YES. [2024-06-21 19:12:16,218 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. [2024-06-21 19:12:16,223 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 337 selfloop transitions, 52 changer transitions 12/403 dead transitions. [2024-06-21 19:12:16,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 548 places, 403 transitions, 5163 flow [2024-06-21 19:12:16,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:12:16,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:12:16,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-21 19:12:16,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33724340175953077 [2024-06-21 19:12:16,224 INFO L175 Difference]: Start difference. First operand has 540 places, 383 transitions, 4290 flow. Second operand 11 states and 115 transitions. [2024-06-21 19:12:16,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 548 places, 403 transitions, 5163 flow [2024-06-21 19:12:18,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 537 places, 403 transitions, 5034 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-21 19:12:18,134 INFO L231 Difference]: Finished difference. Result has 539 places, 380 transitions, 4224 flow [2024-06-21 19:12:18,134 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} [2024-06-21 19:12:18,135 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 509 predicate places. [2024-06-21 19:12:18,135 INFO L495 AbstractCegarLoop]: Abstraction has has 539 places, 380 transitions, 4224 flow [2024-06-21 19:12:18,136 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) [2024-06-21 19:12:18,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:12:18,136 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:12:18,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2024-06-21 19:12:18,137 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)] === [2024-06-21 19:12:18,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:12:18,138 INFO L85 PathProgramCache]: Analyzing trace with hash -216185920, now seen corresponding path program 5 times [2024-06-21 19:12:18,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:12:18,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967698421] [2024-06-21 19:12:18,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:12:18,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:12:18,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:12:19,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:12:19,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:12:19,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967698421] [2024-06-21 19:12:19,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967698421] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:12:19,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:12:19,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:12:19,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647164524] [2024-06-21 19:12:19,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:12:19,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:12:19,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:12:19,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:12:19,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:12:19,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:12:19,712 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) [2024-06-21 19:12:19,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:12:19,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:12:19,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:12:20,276 INFO L124 PetriNetUnfolderBase]: 896/1747 cut-off events. [2024-06-21 19:12:20,277 INFO L125 PetriNetUnfolderBase]: For 445297/445297 co-relation queries the response was YES. [2024-06-21 19:12:20,296 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. [2024-06-21 19:12:20,301 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 315 selfloop transitions, 54 changer transitions 25/396 dead transitions. [2024-06-21 19:12:20,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 545 places, 396 transitions, 5064 flow [2024-06-21 19:12:20,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:12:20,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:12:20,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-21 19:12:20,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-21 19:12:20,302 INFO L175 Difference]: Start difference. First operand has 539 places, 380 transitions, 4224 flow. Second operand 10 states and 105 transitions. [2024-06-21 19:12:20,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 545 places, 396 transitions, 5064 flow [2024-06-21 19:12:22,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 534 places, 396 transitions, 4913 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-21 19:12:22,162 INFO L231 Difference]: Finished difference. Result has 535 places, 363 transitions, 3970 flow [2024-06-21 19:12:22,162 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} [2024-06-21 19:12:22,163 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 505 predicate places. [2024-06-21 19:12:22,163 INFO L495 AbstractCegarLoop]: Abstraction has has 535 places, 363 transitions, 3970 flow [2024-06-21 19:12:22,163 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) [2024-06-21 19:12:22,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:12:22,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:12:22,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2024-06-21 19:12:22,163 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)] === [2024-06-21 19:12:22,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:12:22,164 INFO L85 PathProgramCache]: Analyzing trace with hash 642021652, now seen corresponding path program 6 times [2024-06-21 19:12:22,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:12:22,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251192516] [2024-06-21 19:12:22,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:12:22,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:12:22,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:12:23,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:12:23,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:12:23,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251192516] [2024-06-21 19:12:23,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251192516] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:12:23,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:12:23,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:12:23,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575042010] [2024-06-21 19:12:23,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:12:23,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:12:23,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:12:23,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:12:23,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:12:23,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:12:23,763 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) [2024-06-21 19:12:23,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:12:23,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:12:23,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:12:24,264 INFO L124 PetriNetUnfolderBase]: 849/1654 cut-off events. [2024-06-21 19:12:24,264 INFO L125 PetriNetUnfolderBase]: For 439155/439155 co-relation queries the response was YES. [2024-06-21 19:12:24,283 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. [2024-06-21 19:12:24,287 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 300 selfloop transitions, 63 changer transitions 13/378 dead transitions. [2024-06-21 19:12:24,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 536 places, 378 transitions, 4772 flow [2024-06-21 19:12:24,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:12:24,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:12:24,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-21 19:12:24,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3519061583577713 [2024-06-21 19:12:24,289 INFO L175 Difference]: Start difference. First operand has 535 places, 363 transitions, 3970 flow. Second operand 11 states and 120 transitions. [2024-06-21 19:12:24,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 536 places, 378 transitions, 4772 flow [2024-06-21 19:12:26,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 508 places, 378 transitions, 4515 flow, removed 9 selfloop flow, removed 28 redundant places. [2024-06-21 19:12:26,026 INFO L231 Difference]: Finished difference. Result has 509 places, 356 transitions, 3772 flow [2024-06-21 19:12:26,026 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} [2024-06-21 19:12:26,027 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 479 predicate places. [2024-06-21 19:12:26,027 INFO L495 AbstractCegarLoop]: Abstraction has has 509 places, 356 transitions, 3772 flow [2024-06-21 19:12:26,027 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) [2024-06-21 19:12:26,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:12:26,027 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:12:26,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2024-06-21 19:12:26,027 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)] === [2024-06-21 19:12:26,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:12:26,028 INFO L85 PathProgramCache]: Analyzing trace with hash 2012544296, now seen corresponding path program 7 times [2024-06-21 19:12:26,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:12:26,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641751711] [2024-06-21 19:12:26,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:12:26,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:12:26,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:12:27,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:12:27,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:12:27,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641751711] [2024-06-21 19:12:27,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641751711] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:12:27,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:12:27,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:12:27,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405493147] [2024-06-21 19:12:27,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:12:27,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:12:27,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:12:27,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:12:27,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:12:27,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:12:27,806 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) [2024-06-21 19:12:27,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:12:27,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:12:27,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:12:28,292 INFO L124 PetriNetUnfolderBase]: 827/1616 cut-off events. [2024-06-21 19:12:28,293 INFO L125 PetriNetUnfolderBase]: For 399424/399424 co-relation queries the response was YES. [2024-06-21 19:12:28,311 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. [2024-06-21 19:12:28,316 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 282 selfloop transitions, 63 changer transitions 23/370 dead transitions. [2024-06-21 19:12:28,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 513 places, 370 transitions, 4556 flow [2024-06-21 19:12:28,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:12:28,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:12:28,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-21 19:12:28,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489736070381232 [2024-06-21 19:12:28,318 INFO L175 Difference]: Start difference. First operand has 509 places, 356 transitions, 3772 flow. Second operand 11 states and 119 transitions. [2024-06-21 19:12:28,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 513 places, 370 transitions, 4556 flow [2024-06-21 19:12:29,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 499 places, 370 transitions, 4404 flow, removed 5 selfloop flow, removed 14 redundant places. [2024-06-21 19:12:29,807 INFO L231 Difference]: Finished difference. Result has 500 places, 339 transitions, 3512 flow [2024-06-21 19:12:29,807 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} [2024-06-21 19:12:29,807 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 470 predicate places. [2024-06-21 19:12:29,807 INFO L495 AbstractCegarLoop]: Abstraction has has 500 places, 339 transitions, 3512 flow [2024-06-21 19:12:29,807 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) [2024-06-21 19:12:29,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:12:29,807 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:12:29,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2024-06-21 19:12:29,808 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)] === [2024-06-21 19:12:29,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:12:29,808 INFO L85 PathProgramCache]: Analyzing trace with hash -499664758, now seen corresponding path program 8 times [2024-06-21 19:12:29,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:12:29,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189709353] [2024-06-21 19:12:29,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:12:29,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:12:29,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:12:31,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:12:31,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:12:31,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189709353] [2024-06-21 19:12:31,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189709353] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:12:31,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:12:31,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 19:12:31,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369344099] [2024-06-21 19:12:31,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:12:31,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 19:12:31,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:12:31,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 19:12:31,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-21 19:12:31,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:12:31,485 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) [2024-06-21 19:12:31,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:12:31,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:12:31,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:12:31,912 INFO L124 PetriNetUnfolderBase]: 801/1557 cut-off events. [2024-06-21 19:12:31,912 INFO L125 PetriNetUnfolderBase]: For 382881/382881 co-relation queries the response was YES. [2024-06-21 19:12:31,928 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. [2024-06-21 19:12:31,932 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 274 selfloop transitions, 48 changer transitions 32/356 dead transitions. [2024-06-21 19:12:31,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 505 places, 356 transitions, 4274 flow [2024-06-21 19:12:31,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:12:31,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:12:31,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-21 19:12:31,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35777126099706746 [2024-06-21 19:12:31,933 INFO L175 Difference]: Start difference. First operand has 500 places, 339 transitions, 3512 flow. Second operand 11 states and 122 transitions. [2024-06-21 19:12:31,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 505 places, 356 transitions, 4274 flow [2024-06-21 19:12:33,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 356 transitions, 3835 flow, removed 18 selfloop flow, removed 49 redundant places. [2024-06-21 19:12:33,383 INFO L231 Difference]: Finished difference. Result has 457 places, 317 transitions, 3043 flow [2024-06-21 19:12:33,383 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} [2024-06-21 19:12:33,384 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 427 predicate places. [2024-06-21 19:12:33,384 INFO L495 AbstractCegarLoop]: Abstraction has has 457 places, 317 transitions, 3043 flow [2024-06-21 19:12:33,384 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) [2024-06-21 19:12:33,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:12:33,384 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:12:33,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232 [2024-06-21 19:12:33,384 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)] === [2024-06-21 19:12:33,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:12:33,385 INFO L85 PathProgramCache]: Analyzing trace with hash -388842238, now seen corresponding path program 9 times [2024-06-21 19:12:33,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:12:33,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762172262] [2024-06-21 19:12:33,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:12:33,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:12:33,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:12:34,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:12:34,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:12:34,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762172262] [2024-06-21 19:12:34,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762172262] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:12:34,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:12:34,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 19:12:34,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154060809] [2024-06-21 19:12:34,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:12:34,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 19:12:34,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:12:34,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 19:12:34,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-21 19:12:35,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:12:35,082 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) [2024-06-21 19:12:35,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:12:35,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:12:35,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:12:35,484 INFO L124 PetriNetUnfolderBase]: 723/1411 cut-off events. [2024-06-21 19:12:35,484 INFO L125 PetriNetUnfolderBase]: For 345816/345816 co-relation queries the response was YES. [2024-06-21 19:12:35,498 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. [2024-06-21 19:12:35,502 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 291 selfloop transitions, 25 changer transitions 18/336 dead transitions. [2024-06-21 19:12:35,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 336 transitions, 3771 flow [2024-06-21 19:12:35,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:12:35,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:12:35,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-21 19:12:35,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-21 19:12:35,503 INFO L175 Difference]: Start difference. First operand has 457 places, 317 transitions, 3043 flow. Second operand 11 states and 124 transitions. [2024-06-21 19:12:35,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 451 places, 336 transitions, 3771 flow [2024-06-21 19:12:36,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 336 transitions, 3598 flow, removed 11 selfloop flow, removed 25 redundant places. [2024-06-21 19:12:36,683 INFO L231 Difference]: Finished difference. Result has 427 places, 307 transitions, 2865 flow [2024-06-21 19:12:36,683 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} [2024-06-21 19:12:36,683 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 397 predicate places. [2024-06-21 19:12:36,684 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 307 transitions, 2865 flow [2024-06-21 19:12:36,684 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) [2024-06-21 19:12:36,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:12:36,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:12:36,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233 [2024-06-21 19:12:36,684 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)] === [2024-06-21 19:12:36,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:12:36,685 INFO L85 PathProgramCache]: Analyzing trace with hash -941979008, now seen corresponding path program 10 times [2024-06-21 19:12:36,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:12:36,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081674908] [2024-06-21 19:12:36,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:12:36,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:12:36,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:12:38,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:12:38,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:12:38,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081674908] [2024-06-21 19:12:38,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081674908] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:12:38,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:12:38,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:12:38,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547603274] [2024-06-21 19:12:38,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:12:38,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:12:38,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:12:38,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:12:38,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:12:38,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-21 19:12:38,234 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) [2024-06-21 19:12:38,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:12:38,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-21 19:12:38,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:12:38,572 INFO L124 PetriNetUnfolderBase]: 689/1349 cut-off events. [2024-06-21 19:12:38,572 INFO L125 PetriNetUnfolderBase]: For 308785/308785 co-relation queries the response was YES. [2024-06-21 19:12:38,585 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. [2024-06-21 19:12:38,623 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 279 selfloop transitions, 34 changer transitions 8/324 dead transitions. [2024-06-21 19:12:38,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 324 transitions, 3563 flow [2024-06-21 19:12:38,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:12:38,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:12:38,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-21 19:12:38,624 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3841642228739003 [2024-06-21 19:12:38,624 INFO L175 Difference]: Start difference. First operand has 427 places, 307 transitions, 2865 flow. Second operand 11 states and 131 transitions. [2024-06-21 19:12:38,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 324 transitions, 3563 flow [2024-06-21 19:12:39,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 324 transitions, 3497 flow, removed 8 selfloop flow, removed 15 redundant places. [2024-06-21 19:12:39,514 INFO L231 Difference]: Finished difference. Result has 413 places, 305 transitions, 2857 flow [2024-06-21 19:12:39,514 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} [2024-06-21 19:12:39,515 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 383 predicate places. [2024-06-21 19:12:39,515 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 305 transitions, 2857 flow [2024-06-21 19:12:39,515 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) [2024-06-21 19:12:39,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:12:39,515 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:12:39,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234 [2024-06-21 19:12:39,515 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)] === [2024-06-21 19:12:39,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:12:39,516 INFO L85 PathProgramCache]: Analyzing trace with hash -941782530, now seen corresponding path program 1 times [2024-06-21 19:12:39,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:12:39,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421329036] [2024-06-21 19:12:39,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:12:39,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:12:39,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:12:40,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:12:40,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:12:40,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421329036] [2024-06-21 19:12:40,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421329036] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:12:40,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:12:40,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:12:40,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956009682] [2024-06-21 19:12:40,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:12:40,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:12:40,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:12:40,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:12:40,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:12:41,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:12:41,142 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) [2024-06-21 19:12:41,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:12:41,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:12:41,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:12:41,537 INFO L124 PetriNetUnfolderBase]: 687/1348 cut-off events. [2024-06-21 19:12:41,537 INFO L125 PetriNetUnfolderBase]: For 291980/291980 co-relation queries the response was YES. [2024-06-21 19:12:41,547 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. [2024-06-21 19:12:41,550 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 228 selfloop transitions, 69 changer transitions 20/319 dead transitions. [2024-06-21 19:12:41,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 319 transitions, 3577 flow [2024-06-21 19:12:41,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:12:41,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:12:41,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-21 19:12:41,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35777126099706746 [2024-06-21 19:12:41,551 INFO L175 Difference]: Start difference. First operand has 413 places, 305 transitions, 2857 flow. Second operand 11 states and 122 transitions. [2024-06-21 19:12:41,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 319 transitions, 3577 flow [2024-06-21 19:12:42,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 319 transitions, 3505 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-21 19:12:42,266 INFO L231 Difference]: Finished difference. Result has 411 places, 291 transitions, 2804 flow [2024-06-21 19:12:42,266 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} [2024-06-21 19:12:42,267 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 381 predicate places. [2024-06-21 19:12:42,267 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 291 transitions, 2804 flow [2024-06-21 19:12:42,267 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) [2024-06-21 19:12:42,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:12:42,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:12:42,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable235 [2024-06-21 19:12:42,267 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)] === [2024-06-21 19:12:42,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:12:42,268 INFO L85 PathProgramCache]: Analyzing trace with hash -384373588, now seen corresponding path program 11 times [2024-06-21 19:12:42,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:12:42,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358024790] [2024-06-21 19:12:42,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:12:42,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:12:42,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:12:44,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:12:44,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:12:44,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358024790] [2024-06-21 19:12:44,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358024790] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:12:44,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:12:44,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 19:12:44,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667329415] [2024-06-21 19:12:44,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:12:44,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 19:12:44,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:12:44,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 19:12:44,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-06-21 19:12:44,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:12:44,244 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) [2024-06-21 19:12:44,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:12:44,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:12:44,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:12:44,765 INFO L124 PetriNetUnfolderBase]: 658/1308 cut-off events. [2024-06-21 19:12:44,765 INFO L125 PetriNetUnfolderBase]: For 273574/273574 co-relation queries the response was YES. [2024-06-21 19:12:44,777 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. [2024-06-21 19:12:44,780 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 251 selfloop transitions, 7 changer transitions 49/309 dead transitions. [2024-06-21 19:12:44,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 309 transitions, 3476 flow [2024-06-21 19:12:44,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:12:44,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:12:44,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-21 19:12:44,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33602150537634407 [2024-06-21 19:12:44,781 INFO L175 Difference]: Start difference. First operand has 411 places, 291 transitions, 2804 flow. Second operand 12 states and 125 transitions. [2024-06-21 19:12:44,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 309 transitions, 3476 flow [2024-06-21 19:12:45,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 309 transitions, 3284 flow, removed 8 selfloop flow, removed 13 redundant places. [2024-06-21 19:12:45,623 INFO L231 Difference]: Finished difference. Result has 405 places, 256 transitions, 2311 flow [2024-06-21 19:12:45,623 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} [2024-06-21 19:12:45,624 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 375 predicate places. [2024-06-21 19:12:45,624 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 256 transitions, 2311 flow [2024-06-21 19:12:45,624 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) [2024-06-21 19:12:45,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:12:45,624 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:12:45,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236 [2024-06-21 19:12:45,624 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)] === [2024-06-21 19:12:45,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:12:45,625 INFO L85 PathProgramCache]: Analyzing trace with hash 735602748, now seen corresponding path program 12 times [2024-06-21 19:12:45,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:12:45,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050377665] [2024-06-21 19:12:45,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:12:45,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:12:45,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:12:47,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:12:47,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:12:47,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050377665] [2024-06-21 19:12:47,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050377665] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:12:47,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:12:47,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:12:47,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113656698] [2024-06-21 19:12:47,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:12:47,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:12:47,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:12:47,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:12:47,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:12:47,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:12:47,267 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) [2024-06-21 19:12:47,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:12:47,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:12:47,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:12:47,697 INFO L124 PetriNetUnfolderBase]: 601/1187 cut-off events. [2024-06-21 19:12:47,698 INFO L125 PetriNetUnfolderBase]: For 264844/264844 co-relation queries the response was YES. [2024-06-21 19:12:47,708 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. [2024-06-21 19:12:47,711 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 214 selfloop transitions, 34 changer transitions 21/271 dead transitions. [2024-06-21 19:12:47,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 271 transitions, 2897 flow [2024-06-21 19:12:47,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:12:47,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:12:47,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-21 19:12:47,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36451612903225805 [2024-06-21 19:12:47,712 INFO L175 Difference]: Start difference. First operand has 405 places, 256 transitions, 2311 flow. Second operand 10 states and 113 transitions. [2024-06-21 19:12:47,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 271 transitions, 2897 flow [2024-06-21 19:12:48,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 271 transitions, 2836 flow, removed 19 selfloop flow, removed 20 redundant places. [2024-06-21 19:12:48,523 INFO L231 Difference]: Finished difference. Result has 362 places, 241 transitions, 2227 flow [2024-06-21 19:12:48,524 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} [2024-06-21 19:12:48,524 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 332 predicate places. [2024-06-21 19:12:48,524 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 241 transitions, 2227 flow [2024-06-21 19:12:48,524 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) [2024-06-21 19:12:48,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:12:48,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:12:48,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237 [2024-06-21 19:12:48,525 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)] === [2024-06-21 19:12:48,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:12:48,525 INFO L85 PathProgramCache]: Analyzing trace with hash 812533154, now seen corresponding path program 13 times [2024-06-21 19:12:48,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:12:48,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160991451] [2024-06-21 19:12:48,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:12:48,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:12:48,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:12:50,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:12:50,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:12:50,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160991451] [2024-06-21 19:12:50,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160991451] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:12:50,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:12:50,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 19:12:50,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383208566] [2024-06-21 19:12:50,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:12:50,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 19:12:50,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:12:50,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 19:12:50,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-21 19:12:50,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:12:50,237 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) [2024-06-21 19:12:50,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:12:50,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:12:50,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:12:50,626 INFO L124 PetriNetUnfolderBase]: 553/1103 cut-off events. [2024-06-21 19:12:50,626 INFO L125 PetriNetUnfolderBase]: For 216454/216454 co-relation queries the response was YES. [2024-06-21 19:12:50,635 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. [2024-06-21 19:12:50,638 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 212 selfloop transitions, 21 changer transitions 22/257 dead transitions. [2024-06-21 19:12:50,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 257 transitions, 2787 flow [2024-06-21 19:12:50,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:12:50,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:12:50,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 107 transitions. [2024-06-21 19:12:50,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31378299120234604 [2024-06-21 19:12:50,639 INFO L175 Difference]: Start difference. First operand has 362 places, 241 transitions, 2227 flow. Second operand 11 states and 107 transitions. [2024-06-21 19:12:50,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 257 transitions, 2787 flow [2024-06-21 19:12:51,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 257 transitions, 2691 flow, removed 10 selfloop flow, removed 19 redundant places. [2024-06-21 19:12:51,249 INFO L231 Difference]: Finished difference. Result has 343 places, 227 transitions, 2091 flow [2024-06-21 19:12:51,249 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} [2024-06-21 19:12:51,250 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 313 predicate places. [2024-06-21 19:12:51,250 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 227 transitions, 2091 flow [2024-06-21 19:12:51,250 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) [2024-06-21 19:12:51,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:12:51,250 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:12:51,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238 [2024-06-21 19:12:51,250 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)] === [2024-06-21 19:12:51,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:12:51,251 INFO L85 PathProgramCache]: Analyzing trace with hash 817174784, now seen corresponding path program 14 times [2024-06-21 19:12:51,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:12:51,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904265549] [2024-06-21 19:12:51,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:12:51,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:12:51,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:12:52,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:12:52,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:12:52,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904265549] [2024-06-21 19:12:52,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904265549] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:12:52,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:12:52,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 19:12:52,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49387136] [2024-06-21 19:12:52,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:12:52,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 19:12:52,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:12:52,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 19:12:52,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-21 19:12:53,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:12:53,084 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) [2024-06-21 19:12:53,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:12:53,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:12:53,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:12:53,534 INFO L124 PetriNetUnfolderBase]: 505/1015 cut-off events. [2024-06-21 19:12:53,535 INFO L125 PetriNetUnfolderBase]: For 181476/181476 co-relation queries the response was YES. [2024-06-21 19:12:53,542 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. [2024-06-21 19:12:53,545 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 157 selfloop transitions, 3 changer transitions 79/241 dead transitions. [2024-06-21 19:12:53,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 241 transitions, 2615 flow [2024-06-21 19:12:53,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:12:53,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:12:53,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-21 19:12:53,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34310850439882695 [2024-06-21 19:12:53,546 INFO L175 Difference]: Start difference. First operand has 343 places, 227 transitions, 2091 flow. Second operand 11 states and 117 transitions. [2024-06-21 19:12:53,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 241 transitions, 2615 flow [2024-06-21 19:12:53,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 241 transitions, 2555 flow, removed 9 selfloop flow, removed 16 redundant places. [2024-06-21 19:12:53,992 INFO L231 Difference]: Finished difference. Result has 325 places, 161 transitions, 1436 flow [2024-06-21 19:12:53,993 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} [2024-06-21 19:12:53,993 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 295 predicate places. [2024-06-21 19:12:53,993 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 161 transitions, 1436 flow [2024-06-21 19:12:53,993 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) [2024-06-21 19:12:53,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:12:53,993 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:12:53,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable239 [2024-06-21 19:12:53,993 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)] === [2024-06-21 19:12:53,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:12:53,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1964974444, now seen corresponding path program 15 times [2024-06-21 19:12:53,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:12:53,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255779198] [2024-06-21 19:12:53,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:12:53,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:12:54,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:12:55,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:12:55,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:12:55,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255779198] [2024-06-21 19:12:55,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255779198] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:12:55,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:12:55,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:12:55,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668369938] [2024-06-21 19:12:55,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:12:55,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:12:55,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:12:55,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:12:55,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:12:55,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:12:55,844 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) [2024-06-21 19:12:55,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:12:55,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:12:55,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:12:56,230 INFO L124 PetriNetUnfolderBase]: 402/799 cut-off events. [2024-06-21 19:12:56,230 INFO L125 PetriNetUnfolderBase]: For 152888/152888 co-relation queries the response was YES. [2024-06-21 19:12:56,236 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. [2024-06-21 19:12:56,238 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 151 selfloop transitions, 12 changer transitions 8/173 dead transitions. [2024-06-21 19:12:56,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 173 transitions, 1818 flow [2024-06-21 19:12:56,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:12:56,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:12:56,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 99 transitions. [2024-06-21 19:12:56,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2903225806451613 [2024-06-21 19:12:56,239 INFO L175 Difference]: Start difference. First operand has 325 places, 161 transitions, 1436 flow. Second operand 11 states and 99 transitions. [2024-06-21 19:12:56,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 173 transitions, 1818 flow [2024-06-21 19:12:56,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 173 transitions, 1754 flow, removed 25 selfloop flow, removed 30 redundant places. [2024-06-21 19:12:56,478 INFO L231 Difference]: Finished difference. Result has 241 places, 159 transitions, 1387 flow [2024-06-21 19:12:56,478 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} [2024-06-21 19:12:56,478 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 211 predicate places. [2024-06-21 19:12:56,479 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 159 transitions, 1387 flow [2024-06-21 19:12:56,479 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) [2024-06-21 19:12:56,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:12:56,479 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:12:56,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240 [2024-06-21 19:12:56,479 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)] === [2024-06-21 19:12:56,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:12:56,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1859133134, now seen corresponding path program 16 times [2024-06-21 19:12:56,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:12:56,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957783200] [2024-06-21 19:12:56,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:12:56,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:12:56,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:12:58,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:12:58,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:12:58,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957783200] [2024-06-21 19:12:58,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957783200] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:12:58,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:12:58,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:12:58,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398164313] [2024-06-21 19:12:58,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:12:58,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:12:58,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:12:58,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:12:58,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:12:58,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:12:58,473 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) [2024-06-21 19:12:58,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:12:58,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:12:58,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:12:58,843 INFO L124 PetriNetUnfolderBase]: 393/784 cut-off events. [2024-06-21 19:12:58,844 INFO L125 PetriNetUnfolderBase]: For 88184/88184 co-relation queries the response was YES. [2024-06-21 19:12:58,848 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. [2024-06-21 19:12:58,849 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 145 selfloop transitions, 9 changer transitions 15/171 dead transitions. [2024-06-21 19:12:58,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 171 transitions, 1785 flow [2024-06-21 19:12:58,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:12:58,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:12:58,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 99 transitions. [2024-06-21 19:12:58,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2903225806451613 [2024-06-21 19:12:58,851 INFO L175 Difference]: Start difference. First operand has 241 places, 159 transitions, 1387 flow. Second operand 11 states and 99 transitions. [2024-06-21 19:12:58,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 171 transitions, 1785 flow [2024-06-21 19:12:59,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 171 transitions, 1757 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-21 19:12:59,016 INFO L231 Difference]: Finished difference. Result has 239 places, 152 transitions, 1342 flow [2024-06-21 19:12:59,016 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} [2024-06-21 19:12:59,016 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 209 predicate places. [2024-06-21 19:12:59,016 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 152 transitions, 1342 flow [2024-06-21 19:12:59,017 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) [2024-06-21 19:12:59,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:12:59,017 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:12:59,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241 [2024-06-21 19:12:59,017 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)] === [2024-06-21 19:12:59,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:12:59,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1691574070, now seen corresponding path program 17 times [2024-06-21 19:12:59,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:12:59,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659503371] [2024-06-21 19:12:59,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:12:59,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:12:59,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:13:00,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:13:00,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:13:00,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659503371] [2024-06-21 19:13:00,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659503371] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:13:00,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:13:00,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 19:13:00,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602572774] [2024-06-21 19:13:00,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:13:00,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 19:13:00,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:13:00,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 19:13:00,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-21 19:13:01,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:13:01,055 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) [2024-06-21 19:13:01,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:13:01,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:13:01,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:13:01,368 INFO L124 PetriNetUnfolderBase]: 380/757 cut-off events. [2024-06-21 19:13:01,369 INFO L125 PetriNetUnfolderBase]: For 80735/80735 co-relation queries the response was YES. [2024-06-21 19:13:01,373 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. [2024-06-21 19:13:01,375 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 104 selfloop transitions, 42 changer transitions 16/164 dead transitions. [2024-06-21 19:13:01,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 164 transitions, 1706 flow [2024-06-21 19:13:01,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:13:01,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:13:01,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-21 19:13:01,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36070381231671556 [2024-06-21 19:13:01,377 INFO L175 Difference]: Start difference. First operand has 239 places, 152 transitions, 1342 flow. Second operand 11 states and 123 transitions. [2024-06-21 19:13:01,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 164 transitions, 1706 flow [2024-06-21 19:13:01,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 164 transitions, 1672 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-21 19:13:01,526 INFO L231 Difference]: Finished difference. Result has 230 places, 142 transitions, 1315 flow [2024-06-21 19:13:01,526 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} [2024-06-21 19:13:01,526 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 200 predicate places. [2024-06-21 19:13:01,526 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 142 transitions, 1315 flow [2024-06-21 19:13:01,526 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) [2024-06-21 19:13:01,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:13:01,527 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:13:01,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242 [2024-06-21 19:13:01,527 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)] === [2024-06-21 19:13:01,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:13:01,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1627330306, now seen corresponding path program 2 times [2024-06-21 19:13:01,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:13:01,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434411113] [2024-06-21 19:13:01,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:13:01,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:13:01,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:13:03,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:13:03,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:13:03,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434411113] [2024-06-21 19:13:03,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434411113] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:13:03,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:13:03,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 19:13:03,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283837670] [2024-06-21 19:13:03,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:13:03,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 19:13:03,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:13:03,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 19:13:03,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2024-06-21 19:13:03,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:13:03,957 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) [2024-06-21 19:13:03,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:13:03,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:13:03,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:13:04,285 INFO L124 PetriNetUnfolderBase]: 376/753 cut-off events. [2024-06-21 19:13:04,285 INFO L125 PetriNetUnfolderBase]: For 87895/87895 co-relation queries the response was YES. [2024-06-21 19:13:04,288 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. [2024-06-21 19:13:04,289 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 102 selfloop transitions, 32 changer transitions 21/157 dead transitions. [2024-06-21 19:13:04,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 157 transitions, 1699 flow [2024-06-21 19:13:04,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:13:04,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:13:04,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-21 19:13:04,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-21 19:13:04,291 INFO L175 Difference]: Start difference. First operand has 230 places, 142 transitions, 1315 flow. Second operand 12 states and 132 transitions. [2024-06-21 19:13:04,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 157 transitions, 1699 flow [2024-06-21 19:13:04,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 157 transitions, 1599 flow, removed 6 selfloop flow, removed 15 redundant places. [2024-06-21 19:13:04,427 INFO L231 Difference]: Finished difference. Result has 220 places, 129 transitions, 1177 flow [2024-06-21 19:13:04,428 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} [2024-06-21 19:13:04,428 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 190 predicate places. [2024-06-21 19:13:04,428 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 129 transitions, 1177 flow [2024-06-21 19:13:04,428 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) [2024-06-21 19:13:04,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:13:04,428 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:13:04,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable243 [2024-06-21 19:13:04,428 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)] === [2024-06-21 19:13:04,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:13:04,429 INFO L85 PathProgramCache]: Analyzing trace with hash -38836944, now seen corresponding path program 3 times [2024-06-21 19:13:04,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:13:04,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919946288] [2024-06-21 19:13:04,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:13:04,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:13:04,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:13:06,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:13:06,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:13:06,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919946288] [2024-06-21 19:13:06,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919946288] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:13:06,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:13:06,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 19:13:06,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586961030] [2024-06-21 19:13:06,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:13:06,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 19:13:06,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:13:06,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 19:13:06,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-21 19:13:06,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:13:06,224 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) [2024-06-21 19:13:06,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:13:06,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:13:06,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:13:06,495 INFO L124 PetriNetUnfolderBase]: 315/634 cut-off events. [2024-06-21 19:13:06,495 INFO L125 PetriNetUnfolderBase]: For 52868/52868 co-relation queries the response was YES. [2024-06-21 19:13:06,498 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. [2024-06-21 19:13:06,499 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 90 selfloop transitions, 34 changer transitions 16/142 dead transitions. [2024-06-21 19:13:06,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 142 transitions, 1515 flow [2024-06-21 19:13:06,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:13:06,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:13:06,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-21 19:13:06,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36656891495601174 [2024-06-21 19:13:06,501 INFO L175 Difference]: Start difference. First operand has 220 places, 129 transitions, 1177 flow. Second operand 11 states and 125 transitions. [2024-06-21 19:13:06,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 142 transitions, 1515 flow [2024-06-21 19:13:06,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 142 transitions, 1390 flow, removed 6 selfloop flow, removed 18 redundant places. [2024-06-21 19:13:06,583 INFO L231 Difference]: Finished difference. Result has 207 places, 121 transitions, 1072 flow [2024-06-21 19:13:06,583 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} [2024-06-21 19:13:06,584 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 177 predicate places. [2024-06-21 19:13:06,584 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 121 transitions, 1072 flow [2024-06-21 19:13:06,584 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) [2024-06-21 19:13:06,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:13:06,584 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:13:06,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable244 [2024-06-21 19:13:06,584 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)] === [2024-06-21 19:13:06,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:13:06,585 INFO L85 PathProgramCache]: Analyzing trace with hash -275200412, now seen corresponding path program 18 times [2024-06-21 19:13:06,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:13:06,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579924841] [2024-06-21 19:13:06,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:13:06,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:13:06,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:13:08,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:13:08,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:13:08,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579924841] [2024-06-21 19:13:08,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579924841] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:13:08,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:13:08,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 19:13:08,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819236693] [2024-06-21 19:13:08,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:13:08,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 19:13:08,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:13:08,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 19:13:08,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-21 19:13:08,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:13:08,845 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) [2024-06-21 19:13:08,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:13:08,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:13:08,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:13:09,142 INFO L124 PetriNetUnfolderBase]: 297/600 cut-off events. [2024-06-21 19:13:09,143 INFO L125 PetriNetUnfolderBase]: For 44574/44574 co-relation queries the response was YES. [2024-06-21 19:13:09,146 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. [2024-06-21 19:13:09,147 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 84 selfloop transitions, 32 changer transitions 16/134 dead transitions. [2024-06-21 19:13:09,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 134 transitions, 1376 flow [2024-06-21 19:13:09,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:13:09,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:13:09,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-21 19:13:09,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3519061583577713 [2024-06-21 19:13:09,148 INFO L175 Difference]: Start difference. First operand has 207 places, 121 transitions, 1072 flow. Second operand 11 states and 120 transitions. [2024-06-21 19:13:09,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 134 transitions, 1376 flow [2024-06-21 19:13:09,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 134 transitions, 1286 flow, removed 11 selfloop flow, removed 11 redundant places. [2024-06-21 19:13:09,221 INFO L231 Difference]: Finished difference. Result has 196 places, 114 transitions, 989 flow [2024-06-21 19:13:09,222 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} [2024-06-21 19:13:09,222 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 166 predicate places. [2024-06-21 19:13:09,222 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 114 transitions, 989 flow [2024-06-21 19:13:09,222 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) [2024-06-21 19:13:09,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:13:09,222 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:13:09,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable245 [2024-06-21 19:13:09,222 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)] === [2024-06-21 19:13:09,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:13:09,223 INFO L85 PathProgramCache]: Analyzing trace with hash -707000108, now seen corresponding path program 19 times [2024-06-21 19:13:09,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:13:09,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911479439] [2024-06-21 19:13:09,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:13:09,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:13:09,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:13:10,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:13:10,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:13:10,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911479439] [2024-06-21 19:13:10,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911479439] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:13:10,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:13:10,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 19:13:10,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018431181] [2024-06-21 19:13:10,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:13:10,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 19:13:10,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:13:10,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 19:13:10,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2024-06-21 19:13:11,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:13:11,020 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) [2024-06-21 19:13:11,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:13:11,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:13:11,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:13:11,252 INFO L124 PetriNetUnfolderBase]: 283/570 cut-off events. [2024-06-21 19:13:11,253 INFO L125 PetriNetUnfolderBase]: For 39006/39006 co-relation queries the response was YES. [2024-06-21 19:13:11,255 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. [2024-06-21 19:13:11,257 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 84 selfloop transitions, 30 changer transitions 11/127 dead transitions. [2024-06-21 19:13:11,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 127 transitions, 1275 flow [2024-06-21 19:13:11,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:13:11,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:13:11,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-21 19:13:11,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-21 19:13:11,258 INFO L175 Difference]: Start difference. First operand has 196 places, 114 transitions, 989 flow. Second operand 12 states and 132 transitions. [2024-06-21 19:13:11,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 127 transitions, 1275 flow [2024-06-21 19:13:11,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 127 transitions, 1167 flow, removed 6 selfloop flow, removed 15 redundant places. [2024-06-21 19:13:11,347 INFO L231 Difference]: Finished difference. Result has 183 places, 110 transitions, 924 flow [2024-06-21 19:13:11,347 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} [2024-06-21 19:13:11,347 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 153 predicate places. [2024-06-21 19:13:11,347 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 110 transitions, 924 flow [2024-06-21 19:13:11,347 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) [2024-06-21 19:13:11,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:13:11,348 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:13:11,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable246 [2024-06-21 19:13:11,348 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)] === [2024-06-21 19:13:11,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:13:11,349 INFO L85 PathProgramCache]: Analyzing trace with hash -698710770, now seen corresponding path program 4 times [2024-06-21 19:13:11,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:13:11,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744032575] [2024-06-21 19:13:11,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:13:11,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:13:11,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:13:12,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:13:12,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:13:12,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744032575] [2024-06-21 19:13:12,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744032575] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:13:12,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:13:12,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 19:13:12,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786345661] [2024-06-21 19:13:12,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:13:12,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 19:13:12,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:13:12,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 19:13:12,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-21 19:13:13,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:13:13,115 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) [2024-06-21 19:13:13,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:13:13,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:13:13,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:13:13,365 INFO L124 PetriNetUnfolderBase]: 257/516 cut-off events. [2024-06-21 19:13:13,365 INFO L125 PetriNetUnfolderBase]: For 25290/25290 co-relation queries the response was YES. [2024-06-21 19:13:13,367 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. [2024-06-21 19:13:13,369 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 79 selfloop transitions, 27 changer transitions 15/123 dead transitions. [2024-06-21 19:13:13,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 123 transitions, 1216 flow [2024-06-21 19:13:13,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:13:13,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:13:13,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-21 19:13:13,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3724340175953079 [2024-06-21 19:13:13,370 INFO L175 Difference]: Start difference. First operand has 183 places, 110 transitions, 924 flow. Second operand 11 states and 127 transitions. [2024-06-21 19:13:13,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 123 transitions, 1216 flow [2024-06-21 19:13:13,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 123 transitions, 1150 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-21 19:13:13,412 INFO L231 Difference]: Finished difference. Result has 177 places, 102 transitions, 867 flow [2024-06-21 19:13:13,412 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} [2024-06-21 19:13:13,412 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 147 predicate places. [2024-06-21 19:13:13,413 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 102 transitions, 867 flow [2024-06-21 19:13:13,413 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) [2024-06-21 19:13:13,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:13:13,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:13:13,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable247 [2024-06-21 19:13:13,413 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)] === [2024-06-21 19:13:13,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:13:13,413 INFO L85 PathProgramCache]: Analyzing trace with hash -935074238, now seen corresponding path program 20 times [2024-06-21 19:13:13,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:13:13,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181180066] [2024-06-21 19:13:13,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:13:13,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:13:13,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:13:15,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:13:15,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:13:15,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181180066] [2024-06-21 19:13:15,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181180066] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:13:15,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:13:15,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 19:13:15,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325108886] [2024-06-21 19:13:15,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:13:15,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 19:13:15,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:13:15,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 19:13:15,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-21 19:13:15,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:13:15,563 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) [2024-06-21 19:13:15,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:13:15,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:13:15,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:13:15,858 INFO L124 PetriNetUnfolderBase]: 239/482 cut-off events. [2024-06-21 19:13:15,859 INFO L125 PetriNetUnfolderBase]: For 21066/21066 co-relation queries the response was YES. [2024-06-21 19:13:15,860 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. [2024-06-21 19:13:15,861 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 74 selfloop transitions, 24 changer transitions 15/115 dead transitions. [2024-06-21 19:13:15,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 115 transitions, 1129 flow [2024-06-21 19:13:15,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:13:15,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:13:15,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-21 19:13:15,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35777126099706746 [2024-06-21 19:13:15,862 INFO L175 Difference]: Start difference. First operand has 177 places, 102 transitions, 867 flow. Second operand 11 states and 122 transitions. [2024-06-21 19:13:15,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 115 transitions, 1129 flow [2024-06-21 19:13:15,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 115 transitions, 1053 flow, removed 11 selfloop flow, removed 12 redundant places. [2024-06-21 19:13:15,898 INFO L231 Difference]: Finished difference. Result has 166 places, 93 transitions, 775 flow [2024-06-21 19:13:15,898 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} [2024-06-21 19:13:15,899 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 136 predicate places. [2024-06-21 19:13:15,899 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 93 transitions, 775 flow [2024-06-21 19:13:15,899 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) [2024-06-21 19:13:15,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:13:15,899 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:13:15,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable248 [2024-06-21 19:13:15,899 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)] === [2024-06-21 19:13:15,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:13:15,899 INFO L85 PathProgramCache]: Analyzing trace with hash 556954726, now seen corresponding path program 21 times [2024-06-21 19:13:15,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:13:15,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968985339] [2024-06-21 19:13:15,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:13:15,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:13:15,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:13:17,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:13:17,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:13:17,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968985339] [2024-06-21 19:13:17,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968985339] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:13:17,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:13:17,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 19:13:17,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441534775] [2024-06-21 19:13:17,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:13:17,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 19:13:17,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:13:17,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 19:13:17,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-21 19:13:17,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:13:17,721 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) [2024-06-21 19:13:17,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:13:17,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:13:17,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:13:17,941 INFO L124 PetriNetUnfolderBase]: 216/437 cut-off events. [2024-06-21 19:13:17,941 INFO L125 PetriNetUnfolderBase]: For 17954/17954 co-relation queries the response was YES. [2024-06-21 19:13:17,943 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. [2024-06-21 19:13:17,944 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 72 selfloop transitions, 21 changer transitions 12/107 dead transitions. [2024-06-21 19:13:17,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 107 transitions, 1019 flow [2024-06-21 19:13:17,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:13:17,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:13:17,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-21 19:13:17,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-21 19:13:17,945 INFO L175 Difference]: Start difference. First operand has 166 places, 93 transitions, 775 flow. Second operand 11 states and 121 transitions. [2024-06-21 19:13:17,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 107 transitions, 1019 flow [2024-06-21 19:13:17,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 107 transitions, 944 flow, removed 7 selfloop flow, removed 18 redundant places. [2024-06-21 19:13:17,970 INFO L231 Difference]: Finished difference. Result has 150 places, 89 transitions, 717 flow [2024-06-21 19:13:17,970 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} [2024-06-21 19:13:17,970 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 120 predicate places. [2024-06-21 19:13:17,970 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 89 transitions, 717 flow [2024-06-21 19:13:17,971 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) [2024-06-21 19:13:17,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:13:17,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:13:17,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable249 [2024-06-21 19:13:17,971 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)] === [2024-06-21 19:13:17,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:13:17,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1667503234, now seen corresponding path program 22 times [2024-06-21 19:13:17,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:13:17,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364314745] [2024-06-21 19:13:17,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:13:17,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:13:17,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:13:19,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:13:19,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:13:19,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364314745] [2024-06-21 19:13:19,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364314745] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:13:19,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:13:19,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:13:19,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531298362] [2024-06-21 19:13:19,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:13:19,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:13:19,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:13:19,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:13:19,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:13:19,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:13:19,707 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) [2024-06-21 19:13:19,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:13:19,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:13:19,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:13:19,915 INFO L124 PetriNetUnfolderBase]: 202/411 cut-off events. [2024-06-21 19:13:19,915 INFO L125 PetriNetUnfolderBase]: For 13180/13180 co-relation queries the response was YES. [2024-06-21 19:13:19,917 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. [2024-06-21 19:13:19,917 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 62 selfloop transitions, 16 changer transitions 21/101 dead transitions. [2024-06-21 19:13:19,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 101 transitions, 945 flow [2024-06-21 19:13:19,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:13:19,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:13:19,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-21 19:13:19,918 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36129032258064514 [2024-06-21 19:13:19,918 INFO L175 Difference]: Start difference. First operand has 150 places, 89 transitions, 717 flow. Second operand 10 states and 112 transitions. [2024-06-21 19:13:19,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 101 transitions, 945 flow [2024-06-21 19:13:19,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 101 transitions, 897 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-21 19:13:19,937 INFO L231 Difference]: Finished difference. Result has 144 places, 77 transitions, 608 flow [2024-06-21 19:13:19,937 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} [2024-06-21 19:13:19,937 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 114 predicate places. [2024-06-21 19:13:19,937 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 77 transitions, 608 flow [2024-06-21 19:13:19,938 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) [2024-06-21 19:13:19,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:13:19,938 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:13:19,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable250 [2024-06-21 19:13:19,938 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)] === [2024-06-21 19:13:19,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:13:19,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1310721742, now seen corresponding path program 23 times [2024-06-21 19:13:19,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:13:19,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745273595] [2024-06-21 19:13:19,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:13:19,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:13:19,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:13:21,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:13:21,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:13:21,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745273595] [2024-06-21 19:13:21,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745273595] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:13:21,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:13:21,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 19:13:21,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292884305] [2024-06-21 19:13:21,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:13:21,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 19:13:21,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:13:21,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 19:13:21,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-21 19:13:21,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:13:21,708 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) [2024-06-21 19:13:21,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:13:21,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:13:21,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:13:21,884 INFO L124 PetriNetUnfolderBase]: 184/373 cut-off events. [2024-06-21 19:13:21,884 INFO L125 PetriNetUnfolderBase]: For 11740/11740 co-relation queries the response was YES. [2024-06-21 19:13:21,886 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. [2024-06-21 19:13:21,887 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 54 selfloop transitions, 21 changer transitions 15/92 dead transitions. [2024-06-21 19:13:21,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 92 transitions, 824 flow [2024-06-21 19:13:21,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:13:21,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:13:21,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 112 transitions. [2024-06-21 19:13:21,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3284457478005865 [2024-06-21 19:13:21,888 INFO L175 Difference]: Start difference. First operand has 144 places, 77 transitions, 608 flow. Second operand 11 states and 112 transitions. [2024-06-21 19:13:21,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 92 transitions, 824 flow [2024-06-21 19:13:21,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 92 transitions, 772 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-21 19:13:21,903 INFO L231 Difference]: Finished difference. Result has 130 places, 72 transitions, 572 flow [2024-06-21 19:13:21,903 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} [2024-06-21 19:13:21,904 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 100 predicate places. [2024-06-21 19:13:21,904 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 72 transitions, 572 flow [2024-06-21 19:13:21,904 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) [2024-06-21 19:13:21,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:13:21,904 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:13:21,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable251 [2024-06-21 19:13:21,904 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)] === [2024-06-21 19:13:21,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:13:21,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1760599072, now seen corresponding path program 5 times [2024-06-21 19:13:21,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:13:21,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653352810] [2024-06-21 19:13:21,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:13:21,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:13:21,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:13:23,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:13:23,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:13:23,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653352810] [2024-06-21 19:13:23,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653352810] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:13:23,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:13:23,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 19:13:23,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663133732] [2024-06-21 19:13:23,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:13:23,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 19:13:23,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:13:23,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 19:13:23,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-21 19:13:23,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:13:23,707 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) [2024-06-21 19:13:23,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:13:23,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:13:23,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:13:23,896 INFO L124 PetriNetUnfolderBase]: 170/347 cut-off events. [2024-06-21 19:13:23,896 INFO L125 PetriNetUnfolderBase]: For 10712/10712 co-relation queries the response was YES. [2024-06-21 19:13:23,897 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. [2024-06-21 19:13:23,898 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 43 selfloop transitions, 26 changer transitions 14/85 dead transitions. [2024-06-21 19:13:23,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 85 transitions, 780 flow [2024-06-21 19:13:23,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:13:23,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:13:23,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-21 19:13:23,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3460410557184751 [2024-06-21 19:13:23,899 INFO L175 Difference]: Start difference. First operand has 130 places, 72 transitions, 572 flow. Second operand 11 states and 118 transitions. [2024-06-21 19:13:23,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 85 transitions, 780 flow [2024-06-21 19:13:23,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 85 transitions, 708 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-21 19:13:23,911 INFO L231 Difference]: Finished difference. Result has 122 places, 64 transitions, 502 flow [2024-06-21 19:13:23,911 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} [2024-06-21 19:13:23,911 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 92 predicate places. [2024-06-21 19:13:23,911 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 64 transitions, 502 flow [2024-06-21 19:13:23,911 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) [2024-06-21 19:13:23,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:13:23,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:13:23,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable252 [2024-06-21 19:13:23,912 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)] === [2024-06-21 19:13:23,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:13:23,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1376495328, now seen corresponding path program 24 times [2024-06-21 19:13:23,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:13:23,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257608723] [2024-06-21 19:13:23,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:13:23,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:13:23,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:13:25,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:13:25,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:13:25,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257608723] [2024-06-21 19:13:25,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257608723] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:13:25,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:13:25,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:13:25,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347199842] [2024-06-21 19:13:25,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:13:25,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:13:25,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:13:25,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:13:25,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:13:25,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-21 19:13:25,354 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) [2024-06-21 19:13:25,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:13:25,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-21 19:13:25,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:13:25,486 INFO L124 PetriNetUnfolderBase]: 134/275 cut-off events. [2024-06-21 19:13:25,486 INFO L125 PetriNetUnfolderBase]: For 6028/6028 co-relation queries the response was YES. [2024-06-21 19:13:25,488 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. [2024-06-21 19:13:25,489 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 40 selfloop transitions, 22 changer transitions 10/75 dead transitions. [2024-06-21 19:13:25,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 75 transitions, 674 flow [2024-06-21 19:13:25,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:13:25,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:13:25,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-21 19:13:25,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36774193548387096 [2024-06-21 19:13:25,490 INFO L175 Difference]: Start difference. First operand has 122 places, 64 transitions, 502 flow. Second operand 10 states and 114 transitions. [2024-06-21 19:13:25,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 75 transitions, 674 flow [2024-06-21 19:13:25,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 75 transitions, 604 flow, removed 9 selfloop flow, removed 12 redundant places. [2024-06-21 19:13:25,495 INFO L231 Difference]: Finished difference. Result has 112 places, 59 transitions, 442 flow [2024-06-21 19:13:25,496 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} [2024-06-21 19:13:25,496 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 82 predicate places. [2024-06-21 19:13:25,496 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 59 transitions, 442 flow [2024-06-21 19:13:25,496 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) [2024-06-21 19:13:25,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:13:25,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:13:25,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable253 [2024-06-21 19:13:25,497 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)] === [2024-06-21 19:13:25,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:13:25,498 INFO L85 PathProgramCache]: Analyzing trace with hash -285412380, now seen corresponding path program 25 times [2024-06-21 19:13:25,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:13:25,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889766057] [2024-06-21 19:13:25,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:13:25,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:13:25,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:13:27,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:13:27,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:13:27,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889766057] [2024-06-21 19:13:27,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889766057] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:13:27,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:13:27,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 19:13:27,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824681492] [2024-06-21 19:13:27,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:13:27,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 19:13:27,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:13:27,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 19:13:27,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-21 19:13:27,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:13:27,335 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) [2024-06-21 19:13:27,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:13:27,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:13:27,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:13:27,511 INFO L124 PetriNetUnfolderBase]: 123/258 cut-off events. [2024-06-21 19:13:27,512 INFO L125 PetriNetUnfolderBase]: For 4260/4260 co-relation queries the response was YES. [2024-06-21 19:13:27,512 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. [2024-06-21 19:13:27,513 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 38 selfloop transitions, 17 changer transitions 16/73 dead transitions. [2024-06-21 19:13:27,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 73 transitions, 616 flow [2024-06-21 19:13:27,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:13:27,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:13:27,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 107 transitions. [2024-06-21 19:13:27,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31378299120234604 [2024-06-21 19:13:27,514 INFO L175 Difference]: Start difference. First operand has 112 places, 59 transitions, 442 flow. Second operand 11 states and 107 transitions. [2024-06-21 19:13:27,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 73 transitions, 616 flow [2024-06-21 19:13:27,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 73 transitions, 541 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-21 19:13:27,519 INFO L231 Difference]: Finished difference. Result has 107 places, 51 transitions, 362 flow [2024-06-21 19:13:27,519 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} [2024-06-21 19:13:27,519 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 77 predicate places. [2024-06-21 19:13:27,519 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 51 transitions, 362 flow [2024-06-21 19:13:27,519 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) [2024-06-21 19:13:27,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:13:27,520 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:13:27,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable254 [2024-06-21 19:13:27,520 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)] === [2024-06-21 19:13:27,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:13:27,520 INFO L85 PathProgramCache]: Analyzing trace with hash -280943730, now seen corresponding path program 26 times [2024-06-21 19:13:27,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:13:27,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421341713] [2024-06-21 19:13:27,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:13:27,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:13:27,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:13:29,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:13:29,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:13:29,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421341713] [2024-06-21 19:13:29,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421341713] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:13:29,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:13:29,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 19:13:29,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625351567] [2024-06-21 19:13:29,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:13:29,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 19:13:29,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:13:29,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 19:13:29,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-21 19:13:29,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:13:29,431 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) [2024-06-21 19:13:29,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:13:29,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:13:29,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:13:29,705 INFO L124 PetriNetUnfolderBase]: 95/206 cut-off events. [2024-06-21 19:13:29,707 INFO L125 PetriNetUnfolderBase]: For 3856/3856 co-relation queries the response was YES. [2024-06-21 19:13:29,707 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. [2024-06-21 19:13:29,708 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 28 selfloop transitions, 14 changer transitions 20/64 dead transitions. [2024-06-21 19:13:29,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 64 transitions, 514 flow [2024-06-21 19:13:29,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:13:29,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:13:29,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 106 transitions. [2024-06-21 19:13:29,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31085043988269795 [2024-06-21 19:13:29,709 INFO L175 Difference]: Start difference. First operand has 107 places, 51 transitions, 362 flow. Second operand 11 states and 106 transitions. [2024-06-21 19:13:29,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 64 transitions, 514 flow [2024-06-21 19:13:29,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 64 transitions, 462 flow, removed 6 selfloop flow, removed 15 redundant places. [2024-06-21 19:13:29,712 INFO L231 Difference]: Finished difference. Result has 95 places, 37 transitions, 255 flow [2024-06-21 19:13:29,713 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} [2024-06-21 19:13:29,713 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 65 predicate places. [2024-06-21 19:13:29,713 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 37 transitions, 255 flow [2024-06-21 19:13:29,713 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) [2024-06-21 19:13:29,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:13:29,713 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:13:29,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable255 [2024-06-21 19:13:29,714 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)] === [2024-06-21 19:13:29,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:13:29,715 INFO L85 PathProgramCache]: Analyzing trace with hash -108280860, now seen corresponding path program 27 times [2024-06-21 19:13:29,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:13:29,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097601660] [2024-06-21 19:13:29,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:13:29,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:13:29,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:13:31,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:13:31,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:13:31,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097601660] [2024-06-21 19:13:31,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097601660] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:13:31,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:13:31,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 19:13:31,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066318294] [2024-06-21 19:13:31,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:13:31,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 19:13:31,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:13:31,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 19:13:31,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-21 19:13:31,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:13:31,573 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) [2024-06-21 19:13:31,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:13:31,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:13:31,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:13:31,755 INFO L124 PetriNetUnfolderBase]: 44/105 cut-off events. [2024-06-21 19:13:31,755 INFO L125 PetriNetUnfolderBase]: For 1264/1264 co-relation queries the response was YES. [2024-06-21 19:13:31,755 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. [2024-06-21 19:13:31,756 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 0 selfloop transitions, 0 changer transitions 44/44 dead transitions. [2024-06-21 19:13:31,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 44 transitions, 313 flow [2024-06-21 19:13:31,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:13:31,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:13:31,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 98 transitions. [2024-06-21 19:13:31,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2873900293255132 [2024-06-21 19:13:31,757 INFO L175 Difference]: Start difference. First operand has 95 places, 37 transitions, 255 flow. Second operand 11 states and 98 transitions. [2024-06-21 19:13:31,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 44 transitions, 313 flow [2024-06-21 19:13:31,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 44 transitions, 234 flow, removed 1 selfloop flow, removed 25 redundant places. [2024-06-21 19:13:31,758 INFO L231 Difference]: Finished difference. Result has 69 places, 0 transitions, 0 flow [2024-06-21 19:13:31,758 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} [2024-06-21 19:13:31,758 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 39 predicate places. [2024-06-21 19:13:31,758 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 0 transitions, 0 flow [2024-06-21 19:13:31,758 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) [2024-06-21 19:13:31,760 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-21 19:13:31,761 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-21 19:13:31,761 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-21 19:13:31,761 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-21 19:13:31,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable256 [2024-06-21 19:13:31,762 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] [2024-06-21 19:13:31,764 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-21 19:13:31,764 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-21 19:13:31,767 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-21 19:13:31,768 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-21 19:13:31,768 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.06 07:13:31 BasicIcfg [2024-06-21 19:13:31,768 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-21 19:13:31,772 INFO L158 Benchmark]: Toolchain (without parser) took 669992.16ms. Allocated memory was 161.5MB in the beginning and 2.1GB in the end (delta: 1.9GB). Free memory was 133.5MB in the beginning and 921.5MB in the end (delta: -787.9MB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. [2024-06-21 19:13:31,772 INFO L158 Benchmark]: Witness Parser took 0.14ms. Allocated memory is still 96.5MB. Free memory is still 44.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-21 19:13:31,773 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 96.5MB. Free memory was 61.6MB in the beginning and 61.6MB in the end (delta: 24.7kB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-21 19:13:31,773 INFO L158 Benchmark]: CACSL2BoogieTranslator took 565.85ms. Allocated memory is still 161.5MB. Free memory was 132.8MB in the beginning and 109.7MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-06-21 19:13:31,773 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.90ms. Allocated memory is still 161.5MB. Free memory was 109.7MB in the beginning and 106.0MB in the end (delta: 3.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-21 19:13:31,773 INFO L158 Benchmark]: Boogie Preprocessor took 61.38ms. Allocated memory is still 161.5MB. Free memory was 106.0MB in the beginning and 102.2MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-21 19:13:31,773 INFO L158 Benchmark]: RCFGBuilder took 732.43ms. Allocated memory is still 161.5MB. Free memory was 102.2MB in the beginning and 91.1MB in the end (delta: 11.1MB). Peak memory consumption was 27.8MB. Max. memory is 16.1GB. [2024-06-21 19:13:31,773 INFO L158 Benchmark]: TraceAbstraction took 668570.23ms. Allocated memory was 161.5MB in the beginning and 2.1GB in the end (delta: 1.9GB). Free memory was 90.8MB in the beginning and 921.5MB in the end (delta: -830.7MB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2024-06-21 19:13:31,774 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 0.14ms. Allocated memory is still 96.5MB. Free memory is still 44.4MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.14ms. Allocated memory is still 96.5MB. Free memory was 61.6MB in the beginning and 61.6MB in the end (delta: 24.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 565.85ms. Allocated memory is still 161.5MB. Free memory was 132.8MB in the beginning and 109.7MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.90ms. Allocated memory is still 161.5MB. Free memory was 109.7MB in the beginning and 106.0MB in the end (delta: 3.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 61.38ms. Allocated memory is still 161.5MB. Free memory was 106.0MB in the beginning and 102.2MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 732.43ms. Allocated memory is still 161.5MB. Free memory was 102.2MB in the beginning and 91.1MB in the end (delta: 11.1MB). Peak memory consumption was 27.8MB. Max. memory is 16.1GB. * TraceAbstraction took 668570.23ms. Allocated memory was 161.5MB in the beginning and 2.1GB in the end (delta: 1.9GB). Free memory was 90.8MB in the beginning and 921.5MB in the end (delta: -830.7MB). Peak memory consumption was 1.1GB. 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: 668.5s, OverallIterations: 257, TraceHistogramMax: 1, PathProgramHistogramMax: 41, EmptinessCheckTime: 0.0s, AutomataDifference: 341.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 13968 SdHoareTripleChecker+Valid, 62.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11579 mSDsluCounter, 10611 SdHoareTripleChecker+Invalid, 53.9s 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, 82.5s 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, 2.5s SatisfiabilityAnalysisTime, 322.7s 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! [2024-06-21 19:13:31,916 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE